Quadraphonic headphone with ambience programmer

Details Quadraphonic headphone with ambience programmer Quadraphonic headphone with ambience programmer

1975-03-06

1976-10-05

Olms, Douglas W.

179156R, H04R 500

Patent

active

039846369

ABSTRACT:
A quadraphonic headphone including an ambience control circuit which is contained within a hand sized case which is connected to the audio transducers in each headphone cup and which may be connected to a source of quadraphonic program material. The control circuit includes switches that allow the user to select the desired cross coupling of phase shifted audio signals between left and right primary audio transducers and left and right secondary audio tranducers, allows him to reverse the connections to any one of the audio transducers and allows him to sum the signals applied to the left or right audio transducers. The effect of this electronic mixing is enhanced by asymmetrically mounted the audio transducers within each headphone cup.

REFERENCES:
patent: 3592978 (1971-07-01), Hess
patent: 3609240 (1971-09-01), Fixler
patent: 3794779 (1974-02-01), Greuzerd et al.
patent: 3796840 (1974-03-01), Ohta
patent: 3830978 (1974-08-01), Odagi
patent: 3863028 (1975-01-01), Fixler
patent: 3883692 (1975-05-01), Tsurushima
patent: 3900707 (1975-08-01), Hanson

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