B-4 Clockable Delay/Echo
Video
X is signal
Y is clock input
Z is feedback
A = output according to mode
B = output according to mode
Tap tempo enabled
Parameter Min Max Default Description
0 -15 8 0 Delay time multiplier.
1 0 2 0 Output mode.
2 -33 32 -33 Mix.
3 -1 32 -1 Feedback.
This algorithm is a delay/echo effect, primarily intended for processing audio signals, where the
delay time is set from a clock pulse. It operates at a quarter of the standard sample rate (i.e. at about
19kHz) and offers a maximum delay time of about 1700ms.
Input X is the signal input. Any audio signal can be fed in here.
Input Y is the clock input. Any clock pulse in excess of 1V can be used. The time between rising
trigger edges is used to set the delay time. If the time between triggers is greater than the maximum
delay time, the time is divided by two until it is small enough. This way, you always end up with a
rhythmically useful delay time.
Outputs A & B carry signals according to parameter 1:
Parameter value Output mode
0 A is mix; B is delay only.
1 A & B are mix.
2 A & B are delay only.
Parameter 2 controls the output mix between the dry signal and the delay signal. At the default
value of -33, the amount of delay in the mix rises in direct proportion to the amount of feedback.
For values from -32 to 0, the output crossfades between the delay (at -32) and the dry signal (at 0).
For values above 0, the dry signal level is constant and the delay signal level rises with the
parameter value.
Parameter 3 controls the delay feedback. If set to -1 (the default), the feedback is set by the Z
knob/CV, with a range from zero to slightly more than 100%. Otherwise, the feedback is set by the
parameter value, with 32 corresponding to 100%.
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