Playback Modes
The beat repeater effect is simply the process of looping a section of
audio stored in memory. Typically, the effect initiated for a short period
to inject a burst of rhythmic looping audio, and then released allowing
normal audio signal to continue playing. Part of this process is the
capturing and storage of audio and part of the process is playback.
Up to two measures of audio is captured by Buffre, and the manner of
storage and reproduction is dependent on the Playback Modes: Past,
Past (BW<->FW), Current, or Current (BW<->FW).
Waveform of a one-measure drum loop. The following illustrations
refer to this as the baseline of an unprocessed signal.
Mode 1: Past
When Buffre is triggered in Past Playback Mode, a section of pre-sampled audio is
looped, and the incoming audio signal is muted until the trigger is released. The loop
duration also determines the playback start position. The image below depicts a series
of 8th note segments looping after the trigger is received. The looped audio is stored,
prior to receiving the trigger.
With “even” time divisions, such as Quarter or Eighth notes, Past Playback Mode is
more forgiving with high latency setups or with late trigger events (this is a nice way of
saying ‘bad timing’). Enabling the effect, moments after a snare hit, renders a
synchronized “drum roll”.
v1.0.2 operation manual
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