AMR- WB & AMR- NB

Started by rajanikanth December 15, 2005
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.







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