Synopsis

We are going to compose a very simple piece of music in Puredata. We will be introduced to a sine wave oscillator, a line segment and simple filters. Starting with a counter we will establish a timebase and use [select] operations to create part melodies. A separate note sequencer for each of four tracks will run from the same timebase. Creating abstractions, unpacking lists and modulo arithmetic are introduced.

New units used

• [f]: Store a float value.
• [line~] Audio rate line generator.
• [mod] Modulo operator.
• [select] Bang one or more outlets matching message.
• [vline~] More versatile audio line.
• [unpack] Distribute a list of values.
• [swap] Exchange two values.
• [moses] Split a stream of values at threshold.
• [noise~] Random audio signal, white noise.
• [bp~] Band pass filter with resonance.
• [lop~] Low pass filter.
• [throw~] Send audio to a multi connection bus.
• [catch~] Audio bus destination.