This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

am5728 音频麦克风如何测试

Other Parts Discussed in Thread: BEAGLEBOARD-X15, TLV320AIC3104

各位大神:

用x15开发板测试音频现在遇到两个问题:

1、麦克风怎么测试?

2、耳机怎么没有左右声道的区分?

  • software-dl.ti.com/.../Foundational_Components_Kernel_Drivers.html


    BeagleBoard-X15 and AM572x-GP-EVM

    The board uses tlv320aic3104 codec connected through McASP3 [AXR0 for playback, AXR1 for Capture] for audio. The board features two 3.5mm jack for Line Out and Line In.
    Kernel config

    Device Drivers --->
    Sound card support --->
    Advanced Linux Sound Architecture --->
    ALSA for SoC audio support --->
    <*> SoC Audio for the Texas Instruments OMAP chips
    <*> SoC Audio for Texas Instruments chips using eDMA
    <*> Multichannel Audio Serial Port (McASP) support
    CODEC drivers --->
    <*> Texas Instruments TLV320AIC3x CODECs
    <*> ASoC Simple sound card support
    User space

    The hardware defaults are correct for audio playback, the routing is OK and the volume is ‘adequate’ but in case the volume is not correct:

    amixer -c BeagleBoardX15 sset PCM 90 # Master Playback volume
    Playback (line out):

    amixer -c BeagleBoardX15 sset 'Left Line Mixer DACL1' on # Line out Left enable
    amixer -c BeagleBoardX15 sset 'Right Line Mixer DACR1' on # Line out Right enable
    amixer -c BeagleBoardX15 sset 'Line DAC' 90 # Adjust Line out volume
    Record (line in):

    amixer -c BeagleBoardX15 sset 'Left PGA Mixer Mic2L' on # Line in Left enable (MIC2/LINE2)
    amixer -c BeagleBoardX15 sset 'Right PGA Mixer Mic2R' on # Line in Right enable (MIC2/LINE2)
    amixer -c BeagleBoardX15 sset 'PGA' 40 # Adjust Capture volume
  • 您好,根据这样测试,耳机有声音,麦克风没有声音,请问为什么?