Pan-pot control apparatus

Details Pan-pot control apparatus Pan-pot control apparatus

1984-09-11

1987-03-03

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Pseudo stereophonic

381 18, 84DIG26, H04R 500

Patent

active

046481150

ABSTRACT:
An input musical tone signal is amplified by a first VCA and then supplied to second and third VCAs. The second and third VCAs are controlled by sine-wave signals which have a 180.degree.-phase difference. Musical tone signals, which have been so controlled that a pan-pot may move right and left, are supplied to right and left loudspeakers. The first VCA is controlled by a sine-wave signal whose phase is different by 90.degree. from the phases of the signals supplied to the second and third VCAs. The volume of a composite musical tone made up of the tones generated by the loudspeakers is thereby controlled, thus also moving the pan-pot to the front and rearward.

REFERENCES:
patent: 3761631 (1973-09-01), Ito et al.
patent: 4002836 (1977-01-01), Gardner
Chowning, "The Simulation of Moving Sound Sources," Computer Music Journal, Jun. 1977.
Elekor, May 1979, pp. 5-40 to 5-46.
Patents Abstracts of Japan, E-51, Apr. 10, 1981, vol. 5/No. 51.
Patents Abstracts of Japan, E-153, Jan. 19, 1983, vol. 7/No. 13.

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