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Discussion Groups

Discussion Groups | TMS320C6x | Reading right and left channel stereo inputs with C6711DSK and PCM3003 codec.

Technical discussions about the TI C6000 DSPs (including the c62x, c64x and c67x DSPs).

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Reading right and left channel stereo inputs with C6711DSK and PCM3003 codec. - corizu - Feb 1 14:55:00 2006

Hello all,

I'm new to DSP and this is my first post. Im trying to carry out noise 
cancellation using the C6711DSK and the PCM. My noise and desired 
signals are on two seperate channels. The McBSP1 is set up to read in 
32-bit data (declared as data type int)which corresponds to the right 
and left channels. They are declared as 16-bit arrays(declared as data 
type short)but only the first element of the array is read i.e channel
[0], the second element is always empty. I have used a stereo
(16-bit left and 16-bit right channel)to mono(32-bit)connector (for the 
PCM codec input jack)as detailed in the Chassaing textbook. I'm 
implementing the LMS algorithm by the way.

Can anyone help me? It would be much appreciated.

Cyn.

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Re: Reading right and left channel stereo inputs with C6711DSK and PCM3003 codec. - Shlomo K. - Feb 3 17:31:00 2006

I have just completed a similar project. Use this code to read (and write) a 32bit wide word to mcbsp1.

Shlomo.

corizu <c...@yahoo.com> wrote:

Hello all,

I'm new to DSP and this is my first post. Im trying to carry out noise
cancellation using the C6711DSK and the PCM. My noise and desired
signals are on two seperate channels. The McBSP1 is set up to read in
32-bit data (declared as data type int)which corresponds to the right
and left channels. They are declared as 16-bit arrays(declared as data
type short)but only the first element of the array is read i.e channel
[0], the second element is always empty. I have used a stereo
(16-bit left and 16-bit right channel)to mono(32-bit)connector (for the
PCM codec input jack)as detailed in the Chassaing textbook. I'm
implementing the LMS algorithm by the way.

Can anyone help me? It would be much appreciated.

Cyn.

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