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eZDSP Stick demo code AIC3204

DjohnWoz
Prodigy 70 points

Other Parts Discussed in Thread: TMS320VC5505, TLV320AIC3204

Hi All,

I am new to TMS320VC5505. I have bought eZDSP stick and installed the software which came with it.

I have managed to build all demos and examples without problems.

Currently I am going through examples and try to understand the code.

I have question regarding example project name AIC3204. AIC3204 test program does two things:

- outputs tone to headphones and this work fine

- the second test is suppose to read microphone signal and send it to headphones and this doesn’t work for me. When I run this test and talk to microphone I cannot hear anything in the headphones.

Any help and suggestions on this issue would be much appreciated

Thanks,

Regards,

DjohnWoz

 

 

 

  • 0
    Intellectual 395 points

    Most likely the output level of your microphone isn't high enough. You could try the following things:

    1.: Shout really load into your mic :-)

    2.: Use an external amplifier or, alternatively, use the internal one. You would need to change a register, but I'm not sure which one. There was one thread about it: http://e2e.ti.com/support/dsp/tms320c5000_power-efficient_dsps/f/110/p/11124/43289.aspx#43289

    3.: Simply use a line out signal of, say, an mp3 player. That's what I do.

    Let me know if that helped or not!

  • 0 in reply to Michael Rietz
    Prodigy 70 points

    Yes that was the problem.

    I fed signal with amplitude 1V and I can hear the output.

    I have to learn more about TLV320AIC3204 probably I can amplify my microphone signal there.

    Thanks