05-math-ops.py - Audio objects and arithmetic expresssions. — Pyo 1.0.4 documentation

Pyo 1.0.4 documentation

# 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())