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Deluge Community
Based on the Deluge Manual – Amadeus Edition (draft). Being updated for community firmware up to C1.3.

16.14 Time-Stretching & Pitch Shifting

As well as using the audio inputs to capture and record audio, these may also be time-stretched and pitch shifted.

Time-stretch and pitch shift settings are found in the sound editor. Using audio and in particular using your own samples with the Deluge requires a more detailed understanding of time-stretching and pitch shifting.

By default, when you load a sample on the Deluge, its pitch and speed are linked. If you change its pitch up or down, the sample will become shorter or longer, respectively;-

  • Time-stretching. To manually shorten or lengthen a sample within a synth without affecting the pitch, adjust the SPEED parameter - either under SAMPLE 1 in the shortcut grid, or under OSCILLATOR 1 in the sound editor’s menu. Manually time-stretching a sample can make it play faster or slower without changing pitch. Not available if REPEAT MODE is set to ‘STRETCH’, in which case speed is controlled by note length and tempo.
  • Independent pitch and speed control. The sample’s pitch and speed can be treated completely independently, so that adjusting the pitch will not affect speed or length. Enter the “PITCH / SPEED” shortcut for “SAMPLE 1”, or navigate to OSCILLATOR 1 > PITCH/SPEED in the sound editor. The default option is ‘LINKED’. It may be changed to ‘INDEPENDENT’.
  • Sample time-stretching to play in-sync with Deluge’s current tempo. This works by selecting the mode to ‘STRETCH’ within in the REPEAT MODE settings, under SAMPLE 1 in the shortcut grid, or under OSCILLATOR 1 in the sound editor’s menu. Creating a “note” of the sample, will default to a long length (typically 1 bar, 2 bars, or 4, etc…). When playing, the sample will be time-stretched to occupy the entire length of its “note”, at whatever tempo the Deluge is set to. This ‘note’ can be manually shortened or lengthened to stretch the sample to a shorter or longer time.
  • In the previous step, setting sample REPEAT MODE to ‘STRETCH’ automatically makes pitch and speed independent, so that the resulting time stretching does not affect the sample’s pitch, which is a common requirement. Another option, however is available that means that when the speed of the sample changes along with the Deluge’s tempo, its pitch also goes up or down, just like speeding up or slowing down a record. This is set by restoring the settings to PITCH / SPEED or PITCH / SPEED parameter and setting it to ‘LINKED’ again. Pitch and speed are again linked.

Time-stretching

  1. With a synth type set to sample and a file loaded and in-focus use shortcuts Shift + Speed for Sample 1 or sound editor - SelectSelect > OSCILLATOR 1 > SPEED.
  2. turn Turn SelectSelect to adjust the Speed setting. Range -48 to 0 to +48. Default is 0.

Independent pitch / speed control

  1. With a synth type set to sample and a file loaded and in-focus use shortcuts Shift + Pitch Speed for Sample 1 or sound editor - SelectSelect > OSCILLATOR 1 > PITCH AND SPEED.
  2. turn Turn SelectSelect to adjust the ‘Pitch & Speed’ setting to ‘Independent’. Options are ‘Link’ or ‘Independent’.

Time-stretching to match current tempo

  1. With a synth type set to sample and a file loaded and in-focus use shortcuts Shift + Mode for sample 1 or sound editor - SelectSelect > OSCILLATOR 1 > REPEAT MODE.
  2. turn Turn SelectSelect to adjust the setting to ‘STRETCH. This automatically makes pitch and speed independent. Options are ‘LOOP’, ‘STRETCH’, ‘CUT’, ‘ONCE’.