While traditionally TVs would have built-in stereo speakers, these days a number of external loudspeakers are used to allow the viewer experience surround sound. The most commonly used 5.1 surround sound format requires setting up a total of 6 loudspeakers. The more recent 7.1 standard increases this number to 8 by adding two additional side speakers.

Consequently the setup of home theater systems has become a fairly difficult procedure. Also, long speaker wires are often unattractive. This technique applies signal processing to the audio and adds phase shifts and cues to the sound which would ordinarily be sent by the …