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Discussion Groups | Speech Coding | 1.2Kbps version of MELP Speech Coder..?
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
1.2Kbps version of MELP Speech Coder..? - Khubaib - Jun 15 18:25:00 2004
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Hi! I want to know about the 1.2Kbps MELP Speech Coder. Actually, 2.4Kbps MELP is available. But, i want to know about the 1.2KBps version. There is a paper available online which explains a little about ongoing research about 1.2Kbps MELP. Is there a speech coding standard at (or near to) 1Kbps, having voice quality near (or a little degraded) than 2.4Kbps MELP..?. Also, please link me to any good documents explaining MELP speech coding standard in details (algorithmic details)..? Regards Khubaib |
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Re: 1.2Kbps version of MELP Speech Coder..? - Christian Sturt - Jun 16 7:21:00 2004
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have a look at: A 1200/2400 BPS Coding Suite Based on MELP Tian Wang, Kazuhito Koishida, Vladimir Cuperman, Allen Gersho, and John S. Collura It was published in the 2002 Speech Coding Workshop. This coder was selected as the NATO codec. It was in the NATO standardization (standardisation for those with real English!) section. See http://kt-lab.ics.nitech.ac.jp/~sako/scw/web/official/index.php?PAGE=4&SUBPAGE=3 If I remember correctly, the paper is rather brief (as you would expect for a conference) but it will reference better papers. You'll need to be a IEEE member to access it via their website, or there may be some nice yahoo member who has it laying around. Regards Dr Christian Sturt --- Khubaib <> wrote: --------------------------------- Hi! I want to know about the 1.2Kbps MELP Speech Coder. Actually, 2.4Kbps MELP is available. But, i want to know about the 1.2KBps version. There is a paper available online which explains a little about ongoing research about 1.2Kbps MELP. Is there a speech coding standard at (or near to) 1Kbps, having voice quality near (or a little degraded) than 2.4Kbps MELP..?. Also, please link me to any good documents explaining MELP speech coding standard in details (algorithmic details)..? Regards Khubaib _____________________________________ Yahoo! Groups Sponsor ADVERTISEMENT --------------------------------- Yahoo! Groups Links To ===== Christian Sturt Multimedia and DSP Research Group Centre For Communication Systems Research University Of Surrey :http//www.ee.surrey.ac.uk/showstaff?sturt (Mob 07881 786825 ___________________________________________________________ALL-NEW Yahoo! Messenger - sooooo many all-new ways to express yourself http://uk.messenger.yahoo.com |
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Re: 1.2Kbps version of MELP Speech Coder..? - Phil Frisbie, Jr. - Jun 16 16:31:00 2004
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Khubaib wrote: > Hi! > I want to know about the 1.2Kbps MELP Speech Coder. Actually, 2.4Kbps > MELP is available. But, i want to know about the 1.2KBps version. > There is a paper available online which explains a little about > ongoing research about 1.2Kbps MELP. Is there a speech coding > standard at (or near to) 1Kbps, having voice quality near (or a > little degraded) than 2.4Kbps MELP..?. Also, please link me to any > good documents explaining MELP speech coding standard in details > (algorithmic details)..? Texas Instruments patented MELP, then sold it to Atlanta Signal Processors, which is now owned by Polycom. There is a paper posted at http://www.aspi.com/tech/specs/pdfs/melp.pdf that details the algorithm. I do not think the patent has expired, so you will need to contact Atlanta Signal Processors to license MELP. > Regards > Khubaib -- Phil Frisbie, Jr. Hawk Software http://www.hawksoft.com |
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