Reiterate

To reiterate what I've said:

1.

A waveform is defined by specifying a sequence of segments.

2.

A segment has an amplitude and a duration.

3.

The sequence is iterated, and on each iteration, every segment changes its amplitude and duration by a specified increment.

4.

When the amplitude and duration reach their limits, they reverse the direction of their change.

Here's an extended example (80 seconds long). This is a sequence with eight segments, and both the duration and the amplitude of every segment are changing at unique increments.

This is a plot of 8 states of the transformation, taken 5 seconds apart over the first 40 seconds.

Sound example 5: 80 seconds