TLV320AIC3104: alsa

Part Number: TLV320AIC3104

Hello, When I input the sine wave of 100mVrms signal from LINE1LP for audio recording, when I execute the command arecord -d 10 -f cd -r 48000 -t wav 001.wav after recording the audio, there is a large clutter in the audio played back. At the same time, when connected to MIC2R, the waveform output from the bypass is very beautiful, but I execute the same command to record audio after playing the audio I just recorded, the result even can not see the waveform, why?

Simple mixer control 'PCM',0

  Capabilities: pvolume

  Playback channels: Front Left - Front Right

  Limits: Playback 0 - 127

  Mono:

  Front Left: Playback 127 [100%] [0.00dB]

  Front Right: Playback 127 [100%] [0.00dB]

Simple mixer control 'Line',0

  Capabilities: pswitch

  Playback channels: Front Left - Front Right

  Mono:

  Front Left: Playback [on]

  Front Right: Playback [on]

Simple mixer control 'Line DAC',0

  Capabilities: pvolume

  Playback channels: Front Left - Front Right

  Limits: Playback 0 - 118

  Mono:

  Front Left: Playback 118 [100%] [0.00dB]

  Front Right: Playback 118 [100%] [0.00dB]

Simple mixer control 'Line PGA Bypass',0

  Capabilities: volume

  Playback channels: Front Left - Front Right

  Capture channels: Front Left - Front Right

  Limits: 0 - 118

  Front Left: 118 [100%] [0.00dB]

  Front Right: 118 [100%] [0.00dB]

Simple mixer control 'ADC HPF Cut-off',0

  Capabilities: enum

  Items: 'Disabled' '0.0045xFs' '0.0125xFs' '0.025xFs'

  Item0: 'Disabled'

  Item1: 'Disabled'

Simple mixer control 'AGC',0

  Capabilities: pswitch

  Playback channels: Front Left - Front Right

  Mono:

  Front Left: Playback [off]

  Front Right: Playback [off]

Simple mixer control 'De-emphasis',0

  Capabilities: pswitch

  Playback channels: Front Left - Front Right

  Mono:

  Front Left: Playback [off]

  Front Right: Playback [off]

Simple mixer control 'HP',0

  Capabilities: pswitch

  Playback channels: Front Left - Front Right

  Mono:

  Front Left: Playback [on]

  Front Right: Playback [on]

Simple mixer control 'HP DAC',0

  Capabilities: pvolume

  Playback channels: Front Left - Front Right

  Limits: Playback 0 - 118

  Mono:

  Front Left: Playback 118 [100%] [0.00dB]

  Front Right: Playback 118 [100%] [0.00dB]

Simple mixer control 'HP PGA Bypass',0

  Capabilities: volume

  Playback channels: Front Left - Front Right

  Capture channels: Front Left - Front Right

  Limits: 0 - 118

  Front Left: 118 [100%] [0.00dB]

  Front Right: 118 [100%] [0.00dB]

Simple mixer control 'HPCOM',0

  Capabilities: pswitch

  Playback channels: Front Left - Front Right

  Mono:

  Front Left: Playback [on]

  Front Right: Playback [on]

Simple mixer control 'HPCOM DAC',0

  Capabilities: pvolume

  Playback channels: Front Left - Front Right

  Limits: Playback 0 - 118

  Mono:

  Front Left: Playback 118 [100%] [0.00dB]

  Front Right: Playback 118 [100%] [0.00dB]

Simple mixer control 'HPCOM PGA Bypass',0

  Capabilities: volume

  Playback channels: Front Left - Front Right

  Capture channels: Front Left - Front Right

  Limits: 0 - 118

  Front Left: 118 [100%] [0.00dB]

  Front Right: 118 [100%] [0.00dB]

Simple mixer control 'Left AGC Attack time',0

  Capabilities: enum

  Items: '8ms' '11ms' '16ms' '20ms'

  Item0: '8ms'

Simple mixer control 'Left AGC Decay time',0

  Capabilities: enum

  Items: '100ms' '200ms' '400ms' '500ms'

  Item0: '100ms'

Simple mixer control 'Left AGC Target level',0

  Capabilities: enum

  Items: '-5.5dB' '-8dB' '-10dB' '-12dB' '-14dB' '-17dB' '-20dB' '-24dB'

  Item0: '-5.5dB'

Simple mixer control 'Left DAC Mux',0

  Capabilities: enum

  Items: 'DAC_L1' 'DAC_L3' 'DAC_L2'

  Item0: 'DAC_L1'

Simple mixer control 'Left HP Mixer DACL1',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [on]

Simple mixer control 'Left HP Mixer DACR1',0

  Capabilities: pvolume pvolume-joined pswitch pswitch-joined

  Playback channels: Mono

  Limits: Playback 0 - 118

  Mono: Playback 118 [100%] [0.00dB] [off]

Simple mixer control 'Left HP Mixer PGAL Bypass',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Left HP Mixer PGAR Bypass',0

  Capabilities: volume volume-joined pswitch pswitch-joined

  Playback channels: Mono

  Capture channels: Mono

  Limits: 0 - 118

  Mono: 118 [100%] [0.00dB] Playback [on]

Simple mixer control 'Left HPCOM Mixer DACL1',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [on]

Simple mixer control 'Left HPCOM Mixer DACR1',0

  Capabilities: pvolume pvolume-joined pswitch pswitch-joined

  Playback channels: Mono

  Limits: Playback 0 - 118

  Mono: Playback 118 [100%] [0.00dB] [off]

Simple mixer control 'Left HPCOM Mixer PGAL Bypass',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Left HPCOM Mixer PGAR Bypass',0

  Capabilities: volume volume-joined pswitch pswitch-joined

  Playback channels: Mono

  Capture channels: Mono

  Limits: 0 - 118

  Mono: 118 [100%] [0.00dB] Playback [off]

Simple mixer control 'Left HPCOM Mux',0

  Capabilities: enum

  Items: 'differential of HPLOUT' 'constant VCM' 'single-ended'

  Item0: 'single-ended'

Simple mixer control 'Left Line Mixer DACL1',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Left Line Mixer DACR1',0

  Capabilities: pvolume pvolume-joined pswitch pswitch-joined

  Playback channels: Mono

  Limits: Playback 0 - 118

  Mono: Playback 118 [100%] [0.00dB] [on]

Simple mixer control 'Left Line Mixer PGAL Bypass',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Left Line Mixer PGAR Bypass',0

  Capabilities: volume volume-joined pswitch pswitch-joined

  Playback channels: Mono

  Capture channels: Mono

  Limits: 0 - 118

  Mono: 118 [100%] [0.00dB] Playback [on]

Simple mixer control 'Left Line1L Mux',0

  Capabilities: enum

  Items: 'single-ended' 'differential'

  Item0: 'single-ended'

Simple mixer control 'Left Line1R Mux',0

  Capabilities: enum

  Items: 'single-ended' 'differential'

  Item0: 'single-ended'

Simple mixer control 'Left PGA Mixer Line1L',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [on]

Simple mixer control 'Left PGA Mixer Line1R',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Left PGA Mixer Mic2L',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [on]

Simple mixer control 'Left PGA Mixer Mic2R',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Output Driver Power-On time',0

  Capabilities: enum

  Items: '0us' '10us' '100us' '1ms' '10ms' '50ms' '100ms' '200ms' '400ms' '800ms' '2s' '4s'

  Item0: '0us'

Simple mixer control 'Output Driver Ramp-up step',0

  Capabilities: enum

  Items: '0ms' '1ms' '2ms' '4ms'

  Item0: '0ms'

Simple mixer control 'PGA',0

  Capabilities: cvolume cswitch

  Capture channels: Front Left - Front Right

  Limits: Capture 0 - 119

  Front Left: Capture 0 [0%] [0.00dB] [on]

  Front Right: Capture 0 [0%] [0.00dB] [on]

Simple mixer control 'Right AGC Attack time',0

  Capabilities: enum

  Items: '8ms' '11ms' '16ms' '20ms'

  Item0: '8ms'

Simple mixer control 'Right AGC Decay time',0

  Capabilities: enum

  Items: '100ms' '200ms' '400ms' '500ms'

  Item0: '100ms'

Simple mixer control 'Right AGC Target level',0

  Capabilities: enum

  Items: '-5.5dB' '-8dB' '-10dB' '-12dB' '-14dB' '-17dB' '-20dB' '-24dB'

  Item0: '-5.5dB'

Simple mixer control 'Right DAC Mux',0

  Capabilities: enum

  Items: 'DAC_R1' 'DAC_R3' 'DAC_R2'

  Item0: 'DAC_R1'

Simple mixer control 'Right HP Mixer DACL1',0

  Capabilities: pvolume pvolume-joined pswitch pswitch-joined

  Playback channels: Mono

  Limits: Playback 0 - 118

  Mono: Playback 118 [100%] [0.00dB] [off]

Simple mixer control 'Right HP Mixer DACR1',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Right HP Mixer PGAL Bypass',0

  Capabilities: volume volume-joined pswitch pswitch-joined

  Playback channels: Mono

  Capture channels: Mono

  Limits: 0 - 118

  Mono: 118 [100%] [0.00dB] Playback [on]

Simple mixer control 'Right HP Mixer PGAR Bypass',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Right HPCOM Mixer DACL1',0

  Capabilities: pvolume pvolume-joined pswitch pswitch-joined

  Playback channels: Mono

  Limits: Playback 0 - 118

  Mono: Playback 118 [100%] [0.00dB] [on]

Simple mixer control 'Right HPCOM Mixer DACR1',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Right HPCOM Mixer PGAL Bypass',0

  Capabilities: volume volume-joined pswitch pswitch-joined

  Playback channels: Mono

  Capture channels: Mono

  Limits: 0 - 118

  Mono: 118 [100%] [0.00dB] Playback [off]

Simple mixer control 'Right HPCOM Mixer PGAR Bypass',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Right HPCOM Mux',0

  Capabilities: enum

  Items: 'differential of HPROUT' 'constant VCM' 'single-ended' 'differential of HPLCOM' 'external feedback'

  Item0: 'single-ended'

Simple mixer control 'Right Line Mixer DACL1',0

  Capabilities: pvolume pvolume-joined pswitch pswitch-joined

  Playback channels: Mono

  Limits: Playback 0 - 118

  Mono: Playback 118 [100%] [0.00dB] [on]

Simple mixer control 'Right Line Mixer DACR1',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Right Line Mixer PGAL Bypass',0

  Capabilities: volume volume-joined pswitch pswitch-joined

  Playback channels: Mono

  Capture channels: Mono

  Limits: 0 - 118

  Mono: 118 [100%] [0.00dB] Playback [off]

Simple mixer control 'Right Line Mixer PGAR Bypass',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Right Line1L Mux',0

  Capabilities: enum

  Items: 'single-ended' 'differential'

  Item0: 'single-ended'

Simple mixer control 'Right Line1R Mux',0

  Capabilities: enum

  Items: 'single-ended' 'differential'

  Item0: 'single-ended'

Simple mixer control 'Right PGA Mixer Line1L',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Right PGA Mixer Line1R',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Right PGA Mixer Mic2L',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [off]

Simple mixer control 'Right PGA Mixer Mic2R',0

  Capabilities: pswitch pswitch-joined

  Playback channels: Mono

  Mono: Playback [on]

I am looking forward to hearing from you.

thank you.