Need Info about Speech Codecs

Started by hibh...@gmail.com in Speech Coding14 years ago 1 reply

Hi, I work for a Multimedia startup company. we are luking for speech codecs implemented on ARM9 platform for our end system.Can any one...

Hi, I work for a Multimedia startup company. we are luking for speech codecs implemented on ARM9 platform for our end system.Can any one give some info abt good companies who does Porting of speech codecs. we need ITU G.723.1 or 3gpp AMR-NB and G.726, G.711. Also cud any tell me how much each codec will cost(in $)so that we can choose the one which fits our bud


ADPCM encoder/decoder

Started by vipul paladiya in Speech Coding18 years ago 1 reply

Hi champs, I am working on ADPCM encoder and decoder. I have got the C code of G.726 from the net. This is for all the...

Hi champs, I am working on ADPCM encoder and decoder. I have got the C code of G.726 from the net. This is for all the 16,24,32,40 kbps. I have purchased the standard document and testvectors from the ITU site. Now, I have the C code of encoder/decoder working on PC. I have te


HELP! G.726 ITU Test Vectors Verification errors

Started by aysit in Speech Coding13 years ago

Hi all, There are two main roadblocks. It just seems like the only thing I can verify to be working 100% error-free is the encoder portion of...

Hi all, There are two main roadblocks. It just seems like the only thing I can verify to be working 100% error-free is the encoder portion of the RESET SEQUENCE test vectors. 1) The G726-16kbps decoder keeps failing the verification even though I have tried different implementations. Some errors were only off by 1. 2) The HOMING SEQUENCE test vectors can not be verified because ...


Voice Codecs Algorithms for Pentiums

Started by Mayank Kumar in Speech Coding17 years ago

Hi All, I am involved in a Computer Telephony project and I am looking for Voice Codec algorithms like G.711 (A law and...

Hi All, I am involved in a Computer Telephony project and I am looking for Voice Codec algorithms like G.711 (A law and Ulaw), G.726, G.723.1, G.729a/b, DTMF Generation/Detection, CNG (Comfort Noise Generation), Echo Cancellation, Voice Activity Detection,etc Coded in C


ADPCM ITU C code

Started by Meenakshi Matai in Speech Coding15 years ago

Hello, I am working on implementing the G.726 ADPCM algorithm. In the C code obtained from ITU, there's a function called...

Hello, I am working on implementing the G.726 ADPCM algorithm. In the C code obtained from ITU, there's a function called "update". It is present in the "g72x.c" file. The first few lines of the function look like this: ylint = (short int)state


G726 codec support with .wav files

Started by Aditi Akula in Speech Coding10 years ago

Hi All, I want to play G726 (16 kbps) encoded data with Windows Media Player (WMP). I have modified the normal wave header to allow for the...

Hi All, I want to play G726 (16 kbps) encoded data with Windows Media Player (WMP). I have modified the normal wave header to allow for the G726 code (0x0045). But it does not allow me. It says "One or more codecs required to play the file". I tried downloading "Sharp G.726 codec" and installed it. Still it doesn't work with WMP. Do we have to add any extra portion to the WAVE heade...


itu g.726a test vectors

Started by Armen Baloyan in Speech Coding16 years ago

Hi all, i'm implementing ITU g.726a speech codec. I need some test vectors to check my results. i've found test vectors for g.726...

Hi all, i'm implementing ITU g.726a speech codec. I need some test vectors to check my results. i've found test vectors for g.726 but i can't find no test vectors for g726a. One more qestion: if there is no test vectors for g726a, can i use g726 test vectors by coding input raw


G726 testing

Started by vija...@yahoo.co.in in Speech Coding13 years ago 2 replies

Hi All, I am using reference G.726 code of ITU software tool library. I am now testing the code using VC++. It is said that the reference code...

Hi All, I am using reference G.726 code of ITU software tool library. I am now testing the code using VC++. It is said that the reference code takes A-law or Mu-law coded input and outputs the same, but the code takes 2 bytes of input( short ) and A-law coded should be one byte. I am getting wrong output. can any one help in this regard?? Regards, Vijay


G726 plc

Started by Gowri in Speech Coding18 years ago

Hai If any body any information  or website address related to G.726 packet loss conceal ment .  

Hai If any body any information  or website address related to G.726 packet loss conceal ment .