AMR - UMTS coding | Speech Coding

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

Hello, I wanted to answer one of you who have written me in private, but the mail address was wrong, so I decided to write to all of you. I was explained that the ETSI compression code for AMR was writing a 16 bits word to code one bit, but that a flag could be enable to reduce this stuff, and use a RTP output instead. That was true, but my misreading of the readme.doc (!!) have not brought this fact to my awareness. A simple [#define MMS_IO 1] enable a different processing, and creates really reduced files. Amazing ! However, I still have one question. This question probably comes from a lack of knowledge of this implementation, but so far I have not found the answer. This AMR is called "adaptative". With the ETSI code, I find strange to provide the program with the name of the mode. (One option is to give only one mode, another is to create a file containing one mode per line, with one line per sample.) I wanted to know what I have to do for the program to chose the right mode by itself ? Thanks ! Ben PS ; for those who wanted to know more about this, I can tell that it works ! Next step : real time with microphone input. Sounds serious ! ;-) _____________________________________________________________________ Un mot doux � envoyer? Une sortie cin� � organiser? Faites le en temps r�el avec MSN Messenger! C'est gratuit! http://ifrance.com/_reloc/m

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Discussion Groups | Speech Coding | AMR - UMTS coding

AMR - UMTS coding - Ben - Jul 9 13:37:00 2004