Speex dev - Aug 2004 - [Bug] PCM file not recognized

Hi,

I am using Speex to compress speech samples used for dictation.  I am
thrilled by the compression ratios Speex achieves with almost no loss in
quality.

However, I have come across a few files which Speex (I use the Windows
variant) refuses to compress.  I have put a sample file at
http://leggewie.biz/test.wav.  The error message I receive is
"Unsupported WAVE file fmt chunk, not PCM?".  The file uses PCM,
though.

I am not subscribed to the list, a cc: will be greatly appreciated.

Regards

Rolf
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Hi,
I can confirm the problem with your sample. See below:

F:\Downloads\AudioCodecs\Samples>sfinfo test.wav
=======================================test.wav
size : 94946
RIFF : 94938
WAVE
fmt  : 18
  Format        : 0x1 => WAVE_FORMAT_PCM
  Channels      : 1
  Sample Rate   : 11025
  Block Align   : 2
  Bit Width     : 16
  Bytes/sec     : 22050
fact : 4
  samples : 47444
data : 94888

---------------------------------
Sample Rate : 11025
Samples     : 47444
Channels    : 1
Bit Width   : 16
Format      : 0x00010001
Sections    : 1
Seekable    : TRUE
Signal Max  : 16453

<p>F:\Downloads\AudioCodecs\Samples>speexenc test.wav test2.spx
Unsupported WAVE file fmt chunk, not PCM?

F:\Downloads\AudioCodecs\Samples>

However, if you are using windows, you may wish to 'speexdrop' from:
http://homepage.ntlworld.com/jfe1205/others.html . This is a windows gui
implementation of the current speex libs and does encode your sample (it
uses a completely different file input routine). You can also play your
encoded files back through speexdrop.

John Edwards
----- Original Message -----
From: "Rolf Leggewie" <leggewie@expires-2003-01-31.nexgo.de>
To: <speex-dev@xiph.org>
Sent: Thursday, January 09, 2003 2:28 PM
Subject: [speex-dev] [Bug] PCM file not recognized

<p>> Hi,
>
> I am using Speex to compress speech samples used for dictation.  I am
> thrilled by the compression ratios Speex achieves with almost no loss in
> quality.
>
> However, I have come across a few files which Speex (I use the Windows
> variant) refuses to compress.  I have put a sample file at
> http://leggewie.biz/test.wav.  The error message I receive is
> "Unsupported WAVE file fmt chunk, not PCM?".  The file uses PCM,
though.
>
> I am not subscribed to the list, a cc: will be greatly appreciated.
>
> Regards
>
> Rolf
> --- >8 ----
> List archives:  http://www.xiph.org/archives/
> Ogg project homepage: http://www.xiph.org/ogg/
> To unsubscribe from this list, send a message to
'speex-dev-request@xiph.org'
> containing only the word 'unsubscribe' in the body.  No subject is
needed.
> Unsubscribe messages sent to the list will be ignored/filtered.
>
<p>--- >8 ----
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Ogg project homepage: http://www.xiph.org/ogg/
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Unsubscribe messages sent to the list will be ignored/filtered.

> However, I have come across a few files which Speex (I use the Windows
> variant) refuses to compress.  I have put a sample file at
> http://leggewie.biz/test.wav.  The error message I receive is
> "Unsupported WAVE file fmt chunk, not PCM?".  The file uses PCM,
though.
I've recently fixed that problem (along with other wave file handling
bugs). The fix is in CVS and will be released in the upcoming rc1
release within about a week. Sorry for the inconvenience.

        Jean-Marc


-- 
Jean-Marc Valin, M.Sc.A.
LABORIUS (http://www.gel.usherb.ca/laborius)
Université de Sherbrooke, Québec, Canada

<p>
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