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The Sony WH-CH720N headphones represent the latest iteration of Sony's wireless headphone line, succeeding the WH-CH710N model. These over-ear, Bluetooth headphones are equipped with Active Noise Canceling (ANC), Passthrough, virtual surround sound, and multi-device pairing capabilities. They support both Bluetooth and auxiliary (Aux) connections.
Purpose: - Required for binaural headtracked audio in immersive VR and XR projects. - Selected for low latency, Passthrough feature, and advanced Bluetooth technology.
Initial Testing: - Issue: Microphone's low input level (only loud noises or direct contact were audible). - Solution: Software update from Sony requiring a reset.
- Reset Process: Press Bluetooth and middle button on the right side simultaneously until Bluetooth indicator blinks four times.
Pairing: - Press Bluetooth button for 5 seconds until the indicator light blinks.
WH-CH720N supports full-duplex audio (simultaneous output and microphone input). A number of scenarios are possible:
1. Bidirectionality using Cables:
- Connect to a Y cable (one in, two outs) to the headphones with the provided AUX cable.
- Connect Y cable exits to a Headphone and Microphone to USB adapter.
- Result: Bidirectional sound in mono.
2. Bidirectionality via Bluetooth:
- Works on a phone and a Mac.
- Not possible on an RPi (still testing possibilities).
3. Bluetooth and Cable (AUX) Simultaneously:
- Bluetooth connection (in or out) not possible when headphones are already connected by aux cable (out or in).
- More details: [Link](https://helpguide.sony.net/mdr/2966/v1/de/contents/TP1000776886.html)
Images:
Headphones, case, and included cables:
For further information consult the manual: