Hi to all, I am doing projects of AMR- WB(ITU G.722.2) & AMR- NB implementation on ARM9E. I have the following doubts, please clarify. 1) What are the standards for AMR- NB? Is 3gpp AMR-NB same as ITU G.723.1 ? 2) AMR- WB and GSM-AMR are same or not ? 2) What is the difference between ARM and TI- processors in the MIPS point of view ? 3) How many MIPS the AMR- WB will take generally? How many MIPS the AMR- NB will take generally? 4) Approximately how many days one guy will take to complete these projects ? Thanks in advance. Best Regards, Rajanikanth.
AMR- WB & AMR- NB
Started by ●December 15, 2005
Reply by ●December 26, 20052005-12-26
hi, 1. G.723.1 and AMR-NB are different codecs. AMR standart is available from 3gpp.org 2. GSM-AMR is just another name for AMR-NB, usually simply AMR. 2.1 NB = narrow band (8kHz sampling rate), WB - wide band (16kHz), thus AMR and AMR-WB are different codecs 3. I think encoder should consume < 50 MIPS, decoder < 8 MIPS (assumes memory works at a core speed) Best Regards, Dmitry