Electrical audio signal processing systems and devices – Noise or distortion suppression – Interpolation
Patent
1987-06-19
1988-07-26
Isen, Forester W.
Electrical audio signal processing systems and devices
Noise or distortion suppression
Interpolation
381205, H04R 102
Patent
active
047606010
ABSTRACT:
A high efficiency labyrinth type enclosure uses chambers of triangular crossectional area and a single speaker with two separate voice coils, in conjunction with two speaker back wave paths, one tuned for woofer frequencies and the other tuned for subwoofer frequencies, to simultaneously reproduce all woofer and subwoofer frequencies of both channels of a stereo signal.
REFERENCES:
patent: 2806547 (1957-09-01), Sewell
patent: 3608665 (1971-09-01), Drisi
patent: 4235301 (1980-11-01), Mitchell
"Labyrinth Speakers for Hi Fi", D. B. Weems, Popular Electronics, Jan. 1972, p. 40.
D. B. Weems, "The Amazing Maze", Winter, 1973 issue of Stereo, p. 54.
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