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Audio visual

Connecting a TRRS microphone to a computer
Using a microphone with a TRRR (mic and headset) phone connector.
Television sitting distance
The ideal sitting distance is based on the image height, not the television size.
Audio formats for video discs
An overview of the different audio formats used on DVD, Blu-ray and UHD discs.
Blu-ray zones: with empirical examples
Region locking on Blu-ray discs with examples from my collection.
Oppo BDP-93 Blu-ray disc player: beta firmware
Solves HDMI audio problems and use with the Multiregion Pro kit.