Source code for pyo.lib.effects

"""
Objects to perform specific audio signal processing effects such
as distortions, delays, chorus and reverbs.

"""

"""
Copyright 2009-2015 Olivier Belanger

This file is part of pyo, a python module to help digital signal
processing script creation.

pyo is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

pyo is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with pyo.  If not, see <http://www.gnu.org/licenses/>.
"""

from ._core import *
from ._maps import *
from .generators import Sine
from .filters import Hilbert


[docs]class Disto(PyoObject): """ Kind of Arc tangent distortion. Apply a kind of arc tangent distortion with controllable drive, followed by a one pole lowpass filter, to the input signal. As of version 0.8.0, this object use a simple but very efficient (4x faster than tanh or atan2 functions) waveshaper formula. The waveshaper algorithm is: y[n] = (1 + k) * x[n] / (1 + k * abs(x[n])) where: k = (2 * drive) / (1 - drive) :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to process. drive: float or PyoObject, optional Amount of distortion applied to the signal, between 0 and 1. Defaults to 0.75. slope: float or PyoObject, optional Slope of the lowpass filter applied after distortion, between 0 and 1. Defaults to 0.5. .. seealso:: :py:class:`Degrade`, :py:class:`Clip` >>> s = Server().boot() >>> s.start() >>> a = SfPlayer(SNDS_PATH + "/transparent.aif", loop=True) >>> lfo = Sine(freq=[.2,.25], mul=.5, add=.5) >>> d = Disto(a, drive=lfo, slope=.8, mul=.15).out() """ def __init__(self, input, drive=0.75, slope=0.5, mul=1, add=0): pyoArgsAssert(self, "oOOOO", input, drive, slope, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._drive = drive self._slope = slope self._in_fader = InputFader(input) in_fader, drive, slope, mul, add, lmax = convertArgsToLists(self._in_fader, drive, slope, mul, add) self._base_objs = [ Disto_base(wrap(in_fader, i), wrap(drive, i), wrap(slope, i), wrap(mul, i), wrap(add, i)) for i in range(lmax) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setDrive(self, x): """ Replace the `drive` attribute. :Args: x: float or PyoObject New `drive` attribute. """ pyoArgsAssert(self, "O", x) self._drive = x x, lmax = convertArgsToLists(x) [obj.setDrive(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setSlope(self, x): """ Replace the `slope` attribute. :Args: x: float or PyoObject New `slope` attribute. """ pyoArgsAssert(self, "O", x) self._slope = x x, lmax = convertArgsToLists(x) [obj.setSlope(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [ SLMap(0.0, 1.0, "lin", "drive", self._drive), SLMap(0.0, 0.999, "lin", "slope", self._slope), SLMapMul(self._mul), ] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to process.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def drive(self): """float or PyoObject. Amount of distortion.""" return self._drive @drive.setter def drive(self, x): self.setDrive(x) @property def slope(self): """float or PyoObject. Slope of the lowpass filter.""" return self._slope @slope.setter def slope(self, x): self.setSlope(x)
[docs]class Delay(PyoObject): """ Sweepable recursive delay. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to delayed. delay: float or PyoObject, optional Delay time in seconds. Defaults to 0.25. feedback: float or PyoObject, optional Amount of output signal sent back into the delay line. Defaults to 0. maxdelay: float, optional Maximum delay length in seconds. Available only at initialization. Defaults to 1. .. note:: The minimum delay time allowed with Delay is one sample. It can be computed with : onesamp = 1.0 / s.getSamplingRate() .. seealso:: :py:class:`SDelay`, :py:class:`SmoothDelay`, :py:class:`Waveguide` >>> s = Server().boot() >>> s.start() >>> a = SfPlayer(SNDS_PATH + "/transparent.aif", loop=True, mul=.3).mix(2).out() >>> d = Delay(a, delay=[.15,.2], feedback=.5, mul=.4).out() """ def __init__(self, input, delay=0.25, feedback=0, maxdelay=1, mul=1, add=0): pyoArgsAssert(self, "oOOnOO", input, delay, feedback, maxdelay, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._delay = delay self._feedback = feedback self._maxdelay = maxdelay self._in_fader = InputFader(input) in_fader, delay, feedback, maxdelay, mul, add, lmax = convertArgsToLists( self._in_fader, delay, feedback, maxdelay, mul, add ) self._base_objs = [ Delay_base( wrap(in_fader, i), wrap(delay, i), wrap(feedback, i), wrap(maxdelay, i), wrap(mul, i), wrap(add, i) ) for i in range(lmax) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to delayed. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setDelay(self, x): """ Replace the `delay` attribute. :Args: x: float or PyoObject New `delay` attribute. """ pyoArgsAssert(self, "O", x) self._delay = x x, lmax = convertArgsToLists(x) [obj.setDelay(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setFeedback(self, x): """ Replace the `feedback` attribute. :Args: x: float or PyoObject New `feedback` attribute. """ pyoArgsAssert(self, "O", x) self._feedback = x x, lmax = convertArgsToLists(x) [obj.setFeedback(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def reset(self): """ Reset the memory buffer to zeros. """ [obj.reset() for obj in self._base_objs]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [ SLMap(0.001, self._maxdelay, "log", "delay", self._delay), SLMap(0.0, 1.0, "lin", "feedback", self._feedback), SLMapMul(self._mul), ] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to delayed.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def delay(self): """float or PyoObject. Delay time in seconds.""" return self._delay @delay.setter def delay(self, x): self.setDelay(x) @property def feedback(self): """float or PyoObject. Amount of output signal sent back into the delay line.""" return self._feedback @feedback.setter def feedback(self, x): self.setFeedback(x)
[docs]class SDelay(PyoObject): """ Simple delay without interpolation. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to delayed. delay: float or PyoObject, optional Delay time in seconds. Defaults to 0.25. maxdelay: float, optional Maximum delay length in seconds. Available only at initialization. Defaults to 1. .. seealso:: :py:class:`Delay`, :py:class:`Delay1` >>> s = Server().boot() >>> s.start() >>> srPeriod = 1. / s.getSamplingRate() >>> dlys = [srPeriod * i * 5 for i in range(1, 7)] >>> a = SfPlayer(SNDS_PATH + "/transparent.aif", loop=True) >>> d = SDelay(a, delay=dlys, mul=.1).out(1) """ def __init__(self, input, delay=0.25, maxdelay=1, mul=1, add=0): pyoArgsAssert(self, "oOnOO", input, delay, maxdelay, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._delay = delay self._maxdelay = maxdelay self._in_fader = InputFader(input) in_fader, delay, maxdelay, mul, add, lmax = convertArgsToLists(self._in_fader, delay, maxdelay, mul, add) self._base_objs = [ SDelay_base(wrap(in_fader, i), wrap(delay, i), wrap(maxdelay, i), wrap(mul, i), wrap(add, i)) for i in range(lmax) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setDelay(self, x): """ Replace the `delay` attribute. :Args: x: float or PyoObject New `delay` attribute. """ pyoArgsAssert(self, "O", x) self._delay = x x, lmax = convertArgsToLists(x) [obj.setDelay(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def reset(self): """ Reset the memory buffer to zeros. """ [obj.reset() for obj in self._base_objs]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [SLMap(0.0001, self._maxdelay, "log", "delay", self._delay), SLMapMul(self._mul)] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to delayed.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def delay(self): """float or PyoObject. Delay time in seconds.""" return self._delay @delay.setter def delay(self, x): self.setDelay(x)
[docs]class Waveguide(PyoObject): """ Basic waveguide model. This waveguide model consisting of one delay-line with a simple lowpass filtering and lagrange interpolation. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to process. freq: float or PyoObject, optional Frequency, in cycle per second, of the waveguide (i.e. the inverse of delay time). Defaults to 100. dur: float or PyoObject, optional Duration, in seconds, for the waveguide to drop 40 dB below it's maxima. Defaults to 10. minfreq: float, optional Minimum possible frequency, used to initialized delay length. Available only at initialization. Defaults to 20. .. seealso:: :py:class:`Delay`, :py:class:`AllpassWG`, :py:class:`WGVerb` >>> s = Server().boot() >>> s.start() >>> sf = SfPlayer(SNDS_PATH + '/transparent.aif', speed=[.98,1.02], loop=True) >>> gt = Gate(sf, thresh=-24, risetime=0.005, falltime=0.01, lookahead=5, mul=.2) >>> w = Waveguide(gt, freq=[60,120.17,180.31,240.53], dur=20, minfreq=20, mul=.4).out() """ def __init__(self, input, freq=100, dur=10, minfreq=20, mul=1, add=0): pyoArgsAssert(self, "oOOnOO", input, freq, dur, minfreq, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._freq = freq self._dur = dur self._in_fader = InputFader(input) in_fader, freq, dur, minfreq, mul, add, lmax = convertArgsToLists(self._in_fader, freq, dur, minfreq, mul, add) self._base_objs = [ Waveguide_base(wrap(in_fader, i), wrap(freq, i), wrap(dur, i), wrap(minfreq, i), wrap(mul, i), wrap(add, i)) for i in range(lmax) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setFreq(self, x): """ Replace the `freq` attribute. :Args: x: float or PyoObject New `freq` attribute. """ pyoArgsAssert(self, "O", x) self._freq = x x, lmax = convertArgsToLists(x) [obj.setFreq(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setDur(self, x): """ Replace the `dur` attribute. :Args: x: float or PyoObject New `dur` attribute. """ pyoArgsAssert(self, "O", x) self._dur = x x, lmax = convertArgsToLists(x) [obj.setDur(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def reset(self): """ Reset the memory buffer to zeros. """ [obj.reset() for obj in self._base_objs]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [SLMap(10, 500.0, "log", "freq", self._freq), SLMapDur(self._dur), SLMapMul(self._mul)] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to process.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def freq(self): """float or PyoObject. Frequency in cycle per second.""" return self._freq @freq.setter def freq(self, x): self.setFreq(x) @property def dur(self): """float or PyoObject. Resonance duration in seconds.""" return self._dur @dur.setter def dur(self, x): self.setDur(x)
[docs]class AllpassWG(PyoObject): """ Out of tune waveguide model with a recursive allpass network. This waveguide model consisting of one delay-line with a 3-stages recursive allpass filter which made the resonances of the waveguide out of tune. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to process. freq: float or PyoObject, optional Frequency, in cycle per second, of the waveguide (i.e. the inverse of delay time). Defaults to 100. feed: float or PyoObject, optional Amount of output signal (between 0 and 1) sent back into the delay line. Defaults to 0.95. detune: float or PyoObject, optional Control the depth of the allpass delay-line filter, i.e. the depth of the detuning. Should be in the range 0 to 1. Defaults to 0.5. minfreq: float, optional Minimum possible frequency, used to initialized delay length. Available only at initialization. Defaults to 20. .. seealso:: :py:class:`Delay`, :py:class:`Waveguide` >>> s = Server().boot() >>> s.start() >>> sf = SfPlayer(SNDS_PATH + '/transparent.aif', speed=[.98,1.02], loop=True) >>> gt = Gate(sf, thresh=-24, risetime=0.005, falltime=0.01, lookahead=5, mul=.2) >>> rnd = Randi(min=.5, max=1.0, freq=[.13,.22,.155,.171]) >>> rnd2 = Randi(min=.95, max=1.05, freq=[.145,.2002,.1055,.071]) >>> fx = AllpassWG(gt, freq=rnd2*[74.87,75,75.07,75.21], feed=1, detune=rnd, mul=.15).out() """ def __init__(self, input, freq=100, feed=0.95, detune=0.5, minfreq=20, mul=1, add=0): pyoArgsAssert(self, "oOOOnOO", input, freq, feed, detune, minfreq, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._freq = freq self._feed = feed self._detune = detune self._in_fader = InputFader(input) in_fader, freq, feed, detune, minfreq, mul, add, lmax = convertArgsToLists( self._in_fader, freq, feed, detune, minfreq, mul, add ) self._base_objs = [ AllpassWG_base( wrap(in_fader, i), wrap(freq, i), wrap(feed, i), wrap(detune, i), wrap(minfreq, i), wrap(mul, i), wrap(add, i), ) for i in range(lmax) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setFreq(self, x): """ Replace the `freq` attribute. :Args: x: float or PyoObject New `freq` attribute. """ pyoArgsAssert(self, "O", x) self._freq = x x, lmax = convertArgsToLists(x) [obj.setFreq(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setFeed(self, x): """ Replace the `feed` attribute. :Args: x: float or PyoObject New `feed` attribute. """ pyoArgsAssert(self, "O", x) self._feed = x x, lmax = convertArgsToLists(x) [obj.setFeed(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setDetune(self, x): """ Replace the `detune` attribute. :Args: x: float or PyoObject New `detune` attribute. """ pyoArgsAssert(self, "O", x) self._detune = x x, lmax = convertArgsToLists(x) [obj.setDetune(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def reset(self): """ Reset the memory buffer to zeros. """ [obj.reset() for obj in self._base_objs]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [ SLMap(20.0, 500.0, "log", "freq", self._freq), SLMap(0.0, 1.0, "lin", "feed", self._feed), SLMap(0.0, 1.0, "lin", "detune", self._detune), SLMapMul(self._mul), ] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to process.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def freq(self): """float or PyoObject. Frequency in cycle per second.""" return self._freq @freq.setter def freq(self, x): self.setFreq(x) @property def feed(self): """float or PyoObject. Amount of output signal sent back into the delay line.""" return self._feed @feed.setter def feed(self, x): self.setFeed(x) @property def detune(self): """float or PyoObject. Depth of the detuning.""" return self._detune @detune.setter def detune(self, x): self.setDetune(x)
[docs]class Freeverb(PyoObject): """ Implementation of Jezar's Freeverb. Freeverb is a reverb unit generator based on Jezar's public domain C++ sources, composed of eight parallel comb filters, followed by four allpass units in series. Filters on each stream are slightly detuned in order to create multi-channel effects. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to process. size: float or PyoObject, optional Controls the length of the reverb, between 0 and 1. A higher value means longer reverb. Defaults to 0.5. damp: float or PyoObject, optional High frequency attenuation, between 0 and 1. A higher value will result in a faster decay of the high frequency range. Defaults to 0.5. bal: float or PyoObject, optional Balance between wet and dry signal, between 0 and 1. 0 means no reverb. Defaults to 0.5. .. seealso:: :py:class:`WGVerb`, :py:class:`STRev`, :py:class:`CvlVerb` >>> s = Server().boot() >>> s.start() >>> a = SfPlayer(SNDS_PATH + "/transparent.aif", loop=True, mul=.4) >>> b = Freeverb(a, size=[.79,.8], damp=.9, bal=.3).out() """ def __init__(self, input, size=0.5, damp=0.5, bal=0.5, mul=1, add=0): pyoArgsAssert(self, "oOOOOO", input, size, damp, bal, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._size = size self._damp = damp self._bal = bal self._in_fader = InputFader(input) in_fader, size, damp, bal, mul, add, lmax = convertArgsToLists(self._in_fader, size, damp, bal, mul, add) self._base_objs = [ Freeverb_base(wrap(in_fader, i), wrap(size, i), wrap(damp, i), wrap(bal, i), wrap(mul, i), wrap(add, i)) for i in range(lmax) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setSize(self, x): """ Replace the `size` attribute. :Args: x: float or PyoObject New `size` attribute. """ pyoArgsAssert(self, "O", x) self._size = x x, lmax = convertArgsToLists(x) [obj.setSize(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setDamp(self, x): """ Replace the `damp` attribute. :Args: x: float or PyoObject New `damp` attribute. """ pyoArgsAssert(self, "O", x) self._damp = x x, lmax = convertArgsToLists(x) [obj.setDamp(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setBal(self, x): """ Replace the `bal` attribute. :Args: x: float or PyoObject New `bal` attribute. """ pyoArgsAssert(self, "O", x) self._bal = x x, lmax = convertArgsToLists(x) [obj.setMix(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def reset(self): """ Reset the memory buffer to zeros. """ [obj.reset() for obj in self._base_objs]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [ SLMap(0.0, 1.0, "lin", "size", self._size), SLMap(0.0, 1.0, "lin", "damp", self._damp), SLMap(0.0, 1.0, "lin", "bal", self._bal), SLMapMul(self._mul), ] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to process.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def size(self): """float or PyoObject. Room size.""" return self._size @size.setter def size(self, x): self.setSize(x) @property def damp(self): """float or PyoObject. High frequency damping.""" return self._damp @damp.setter def damp(self, x): self.setDamp(x) @property def bal(self): """float or PyoObject. Balance between wet and dry signal.""" return self._bal @bal.setter def bal(self, x): self.setBal(x)
[docs]class Convolve(PyoObject): """ Implements filtering using circular convolution. A circular convolution is defined as the integral of the product of two functions after one is reversed and shifted. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to process. table: PyoTableObject Table containning the impulse response. size: int Length, in samples, of the convolution. Available at initialization time only. If the table changes during the performance, its size must egal or greater than this value. If greater only the first `size` samples will be used. .. note:: Convolution is very expensive to compute, so the impulse response must be kept very short to run in real time. Usually convolution generates a high amplitude level, take care of the `mul` parameter! .. seealso:: :py:class:`Follower` >>> s = Server().boot() >>> s.start() >>> snd = SNDS_PATH + '/transparent.aif' >>> sf = SfPlayer(snd, speed=[.999,1], loop=True, mul=.25).out() >>> a = Convolve(sf, SndTable(SNDS_PATH+'/accord.aif'), size=512, mul=.2).out() """ def __init__(self, input, table, size, mul=1, add=0): pyoArgsAssert(self, "otiOO", input, table, size, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._table = table self._size = size self._in_fader = InputFader(input) in_fader, table, size, mul, add, lmax = convertArgsToLists(self._in_fader, table, size, mul, add) self._base_objs = [ Convolve_base(wrap(in_fader, i), wrap(table, i), wrap(size, i), wrap(mul, i), wrap(add, i)) for i in range(lmax) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Default to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setTable(self, x): """ Replace the `table` attribute. :Args: x: PyoTableObject new `table` attribute. """ pyoArgsAssert(self, "t", x) self._table = x x, lmax = convertArgsToLists(x) [obj.setTable(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
@property def input(self): """PyoObject. Input signal to filter.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def table(self): """PyoTableObject. Table containing the impulse response.""" return self._table @table.setter def table(self, x): self.setTable(x)
[docs]class WGVerb(PyoObject): """ 8 delay lines mono FDN reverb. 8 delay lines FDN reverb, with feedback matrix based upon physical modeling scattering junction of 8 lossless waveguides of equal characteristic impedance. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to process. feedback: float or PyoObject, optional Amount of output signal sent back into the delay lines. Defaults to 0.5. 0.6 gives a good small "live" room sound, 0.8 a small hall, and 0.9 a large hall. cutoff: float or PyoObject, optional cutoff frequency of simple first order lowpass filters in the feedback loop of delay lines, in Hz. Defaults to 5000. bal: float or PyoObject, optional Balance between wet and dry signal, between 0 and 1. 0 means no reverb. Defaults to 0.5. .. seealso:: :py:class:`Freeverb`, :py:class:`STRev`, :py:class:`CvlVerb` >>> s = Server().boot() >>> s.start() >>> a = SfPlayer(SNDS_PATH + "/transparent.aif", loop=True) >>> d = WGVerb(a, feedback=[.74,.75], cutoff=5000, bal=.25, mul=.3).out() """ def __init__(self, input, feedback=0.5, cutoff=5000, bal=0.5, mul=1, add=0): pyoArgsAssert(self, "oOOOOO", input, feedback, cutoff, bal, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._feedback = feedback self._cutoff = cutoff self._bal = bal self._in_fader = InputFader(input) in_fader, feedback, cutoff, bal, mul, add, lmax = convertArgsToLists( self._in_fader, feedback, cutoff, bal, mul, add ) self._base_objs = [ WGVerb_base(wrap(in_fader, i), wrap(feedback, i), wrap(cutoff, i), wrap(bal, i), wrap(mul, i), wrap(add, i)) for i in range(lmax) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setFeedback(self, x): """ Replace the `feedback` attribute. :Args: x: float or PyoObject New `feedback` attribute. """ pyoArgsAssert(self, "O", x) self._feedback = x x, lmax = convertArgsToLists(x) [obj.setFeedback(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setCutoff(self, x): """ Replace the `cutoff` attribute. :Args: x: float or PyoObject New `cutoff` attribute. """ pyoArgsAssert(self, "O", x) self._cutoff = x x, lmax = convertArgsToLists(x) [obj.setCutoff(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setBal(self, x): """ Replace the `bal` attribute. :Args: x: float or PyoObject New `bal` attribute. """ pyoArgsAssert(self, "O", x) self._bal = x x, lmax = convertArgsToLists(x) [obj.setMix(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def reset(self): """ Reset the memory buffer to zeros. """ [obj.reset() for obj in self._base_objs]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [ SLMap(0.0, 1.0, "lin", "feedback", self._feedback), SLMap(500.0, 15000.0, "log", "cutoff", self._cutoff), SLMap(0.0, 1.0, "lin", "bal", self._bal), SLMapMul(self._mul), ] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to process.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def feedback(self): """float or PyoObject. Amount of output signal sent back into the delay lines.""" return self._feedback @feedback.setter def feedback(self, x): self.setFeedback(x) @property def cutoff(self): """float or PyoObject. Lowpass filter cutoff in Hz.""" return self._cutoff @cutoff.setter def cutoff(self, x): self.setCutoff(x) @property def bal(self): """float or PyoObject. wet - dry balance.""" return self._bal @bal.setter def bal(self, x): self.setBal(x)
[docs]class Chorus(PyoObject): """ 8 modulated delay lines chorus processor. A chorus effect occurs when individual sounds with roughly the same timbre and nearly (but never exactly) the same pitch converge and are perceived as one. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to process. depth: float or PyoObject, optional Chorus depth, between 0 and 5. Defaults to 1. feedback: float or PyoObject, optional Amount of output signal sent back into the delay lines. Defaults to 0.25. bal: float or PyoObject, optional Balance between wet and dry signals, between 0 and 1. 0 means no chorus. Defaults to 0.5. >>> s = Server().boot() >>> s.start() >>> sf = SfPlayer(SNDS_PATH + '/transparent.aif', loop=True, mul=.5) >>> chor = Chorus(sf, depth=[1.5,1.6], feedback=0.5, bal=0.5).out() """ def __init__(self, input, depth=1, feedback=0.25, bal=0.5, mul=1, add=0): pyoArgsAssert(self, "oOOOOO", input, depth, feedback, bal, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._depth = depth self._feedback = feedback self._bal = bal self._in_fader = InputFader(input) in_fader, depth, feedback, bal, mul, add, lmax = convertArgsToLists( self._in_fader, depth, feedback, bal, mul, add ) self._base_objs = [ Chorus_base(wrap(in_fader, i), wrap(depth, i), wrap(feedback, i), wrap(bal, i), wrap(mul, i), wrap(add, i)) for i in range(lmax) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setDepth(self, x): """ Replace the `depth` attribute. :Args: x: float or PyoObject New `depth` attribute. """ pyoArgsAssert(self, "O", x) self._depth = x x, lmax = convertArgsToLists(x) [obj.setDepth(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setFeedback(self, x): """ Replace the `feedback` attribute. :Args: x: float or PyoObject New `feedback` attribute. """ pyoArgsAssert(self, "O", x) self._feedback = x x, lmax = convertArgsToLists(x) [obj.setFeedback(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setBal(self, x): """ Replace the `bal` attribute. :Args: x: float or PyoObject New `bal` attribute. """ pyoArgsAssert(self, "O", x) self._bal = x x, lmax = convertArgsToLists(x) [obj.setMix(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def reset(self): """ Reset the memory buffer to zeros. """ [obj.reset() for obj in self._base_objs]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [ SLMap(0.0, 5.0, "lin", "depth", self._depth), SLMap(0.0, 1.0, "lin", "feedback", self._feedback), SLMap(0.0, 1.0, "lin", "bal", self._bal), SLMapMul(self._mul), ] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to process.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def depth(self): """float or PyoObject. Chorus depth, between 0 and 5.""" return self._depth @depth.setter def depth(self, x): self.setDepth(x) @property def feedback(self): """float or PyoObject. Amount of output signal sent back into the delay lines.""" return self._feedback @feedback.setter def feedback(self, x): self.setFeedback(x) @property def bal(self): """float or PyoObject. wet - dry balance.""" return self._bal @bal.setter def bal(self, x): self.setBal(x)
[docs]class Harmonizer(PyoObject): """ Generates harmonizing voices in synchrony with its audio input. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to process. transpo: float or PyoObject, optional Transposition factor in semitone. Defaults to -7.0. feedback: float or PyoObject, optional Amount of output signal sent back into the delay line. Defaults to 0. winsize: float, optional Window size in seconds (max = 1.0). Defaults to 0.1. >>> s = Server().boot() >>> s.start() >>> sf = SfPlayer(SNDS_PATH + '/transparent.aif', loop=True, mul=.3).out() >>> harm = Harmonizer(sf, transpo=-5, winsize=0.05).out(1) """ def __init__(self, input, transpo=-7.0, feedback=0, winsize=0.1, mul=1, add=0): pyoArgsAssert(self, "oOOnOO", input, transpo, feedback, winsize, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._transpo = transpo self._feedback = feedback self._winsize = winsize self._in_fader = InputFader(input) in_fader, transpo, feedback, winsize, mul, add, lmax = convertArgsToLists( self._in_fader, transpo, feedback, winsize, mul, add ) self._base_objs = [ Harmonizer_base( wrap(in_fader, i), wrap(transpo, i), wrap(feedback, i), wrap(winsize, i), wrap(mul, i), wrap(add, i) ) for i in range(lmax) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setTranspo(self, x): """ Replace the `transpo` attribute. :Args: x: float or PyoObject New `transpo` attribute. """ pyoArgsAssert(self, "O", x) self._transpo = x x, lmax = convertArgsToLists(x) [obj.setTranspo(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setFeedback(self, x): """ Replace the `feedback` attribute. :Args: x: float or PyoObject New `feedback` attribute. """ pyoArgsAssert(self, "O", x) self._feedback = x x, lmax = convertArgsToLists(x) [obj.setFeedback(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setWinsize(self, x): """ Replace the `winsize` attribute. :Args: x: float New `winsize` attribute. """ pyoArgsAssert(self, "n", x) self._winsize = x x, lmax = convertArgsToLists(x) [obj.setWinsize(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def reset(self): """ Reset the memory buffer to zeros. """ [obj.reset() for obj in self._base_objs]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [ SLMap(-24.0, 24.0, "lin", "transpo", self._transpo), SLMap(0.0, 1.0, "lin", "feedback", self._feedback), SLMap(0.001, 1, "log", "winsize", self._winsize, dataOnly=True), SLMapMul(self._mul), ] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to delayed.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def transpo(self): """float or PyoObject. Transposition factor in semitone.""" return self._transpo @transpo.setter def transpo(self, x): self.setTranspo(x) @property def feedback(self): """float or PyoObject. Amount of output signal sent back into the delay line.""" return self._feedback @feedback.setter def feedback(self, x): self.setFeedback(x) @property def winsize(self): """float. Window size in seconds (max = 1.0).""" return self._winsize @winsize.setter def winsize(self, x): self.setWinsize(x)
[docs]class Delay1(PyoObject): """ Delays a signal by one sample. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to process. >>> s = Server().boot() >>> s.start() >>> # 50th order FIR lowpass filter >>> order = 50 >>> objs = [Noise(.3)] >>> for i in range(order): ... objs.append(Delay1(objs[-1], add=objs[-1])) ... objs.append(objs[-1] * 0.5) >>> out = Sig(objs[-1]).out() """ def __init__(self, input, mul=1, add=0): pyoArgsAssert(self, "oOO", input, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._in_fader = InputFader(input) in_fader, mul, add, lmax = convertArgsToLists(self._in_fader, mul, add) self._base_objs = [Delay1_base(wrap(in_fader, i), wrap(mul, i), wrap(add, i)) for i in range(lmax)] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Default to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
@property def input(self): """PyoObject. Input signal to delayed.""" return self._input @input.setter def input(self, x): self.setInput(x)
[docs]class STRev(PyoObject): """ Stereo reverb. Stereo reverb based on WGVerb (8 delay line FDN reverb). A mono input will produce two audio streams, left and right channels. Therefore, a stereo input will produce four audio streams, left and right channels for each input channel. Position of input streams can be set with the `inpos` argument. To achieve a stereo reverb, delay line lengths are slightly differents on both channels, but also, pre-delays length and filter cutoff of both channels will be affected to reflect the input position. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to process. inpos: float or PyoObject, optional Position of the source, between 0 and 1. 0 means fully left and 1 means fully right. Defaults to 0.5. revtime: float or PyoObject, optional Duration, in seconds, of the reverberated sound, defined as the time needed to the sound to drop 40 dB below its peak. Defaults to 1. cutoff: float or PyoObject, optional cutoff frequency, in Hz, of a first order lowpass filters in the feedback loop of delay lines. Defaults to 5000. bal: float or PyoObject, optional Balance between wet and dry signal, between 0 and 1. 0 means no reverb. Defaults to 0.5. roomSize: float, optional Delay line length scaler, between 0.25 and 4. Values higher than 1 make the delay lines longer and simulate larger rooms. Defaults to 1. firstRefGain: float, optional Gain, in dB, of the first reflexions of the room. Defaults to -3. >>> s = Server().boot() >>> s.start() >>> t = SndTable(SNDS_PATH + "/transparent.aif") >>> sf = Looper(t, dur=t.getDur()*2, xfade=0, mul=0.5) >>> rev = STRev(sf, inpos=0.25, revtime=2, cutoff=5000, bal=0.25, roomSize=1).out() """ def __init__(self, input, inpos=0.5, revtime=1, cutoff=5000, bal=0.5, roomSize=1, firstRefGain=-3, mul=1, add=0): pyoArgsAssert(self, "oOOOOnnOO", input, inpos, revtime, cutoff, bal, roomSize, firstRefGain, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._inpos = inpos self._revtime = revtime self._cutoff = cutoff self._bal = bal self._roomSize = roomSize self._firstRefGain = firstRefGain self._in_fader = InputFader(input) in_fader, inpos, revtime, cutoff, bal, roomSize, firstRefGain, mul, add, lmax = convertArgsToLists( self._in_fader, inpos, revtime, cutoff, bal, roomSize, firstRefGain, mul, add ) self._base_players = [ STReverb_base( wrap(in_fader, i), wrap(inpos, i), wrap(revtime, i), wrap(cutoff, i), wrap(bal, i), wrap(roomSize, i), wrap(firstRefGain, i), ) for i in range(lmax) ] self._base_objs = [ STRev_base(wrap(self._base_players, i), j, wrap(mul, i), wrap(add, i)) for i in range(lmax) for j in range(2) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setInpos(self, x): """ Replace the `inpos` attribute. :Args: x: float or PyoObject New `inpos` attribute. """ pyoArgsAssert(self, "O", x) self._inpos = x x, lmax = convertArgsToLists(x) [obj.setInpos(wrap(x, i)) for i, obj in enumerate(self._base_players)]
[docs] def setRevtime(self, x): """ Replace the `revtime` attribute. :Args: x: float or PyoObject New `revtime` attribute. """ pyoArgsAssert(self, "O", x) self._revtime = x x, lmax = convertArgsToLists(x) [obj.setRevtime(wrap(x, i)) for i, obj in enumerate(self._base_players)]
[docs] def setCutoff(self, x): """ Replace the `cutoff` attribute. :Args: x: float or PyoObject New `cutoff` attribute. """ pyoArgsAssert(self, "O", x) self._cutoff = x x, lmax = convertArgsToLists(x) [obj.setCutoff(wrap(x, i)) for i, obj in enumerate(self._base_players)]
[docs] def setBal(self, x): """ Replace the `bal` attribute. :Args: x: float or PyoObject New `bal` attribute. """ pyoArgsAssert(self, "O", x) self._bal = x x, lmax = convertArgsToLists(x) [obj.setMix(wrap(x, i)) for i, obj in enumerate(self._base_players)]
[docs] def setRoomSize(self, x): """ Set the room size scaler, between 0.25 and 4. :Args: x: float Room size scaler, between 0.25 and 4.0. """ pyoArgsAssert(self, "n", x) self._roomSize = x x, lmax = convertArgsToLists(x) [obj.setRoomSize(wrap(x, i)) for i, obj in enumerate(self._base_players)]
[docs] def setFirstRefGain(self, x): """ Set the gain of the first reflexions. :Args: x: float Gain, in dB, of the first reflexions. """ pyoArgsAssert(self, "n", x) self._firstRefGain = x x, lmax = convertArgsToLists(x) [obj.setFirstRefGain(wrap(x, i)) for i, obj in enumerate(self._base_players)]
[docs] def reset(self): """ Reset the memory buffer to zeros. """ [obj.reset() for obj in self._base_players]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [ SLMap(0.0, 1.0, "lin", "inpos", self._inpos), SLMap(0.01, 120.0, "log", "revtime", self._revtime), SLMap(500.0, 15000.0, "log", "cutoff", self._cutoff), SLMap(0.0, 1.0, "lin", "bal", self._bal), SLMap(0.25, 4.0, "lin", "roomSize", self._roomSize, dataOnly=True), SLMap(-48, 12, "lin", "firstRefGain", self._firstRefGain, dataOnly=True), SLMapMul(self._mul), ] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to process.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def inpos(self): """float or PyoObject. Position of the source.""" return self._inpos @inpos.setter def inpos(self, x): self.setInpos(x) @property def revtime(self): """float or PyoObject. Room size.""" return self._revtime @revtime.setter def revtime(self, x): self.setRevtime(x) @property def cutoff(self): """float or PyoObject. High frequency damping.""" return self._cutoff @cutoff.setter def cutoff(self, x): self.setCutoff(x) @property def bal(self): """float or PyoObject. Balance between wet and dry signal.""" return self._bal @bal.setter def bal(self, x): self.setBal(x) @property def roomSize(self): """float. Room size scaler, between 0.25 and 4.0.""" return self._roomSize @roomSize.setter def roomSize(self, x): self.setRoomSize(x) @property def firstRefGain(self): """float. Gain, in dB, of the first reflexions.""" return self._firstRefGain @firstRefGain.setter def firstRefGain(self, x): self.setFirstRefGain(x)
[docs]class SmoothDelay(PyoObject): """ Artifact free sweepable recursive delay. SmoothDelay implements a delay line that does not produce clicks or pitch shifting when the delay time is changing. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to delayed. delay: float or PyoObject, optional Delay time in seconds. Defaults to 0.25. feedback: float or PyoObject, optional Amount of output signal sent back into the delay line. Defaults to 0. crossfade: float, optional Crossfade time, in seconds, between overlaped readers. Defaults to 0.05. maxdelay: float, optional Maximum delay length in seconds. Available only at initialization. Defaults to 1. .. note:: The minimum delay time allowed with SmoothDelay is one sample. It can be computed with : onesamp = 1.0 / s.getSamplingRate() .. seealso:: :py:class:`Delay`, :py:class:`Waveguide` >>> s = Server().boot() >>> s.start() >>> sf = SfPlayer(SNDS_PATH+"/transparent.aif", loop=True, mul=0.3).mix(2).out() >>> lf = Sine(freq=0.1, mul=0.24, add=0.25) >>> sd = SmoothDelay(sf, delay=lf, feedback=0.5, crossfade=0.05, mul=0.7).out() """ def __init__(self, input, delay=0.25, feedback=0, crossfade=0.05, maxdelay=1, mul=1, add=0): pyoArgsAssert(self, "oOOnnOO", input, delay, feedback, crossfade, maxdelay, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._delay = delay self._feedback = feedback self._crossfade = crossfade self._maxdelay = maxdelay self._in_fader = InputFader(input) in_fader, delay, feedback, crossfade, maxdelay, mul, add, lmax = convertArgsToLists( self._in_fader, delay, feedback, crossfade, maxdelay, mul, add ) self._base_objs = [ SmoothDelay_base( wrap(in_fader, i), wrap(delay, i), wrap(feedback, i), wrap(crossfade, i), wrap(maxdelay, i), wrap(mul, i), wrap(add, i), ) for i in range(lmax) ] self._init_play()
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. :Args: x: PyoObject New signal to delayed. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setDelay(self, x): """ Replace the `delay` attribute. :Args: x: float or PyoObject New `delay` attribute. """ pyoArgsAssert(self, "O", x) self._delay = x x, lmax = convertArgsToLists(x) [obj.setDelay(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setFeedback(self, x): """ Replace the `feedback` attribute. :Args: x: float or PyoObject New `feedback` attribute. """ pyoArgsAssert(self, "O", x) self._feedback = x x, lmax = convertArgsToLists(x) [obj.setFeedback(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def setCrossfade(self, x): """ Replace the `crossfade` attribute. :Args: x: float New `crossfade` attribute. """ pyoArgsAssert(self, "n", x) self._crossfade = x x, lmax = convertArgsToLists(x) [obj.setCrossfade(wrap(x, i)) for i, obj in enumerate(self._base_objs)]
[docs] def reset(self): """ Reset the memory buffer to zeros. """ [obj.reset() for obj in self._base_objs]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [ SLMap(0.001, self._maxdelay, "log", "delay", self._delay), SLMap(0.0, 1.0, "lin", "feedback", self._feedback), SLMap(0.0, self._maxdelay, "lin", "crossfade", self._crossfade, dataOnly=True), SLMapMul(self._mul), ] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to delayed.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def delay(self): """float or PyoObject. Delay time in seconds.""" return self._delay @delay.setter def delay(self, x): self.setDelay(x) @property def feedback(self): """float or PyoObject. Amount of output signal sent back into the delay line.""" return self._feedback @feedback.setter def feedback(self, x): self.setFeedback(x) @property def crossfade(self): """float. Crossfade time, in seconds, between overlaps.""" return self._crossfade @crossfade.setter def crossfade(self, x): self.setCrossfade(x)
[docs]class FreqShift(PyoObject): """ Frequency shifting using single sideband amplitude modulation. Shifting frequencies means that the input signal can be detuned, where the harmonic components of the signal are shifted out of harmonic alignment with each other, e.g. a signal with harmonics at 100, 200, 300, 400 and 500 Hz, shifted up by 50 Hz, will have harmonics at 150, 250, 350, 450, and 550 Hz. :Parent: :py:class:`PyoObject` :Args: input: PyoObject Input signal to process. shift: float or PyoObject, optional Amount of shifting in Hertz. Defaults to 100. >>> s = Server().boot() >>> s.start() >>> a = SineLoop(freq=300, feedback=.1, mul=.3) >>> lf1 = Sine(freq=.04, mul=10) >>> lf2 = Sine(freq=.05, mul=10) >>> b = FreqShift(a, shift=lf1, mul=.5).out() >>> c = FreqShift(a, shift=lf2, mul=.5).out(1) """ def __init__(self, input, shift=100, mul=1, add=0): pyoArgsAssert(self, "oOOO", input, shift, mul, add) PyoObject.__init__(self, mul, add) self._input = input self._shift = shift self._in_fader = InputFader(input) in_fader, shift, mul, add, lmax = convertArgsToLists(self._in_fader, shift, mul, add) self._hilb_objs = [] self._sin_objs = [] self._cos_objs = [] self._mod_objs = [] self._base_objs = [] for i in range(lmax): self._hilb_objs.append(Hilbert(wrap(in_fader, i))) self._sin_objs.append(Sine(freq=wrap(shift, i), mul=0.707)) self._cos_objs.append(Sine(freq=wrap(shift, i), phase=0.25, mul=0.707)) self._mod_objs.append( Mix( self._hilb_objs[-1]["real"] * self._sin_objs[-1] - self._hilb_objs[-1]["imag"] * self._cos_objs[-1], mul=wrap(mul, i), add=wrap(add, i), ) ) self._base_objs.extend(self._mod_objs[-1].getBaseObjects()) self._init_play()
[docs] def play(self, dur=0, delay=0): dur, delay, lmax = convertArgsToLists(dur, delay) [obj.play(wrap(dur, i), wrap(delay, i)) for i, obj in enumerate(self._hilb_objs)] [obj.play(wrap(dur, i), wrap(delay, i)) for i, obj in enumerate(self._sin_objs)] [obj.play(wrap(dur, i), wrap(delay, i)) for i, obj in enumerate(self._cos_objs)] [obj.play(wrap(dur, i), wrap(delay, i)) for i, obj in enumerate(self._mod_objs)] return PyoObject.play(self, dur, delay)
[docs] def stop(self, wait=0): [obj.stop(wait) for obj in self._hilb_objs] [obj.stop(wait) for obj in self._sin_objs] [obj.stop(wait) for obj in self._cos_objs] [obj.stop(wait) for obj in self._mod_objs] return PyoObject.stop(self, wait)
[docs] def out(self, chnl=0, inc=1, dur=0, delay=0): dur, delay, lmax = convertArgsToLists(dur, delay) [obj.play(wrap(dur, i), wrap(delay, i)) for i, obj in enumerate(self._hilb_objs)] [obj.play(wrap(dur, i), wrap(delay, i)) for i, obj in enumerate(self._sin_objs)] [obj.play(wrap(dur, i), wrap(delay, i)) for i, obj in enumerate(self._cos_objs)] [obj.play(wrap(dur, i), wrap(delay, i)) for i, obj in enumerate(self._mod_objs)] return PyoObject.out(self, chnl, inc, dur, delay)
[docs] def setInput(self, x, fadetime=0.05): """ Replace the `input` attribute. Parameters: x: PyoObject New signal to process. fadetime: float, optional Crossfade time between old and new input. Defaults to 0.05. """ pyoArgsAssert(self, "oN", x, fadetime) self._input = x self._in_fader.setInput(x, fadetime)
[docs] def setShift(self, x): """ Replace the `shift` attribute. Parameters: x: float or PyoObject New `shift` attribute. """ pyoArgsAssert(self, "O", x) self._shift = x x, lmax = convertArgsToLists(x) [obj.setFreq(wrap(x, i)) for i, obj in enumerate(self._sin_objs)] [obj.setFreq(wrap(x, i)) for i, obj in enumerate(self._cos_objs)]
[docs] def ctrl(self, map_list=None, title=None, wxnoserver=False): self._map_list = [SLMap(-2000.0, 2000.0, "lin", "shift", self._shift), SLMapMul(self._mul)] PyoObject.ctrl(self, map_list, title, wxnoserver)
@property def input(self): """PyoObject. Input signal to pitch shift.""" return self._input @input.setter def input(self, x): self.setInput(x) @property def shift(self): """float or PyoObject. Amount of pitch shift in Hertz.""" return self._shift @shift.setter def shift(self, x): self.setShift(x)