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From: "Jonathan Gage" <chimera@darkscape.net>
To: alsa-devel@lists.sourceforge.net
Subject: correction: audiophile USB stream0 output
Date: Fri, 23 May 2003 01:58:54 +1000	[thread overview]
Message-ID: <003801c3207b$0c70a140$3700a8c0@jono> (raw)

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agh, many apologies for my stupidity. posting cat /proc/asound/stream0 with nothing playing back was a silly, useless excercise :) here is stream0 while playing back, the problem seems to be that the later drivers (0.9.3c) are running the card at 96khz (which results it digital noise) while the older drivers (0.9.0rc5) are running it at 48khz. I guess this is what the difference in the "momentary frequency" between the two tests means... is there a way to make the card run at 48khz? (.asoundrc?)

here are the results:

_________alsa driver 0.9.3c

bash-2.05a# cat stream0 
M-Audio Audiophile USB (tm) at 002/003 : USB Audio 
 
Playback: 
  Status: Running 
    Interface = 2 
    Altset = 4 
    URBs = 2 [ 1 1 ] 
    Packet Size = 200 
    Momentary freq = 95,999 Hz 
  Interface 2 
    Altset 1 
    Format: S24_3LE 
    Channels: 2 
    Endpoint: 3 OUT (ADAPTIVE) 
    Rates: 48001 - 96000 (continuous) 
  Interface 2 
    Altset 2 
    Format: S24_3LE 
    Channels: 2 
    Endpoint: 3 OUT (ASYNC) 
    Rates: 8000 - 48000 (continuous) 
  Interface 2 
    Altset 3 
    Format: S24_3LE 
    Channels: 2 
    Endpoint: 3 OUT (ADAPTIVE) 
    Rates: 8000 - 48000 (continuous) 
  Interface 2 
    Altset 4 
    Format: S16_LE 
    Channels: 2 
    Endpoint: 3 OUT (ASYNC) 
    Rates: 8000 - 48000 (continuous) 
  Interface 2 
    Altset 5 
    Format: S16_LE 
    Channels: 2 
    Endpoint: 3 OUT (ADAPTIVE) 
    Rates: 8000 - 48000 (continuous) 
 
Capture: 
  Status: Running 
    Interface = 5 
    Altset = 3 
    URBs = 2 [ 1 1 ] 
    Packet Size = 200 
    Momentary freq = 44,099 Hz 
  Interface 5 
    Altset 1 
    Format: S24_3LE 
    Channels: 2 
    Endpoint: 6 IN (ASYNC) 
    Rates: 48001 - 96000 (continuous) 
  Interface 5 
    Altset 2 
    Format: S24_3LE 
    Channels: 2 
    Endpoint: 6 IN (ASYNC) 
    Rates: 8000 - 48000 (continuous) 
  Interface 5 
    Altset 3 
    Format: S16_LE 
    Channels: 2 
    Endpoint: 6 IN (ASYNC) 
    Rates: 8000 - 48000 (continuous) 


_________alsa driver 0.9.0rc5

bash-2.05a# cat stream0 
M-Audio Audiophile USB (tm) : USB Audio 
 
Playback: 
  Status: Running 
    Interface = 2 
    Altset = 4 
    URBs = 2 [ 1 1 ] 
    Packet Size = 200 
    Momentary freq = 48,001 Hz 
  Interface 2 
    Altset 1 
    Format: S24_3LE 
    Channels: 2 
    Endpoint: 3 OUT (ADAPTIVE) 
    Rates: 48001 - 96000 (continous) 
  Interface 2 
    Altset 2 
    Format: S24_3LE 
    Channels: 2 
    Endpoint: 3 OUT (ASYNC) 
    Rates: 8000 - 48000 (continous) 
  Interface 2 
    Altset 3 
    Format: S24_3LE 
    Channels: 2 
    Endpoint: 3 OUT (ADAPTIVE) 
    Rates: 8000 - 48000 (continous) 
  Interface 2 
    Altset 4 
    Format: S16_LE 
    Channels: 2 
    Endpoint: 3 OUT (ASYNC) 
    Rates: 8000 - 48000 (continous) 
  Interface 2 
    Altset 5 
    Format: S16_LE 
    Channels: 2 
    Endpoint: 3 OUT (ADAPTIVE) 
    Rates: 8000 - 48000 (continous) 
 
Capture: 
  Status: Running 
    Interface = 5 
    Altset = 3 
    URBs = 2 [ 1 1 ] 
    Packet Size = 200 
    Momentary freq = 44,099 Hz 
  Interface 5 
    Altset 1 
    Format: S24_3LE 
    Channels: 2 
    Endpoint: 6 IN (ASYNC) 
    Rates: 48001 - 96000 (continous) 
  Interface 5 
    Altset 2 
    Format: S24_3LE 
    Channels: 2 
    Endpoint: 6 IN (ASYNC) 
    Rates: 8000 - 48000 (continous) 
  Interface 5 
    Altset 3 
    Format: S16_LE 
    Channels: 2 
    Endpoint: 6 IN (ASYNC) 
    Rates: 8000 - 48000 (continous) 





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             reply	other threads:[~2003-05-22 15:58 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-05-22 15:58 Jonathan Gage [this message]
2003-05-23 10:21 ` correction: audiophile USB stream0 output Takashi Iwai

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