05-math-ops.py - Audio objects and arithmetic expresssions.¶
This script shows how a PyoObject reacts when used inside an arithmetic expression.
Multiplication, addition, division and substraction can be applied between pyo objects or between pyo objects and numbers. Doing so returns a Dummy object that outputs the result of the operation.
A Dummy object is only a place holder to keep track of arithmetic operations on audio objects.
PyoObject can also be used in expression with the exponent (**), modulo (%) and unary negative (-) operators.
from pyo import * s = Server().boot() s.amp = 0.1 # Full scale sine wave a = Sine() # Creates a Dummy object `b` with `mul` attribute # set to 0.5 and leaves `a` unchanged. b = a * 0.5 b.out() # Instance of Dummy class print(b) # Computes a ring modulation between two PyoObjects # and scales the amplitude of the resulting signal. c = Sine(300) d = a * c * 0.3 d.out() # PyoObject can be used with Exponent operator. e = c ** 10 * 0.4 e.out(1) # Displays the ringmod and the rectified signals. sp = Spectrum([d, e]) sc = Scope([d, e]) s.gui(locals())