BufCombN buffer based comb delay line with no interpolation


BufCombNar(buf, in, delaytime, decaytime, mul, add)

BufCombN.kr(buf, in, delaytime, decaytime, mul, add)


Comb delay line with no interpolation which uses a buffer for its internal memory. See also [BufCombL] which uses linear interpolation, and BufCombC which uses cubic interpolation. Cubic interpolation is more computationally expensive than linear, but more accurate.


See also CombN.


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 buffer

b = 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. 

{ BufCombN.ar(b.bufnum, Decay.ar(Dust.ar(1,0.5), 0.2, WhiteNoise.ar), 0.2, 3) }.play;

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