Simple delay line with no interpolation which uses a buffer for its internal memory. See also BufDelayL which uses linear interpolation, and BufDelayC which uses cubic interpolation. Cubic interpolation is more computationally expensive than linear, but more accurate.
buf |
Buffer number. NOTE: The buffers provided to any of the BufDelay units must be one channel. If you want to delay a multichannel signal, you must provide as many separate (one-channel) buffers as there are input channels. |
in |
The input signal. |
delaytime |
Delay time in seconds. |
mul | |
add |
// allocate buffer
b = Buffer.alloc(s,44100,1);
(
// Dust randomly triggers Decay to create an exponential
// decay envelope for the WhiteNoise input source
{
z = Decay.ar(Dust.ar(1,0.5), 0.3, WhiteNoise.ar);
BufDelayN.ar(b.bufnum, z, 0.2, 1, z); // input is mixed with delay via the add input
}.play
)
b.free;
// multichannel
// two channels, two buffers
b = Buffer.allocConsecutive(2, s, 32768, 1);
a = { |bufs = #[0, 1]|
var sig = SinOsc.ar([440, 880]) * Decay2.kr(Impulse.kr([2, 4]), 0.01, 0.15);
sig + BufDelayN.ar(bufs, sig, delaytime: 0.125)
}.play(args: [bufs: b]);
a.free;
b.do(_.free);