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Hello evereybody;<BR>
<BR>
I am very confused and i hope that someone could help me.<BR>
In fact i'm using an ADC 12bit to sample voice and then i encode the data using Speex.<BR>
The problem is when i try to decode and replay the voice samples i got much noise. I think that the pb is iabout the conversion from 12bit unsigned to 16bit signed format which is required by speex codec.<BR>
<BR>
i have used the following code:<BR>
<EM>signed_vakue16 = (unsigned_value12<<4)^0x8000;</EM><BR>
<BR>
also i have tryed to convert the 12bit into 8bit and then transformat it into 16bit signed format:<BR>
<EM>signed_vakue16 = ((unsigned_value12>>4)<<8)^0x8000;</EM><BR>
<BR>
could anyone please give me more clarifiations, thanks<BR>
<BR>
best regards to all<BR>
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