pd9. vline object in Pure Data

The vline object is used to create ramps from one value to another value. Like a previous example, we will use the writesf object to write to external file.

A trigger bang bang bang bang is used to (1) open a file for writing, (2) starting a delay of 50 millisecond to end writing, (3) starting a 50-ms ramp from -1 to +1and (4) start writing.

The audio signal is a ramp from -1 to +1. This is not meant to be listened to, instead it is used to control an audio signal, such as attack and release of a note.

The output is a mono signal of 0.05 second duration:

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