Sony UWP-D27 2-Person Camera-Mount Wireless Omni Lavalier Microphone System (UC90: 941 to 960 MHz) - Manual (Page 323)

Help Guide
Interchangeable Lens Digital Camera
ILCE-7C α7C
Audio signals
Selects whether the product produces a sound or not.
Menu item details
On:
Sounds are produced for example when the focus is achieved by pressing the shutter button halfway down.
Off:
Sounds are not produced.
Note
If [Focus Mode] is set to [Continuous AF], the camera will not beep when it focuses on a subject.
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MENU → (Camera Settings2) → [Audio signals] → desired setting. 1
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