雑記/2025-07-14 - DEX Lab

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Bluetoothイヤホン/ヘッドホンの音質が劣化したかなと思ったら †

現象:

急にbluetoothヘッドホンの音質が下がった。音にノイズが入るようになった。
タスクトレイにあった「ヘッドホン」が消えた。「ヘッドセット」があり、そちらがデフォルトになっていた。
「ヘッドセット」だと音質が下がる。Discord等のマイクを使う場合は、こちらに切り替えていた。

環境:

Win10 pro 22H2
SONY WH-1000XM3
Alternative A2DP Driver v1.5.0でLDAC接続していた

原因:

デバイスマネージャーを見ると、「サウンド、ビデオ、およびゲームコントローラー」に同じデバイスに2つドライバーがあり、片方にエラーが出ていた
- OK: WH-1000XM3 Hands-Free AG audio (ヘッドセット)
- 黄色い△: WH-1000XM3 Stereo (ヘッドホン)

解決:

Alternative A2DP Driver v1.7.0が出ていたので再インストール。デバイスマネージャーの「WH-1000XM3 Stereo」の黄色い△が消え、エラーが解消した。

記事:

USBアダプタを変えて、bluetoothヘッドホンの音質が悪い・音量調整が出来なくなった

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Last-modified: 2025-07-14 (月) 21:42:41