Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent
1976-06-18
1977-10-18
Stellar, George G.
Acoustics
Anatomic or prosthetic relation
Ear and mouth
181147, H04R 102, H04R 120
Patent
active
040547507
ABSTRACT:
A plurality of speakers are carried on a generally vertical board. The board is carried for pivotal motion about a vertical axis. The board is housed within an enclosure permitting sound radiation in all directions. Some speakers are directed to face oppositely from other speakers, all of which having a different operating frequency. One of the speakers is driven by a separate amplifier. The system is truly omnidirectional with acoustical phase problems being overcome because all but the high frequency drivers or tweeters have the same size.
REFERENCES:
patent: 1866831 (1932-07-01), Wolff et al.
patent: 3491204 (1970-01-01), Sherno
patent: 3903989 (1974-05-01), Bauer
Audio Aug. 1974, p. 61.
Stereo Review June, 1975.
Bowe Richard E.
Montgomery Ralph
Farkas Robert D.
Stellar George G.
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