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Discussion Groups | Speech Coding | Recognising the different audio codecs
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
Recognising the different audio codecs - JH WANG - Jan 26 20:40:00 2005
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Hi all, I am now doing a project regarding audio codecs. I am new to all these codecs,so hope to get some help here. Firstly, is there any useful link where i will understand all the different codecs easily?? pls help.. Second, my project is to be able to recognise the different codecs (G711,G723_1,G726,G727,G728,G729) used on the file when given the compressed form. Anyone able to give suggestion on how should i approach this problem?? Thanks in advance!!! Your help is greatly appreciated. Ahao08. |
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Re: Recognising the different audio codecs - Phil Frisbie, Jr. - Jan 27 12:39:00 2005
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JH WANG wrote: > > Hi all, > > I am now doing a project regarding audio codecs. I am new to all > these codecs,so hope to get some help here. Firstly, is there any > useful link where i will understand all the different codecs > easily?? pls help.. No single link that I have found. Using your favorite search site will give you the information you need. > Second, my project is to be able to recognise the different codecs > (G711,G723_1,G726,G727,G728,G729) used on the file when given the > compressed form. Anyone able to give suggestion on how should i > approach this problem?? If you are only looking at the raw encoded bit stream then I know of no way to tell them apart. But if you are looking at encoded FRAMES then you can use the sample frame length and the encoded frame length and make a decent guess. > Thanks in advance!!! Your help is greatly > appreciated. > > Ahao08. -- Phil Frisbie, Jr. Hawk Software http://www.hawksoft.com |
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