Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent
1972-12-11
1976-02-03
Olms, Douglas W.
Acoustics
Anatomic or prosthetic relation
Ear and mouth
181 33L, H04R 128
Patent
active
039366065
ABSTRACT:
An acoustic receiver, amplifier and transmitter generate an anti wave which is in-phase and of mirror symmetry with respect to a propagating acoustic wave. Coherent propagation means such as an acoustic duct of particular dimensions redirects and/or converts the acoustic wave and the anti wave, which otherwise propagate with incremental wavefronts at different vectors, into plane waves which are superimposed to create wave interference which itself propagates. For noise of high sound pressure level such as created by a gas turbine engine, the acoustic transmitter comprises a modulated gas flow speaker coupled to one or more bleed ports which supply gas at one or more pressures offset from ambient pressure.
REFERENCES:
patent: 2043416 (1936-06-01), Lueg
patent: 2048508 (1936-07-01), Mallina
patent: 2798121 (1957-07-01), Rowe et al.
patent: 2983790 (1961-05-01), Olson
patent: 3185778 (1965-05-01), Giannini et al.
patent: 3602331 (1971-08-01), Bschorr
patent: 3685610 (1972-08-01), Bschorr
patent: 3693749 (1972-09-01), Motsinger et al.
patent: 3826870 (1974-07-01), Wurm et al.
J. C. Bleazey, "Electronic Sound Absorber" Journal of the Aud. Eng. Soc., Vol. 10, No. 2, Apr. 1962 pp. 135-139
Olson "Electronic Control of Noise . . .", Journal of the Acoustical Soc. of Amer. Vol. 28 No. 5, Sept. 1956 pp. 966-972
E. J. Richards et al., "Noise and Acoustic Fatigue in Aeronautics" John Wiley & Sons, 1968 Chap. 2 pp. 43-57
LandOfFree
Acoustic abatement method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acoustic abatement method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic abatement method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2123100