All pass delay line with cubic interpolation which uses a buffer for its internal memory. See also BufAllpassN which uses no interpolation, and which BufAllpassL 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. |