[PD] biquad~ based riaa filter

[Alexandre Torres Porres]

 "basically I am attempting to 3d print a record cutting head so I mostly
need the production (iRIAA) filter as I will be going straight from PD to a
record lathe.""


WHAT??? [image: :)]

2014-10-14 19:14 GMT-03:00 me.grimm <megrimm at gmail.com>:

> all the biquad talk had me remember trying to figure out the riaa filter
> for vinyl playback/production a couple years back which i never quite
> figured out. attached is what I had attempted.
>
> the playback filter seems to be correct but when I switch to the
> production filter. which should be the inverse of the playback filter, i
> get nothing but I think im swapping the coefficients incorrectly...
>
> anyway, here is the thread this is based off of:
>
> http://www.musicdsp.org/showone.php?id=122
>
> and here is some help on the inverse:
>
> http://music.columbia.edu/pipermail/music-dsp/2003-February/055408.html
>
> maybe someone can make heads or tails of this and give me a help?
>
> basically I am attempting to 3d print a record cutting head so I mostly
> need the production (iRIAA) filter as I will be going straight from PD to a
> record lathe.
>
> thanks!
> m
>
> ps. this was helpful too http://jiiteepee.tripod.com/riaa.html
>
> _______________________________________________
> Pd-list at lists.iem.at mailing list
> UNSUBSCRIBE and account-management ->
> http://lists.puredata.info/listinfo/pd-list
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20141017/a49824a9/attachment.html>