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paulstretch​

paulstretch(
    @stretching 1
    @timeunit 2
    @envtimeunit 2
    @spectral 1
    @framesize 8192
) -> llll

Generates an audio process operation for applying time-stretching to a buffer.

Arguments​

  • @stretching [int/float/llll]: Stretching amount, as single number or envelope. (default: 1).
  • @timeunit [int]: Time unit for @stretching. (default: 2).
    • 0: Milliseconds
    • 1: Samples
    • 2: Duration ratio
    • 3: Milliseconds difference
    • 4: Samples difference
  • @envtimeunit [int]: Time unit for @stretching envelope. (default: 2).
    • 0: Milliseconds
    • 1: Samples
    • 2: Duration ratio
    • 3: Milliseconds difference
    • 4: Samples difference
  • @spectral [int]: Stretching mode. (default: 1).
    • 0: Frequency domain
    • 1: Time domain
  • @framesize [int]: Analysis frame size, in samples. (default: 8192).

Output​

Paulstretch operation [llll]

Usage​

paulstretch is meant to be used with the process function:

$buffer = importaudio('singing.wav'); ## input buffer
$op = paulstretch(@stretching 0.5); ## processing operation
$buffer = $buffer.process($op); ## apply processing
$buffer.view('after paulstretch process')