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hi, i am running ubuntu 10.04, updated to the current proprietary Nvidia graphics driver and unmuted the S/PDIF outputs in alsamixer. finally got sound to go over hdmi to my tv...but, the quality is not so good. I get the same results no matter if i use the delivered alsa drivers ( 1.0.21 i think ), or if i manually compile alsa 1.0.23 the bizarre thing is that when i do: aplay -D plug:hdmi /usr/share/sounds/alsa/Front_Center.wav the quality is PERFECT. no cracking, static, etc... but when I put a DVD in, or listen to a radio station via rhythmbox, or an mp3 in audacious, the quality is not so hot. it is almost listen-able, but not quite. could someone please point me to a configuration I am missing that might help me? or could someone please explain the quality discrepency between the .wav file and other audio file types? do i NEED a ~/.asoundrc file? if so, what should the contents be? I've seen differing opinions on this issue. Really appreciate any help Thanks Andy aplay -l **** List of PLAYBACK Hardware Devices **** card 0: NVidia [HDA NVidia], device 0: ALC1200 Analog [ALC1200 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 1: ALC1200 Digital [ALC1200 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI] Subdevices: 1/1 Subdevice #0: subdevice #0 aplay -L null Discard all samples (playback) or generate zero samples (capture) pulse Playback/recording through the PulseAudio sound server front:CARD=NVidia,DEV=0 HDA NVidia, ALC1200 Analog Front speakers surround40:CARD=NVidia,DEV=0 HDA NVidia, ALC1200 Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=NVidia,DEV=0 HDA NVidia, ALC1200 Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=NVidia,DEV=0 HDA NVidia, ALC1200 Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=NVidia,DEV=0 HDA NVidia, ALC1200 Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=NVidia,DEV=0 HDA NVidia, ALC1200 Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=NVidia,DEV=0 HDA NVidia, ALC1200 Digital IEC958 (S/PDIF) Digital Audio Output hdmi:CARD=NVidia,DEV=0 HDA NVidia, NVIDIA HDMI HDMI Audio Output |
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