[linux-audio-dev] applying RIAA curves in software

[Steve Harris]

On Tue, Oct 25, 2005 at 06:47:51PM -0500, Richard Smith wrote:
> > I don't want to bring down the great work done by Jamin's authors, but
> > if fidelity is among you goals then using Jamin for RIAA equalisation
> > would be a bad idea.
> 
> Fidelity is in fact the primary goal.
> 
> >
> > It's quite simple to make an RIAA filter with for example two
> > first order lowpass LADSPA plugins. Put them in parallel, set
> > one to 50 Hz and the second to 2120 Hz. Mix the outputs in the
> > ratio 9 to 1, and the result will be a *perfect* RIAA filter.
> 
> Which one is 9  the 50 or the 2120?
> Any suggestions on what program I can use to run these?  Audacity will
> do LADSPA plugings but I rather something I can script.

ecasound? The option format is a bit obtuse, but youve only got to figure
it out once, right :)

- Steve