Talk:G.711

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I don't understand that compressed s0000000wxyza... uncompressed s000wxyz part at all. Maybe someone can explain it? Thanks, --Abdull 18:23, 4 Apr 2005 (UTC)

I have added a couple of examples which I hope make it clearer. Alf Boggis (talk) 08:46, 24 October 2005 (UTC)


On 23rd October 2005, user 212.56.108.219 added the following to the article:

From memory ( The detail could well be wrong ) A law compresses Linear value 4096 to 127 XOR 0x55 Linear value 0 to 0 XOR 0x55 Linear value -4096 to -128 XOR 0x55 u - law compresses Linear value 8197 to 0x01 Linear value 0 to 0x7F Linear value -0 to 0x80 Linear value -8197 to 0xFF The 'zero' for A - law is 0 XOR 0x55. The 'zero' for u - law is + 127

I think it would be good to include this, but I don't have time to check at the moment so I have put it here for the record. Alf Boggis (talk) 08:39, 24 October 2005 (UTC)

[edit] Silent A-law

Hi,

I have been looking into the G.711/G.726 recommendations, and it seem to me that a silent soundstream (PCM data of value zero) should result in the A-law encoded codewords of 0xD5, not 0x55.

Regards, Jacob

The text tell there is a 0.125ms algorithmic delay.

 This is not true : if the decoding is done in hardware the Bytes are decoded on the fly

There is no algorithmic delay, Laurent.

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