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audio echo programming

sachin kalkur
Prodigy 100 points
Other Parts Discussed in Thread: CCSTUDIO

Hi..there 

i hav built the "audio echo" code in ccstudio v3.3 without any errors also run the code on DM642 board ..without any errors.. but finally if i talk in mic ther is observatory [no] sound on headphones.. and aic23 codec is properly intialized.

So what may be the problem....?

  • 0
    Prodigy 100 points

    sorry.. there is no sound !!!!  just correction to above post ... 

  • 0 in reply to sachin kalkur
    TI__Guru* 84110 points

    Sachin,

    Since CCS 3.3 is not officially supported anymore, it may be harder to find as many helpful comments as there would be with CCSv5. If the EVMDM642 has an on-board emulator, then CCSv5 will be able to work with a free license for you.

    What do you mean when you say the AIC23 is initialized properly? Did you change the initialization?

    What I usually do to start debugging a problem like this is to force a sinewave into the output buffer and listen for a tone coming out. This will help you determine if the problem is on the input side or the output side.

    Are you connecting to the right input and output? Many of our EVMs have separate LineIn and Mic inputs that must be selected specifically. The same could be true on the outputs. Check the board and the Tech Ref document for the board to see what its features are.

    Regards,
    RandyP

  • 0 in reply to RandyP
    Prodigy 100 points

    Sir..

    i found DDK 1.2 on one of ur sites...

    also there was intialization missing in DSP/BIOS configuration... i figured it out in ddk doc sheet.. 

    so today my problem was solved thanks for reply :)

    AIC23 codec intialize: i mean the ports for (mic/line)  was specifically set ..

    also i tried "audio echo" programming which worked nicely ..

    thanks for support 

    Regards

    Sachin