MTK Android Driver :Audio音频参数
音频参数集成(具体参数由硬件提供)
1.ring/key/mic/fmr/speech/sidetone/media/matv增益:
\mediatek\custom\k9\cgen\inc\audio_volume_custom_default.h
2.默认音量等级修改:(INPUT_FIR_COEFF /OUTPUT_FIR_COEFF)
\mediatek\custom\prj\cgen\inc\med_audio_default.h
\mediatek\custom\prj\cgen\inc\sph_coeff_default.h
其中对应:normal/headset/handfree
\mediatek\custom\prj\cgen\inc\audio_custom.h