自分がとっても苦手なH/Wの質問です。
PCはDellのLatitude3440
https://www.dell.com/support/home/ja-jp/product-support/product/latitude-3440-laptop/docs
arecord --list-devicesの結果だと
カード 0: PCH [HDA Intel PCH], デバイス 0: ALC3223 Analog [ALC3223 Analog]
サブデバイス: 1/1
サブデバイス #0: subdevice #0
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aplay -Lの結果はだとsurroundの表示がでます。これは使えるのかな。それとも使ってる？
宜しくおねがいします。
https://imgur.com/jXCiH2x.jpg
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default
Playback/recording through the PulseAudio sound server
surround21
2.1 Surround output to Front and Subwoofer speakers
surround40
4.0 Surround output to Front and Rear speakers
surround41
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50
5.0 Surround output to Front, Center and Rear speakers
surround51
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
null
Discard all samples (playback) or generate zero samples (capture)
samplerate
Rate Converter Plugin Using Samplerate Library

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