Hello! I'm trying to use UDA1380 on LPC3131 board, for audio capture. The problem is that this device works strange. First of all, I need to do some magic, to make it working. I.e. if I will start recording first time with 11025 rate, arecord records only silence. But if I record one file with 22050 rate, and next with 11025 it works. The 8000, 16000 and 32000 sample rates are not working at all (but this is less important for now). If I will start: arecord -d 10 -f S16_LE -c 1 -r 22050 | aplay I can't hear anything until I will open alsamixer and change "Digital Mixer Signal Control" from "PCM only" to something else, and back to "PCM only". The capture is not working, until AGC will be enabled, but then if there is any silence on input, I can hear growing noise. I will be very happy, if someone will explain how to configure mixer/driver, so it will allow me to record clear sound on this chip. Below is amixer output: ==================================================================== Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right Limits: Playback 0 - 252 Mono: Front Left: Playback 180 [71%] [on] Front Right: Playback 180 [71%] [on] Simple mixer control 'Bass',0 Capabilities: volume Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: 0 - 15 Front Left: 0 [0%] Front Right: 0 [0%] Simple mixer control 'Treble',0 Capabilities: volume Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: 0 - 3 Front Left: 0 [0%] Front Right: 0 [0%] Simple mixer control 'PCM',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 228 Mono: Playback 0 [0%] [on] Simple mixer control 'PCM Playback De-emphasis',0 Capabilities: enum Items: 'None' '32kHz' '44.1kHz' '48kHz' '96kHz' Item0: 'None' Simple mixer control 'Line',0 Capabilities: cvolume Capture channels: Front Left - Front Right Limits: Capture 0 - 8 Front Left: Capture 4 [50%] Front Right: Capture 4 [50%] Simple mixer control 'Mic',0 Capabilities: cvolume cvolume-joined Capture channels: Mono Limits: Capture 0 - 15 Mono: Capture 0 [0%] Simple mixer control 'Capture Mux',0 Capabilities: enum Items: 'ADC' 'Digital Mixer' Item0: 'ADC' Simple mixer control 'ADC',0 Capabilities: pvolume pvolume-joined cvolume pswitch pswitch-joined cswitch cswitch-joined Playback channels: Mono Capture channels: Front Left - Front Right Limits: Playback 0 - 228 Capture 0 - 176 Mono: Playback 223 [98%] [on] Front Left: Capture 0 [0%] [off] Front Right: Capture 0 [0%] [off] Simple mixer control 'ADC Playback De-emphasis',0 Capabilities: enum Items: 'None' '32kHz' '44.1kHz' '48kHz' '96kHz' Item0: 'None' Simple mixer control 'ADC Polarity inverting',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'AGC',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'AGC Target level',0 Capabilities: volume volume-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 3 Mono: 0 [0%] Simple mixer control 'AGC Timing',0 Capabilities: volume volume-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 7 Mono: 7 [100%] Simple mixer control 'Analog Mixer',0 Capabilities: volume Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: 0 - 44 Front Left: 0 [0%] Front Right: 0 [0%] Simple mixer control 'DAC Polarity inverting',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'DC Filter Bypass',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'DC Filter Enable',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'Digital Mixer Signal Control',0 Capabilities: enum Items: 'off' 'PCM only' 'before sound processing' 'after sound processing' Item0: 'after sound processing' Simple mixer control 'Input Mux',0 Capabilities: enum Items: 'Line' 'Mic + Line R' 'Line L' 'Mic' Item0: 'Line' Simple mixer control 'Noise Shaper',0 Capabilities: enum Items: '3rd-order' '5th-order' Item0: '3rd-order' Simple mixer control 'Output Mux',0 Capabilities: enum Items: 'DAC' 'Analog Mixer' Item0: 'DAC' Simple mixer control 'Oversampling Input',0 Capabilities: enum Items: 'single-speed' 'double-speed (no mixing)' 'quad-speed (no mixing)' Item0: 'single-speed' Simple mixer control 'Silence',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'Silence Detector',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'Silence Detector Setting',0 Capabilities: enum Items: '3200' '4800' '9600' '19200' Item0: '3200' Simple mixer control 'Sound Processing Filter',0 Capabilities: enum Items: 'Flat' 'Minimum1' 'Minimum2' 'Maximum' Item0: 'Flat' Best regards Jarek ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
