Comb delay line with cubic interpolation which uses a buffer for its internal memory. See also BufCombN which uses no interpolation, and BufCombL which uses linear interpolation. Cubic interpolation is more computationally expensive than linear, but more accurate.
| buf |
Buffer number. |
| in |
The input signal. |
| delaytime |
Delay time in seconds. |
| decaytime |
Time for the echoes to decay by 60 decibels. If this time is negative then the feedback coefficient will be negative, thus emphasizing only odd harmonics at an octave lower. |
// These examples compare the variants, so that you can hear the difference in interpolation// allocate bufferb = Buffer.alloc(s,44100,1);// Comb used as a resonator. The resonant fundamental is equal to// reciprocal of the delay time.{ BufCombN.ar(b.bufnum, WhiteNoise.ar(0.01), XLine.kr(0.0001, 0.01, 20), 0.2) }.play;{ BufCombL.ar(b.bufnum, WhiteNoise.ar(0.01), XLine.kr(0.0001, 0.01, 20), 0.2) }.play;{ BufCombC.ar(b.bufnum, WhiteNoise.ar(0.01), XLine.kr(0.0001, 0.01, 20), 0.2) }.play;// with negative feedback:{ BufCombN.ar(b.bufnum, WhiteNoise.ar(0.01), XLine.kr(0.0001, 0.01, 20), -0.2) }.play;{ BufCombL.ar(b.bufnum, WhiteNoise.ar(0.01), XLine.kr(0.0001, 0.01, 20), -0.2) }.play;{ BufCombC.ar(b.bufnum, WhiteNoise.ar(0.01), XLine.kr(0.0001, 0.01, 20), -0.2) }.play;// used as an echo.{ BufCombC.ar(b.bufnum, Decay.ar(Dust.ar(1,0.5), 0.2, WhiteNoise.ar), 0.2, 3) }.play;