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- # ~/.asoundrc or /etc/asound.conf
- # ALSA configuration file
- ##### USAGE #####
- # Save this file as "~/.asoundrc" (for user-specific sound configuration) or
- # "/etc/asound.conf" (for system-wide sound configuration) and specify ALSA
- # device names ad described in the next section.
- ##### DEVICE NAMES #####
- # This configuration file defines four devices for use by the user. Those
- # devices are "analog", "mixed-analog", "digital", and "mixed-digital". The
- # user may also re-define "default" to be identical to one of the above-named
- # devices (i.e. to send all sound output to the digital output unless otherwise
- # specified). Use the device names as described below:
- # - "analog" outputs to the analog output directly and (at least on software
- # sound cards) blocks other audio output. After playback completes, "queued"
- # sounds are output in sequence.
- # - "mixed-analog" mixes audio output from multiple programs into the analog
- # output (so you can hear beeps, alerts, and other noises while playing back
- # an audio stream).
- # - "digital" outputs to the digital output directly. Since most (all?)
- # digital outputs expect 48kHz PCM audio, this may not work for some playback
- # (i.e. CD's--which are 44.1kHz PCM audio--or 32kHz audio streams from TV
- # recordings, etc.).
- # - "mixed-digital"
- # All other devices created within this file are used only by the configuration
- # file itself and should /not/ be used directly. In other words, do not use
- # the devices "analog-hw", "dmix-analog", "digital-hw", or "dmix-digital".
- ##### IMPORTANT #####
- # To make this ALSA configuration file work with your sound card, you will need
- # to define the appropriate card and device information for the "analog-hw" and
- # "digital-hw" devices below. You can find the card and device information
- # using "aplay -l".
- ##### Configuration File #####
- # Override the default output used by ALSA. If you do not override the
- # default, your default device is identical to the (unmixed) "analog" device
- # shown below. If you prefer mixed and/or digital output, uncomment the
- # appropriate four lines below (only one slave.pcm line).
- #
- # Note, also, that as of ALSA 1.0.9, "software" sound cards have been modified
- # such that their default "default" device is identical to the "mixed-analog"
- # device. Whether using an ALSA version before or after 1.0.9, it does no harm
- # and has no affect on performance to redefine the device (even if the
- # redefinition does not change anything). Also, by using this ALSA
- # configuration file, you once again have access to unmixed analog output using
- # the "analog" device.
- pcm.!default {
- type plug
- ## Uncomment the following to use (unmixed) "analog" by default
- # slave.pcm "analog-hw"
- ## Uncomment the following to use "mixed-analog" by default
- slave.pcm "dmix-analog"
- ## Uncomment the following to use (unmixed) "digital" by default
- # slave.pcm "digital-hw"
- ## Uncomment the following to use "mixed-digital" by default
- # slave.pcm "dmix-digital"
- }
- # Control device (mixer, etc.) for the card
- ctl.!default {
- type hw
- card 0
- }
- # Alias for (converted) analog output on the card
- # - This is identical to the device named "default"--which always exists and
- # refers to hw:0,0 (unless overridden)
- # - Therefore, we can specify "hw:0,0", "default", or "analog" to access analog
- # output on the card
- # - Note that as of ALSA 1.0.9, "software" sound card definitions redefine
- # "default" to do mixing, meaning this device is different from "default" and
- # allows playback while blocking other sound sources (until playback
- # completes).
- pcm.analog {
- type plug
- slave.pcm "analog-hw"
- hint {
- show on
- description "Analog Output - Use analog outputs, converting samples, format, and rate as necessary."
- }
- }
- # Control device (mixer, etc.) for the card
- ctl.analog {
- type hw
- card 0
- }
- # Alias for (converted) mixed analog output on the card
- # - This will accept audio input--regardless of rate--and convert to the rate
- # required for the dmix plugin (in this case 48000Hz)
- # - Note that as of ALSA 1.0.9, "software" sound card definitions redefine
- # "default" to do mixing, meaning this device is identical to "default" for
- # "software" sound cards.
- pcm.mixed-analog {
- type plug
- slave.pcm "dmix-analog"
- hint {
- show on
- description "Mixed Analog Output - Use analog outputs, converting samples, format, and rate as necessary. Allows mixing with system sounds."
- }
- }
- # Control device (mixer, etc.) for the card
- ctl.mixed-analog {
- type hw
- card 0
- }
- # Alias for (converted) digital (S/PDIF) output on the card
- # - This will accept audio input--regardless of rate--and convert to the rate
- # required for the S/PDIF hardware (in this case 48000Hz)
- pcm.digital {
- type plug
- slave.pcm "digital-hw"
- hint {
- show on
- description "Digital Output - Use digital outputs, converting samples, format, and rate as necessary."
- }
- }
- # Control device (mixer, etc.) for the card
- ctl.digital {
- type hw
- card 0
- }
- # Alias for mixed (converted) digital (S/PDIF) output on the card
- # - This will accept audio input--regardless of rate--and convert to the rate
- # required for the S/PDIF hardware (in this case 48000Hz)
- pcm.mixed-digital {
- type plug
- slave.pcm "dmix-digital"
- hint {
- show on
- description "Mixed Digital Output - Use digital outputs, converting samples, format, and rate as necessary. Allows mixing with system sounds."
- }
- }
- # Control device (mixer, etc.) for the card
- ctl.mixed-digital {
- type hw
- card 0
- }
- # The following devices are not useful by themselves. They require specific
- # rates, channels, and formats. Therefore, you probably do not want to use
- # them directly. Instead use of of the devices defined above.
- # Alias for analog output on the card
- # Do not use this directly--it requires specific rate, channels, and format
- pcm.analog-hw {
- type hw
- card 0
- # The default value for device is 0, so no need to specify
- # - Uncomment one of the below or create a new "device N" line as appropriate
- # for your sound card
- # device 1
- # device 4
- }
- # Control device (mixer, etc.) for the card
- ctl.analog-hw {
- type hw
- card 0
- }
- # Alias for digital (S/PDIF) output on the card
- # Do not use this directly--it requires specific rate, channels, and format
- pcm.digital-hw {
- type hw
- card 0
- device 1
- # - Comment out "device 1" above and uncomment one of the below or create a
- # new "device N" line as appropriate for your sound card
- # device 2
- # device 4
- }
- # Control device (mixer, etc.) for the card
- ctl.digital-hw {
- type hw
- card 0
- }
- # Direct software mixing plugin for analog output on the card
- # Do not use this directly--it requires specific rate, channels, and format
- pcm.dmix-analog {
- type dmix
- ipc_key 1234
- slave {
- pcm "analog-hw"
- period_time 0
- period_size 1024
- buffer_size 4096
- rate 48000
- }
- }
- # Control device (mixer, etc.) for the card
- ctl.dmix-analog {
- type hw
- card 0
- }
- # Direct software mixing plugin for digital (S/PDIF) output on the card
- # Do not use this directly--it requires specific rate, channels, and format
- pcm.dmix-digital {
- type dmix
- ipc_key 1235
- slave {
- pcm "digital-hw"
- period_time 0
- period_size 1024
- buffer_size 4096
- rate 48000
- }
- }
- # Control device (mixer, etc.) for the card
- ctl.dmix-digital {
- type hw
- card 0
- }
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