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a question about c6711 McBsp A-law compression

Started by Guo yang ●August 3, 2003
Hello.I have a question about c6711 McBsp A-law
compression.

I want to know the compression algorithm of
Tms320c6711 A-law. Does the algorithm in Appendix A of
the document spra634.pdf adopted?After encoding, what
kind of processing did the hardware perform?
Bit-reversed or even-bit reversed or odd
bit-reversed,or other way?
I ask the question because when I use DSKC6711, the
code I get after A-law compression is not consistent
with the document.
Can any one help me?
Thank you. Guo

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Reply by Mike Dunn ●August 5, 20032003-08-05
Guo,
 
I don't have your answer but here are a couple of clues that might help.
 
1. I noticed that TI just released
TMS320C6000 DSP Multichannel Buffered Serial Port (McBSP)Reference Guide SPRU580
 
2. The McBSP supposed uses CCITT G.711 compression/decompression [I am not familiar with it]

 

mikedunn



Guo yang <y...@yahoo.com.cn> wrote:
Hello.I have a question about c6711 McBsp A-law
compression.

I want to know the compression algorithm of
Tms320c6711 A-law. Does the algorithm in Appendix A of
the document spra634.pdf adopted?After encoding, what
kind of processing did the hardware perform?
Bit-reversed or even-bit reversed or odd
bit-reversed,or other way?
I ask the question because when I use DSKC6711, the
code I get after A-law compression is not consistent
with the document.
Can any one help me?
Thank you.Guo

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