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Discussion Groups

Discussion Groups | Speech Coding

Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)

Search Results for "dtmf"

  

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DTMF in G.729   [4 Articles]

Bob Tausworthe - Feb 16 2000
I am reading a spec that states that G.729 is capable of conveying DTMF. Is this correct? I would have thought that G.711 would be required to accurately code DTMF.... DTMF in G.729

DTMF Decoder

shahram heidari - Mar 12 2002
Dear Friends I am working to simulation and implementation of multichannel dtmf encoder/decoder on ADSPs. I have found many documents and codes, which among th... DTMF Decoder

ANSI specs for DTMF detector

manoj garg - Jun 27 2002
Dear sir, I am searching for the ANSI specifications for the DTMF detector. Could you please tell me where i can get them. Are thes specs different from ITU-... ANSI specs for DTMF detector

DTMF detection on a GSM AMR bitstream   [3 Articles]

e_voice61 - Jun 29 2003
Hi all, Do anyone know of a way to detect DTMF on a GSM AMR bitstream without fully decoding it? I will be happy to know if you can do it on ITU-T voice codecs... DTMF detection on a GSM AMR bitstream

DTMF Detection   [4 Articles]

Shehryar Amir - Feb 16 2002
Dear All, I am new to this group. I want to implement DTMF Detection algorithm in C/C++. I have read some material on web and have chosen to start with NonU... DTMF Detection

Second Harmincs in speech signal   [2 Articles]

manoj garg - Jul 23 2002
Hello friends, I wanted to know that what is the ratio of second harmonic energy to the fundamental frequency energy in the speech signal. Actually i am implem... Second Harmincs in speech signal

DTMF Detction

Shehryar Amir - Feb 18 2002
Hi Thanx for your replies. I have gone through a good Article found on web. It says that no single value of "N" can meet the ITU-T specs and also gave reaso... DTMF Detction

G.711 and G.729a tone detection

Nalin K Pithwa - Oct 23 2002
would G.711u law and G.729a tone detection require any special test equipment just as DTMF tone detection ( like the Bellcore and MITEL tests) ? Regards, NP ... G.711 and G.729a tone detection

VAD/CNG module for GIPS ILBC   [2 Articles]

navithak - Oct 8 2007
Hi, I have implemented Gips ILBC codec on adsp 2185..However I am unable to find any information on the vad/dtx module..Is that royalty free as well?? Where can I obtain it?A... VAD/CNG module for GIPS ILBC

Re: melp synthesis silence output   [2 Articles]

steh...@hotmail.com - Jul 13 2007
Thanks for your reply. The problem that I am facing is that after processing some corrupted frames MELP sysnthesis starts giving complete silence at the output. The thing that puz... Re: melp synthesis silence output

Voice Codecs Algorithms for Pentiums

Mayank Kumar - Mar 13 2003
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 G... Voice Codecs Algorithms for Pentiums