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Discussion Groups | Speech Coding | G.729 Codec question
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
G711Speech Codec - Author Unknown - Jan 9 2:14:00 2005
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hi friends, Im a final year student of engineering.Im doing a project on G711 and am implementing it in TMS320C55X DSP.Can anybody give me the information on G711 Speech Codec and its useful links.I will be thankful for all of them. Thanking u all in advance, Regards, Vijaya Lakshmi. |
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G.729 Codec question - ³¯«a¥ô - Jan 12 4:12:00 2005
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Hello Everybody, I prepare a pcm file that format is 16bit 8khz mono, the file size is 49200 bytes. After encode to G.729 format file, the size is 48000 bytes. I don't know why the size just a little reduce? According G.729 spec. Should it convert to 8kbit/s ? Could somebody can tell me? Thanks all of guys read this post. Chen Guan Ren |
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Re: G.729 Codec question - Harland Christofferson - Jan 12 10:06:00 2005
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the non-linear data could still be stored as 16-bit words in your file ... the least-significant-byte might be your valid non-linear data and the other three bytes in the word. does your implementation pack the non-linear bytes into one 16-bit word? ---------------------------------------------------------------------- Zero Crossings, Inc. -- Embedded and Digital Signal Processing Systems http://www.zerocrossings.com/ |
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Re: G711Speech Codec - Harland Christofferson - Jan 12 11:01:00 2005
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do you have the spectrum digital dsk for that family of dsp? i think there are g.711 functions included in that kit. At Sunday, 09 January 2005, wrote: >hi friends, > >Im a final year student of engineering.Im doing a project on G711 and am implementing it in TMS320C55X DSP.Can anybody give me the information on G711 Speech Codec and its useful links.I will be thankful for all of them. > >Thanking u all in advance, >Regards, >Vijaya Lakshmi. ---------------------------------------------------------------------- Zero Crossings, Inc. -- Embedded and Digital Signal Processing Systems http://www.zerocrossings.com/ |
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Re: G.729 Codec question - chetan k - Jan 13 18:32:00 2005
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Message: 1 Date: Wed, 12 Jan 2005 16:12:51 +0800 (CST) From: ³¯«a¥ô <> Subject: G.729 Codec question Hi, I guess the data is in the packed format. That is each bit will be converted into a byte. Check if you are including bits2prm function in your code. Hope this helps ===== With Rgds Chetan k. __________________________________ |
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Re: G711Speech Codec - chetan k - Jan 13 18:42:00 2005
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Message: 3 Date: Wed, 12 Jan 2005 10:01:22 -0500 From: Harland Christofferson <> Subject: Re: G711Speech Codec Hi, Go to the ITU-T site, and from there you can download the specs as well as the Code. You can download upto 3 specs for no cost. You can reach it @ the following website http://ecs.itu.ch/cgi-bin/ebookshop ===== With Rgds Chetan k. __________________________________ |
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