global_configuration { attached_output_devices AUDIO_DEVICE_OUT_EARPIECE|AUDIO_DEVICE_OUT_SPEAKER default_output_device AUDIO_DEVICE_OUT_SPEAKER attached_input_devices AUDIO_DEVICE_IN_BUILTIN_MIC } audio_hw_modules { primary { outputs { primary { sampling_rates 44100 channel_masks AUDIO_CHANNEL_OUT_STEREO formats AUDIO_FORMAT_PCM_16_BIT devices AUDIO_DEVICE_OUT_EARPIECE|AUDIO_DEVICE_OUT_SPEAKER|AUDIO_DEVICE_OUT_WIRED_HEADSET|AUDIO_DEVICE_OUT_WIRED_HEADPHONE flags AUDIO_OUTPUT_FLAG_PRIMARY } } inputs { primary { sampling_rates 8000|11025|16000|22050|24000|32000|44100|48000 channel_masks AUDIO_CHANNEL_IN_MONO|AUDIO_CHANNEL_IN_STEREO formats AUDIO_FORMAT_PCM_16_BIT devices AUDIO_DEVICE_IN_BUILTIN_MIC|AUDIO_DEVICE_IN_WIRED_HEADSET } } } }