Surround-sound processing system

Electrical audio signal processing systems and devices – Binaural and stereophonic – Stereo speaker arrangement

Reexamination Certificate

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Details

C381S017000, C381S018000, C381S001000, C381S308000, C381S310000

Reexamination Certificate

active

06956954

ABSTRACT:
Surround-effect, providing no unnatural feeling to the listeners who sit next to each other under side-by-side basis through virtual sound sources, is realized. A surround left channel signal SL and a surround right channel signal SR are mixed with an adder10and are in monaural. A first monophonic signal and a second monophonic signal thus resulted are supplied to a virtual localization processor12. A first virtual localization output of the processor12is supplied to a front left speaker SPL and a front right speaker SPR and a second virtual localization output thereof is supplied to a front center speaker SPC. In this way, virtual sound sources can be created at the right and the left to the listener2. Similarly, virtual sound sources can also be created at the right and the left to the listener3. Sound fields from the virtual surround sources are in reverse to the listener2and the listener3. However, no substantial drawbacks caused by the reversal are observed because monophonic signals are reproduced as the surround signals in this embodiment. In this way, surround-effect with natural feeling can be achieved.

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Bauck, Jerry, Generalized Transaural Stereo and Applications , Sep. 1996, Journal of Audioo Engineering Society, vol. 44, No. 9, pp. 693-694, Figure 5.
Bauck, et al., “Generalized Transaural Stereo and Applications,” J. Audio Eng. So., vol. 44, No. 9, Sep. 1996.
International Search Report.

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