AllpassC all pass delay line with cubic interpolation

AllpassC.ar(in, maxdelaytime, delaytime, decaytime, mul, add)

AllpassC.kr(in, maxdelaytime, delaytime, decaytime, mul, add)

All pass delay line with cubic interpolation. See also [AllpassN] which uses no interpolation, and [AllpassL] which uses linear interpolation. Cubic interpolation is more computationally expensive than linear, but more accurate.

See also [BufAllpassC].

in - the input signal.

maxdelaytime - the maximum delay time in seconds. used to initialize the delay buffer size.

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.

// Since the allpass delay has no audible effect as a resonator on

// steady state sound ... 

{ AllpassC.ar(WhiteNoise.ar(0.1), 0.01, XLine.kr(0.0001, 0.01, 20), 0.2) }.play;

// ...these examples add the input to the effected sound and compare variants so that you can hear

// the effect of the phase comb:

(

{

z = WhiteNoise.ar(0.2);

z + AllpassN.ar(z, 0.01, XLine.kr(0.0001, 0.01, 20), 0.2)

}.play)

(

{

z = WhiteNoise.ar(0.2);

z + AllpassL.ar(z, 0.01, XLine.kr(0.0001, 0.01, 20), 0.2)

}.play)

(

{

z = WhiteNoise.ar(0.2);

z + AllpassC.ar(z, 0.01, XLine.kr(0.0001, 0.01, 20), 0.2)

}.play)

// used as an echo - doesn't really sound different than Comb,

// but it outputs the input signal immediately (inverted) and the echoes

// are lower in amplitude.

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