Re: [linux-audio-user] Nasty, Raspy Raw Data (Was: Removing distortion)

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Subject: Re: [linux-audio-user] Nasty, Raspy Raw Data (Was: Removing distortion)
From: Joern Nettingsmeier (nettings_AT_folkwang-hochschule.de)
Date: Thu Jul 11 2002 - 13:56:29 EEST


Erik de Castro Lopo wrote:
>
> On Wed, 10 Jul 2002 17:48:29 +0200
> Joern Nettingsmeier <nettings_AT_folkwang-hochschule.de> wrote:
>
> > "Kingsley G. Morse Jr." wrote:
> > >
> > > Thanks for the suggestions, everyone.
> > >
> > > It would be great to clean up the distortion.
> > >
> > > It seems to me that sharing its raw data may improve
> > > our discussion.
> > >
> > > Toward that end, a short sample is at
> > >
> > > http://www.nas.com/~change/private/dist.wav
> > >
> > > The distortion is about 3 seconds into the sample,
> > > after the speaker pauses and says the word
> > > "Following".
> >
> > excuse me, but the distortion is really not the main problem with that
> > sample...
> > alsaplayer seems to think it's 9khz sampling rate,
>
> Here's the output from sndfile-info (part of libsndfile):
>
> erikd_AT_coltrane > sndfile-info dist.wav
> Version : libsndfile-1.0.0
>
> ========================================
> File : dist.wav
> RIFF : 99584
> WAVE
> fmt : 16
> Format : 0x1 => WAVE_FORMAT_PCM
> Channels : 1
> Sample Rate : 9600
> Block Align : 2
> Bit Width : 16
> Bytes/sec : 19200
> data : 99548
>
> ----------------------------------------
> Sample Rate : 9600
> Samples : 49774
> Channels : 1
> Format : 0x00010002
> Sections : 1
> Seekable : TRUE
> Signal Max : 27886
>
> > and there seems to be
> > an endianness problem or something equally weird.
>
> There's something weird about it but its not an endian-ness problem.
>
> I think is just a really, really, REALLY crappy recording.
>
> Since this is more that just clipping, you will not be able to remove
> the distortion.

if this is all there is, forget it. try to transcribe the words, and
throw it away :(


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