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Re: [Cs-dev] New opcodes useful?

Date2007-12-05 20:46
FromMichael Gogins
SubjectRe: [Cs-dev] New opcodes useful?
That's great! I'm looking forward to it.

Regards,
Mike

-----Original Message-----
>From: Anthony Kozar 
>Sent: Dec 5, 2007 2:55 PM
>To: Csound Developer list 
>Subject: Re: [Cs-dev] New opcodes useful?
>
>I am very glad that several people seem interested in these opcodes.  I will
>try to get them into CVS tonight.
>
>My new chebyshevpoly opcode should definitely be useful for your piece.  I
>am wondering whether we need versions with k-rate input/output or a-rate
>coefficients?  Hopefully, the method I am using to recalculate the linear
>combination of Chebyshev polynomials is efficient enough -- perhaps it could
>be improved.
>
>You may also be interested in experimenting with powershape which also
>produces smoothly varying distortion without clipping for any signal with
>known upper/lower bounds.
>
>Anthony Kozar
>anthonykozar AT sbcglobal DOT net
>http://anthonykozar.net/
>
>Michael Gogins wrote on 12/5/07 8:08 AM:
>
>> As it happens, I am currently working on a piece that uses the distort
>> opcode, and it is an interactive piece where I recompute the wavetable for
>> the Chebyshev polynomial on the fly by multiplying all of the coefficients
>> in the polynomial (i.e. I change the numbers in the function table
>> interactively). With small tables this is smooth and does not cause clicks,
>> but with larger (quieter and better) tables there are clicks. So, I think
>> your opcodes sound like a better and smoother way of doing the same thing,
>> and I am looking forward to trying them out.
>
>
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