LinuxMusicians

Capoeira wrote:

Capoeira wrote: no, it's set up to 41k, i've seen it today, forgot the comand.
What does the resample is DMIX: http://alsa.opensrc.org/index.php/Dmix# ... quality.3F

how can I merge that in? I tried:

Code: Select all

# playback PCM device: using loopback subdevice 0,0
pcm.amix {
  type dmix
  ipc_key 219345
  slave {
  pcm "hw:Loopback,0,0"
  period_size 1024
        buffer_size 2048
        rate 44100
                     }
}

but still:

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[studio@myhost ~]$ alsa_in -j cloop -dcloop
WARNING: Rate doesn't match (requested 44100Hz, get 48000Hz)
WARNING: buffer size does not match: (requested 2048, got 12000)
WARNING: period size does not match: (requested 1024, got 6000)
selected sample format: 16bit
delay = 12416

and

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[studio@myhost música clássica]$ mplayer -ao alsa Ravel\ -\ Bolero\ \&\ other\ Orchestral\ Works\ \ 02\ -\ La\ Valse.mp3 
MPlayer SVN-r32025-4.5.1 (C) 2000-2010 MPlayer Team
159 audio & 347 video codecs
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing Ravel - Bolero & other Orchestral Works  02 - La Valse.mp3.
Audio only file format detected.
Clip info:
 Title: La Valse                      
 Artist: Ravel                         
 Album: Bolero & other Orchestral Work
 Year:     
 Comment:                             
 Track: 2
 Genre: Unknown
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 44100 Hz, 2 ch, s16le, 192.0 kbit/13.61% (ratio: 24000->176400)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A:   9.2 (09.2) of 745.0 (12:25.0)  0.9% 

note that I used -q 1 as an option to alsa_in/out. This has to do with the resampling quality. At 2.3ms latency, 96kHz s.r. on a 2 x 2.4 GHz dual core CPU system and using Jack2, I get a low CPU usage (1-2%) and the quality is reasonable. If you push it to 2, 3 or 4, the CPU will increase quite a lot at small buffering / latency

Capoeira wrote:

Capoeira wrote: no, it's set up to 41k, i've seen it today, forgot the comand.
What does the resample is DMIX: http://alsa.opensrc.org/index.php/Dmix# ... quality.3F

how can I merge that in? I tried:

# playback PCM device: using loopback subdevice 0,0
pcm.amix {
  type dmix
  ipc_key 219345
  slave {
  pcm "hw:Loopback,0,0"
  period_size 1024
        buffer_size 2048
        rate 44100
                     }
}

# capture PCM device: using loopback subdevice 0,1
pcm.asnoop {
  type dsnoop
  ipc_key 219346
  slave.pcm "hw:Loopback,0,1"
}

# duplex device combining our PCM devices defined above
pcm.aduplex {
  type asym
  playback.pcm "amix"
  capture.pcm "asnoop"
}

# ------------------------------------------------------
# for jack alsa_in and alsa_out: looped-back signal at other ends
pcm.ploop {
  type plug
  slave.pcm "hw:Loopback,1,1"
}

pcm.cloop {
  type dsnoop
  ipc_key 219348
  slave {
  pcm "hw:Loopback,1,0"
  period_size 1024
        buffer_size 2048
        rate 44100
                     }
}

# ------------------------------------------------------
# default device

  pcm.!default {
  type plug
  slave.pcm "aduplex"
  hint {
         show on
         description "default_show"
    }
}

thorgal wrote: so all is working for you now