Re: how to resample after a LADSPA plugin ?

--- On Thu, 5/16/13, Joel Roth <[email protected]> wrote:

> From: Joel Roth <[email protected]>
> Subject: Re: [ecasound] how to resample after a LADSPA plugin ?
> To: [email protected]
> Date: Thursday, May 16, 2013, 4:28 PM
> Sergei Steshenko wrote:
> > Hello,
> > 
> > I have the following command line:
> > 
> > ecasound -D -z:nodb -f 16,2,44100 -i stdin -eli:1030 -b
> 4096 -ev -x -f s16_le,2,44100 -o alsahw,0,0
> > 
> > which works as expected. It is a part of longer chain,
> so data is piped into stdin.
> > 
> > I want to do two things:
> > 
> > 1) replace 's16_le,2,44100' with 's16_le,2,88200', i.e
> to make ALSA device work with 88200Hz sample rate;
> > 
> > 2) insert resampling just before it, but _after_ the
> LADSPA plugin, i.e. after '-eli:1030'.
> > 
> > 
> > How can I do this ?
> 
> Hi,
> 
> According to 'man ecasound' the -f argument gets applied to
> audio
> objects (i.e. -i and -o arguments) that *follow* the -f
> argument.
> 
> So as I understand it,
> 
> ecasound -D -z:nodb -f 16,2,44100 -i stdin -eli:1030 -b 4096
> -ev -x -f s16_le,2,88200 -o alsahw,0,0
> 
> will accomplish what you want. In other words, ecasound will
> perform sample
> rate conversion automatically just prior to output.
> 
> Is there a reason to think this *isn't* doing what you
> want?
> 
> Regards,
> 
> Joel
>  
> > Thanks,
> >   Sergei.
> > 


"Is there a reason to think this *isn't* doing what you want?" - yes, it simply plays sound at 2x pitch and speed.

Regards,
  Sergei.

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