• 本文
• リロード
• 差分
• バックアップ
• 名前変更
• リファラ
• 新規ページ
• 編集

ALSA

ALSA/デバイス

Top / ALSA / デバイス

デバイス指定

• aplay/arecord -D <PCM name>

ALSA/カード

• Linux/proc/asound/cards
• aplay -l - List all soundcards and digital audio devices (PLAYBACK)
• arecord -l? - List all soundcards and digital audio devices (CAPTURE)

  aplay -l
  **** List of PLAYBACK Hardware Devices ****
  card 0: I82801AAICH [Intel 82801AA-ICH], device 0: Intel ICH [Intel 82801AA-ICH]
    Subdevices: 0/1
    Subdevice #0: subdevice #0

ALSA/PCMデバイス

• aplay -L - List all PCMs defined
• arecord -L - List all PCMs defined

デバイス名

• default

  hw:0,0のこと

• プラグイン

  plughw:
  dmix:?
  dshare:?

VirtualBox

• default	Playback/recording through the PulseAudio sound server
  null	Discard all samples (playback) or generate zero samples (capture)
  pulse	PulseAudio Sound Server
  sysdefault	Default Audio Device	CARD=I82801AAICH
  front?	Front speakers	CARD=I82801AAICH,DEV=0
  surround21?
  surround40?
  surround41?
  surround50?
  surround51?
  iec958?	IEC958 (S/PDIF) Digital Audio Output	CARD=I82801AAICH,DEV=0
  dmix	Direct sample mixing device
  dsnoop	Direct sample snooping device
  hw:	Direct hardware device without any conversions
  plughw:	Hardware device with all software conversions

実機

• default	Playback/recording through the PulseAudio sound server
  null	Discard all samples (playback) or generate zero samples (capture)
  pulse	PulseAudio Sound Server
  sysdefault	Default Audio Device	CARD=PCH
  front?
  dmix	Direct sample mixing device
  dsnoop	Direct sample snooping device
  hw:	Direct hardware device without any conversions	CARD=PCH,DEV=0
  plughw:	Hardware device with all software conversions	CARD=PCH,DEV=0

デバイスファイル

• Linux/dev/snd