Regarding CELP architecture

Started by madhusudhan surya in Speech Coding18 years ago

Hi, Most of the celp coders today are implemented in DSP platforms and I didnt come across vlsi implementation of this celp...

Hi, Most of the celp coders today are implemented in DSP platforms and I didnt come across vlsi implementation of this celp coders.If anybody have any information regarding asic implementation of celp coder,please mail me. At present I am doing project regarding CELP


Regarding algebraic codebook search of CELP

Started by mata mata in Speech Coding16 years ago

Hi all, did anyone had builded a matlab function of algebraic codebook search in CELP ? is it possible to build a simulation...

Hi all, did anyone had builded a matlab function of algebraic codebook search in CELP ? is it possible to build a simulation program of CELP using matlab ? -regards arida ---------------------------------


CELP using VC++

Started by yaso21101975 in Speech Coding12 years ago 2 replies

hi all I am working on a project on audio compression using code excited linear prediction (CELP) techniques. My aim is to design a...

hi all I am working on a project on audio compression using code excited linear prediction (CELP) techniques. My aim is to design a basic working CELP codec using visual c++ under windows. i have some problem reading data chunk from riff format file using vc++ whene i try to read a block of 240 byte only 60 byte are read and the rest of buffer is zero i try different commandes (_read,fread...


CELP IN SIMULINK

Started by neeta chapatwala in Speech Coding11 years ago

Hello, I am doing M.Tech. project on CELP in real time using DSP kit TMS320c6713 Note that I had refer CELP demo given in simulink. ...

Hello, I am doing M.Tech. project on CELP in real time using DSP kit TMS320c6713 Note that I had refer CELP demo given in simulink. I am using simple gaussian codebook ,LPC parameters(LPC co-efficients and reflection co-efficients). My problem is how to find index for codebook? what will be gain for excitation signal coming from codebook?This gain will be constant or variable ...


celp/fastica/simulink

Started by nice...@hotmail.com in Speech Coding13 years ago

Dear all: 1. I need CELP / MELP source code or program compatible with windows OS. 2. I am implementing a datahiding technique (echo...

Dear all: 1. I need CELP / MELP source code or program compatible with windows OS. 2. I am implementing a datahiding technique (echo data hiding technique) using simulink. i had already written a code for it. so i need a help in DSP simulink for implementing the technique. 3. i successfully could seperate two mixed sound with FastICA technique, but after applying CELP


Design of basic CELP codec

Started by Amit Solanki in Speech Coding12 years ago 2 replies

I am working on a project on audio compression using code excited linear prediction (CELP) techniques. My aim is to design a basic working CELP...

I am working on a project on audio compression using code excited linear prediction (CELP) techniques. My aim is to design a basic working CELP codec in matlab. Since audio processing is new to me I am confused with some of the details of algorithms:- Firstly, the input to Short Term predictor(STP) is the original or the preprocessed speech and the input to Long term predictor(LTP) is the ...


FS-1016 CELP

Started by Ray Mc Carthy in Speech Coding15 years ago 4 replies

Hi All, I am working with the FS-1016 4.8kb/s CELP coder but I cant understand why the LSP's are interpolated for every...

Hi All, I am working with the FS-1016 4.8kb/s CELP coder but I cant understand why the LSP's are interpolated for every subframe.Can someone tell me is there a specific advantage for doing this? Regards, Ray. -------------------Legal Disclaimer--------------


CELP/MELP

Started by anona_ahmed in Speech Coding13 years ago 1 reply

hi all: i have a speech file 8KHZ and 16bit/ sample, 128kbps. what's the convenient CELP algorithm for this bit rate for the best ...

hi all: i have a speech file 8KHZ and 16bit/ sample, 128kbps. what's the convenient CELP algorithm for this bit rate for the best quality. where can i find the souce code or the application and also for the MELP algorithm. Thanks, Ann


About CELP paper

Started by ytjiang2002 in Speech Coding15 years ago 2 replies

Dear all, I have downloaded the source of CELP. But I didn't find the papers to explain the details of this algorithm. So I...

Dear all, I have downloaded the source of CELP. But I didn't find the papers to explain the details of this algorithm. So I want to know where I can find it? Thank you.


snr estimation

Started by haiB...@rediffmail.com in Speech Coding11 years ago

Hi, i need snr comparision of lpc-10 and celp to show that celp is better as compared to lpc.can any one help. Bhargavi

Hi, i need snr comparision of lpc-10 and celp to show that celp is better as compared to lpc.can any one help. Bhargavi


celp 4.8 kbps

Started by aryo tejo handoko in Speech Coding18 years ago

Hi all, I am interested in the knowing the computational complexity of existing celp 4.8 kbps optimized implementations (either...

Hi all, I am interested in the knowing the computational complexity of existing celp 4.8 kbps optimized implementations (either commercial or form research groups), especially if expressed in % of occupation on a dsp 56002 processor. Any information (references to litera


g728

Started by aryo tejo handoko in Speech Coding18 years ago

i am interesting in speech coding, i have a few question about g728 1. in LD CELP the predictor coefficients, the excitation...

i am interesting in speech coding, i have a few question about g728 1. in LD CELP the predictor coefficients, the excitation are updated my question is, what for it must be updated. 2.In LD CELP we use hybrid window,why we use it, why it must separate to non recursive p


SECURE SPEECH COMUNICATION

Started by vija...@gmail.com in Speech Coding10 years ago 1 reply

Hi This is vijaya bhaskar vasha ,i am doing my M.Tech project on secure speech communication on TMS320C6713 DSP microprocessor i.e. first i...

Hi This is vijaya bhaskar vasha ,i am doing my M.Tech project on secure speech communication on TMS320C6713 DSP microprocessor i.e. first i need to compress the speech signal and then encrypt it. compression algorithm i choose is CELP . But the problem is now that i am not getting the exact block diagram of the CELP. So if some has related material to this please send to me ...


Help need on LPC10e and CELP matlab code

Started by francisspeech in Speech Coding14 years ago

Dear all, I was trying to download the LPC10e and CELP matlab code from www.cysip.com (under "useful DSP links"), but somehow the fill...

Dear all, I was trying to download the LPC10e and CELP matlab code from www.cysip.com (under "useful DSP links"), but somehow the fill form doesn't work for me. I am wondering if any of you have a copy of those codes available, or have any other resources, please help me out. Thanks very much! Best, Frank


G.721vsG.729

Started by Prateek Shrivastava in Speech Coding16 years ago 1 reply

Hi guys, I am doing a project, comparing ADPCM & CELP. For this i have chosen G.721 for ADPCM & G.729 standard for CELP. In...

Hi guys, I am doing a project, comparing ADPCM & CELP. For this i have chosen G.721 for ADPCM & G.729 standard for CELP. In these, 1)What are the parameters that can be compared in these 2? 2)How can the Mean squared error be found out? 3)Are the MOS scores standa


pitch predictor in celp

Started by tunkeat in Speech Coding14 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


[Fwd: Re: Urgent Help Needed on CELP]

Started by Jeff Brower in Speech Coding15 years ago

Dai, B. James- Add... MELP --> Mixed Excitation Linear Prediction -Jeff -------- Original Message -------- ...

Dai, B. James- Add... MELP --> Mixed Excitation Linear Prediction -Jeff -------- Original Message -------- Subject: Re: [speechcoding] Urgent Help Needed on CELP Date: Tue, 11 May 2004 19:07:08 +0800 (CST) From: dai Guangfa <


Technical Information Bulletin for the FS 1016 CELP Coder

Started by Ray McCarthy in Speech Coding15 years ago

Hi All, Does anyone have a copy of the Technical Information Bulletin for the FS 1016 CELP Coder? If so, could you please forward...

Hi All, Does anyone have a copy of the Technical Information Bulletin for the FS 1016 CELP Coder? If so, could you please forward it onto me. Regards, Ray. -------------------Legal Disclaimer--------------------------------------- The above electronic


Split matrix and split vector quantization in CELP

Started by mata mata in Speech Coding16 years ago

Dear all, I have builded matlab functions over split matrix (SMQ) and split vector quantization (SVQ) in CELP but I am not so...

Dear all, I have builded matlab functions over split matrix (SMQ) and split vector quantization (SVQ) in CELP but I am not so sure about the results.... would you examine my works...please... my works is in the attachment thx alot, arida


Help on matlab source code for LPC10, LPC10e, CELP, etc !

Started by francisspeech in Speech Coding14 years ago

Dear all, I need the matlab source code for low bit rate coders such as LPC10, LPC10e, CELP, and etc. Does anybody have the code...

Dear all, I need the matlab source code for low bit rate coders such as LPC10, LPC10e, CELP, and etc. Does anybody have the code available or can give me some help? Thanks very much! Best regards, Frank