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Help please from all you experts - obscure codec needed
I have been asked to convert a wav file in an obscure format to something more friendly - like an audio file that can be played in most standard players under XP.

I have used Gspot to try and identify the files and it reports that the codec is 0x0120 (PHILIPS CELP), 8000Hz 19 kb/s (1 chnl)

I have looked everywhere for a codec, and failed. I have downloaded many utilities and converters - none will work.

The files were made on some dictation system - Philips I think.

I know I am probably dealing with proprietary architechture here - and Philips only want their files to work with their kit.....

Any ideas?

Many thanks

  • chelgrian
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Help please from all you experts - obscure codec needed
Reply #1
The files were made on some dictation system - Philips I think.


Actually CELP is a variety of MPEG4 audio. The Philips MPEG 4 player available halfway down

http://rarewares.org/mp4.html

might play them. Some other MPEG4 capable players might also play them.

The problem is going to be if the files are in some non-standard or proprietary container format instead of the MPEG standard one.

Help please from all you experts - obscure codec needed
Reply #2
Thanks - I've aready tried that player - no joy.

I think you might be right about the container.

  • kjoonlee
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Help please from all you experts - obscure codec needed
Reply #3
Uhm.. CELP isn't tied to MPEG-4. Speex uses it too.

Code Excited Linear Prediction at Wikipedia

  • jido
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Help please from all you experts - obscure codec needed
Reply #4
If you find a way to re-package it to MPEG-4 you may have a chance with MPEG-4 enabled players like QuickTime.

  • AlanLloyd
  • [*]
Help please from all you experts - obscure codec needed
Reply #5
I have been asked to convert a wav file in an obscure format to something more friendly - like an audio file that can be played in most standard players under XP.

I have used Gspot to try and identify the files and it reports that the codec is 0x0120 (PHILIPS CELP), 8000Hz 19 kb/s (1 chnl)

I have looked everywhere for a codec, and failed. I have downloaded many utilities and converters - none will work.

The files were made on some dictation system - Philips I think.

I know I am probably dealing with proprietary architechture here - and Philips only want their files to work with their kit.....


I have converted Phiips dictations to PCM & then to GSM. I used a Philips SDK for decoding. I note that I have a codec named smcelp.acm.

The Philips SDK wrapped calls to the codec in some simpler calls to one of their DLLs.

Alan Lloyd

  • Nick.C
  • [*][*][*][*][*]
  • Developer
Help please from all you experts - obscure codec needed
Reply #6
He'll either have given up or sorted the problem in the last 34 months....
lossyWAV -q X -a 4 -s h -A --feedback 2 --limit 15848| FLAC -5 -e -p -b 512 -P=4096 -S-