Dimensional sound producing apparatus and method

Details Dimensional sound producing apparatus and method Dimensional sound producing apparatus and method

1979-04-05

1980-08-19

Olms, Douglas W.

H04S 100

Patent

active

042185858

ABSTRACT:
A sound reproducing system having right and left speakers which transmit right and left stereo sounds, respectively. The right signal, in addition to driving the right speaker, is inverted and delayed to produce a compensating signal which is transmitted to the left speaker to produce a delayed compensating sound pattern from the left speaker. The amount of delay and amplitude of the compensating sound pattern is selected so that the major sound pattern emanating from the right speaker is at least partially cancelled at the location of the hearer's left ear. The signal for the left speaker is inverted and delayed in a similar manner to produce a compensating sound pattern from the right speaker to at least partially cancel the major sound pattern emanating from the left speaker at the location of the hearer's right ear. The result is to give the hearer a greater dimensionalized impression of the overall sound patterns.

REFERENCES:
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patent: 4118599 (1978-10-01), Iwahara et al.
patent: 4121059 (1978-10-01), Nakabayashi
patent: 4139728 (1979-02-01), Haramoto et al.
"Letters to the Editors" in Acustica, vol. 24, 1971 pp. 222 to 225, by Damaske and Mellert.
"Head-Related Two-Channel Stereophony with Loudspeaker Reproduction", by Damaske, 1971 by Acoustical Society of America, pp. 1109-1115, Journal of Acous. Soc. of America, vol. 50, No. 4, Part 2.
"Some Techniques Toward Better Stereophonic Perspective" by Bauer, in IEEE Transactions on Audio, May-Jun. Part I 1963, pp. 88-92.
"Sound Localization in the Median Plane" by Blauert in Acoustica, vol. 22, 1969/70, pp. 205-213.
"Ein Verfahren . . . " by Damaske and Mellert in Acoustica, vol. 22, 1969/70, pp. 153 to 162.
"Sound Images Localization Controlling Technique" by Gotoh in National Technical Report, vol. 22, No. 4, pp. 460-466, Aug. 1976.

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