
1) Sound production technology
Found on
https://www.crosswordclues.com/clue/trifield

The Trifield process is a form of audio rendering in which a conventional two-channel signal is decoded (using Ambisonic principles) to an additional number of loudspeakers, typically three in the form of a Left-Centre-Right front stage. The technique provides significant additional image stability, especially when the listener is moving or off-ax...
Found on
http://en.wikipedia.org/wiki/Trifield
No exact match found.