Re: query regarding interfacing of ADC/DAC for speech i/p and o/p

Hi Dear,
So did u find answer to your query? I am really a new comer in DSP domain and unknown to working C5510 in detail. I want to read audio input from mic and store it.Then i want to play it back to headphone.

This is my main():

void main()
{

DSK5510_AIC23_CodecHandle hCodec;
Int16 i,j,k,left,right;
Int16 input1[8000];
Int16 input2[8000];
/* Initialize the board support library, must be called first */
DSK5510_init();

/* Start the codec */
hCodec = DSK5510_AIC23_openCodec(0, &config);

/* Generate a 1KHz sine wave for 5 seconds */
for (i = 0; i < 10; i++)
{
for (j = 0; j < 8000; j++)
{
/* Read a sample from left channel */
while (!DSK5510_AIC23_read16(hCodec, &left));
input1[j]=left;

/* Read a sample from right channel */
while (!DSK5510_AIC23_read16(hCodec, &right));
input2[j]= right;
}

}
for (i = 0; i < 10; i++)
{
for(k=0; k<8000;k++)
{
while(!DSK5510_AIC23_write16(hCodec, input1[k]));
/* Send a sample to the right channel */
while(!DSK5510_AIC23_write16(hCodec, input2[k]));
}
}
/* Close the codec */
DSK5510_AIC23_closeCodec(hCodec);
}

But it is not giving any output. What to do?
kindly help me where i am going wrong. I will be waiting for ur reply

regards,
Umer
>
>
>
> hello everybody
>i m an student doing project "Real time
>implementation of G.723.1 on TMS320VC5510"
>right now i am ready with optimised code which is
>running in CCS simulator by taking i/p from file and
>putting o/p in2 file
>but now my next step is to run it in to DSK board for
>that i have to take i/p from mike and taken o/p from
>headphone
>and for that i have to interface adc/dac of that
>particular board which uses AIC23 as a codec.
>i tried 2 get some idea from audio project available
>in TI but not getting the flow as i don't aquant with
>DSP-BIOS also
>please any1 sugest me how to proceed or else can
>anybody send me programme to interface codec withought
>using DSP-BIOS
>
>sorry for long mail
>waiting for early reply as i have to submit my project
>bbye
>Alpana
>M.E.(GCOEP)
>Pune
>
> Start a New Thread

Umer-

> So did u find answer to your query? I am really a new comer in
> DSP domain and unknown to working C5510 in detail. I want to read
> audio input from mic and store it.Then i want to play it back to
> headphone.
>
> This is my main():

First I would try something very simple to verify your DSK board, tool
set-up, build options, memory map, and other basic factors are Ok:

void main() {

DSK5510_AIC23_CodecHandle hCodec;
Int16 left,right;

/* Initialize the board support library, must be called first */
DSK5510_init();

/* Start the codec */
hCodec = DSK5510_AIC23_openCodec(0, &config);

/* Audio loopback */
while (TRUE) {

while (!DSK5510_AIC23_read16(hCodec, &left));
while (!DSK5510_AIC23_read16(hCodec, &right));

while(!DSK5510_AIC23_write16(hCodec, left));
while(!DSK5510_AIC23_write16(hCodec, right));
}

DSK5510_AIC23_closeCodec(hCodec);
}

This should enable audio loopback -- you should hear whatever is on the
inputs. Does that much work? If so, then you can go step-by-step to add
the functionality you need, testing each step carefully.

Also, here is a nice page for generating a sine wave with DSK 5510:

http://www.tkt.cs.tut.fi/kurssit/3516/exercises/fall05/test_audioIO.c

-Jeff
> void main()
> {
>
> DSK5510_AIC23_CodecHandle hCodec;
> Int16 i,j,k,left,right;
> Int16 input1[8000];
> Int16 input2[8000];
> /* Initialize the board support library, must be called first */
> DSK5510_init();
>
> /* Start the codec */
> hCodec = DSK5510_AIC23_openCodec(0, &config);
>
> /* Generate a 1KHz sine wave for 5 seconds */
> for (i = 0; i < 10; i++)
> {
> for (j = 0; j < 8000; j++)
> {
> /* Read a sample from left channel */
> while (!DSK5510_AIC23_read16(hCodec, &left));
> input1[j]=left;
>
> /* Read a sample from right channel */
> while (!DSK5510_AIC23_read16(hCodec, &right));
> input2[j]= right;
> }
>
> }
> for (i = 0; i < 10; i++)
> {
> for(k=0; k<8000;k++)
> {
> while(!DSK5510_AIC23_write16(hCodec, input1[k]));
> /* Send a sample to the right channel */
> while(!DSK5510_AIC23_write16(hCodec, input2[k]));
> }
> }
> /* Close the codec */
> DSK5510_AIC23_closeCodec(hCodec);
> }
>
> But it is not giving any output. What to do?
> kindly help me where i am going wrong. I will be waiting for ur reply
>
> regards,
> Umer
>>
>> hello everybody
>>i m an student doing project "Real time
>>implementation of G.723.1 on TMS320VC5510"
>>right now i am ready with optimised code which is
>>running in CCS simulator by taking i/p from file and
>>putting o/p in2 file
>>but now my next step is to run it in to DSK board for
>>that i have to take i/p from mike and taken o/p from
>>headphone
>>and for that i have to interface adc/dac of that
>>particular board which uses AIC23 as a codec.
>>i tried 2 get some idea from audio project available
>>in TI but not getting the flow as i don't aquant with
>>DSP-BIOS also
>>please any1 sugest me how to proceed or else can
>>anybody send me programme to interface codec withought
>>using DSP-BIOS
>>
>>sorry for long mail
>>waiting for early reply as i have to submit my project
>>bbye
>>Alpana
>>M.E.(GCOEP)
>>Pune
>>
> Start a New Thread