19 июля 2011, 09:19 от Konstantinos Birkos <kmpir...@ece.upatras.gr>:
>
>
>
> 19 июля 2011, 09:19 от Konstantinos Birkos <kmpir...@ece.upatras.gr>:
> > Actually I want to perform sequential audio recordings with a fixed
> > duration, compress the tracks and send them via ftp to a remote
> > location. I want the minimum gap possible between successive tracks.
> > I mean that when the first track ends, recording the second track has to
> > be initiated almost immediately. Simply calling arecord on a periodical
> > basis introduces some gaps between tracks because I suppose the audio
> > device has to be opened and closed every time and configured with the
> > recording parameters. If I make the period I call arecord equal to the
> > recording period I receive errors from the audio device that indicate
> > that it is not yet ready from the previous recording.
> >
> > So I thought of using a custom program like this, in which every x
> > seconds I could create a wav file. At the same time, the contents of the
> > buffer would be directly available for the new recording, minimizing losses.
> >
> > Regards,
> > Konstantinos
> >
IIRC, 'arecord' can record in raw (i.e. headerless) format and can write to
stdout. SoX and ecasound' can do this too.
So, just write a script (I'd recommend) Perl) that receives this headerless raw
data from stdin and packs the data into WAV format.
Regards,
Sergei.
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