Algorithm 134: 8-Tap Delay Bpm; Fdbk Level; Xcouple - Kurzweil K2600 Musician’s Reference

Fdbk Level

The percentage of the delayed signal to feed back or return to the delay input. Turning up
the feedback will cause the effect to repeatedly echo or act as a crude reverb.

Xcouple

8 Tap Delay is a stereo effect. The cross coupling control lets you send the feedback from a
channel to its own input (0% cross coupling) or to the other channelÕs input (100% cross
coupling) or somewhere in between. This control has no effect if the Fdbk Level control is
set to 0%.
HF Damping The -3 dB frequency in Hz of a one pole lowpass Þlter (-6 dB/octave) placed in front of the
delay line. The Þlter is speciÞed for a signal passing through the Þlter once. Multiple
passes through the feedback will cause the signal to become more and more dull.
Dry Bal The left-right balance of the dry signal. A setting of -100% allows only the left dry signal to
pass to the left output, while a setting of 100% lets only the right dry signal pass to the
right output. At 0%, equal amounts of the left and right dry signals pass to their respective
outputs.
Hold A switch which when turned on, locks any signal currently in the delay to play until Hold
is turned off. When Hold is on, no signal can enter the delay and Feedback is set to 100%
behind the scenes. Hold does not affect the HF Damping or Wet/Dry mix.
Loop Crs The coarse delay length of the Loop tap. If the feedback is turned up, this parameter sets
the repeating delay loop length. The resolution of the coarse adjust is 20 milliseconds, but
Þner resolution can be obtained using the Loop Fine parameter. The maximum delay
length is 5.10 seconds (5100ms) for the 8-Tap Delay.
Loop Fine A Þne adjustment to the Loop tap delay length. The delay resolution is 0.2 milliseconds
(ms). Loop Fine is added to Loop Crs (coarse) to get the actual delay length.
Tapn Crs The coarse delay lengths of the output taps (n = 1...8). The resolution of the coarse adjust
is 20 milliseconds, but Þner resolution can be obtained using the Tapn Fine parameters.
The maximum delay length is 5.1 seconds (5100ms) for the 8-Tap Delay.
Tapn Fine A Þne adjustment to the output tap delay lengths (n = 1...8). The delay resolution is 0.2
milliseconds (ms). Tapn Fine is added to Tapn Crs (coarse) to get actual delay lengths.
Tapn Level The amount of signal from each of the taps (n = 1...8) which get sent to the output.
Tapm/-n Bal The left-right balance of each of the stereo taps. The balances are controlled in pairs of
taps: 1 & 5, 2 & 6, 3 & 7, and 4 & 8. The balance controls work in opposite directions for the
two taps in the pair. When the balance is set to -100%, the Þrst tap of the pair is fully right
while the second is fully left. At 0%, equal amounts of the left and right taps pass to their
respective outputs.

Algorithm 134: 8-Tap Delay BPM

In this Algorithm the delay length for any given tap is determined by the tempo, expressed in beats per
minute (BPM), and the delay length of the tap expressed in beats (bts). The tempo alters all tap lengths
together. With the tempo in beats per minute and delay lengths in beats, you can calculate the length of a
delay in seconds as beats/tempo * 60 (sec/min). IMPORTANT NOTE: KDFX has a limited amount of
delay memory available (over 5 seconds for 8 Tap Delay BPM). When slow tempos and/or long lengths
are speciÞed, you may run out of delay memory, at which point the delay length will be cut in half. When
you slow down the tempo, you may Þnd the delays suddenly getting shorter.
A repetitive loop delay is created by turning up the feedback parameter (Fdbk Level). Only the Loop tap is
fed back to the input of the delay, so this is the tap which controls the loop rate. Usually you will want the
Loop tap (LoopLength parameter) to be longer than the other tap lengths. To repeat a pattern on a 4/4
measure (4 beats per measure) simply set LoopLength to 4 bts. The output taps can then be used to Þll in
KDFX Reference
KDFX Algorithm Specifications
10-37