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hi all, i am new to this group. first of all let me introduce myself to u all. my name is Praveen. i am post graduate student in Indian Institute of Information Technology & Management - Kerala. We have a course in dsp. i was just browsing thru the net and found a lot of things done on speech codec and audio codec. i am really interested on those areas. i want to begin with speech codec. one of my friend is working in a dsp company and he told that most speech codecs use AMR speech codec and there are of two types Narrow band and Wide band. I want to start with Narrow band. He also tolds that if u want to know how they have implemented it u can get it from 3gpp site and implemented in 32 bit and 16 bit processors. i searched in their site but didn't find one. i got the documents which talks in relation with code. i am not able to understand what is happening in that algorithm. can anybody out there send me a 3gpp code which implements AMR Narrow Band Speech Codec which is implemented for 32 bit processor as most of the dsp are 32 bit. thanks in advance...... regards Praveen

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