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Alsa Sound for Music is horrible on USB receiver
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dman777
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Joined: 10 Jan 2007
Posts: 767

PostPosted: Tue Feb 11, 2014 4:13 am    Post subject: Alsa Sound for Music is horrible on USB receiver Reply with quote

I have a USB receiver that I am using with Alsa sound driver. The music sound quality is awful. Especially if it something like Pandora. If stream Pandora from my TV to the same receiver, it sounds a 100% better. Is there anything I can do to improve the music quality audio from my Gentoo system?
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audiodef
Watchman
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Joined: 06 Jul 2005
Posts: 5308

PostPosted: Tue Feb 11, 2014 3:19 pm    Post subject: Reply with quote

1. Can you describe your hardware?

2. Can you describe what your audio sounds like (screechy, distorted, crackly, etc.)?

3. How does your audio sound if you use headphones directly connected to the computer?
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dman777
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PostPosted: Thu Feb 13, 2014 6:18 am    Post subject: Reply with quote

The audio is a JVC digital receiver with burr brown DACs.

The sound personality is airy and thin. Even with the EQ from Audacious, it still sounds bad. It's do-able but not at the level it should be in quality. I tried pulseAudio and there was no diff. in sound. I hate to get a windows PC just to enjoy my music at good quality, but I dunno..
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PaulBredbury
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Joined: 14 Jul 2005
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PostPosted: Thu Feb 13, 2014 10:05 am    Post subject: Reply with quote

Sending bass to tweeter speakers? See my ~/.asoundrc, to fix that.

You haven't even said how many speakers you have.
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dman777
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PostPosted: Thu Feb 13, 2014 11:27 pm    Post subject: Reply with quote

I'm using 2 channel bookshelf speakers.

Here's my .asoundrc file:

Code:
four@localhost ~ $ cat .asoundrc
pcm.!default {
   type plug
   slave.pcm "dmixer"
}

pcm.dmixer  {
   type dmix
   ipc_key 1024
   slave {
      pcm "hw:0,0"
      format S32_LE
      period_time 0
      period_size 1024
      buffer_size 8192

      rate 96000
   }
   bindings {
      0 0
      1 1
   }
}

ctl.dmixer {
   type hw
   card 0
   device 0
}
pcm.dsp {
    type plug
    slave.pcm "dmixer"     # use our new PCM here
}
ctl.mixer {
    type hw
    card 0
}
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