Applications of a digital audio-signal processor in T.V. sets

Digital audio-signal processors are already being used in professional applications (mixing consoles, artificial reverberation etc.). In this paper some applications of such a device in a consumer product, e.g. a television set, are discussed. Apart from well-known functions such as tone, volume and balance control the following rather new functions can also be implemented using a digital processor: - a pseudo-stereo circuit that can be used if the television set is equipped to reproduce stereophonic signals, but the program is transmitted in mono. - a stereo base expanding circuit to be used when the two loudspeakers are closely spaced. - a circuit for enhancing the impression of spaciousness. - a volume control with combined loudness correction.