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audio problem

fei li1
Intellectual 360 points

Hello!

Platform: DM8168 dvrrdk3.0; questions as follows:
1. I connect a camera and a microphone separately  to video 1 pin and audio 1 pin,I set  all audio  to enable in gui, but real-time and recording is not voice after running GUI program, run MCFW can record audio files and play is voice. what should I do?

2. what is WRITER_audioRecvFxn and WRITER_audiPlayFxn threads do?

3.t I don't  connect   audio input device to board, but snd_pcm_readi () returns  value is not zero, why?

  • 0
    TI__Guru**** 170625 points

    Answered in the threads below:

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/258465.aspx

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/257705.aspx

    Regards,

    Pavel

  • 0
    Guru 10655 points

    2. what is WRITER_audioRecvFxn and WRITER_audiPlayFxn threads do?

    - I didn't find that. Could you point out where's it?

    3.t I don't  connect   audio input device to board, but snd_pcm_readi () returns  value is not zero, why?

    - it may be noise. To clarify the generated noise, pls use "active speaker" and increase the volume to the largest to hear the sound.

       if you guarantee the noise, then you could know how to eliminate that if you want.