Alinking ALC-9751 - Audio Settings; Audio Raw Format Selection

Basic Setting > Audio (Sound)
Basic Setting > Audio > Audio (sound setting)
 Basic Setting > Audio > Audio > Audio Raw Format
You can select No Audio or PCM. When you select No Audio, the sound
transmission from the built-in microphone pauses. When you select PCM, the
sound transmission resumes. The factory default is PCM.
Sound transmission format
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