.asoundrc

.asoundrc

defaults.pcm.!rate_converter "samplerate_best"

# ******************************************************
# PLAYBACK
# hardware 0,0 : ALSA playback 
pcm.loophw00 {
  type hw
  card Loopback
  device 0
  subdevice 0
  format S32_LE
  rate 48000
}

# playback PCM device: using loopback subdevice 0,0
pcm.amix {
  type dmix
  ipc_key 219345
  slave {
      pcm loophw00
      period_size 8192 
      periods 2
  }
}

# software volume: using loopback subdevie 0,0
pcm.asoftvol {
  type softvol
  slave.pcm "amix"

  control { name "Volume Out" }

  min_dB -51.0
  max_dB  20.0
}

# ------------------------------------------------------
# for Jack alsa_in: looped-back signal at other end
pcm.cloop {
  type hw
  card Loopback
  device 1
  subdevice 0
  format S32_LE
  rate 48000
}

# ******************************************************
# CAPTURE
# hardware 0,1 : used for ALSA capture
pcm.loophw01 {
  type hw
  card Loopback
  device 0
  subdevice 1
  format S32_LE
  rate 48000
}

# software volume
pcm.bsoftvol {
  type softvol
  slave.pcm "loophw01"

  control { name "Volume In" }

  min_dB -51.0
  max_dB  20.0
}
# ------------------------------------------------------
# for Jack  alsa_out: looped-back signal at other ends
pcm.ploop {
  type hw
  card Loopback
  device 1
  subdevice 1
  format S32_LE
  rate 48000
}

# ******************************************************
# duplex device combining our PCM devices defined above
pcm.aduplex {
  type asym
  playback.pcm "asoftvol"
  capture.pcm "bsoftvol"
}


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

pcm.!default {
  type plug
  slave.pcm "aduplex"
  hint {
    show on
    description "Duplex Loopback"
  }
}
ctl.!default {
  type hw
  card Loopback
}