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hardware:sony_wh-ch720n [2024/07/08 15:43] – vreutzhardware:sony_wh-ch720n [2024/08/27 11:59] (aktuell) – vreutz
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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.+====== Sony WH-CH720N ======
  
-**Purpose:** 
-- Required for binaural headtracked audio in immersive VR and XR projects. 
-- Selected for low latency, Passthrough feature, and advanced Bluetooth technology. 
  
-**Initial Testing:** +The Sony WH-CH720N headphones are over-ear buetooth headphones with Active Noise Canceling (ANC), Passthrough, virtual surround sound, and multi-device pairing capabilities. They support both Bluetooth and auxiliary (Aux) connections.
-- 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:** +==== Purpose: ====
-- Press Bluetooth button for 5 seconds until the indicator light blinks.+
  
 +  * General purpose headphones
 +  * Suitable for VR/XR/MR due to audio passthrough feature
 +  * No latency in cable connection, 30-40ms latency via Bluetooth
  
-WH-CH720N supports full-duplex audio (simultaneous stereo output and microphone input). A number of scenarios are possible:+==== Quick Guide: ==== 
 +  * Pairing: Press Bluetooth button for 5 seconds until the indicator light blinks. 
 +  * Get the latest software and drivers [[https://www.sony.de/electronics/support/wireless-headphones-bluetooth-headphones/wh-ch710n/downloads|here]]
  
-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.+ 
 +==== Full-duplex audio connection ==== 
 + 
 +(simultaneous headphone and microphone use) is possible like so: 
 + 
 +1. **full-duplex using minijack cable:** 
 +  *    Connect to a (TRS) Y-splitter-cable (one socket, two connectors) to the headphones with the provided AUX cable. 
 +  *    Connect Y-cable outs to the Headphone outs and Microphone inputs of [[https://amzn.eu/d/05VuzZop|USB audio adapter]]. 
 +  *    NB: headphone audio will be mono 
 + 
 +2. **full-duplex via Bluetooth:** 
 +   - Functional on iOS and MacOS (Versions? Software?)
    - Not possible on an RPi (still testing possibilities).    - Not possible on an RPi (still testing possibilities).
  
-3. **Bluetooth and Cable (AUX) Simultaneously:**+3. **full-duplex combining Bluetooth and Cable (AUX):**
    - Bluetooth connection (in or out) not possible when headphones are already connected by aux cable (out or in).    - 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)+   - More details [[https://helpguide.sony.net/mdr/2966/v1/de/contents/TP1000776886.html|here]] 
 + 
 + 
 +---- 
 +<WRAP center round info 100%> 
 +Below are Frequency Response and Isolation curves from [[https://www.soundguys.com/sony-wh-ch720n-review-99305/|this review.]] 
 + 
 +{{:hardware:sony_freqresponse_headphones.png?direct&600|Sony WH-CH720N Headphones Frequency Response}} 
 +{{:hardware:sony_freq_response_mic.png?direct&600|Sony WH-CH720N Microphone Frequency Response}} 
 +{{:hardware:sony_noise_isolation.png?direct&600|Sony WH-CH720N Noise Isolation Response}} 
 +</WRAP> 
 + 
 +<WRAP center round tip 60%> 
 +Use [[https://www.sony.de/electronics/headphones-connect-app|Sony Headphones Connect]] app for calibrating Frequency Response via EQ. 
 +</WRAP> 
 + 
 +---- 
 + 
 +==== Images: ====
  
-**Images:** 
  Headphones, case, and included cables:  Headphones, case, and included cables:
-{{:hardware:img_3836.jpg?400|Sony WH-CH720N Carrying Case|}} +{{:hardware:img_3836.jpg?600|}} 
-{{:hardware:img_3838.jpg?400|}} +{{:hardware:img_3838.jpg?600|}} 
-{{:hardware:img_3839.jpg?400|}} +{{:hardware:img_3839.jpg?600|}} 
-{{:hardware:img_3840.jpg?400|}} +{{:hardware:img_3840.jpg?600|}} 
-{{:hardware:img_3841.jpg?400|}} +{{:hardware:img_3841.jpg?600|}} 
-{{:hardware:img_3844.jpg?400|}}+{{:hardware:img_3844.jpg?600|}} 
 + 
 + 
 +---- 
 +<WRAP center round help 100%> 
 +**Troubleshooting:** 
 +  * 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. 
 +</WRAP> 
 + 
 +==== Further information ==== 
 + 
 + 
 +  * [[https://www.sony.de/electronics/support/wireless-headphones-bluetooth-headphones/wh-ch720n/manuals|German Manuals]] 
 +  * [[https://www.sony.com/electronics/support/wireless-headphones-bluetooth-headphones/wh-ch720n/manuals|English Manuals]] 
 +  * {{ :hardware:son_wh-ch720n_manual_de.pdf |}} 
 +  * {{ :hardware:sony_wh-ch720n_manual_english.pdf |}}