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[Csnd] Phase Filters implementation

Date2014-03-19 21:44
FromDave Seidel
Subject[Csnd] Phase Filters implementation
Hi all,

Does any have, or know of, a Csound implementation of Max Mathews' Phase Filters? I'm trying learn about them, and would love to try using them.

I'm aware of Diane Douglas' work in this area, but unfortunately I can't use her code because I'm a Linux user, and thus can't run the Max/MSP runtime or Max 4 Live, which are the platforms she has been developing for.

Thanks,
Dave

Date2014-03-20 09:41
FromJoel Ross
SubjectRe: [Csnd] Phase Filters implementation
I have an implementation in csound somewhere but don't have it right
now. The code follows directly the difference equation found here I
believe:

https://ccrma.stanford.edu/~jos/smac03maxjos/Oscillator_based_Complex_Number.html

This is from the paper by Max Mathews and Julius Smith:
https://ccrma.stanford.edu/~jos/smac03maxjos/

Its really just a resonator, and on its own has only minor differences
from any other to use. Controlling the gain is a little tricky, they
have a tendency to explode. Other than that I'm not sure they can be
called 'phasor filters' without the control mechanism that Max wrapped
around them.

Regards,
 Joel

On 19 March 2014 21:44, Dave Seidel  wrote:
> Hi all,
>
> Does any have, or know of, a Csound implementation of Max Mathews' Phase
> Filters? I'm trying learn about them, and would love to try using them.
>
> I'm aware of Diane Douglas' work in this area, but unfortunately I can't use
> her code because I'm a Linux user, and thus can't run the Max/MSP runtime or
> Max 4 Live, which are the platforms she has been developing for.
>
> Thanks,
> Dave


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Date2014-03-20 11:54
FromDave Seidel
SubjectRe: [Csnd] Phase Filters implementation
Thanks, Joel. I have a copy of the paper, good to have the shorter page as well. My math skills are pretty primitive, so I have a difficult time trying to translate equations into sound code. I'm trying to get hold of a copy of the C program mentioned in the Mathews/Smith paper.

- Dave


On Thu, Mar 20, 2014 at 5:41 AM, Joel Ross <joel.binarybrain@gmail.com> wrote:
I have an implementation in csound somewhere but don't have it right
now. The code follows directly the difference equation found here I
believe:

https://ccrma.stanford.edu/~jos/smac03maxjos/Oscillator_based_Complex_Number.html

This is from the paper by Max Mathews and Julius Smith:
https://ccrma.stanford.edu/~jos/smac03maxjos/

Its really just a resonator, and on its own has only minor differences
from any other to use. Controlling the gain is a little tricky, they
have a tendency to explode. Other than that I'm not sure they can be
called 'phasor filters' without the control mechanism that Max wrapped
around them.

Regards,
 Joel

On 19 March 2014 21:44, Dave Seidel <dave.seidel@gmail.com> wrote:
> Hi all,
>
> Does any have, or know of, a Csound implementation of Max Mathews' Phase
> Filters? I'm trying learn about them, and would love to try using them.
>
> I'm aware of Diane Douglas' work in this area, but unfortunately I can't use
> her code because I'm a Linux user, and thus can't run the Max/MSP runtime or
> Max 4 Live, which are the platforms she has been developing for.
>
> Thanks,
> Dave


Send bugs reports to the Sourceforge bug trackers
csound6:
            https://sourceforge.net/p/csound/tickets/
csound5:
            https://sourceforge.net/p/csound/bugs/
Discussions of bugs and features can be posted here
To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"