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Test Vectors for MELP Vocoder...

Started by Khubaib in Speech Coding19 years ago 1 reply

Dear members! I need different test vectors (preferably standard test vectors) for testing MELP 2400bps voice coding...

Dear members! I need different test vectors (preferably standard test vectors) for testing MELP 2400bps voice coding standard. I am in the process of implementing MELP 2400 vocoder on different platforms and i need test vectors to test for thier validity. Are


AMR-NB Optimization

Started by venkat ramanan in Speech Coding19 years ago 2 replies

Hai everybody, Can anybody suggest me a method to optimize the ACELP search in AMR-NB codec?(DFTS method) so that there is no...

Hai everybody, Can anybody suggest me a method to optimize the ACELP search in AMR-NB codec?(DFTS method) so that there is no reduction in speech quality when compared to original? I have already gone through some IEEE papers. But speech quality is not maintained. They reduced the


MELP Algorithm IP

Started by plsymonds in Speech Coding19 years ago 3 replies

Hi All, I am busy looking into the MELP algorithm and as Texas Instruments has intellectual property rights on the...

Hi All, I am busy looking into the MELP algorithm and as Texas Instruments has intellectual property rights on the algorithm I am interested in finding out more about the legal issues (such as copyright, royalties etc. etc.) pertaining to the use of the


Pitch problems

Started by viper4295 in Speech Coding19 years ago 2 replies

Hi, I am currently doing this project of Classification and categorisation on the basis of speech. I have to sort the...

Hi, I am currently doing this project of Classification and categorisation on the basis of speech. I have to sort the samples into male or female and into age categories on the basis of the speech samples. For this i have used pitch as a fetaure and on this i


Running G.726 test vector (Newbie)

Started by pavan_gup in Speech Coding19 years ago 3 replies

Hi, I am running the test vectors for G.726 codec on ARM9E. They have been downloaded from ITU-T website. However, output...

Hi, I am running the test vectors for G.726 codec on ARM9E. They have been downloaded from ITU-T website. However, output differs from the expected output file. Does anyone have any clue as to why this may be happening. Codec code has been downloaded fr


AMR-WB optimization

Started by Anonymous in Speech Coding19 years ago 4 replies

Hello everybody, I am working on the optimization of the AMR-WB speech codec code obtained from ITU-T on the c6211 dsk. I...

Hello everybody, I am working on the optimization of the AMR-WB speech codec code obtained from ITU-T on the c6211 dsk. I have done the optimization techniques suggested for TI's optimizing compiler like using intrinsics, loop trip counts, scratch-pad memory etc..BUt still haven't


Fast convolution

Started by venkat ramanan in Speech Coding19 years ago 3 replies

hai, I am searching for a fast convolution algorithm which has order less than O(MN). I have already tried FFT. Is there any...

hai, I am searching for a fast convolution algorithm which has order less than O(MN). I have already tried FFT. Is there any other method available to compute the correlation in a faster manner? Awaiting reponse.. venkat ? Mistakes are not end of the world


[Fwd: Re: Re: Fast convolution]

Started by Jeff Brower in Speech Coding19 years ago 1 reply

-------- Original Message -------- Subject: Re: Re: [speechcoding] Fast convolution Date: 25 Feb 2005 03:31:46 -0000 From:...

-------- Original Message -------- Subject: Re: Re: [speechcoding] Fast convolution Date: 25 Feb 2005 03:31:46 -0000 From: "venkat ramanan" <> Reply-To: "venkat ramanan" <> To: "Jeff Brower" <>


pitch predictor in celp

Started by tunkeat in Speech Coding19 years ago 4 replies

hi all, i am puzzled about the use of long-time predictor in celp. i see in some implementations, there is a long-time...

hi all, i am puzzled about the use of long-time predictor in celp. i see in some implementations, there is a long-time predictor (ltp) but in others, eg fs-1016, there isn't. if I understand correctly, the ltp is used to compute the gain. but why is there a need


CELP - analysed and synthesized filter

Started by dunjie17 in Speech Coding19 years ago 1 reply

hi, I read that the "analysed" filter is a FIR (stability is ensure) but the synthesized filter is a IIR filter...

hi, I read that the "analysed" filter is a FIR (stability is ensure) but the synthesized filter is a IIR filter (inverse filter). is that right? I don't see how it is so? and if it is so, how is stability ensured? rgds, tk


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