Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1984-10-31
1986-12-16
Rubinson, Gene Z.
Electrical audio signal processing systems and devices
Sound effects
Reverberators
381 74, 381119, 381120, 381122, 367199, H04R 110, H04R 300, H03F 2100, H04B 100
Patent
active
046298347
ABSTRACT:
Apparatus for enhancing human hearing includes a pair of parallel-connected directional microphone elements responsive to frequencies ranging from below the audible frequency range to above the audible frequency range, the microphone elements facing in opposite directions and mounted in a parabolic reflector. The microphone element output signals are separated into infrasonic, sonic, and ultrasonic channels by filters. The infrasonic and ultrasonic channel signals are processed by a frequency heterodyning process to signals having frequencies within the range of human hearing. The channel signals are then selectively combined, amplified, and supplied to an earphone to render audible sounds outside the range of human hearing and aid in the detection, location, and classification of events of interest.
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Perry Marvin K.
Simmons James A.
Tromel Richard H.
Waggoner Terrence C.
Bio-Dynamics Research & Development Corporation
Byrd Danita R.
Rubinson Gene Z.
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