A nested allpass filter is a specific component for Gardner-style reverb
algorithms (ref Hans' own Csound examples), and as such I think it would
be an extremely valuable addition to Csound, generic or not. I for one
would use it a lot! An allpass filter is in any case not directly
equateable to a delay line, as the allpass has extra things to do.

Which is not to say that nested delay-lines might not be fun things to
have too...



Richard Dobson

Josep M Comajuncosas wrote:
> 
> Any new opcode is welcome, but I think a nested allpass filter is not enough
> generic, I think the basic idea os a delay line inside another delay line ,
> something which is not possible with the current deltap/delayw implementation,
> would be more interesting as a general tool. I suggested something like a tapw
> opcode some months ago, to inject audio signals inside a delay line, this could
> do the job, or maybe making the delayw opcode linked to a particular delayr
> unit, something like
> 
>
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