Hi, I have downloaded a melp1200 c code from the internet and am trying to port it adsp-2188. There is an array declared in qnt12_cb, by the name of res256x64x64x64 which has a size of 0x2300. The maximum segment which I can define is of 8k. I am using overlays. Is there a way to fit this array into the memory without decomposing it??? Other wise I will have to make segments of this array and keep a check on index bounds. On the other hand if someone can tell me how this array was calculated, I can add some code instead of declaring this whole array. Thanks and Regards, Saba
Melp1200 data memory
Started by ●August 8, 2007
Reply by ●August 18, 20072007-08-18
This array was calculated by training codebooks during the MELPe vocoder design, using a large speech database. So you cannot "compute" it on the fly instead of using the codebook stored in the DSP memory. But while you are focusing on the codebook, you may be creating a much greater issue... Please note that the MELPe source code is copyright protected for all applications other than US gov & NATO! Even if you intend its derivative on ADSP-2188, derived from the C code. Commercializing & using the MELPe and its source code is not free! So, you are advised to contact all Intellectual Property Rights (IPR) holders if you intend to commercialize it or use it for any application other than for US gov & NATO! For the 1200 bps MELPe: the IPR holders include: TI, Microsoft, Compandent, and AT&T/Lucent. For more information please see: http://www.compandent.com/melpe_faq.htm http://www.compandent.com/products_melpe.htm staseer wrote:> Hi, > I have downloaded a melp1200 c code from the internet and am trying to > port it adsp-2188. There is an array declared in qnt12_cb, by the name of > > res256x64x64x64 which has a size of 0x2300. The maximum segment which I > can define is of 8k. I am using overlays. Is there a way to fit this array > into the memory without decomposing it??? Other wise I will have to make > segments of this array and keep a check on index bounds. On the other hand > if someone can tell me how this array was calculated, I can add some code > instead of declaring this whole array. > > Thanks and Regards, > Saba
Reply by ●August 18, 20072007-08-18
This array was calculated by training codebooks during the MELPe vocoder design, using a large speech database. So you cannot "compute" it on the fly instead of using the codebook stored in the DSP memory. But while you are focusing on the codebook, you may be creating a much greater issue... Please note that the MELPe source code is copyright protected for all applications other than US gov & NATO! Even if you intend to commercialize its derivative on ADSP-2188, derived from the C code. Commercializing & using the MELPe and its source code or its derivative is not free! So, you are advised to contact all Intellectual Property Rights (IPR) holders if you intend to commercialize it or use it for any application other than for US gov & NATO! For the 1200 bps MELPe: the IPR holders include: TI, Microsoft, Compandent, and AT&T/Lucent. For more information please see: http://www.compandent.com/melpe_faq.htm http://www.compandent.com/products_melpe.htm staseer wrote:> Hi, > I have downloaded a melp1200 c code from the internet and am trying to > port it adsp-2188. There is an array declared in qnt12_cb, by the name of > > res256x64x64x64 which has a size of 0x2300. The maximum segment which I > can define is of 8k. I am using overlays. Is there a way to fit this array > into the memory without decomposing it??? Other wise I will have to make > segments of this array and keep a check on index bounds. On the other hand > if someone can tell me how this array was calculated, I can add some code > instead of declaring this whole array. > > Thanks and Regards, > Saba
Reply by ●November 20, 20182018-11-20
There's lots of helpful information and data about the MELP vocoder and MELPe codec at: Http://www.melpe.com Incluing implementations, software, hardware and solutions