Acoustic system with transducer and venturi

Details Acoustic system with transducer and venturi Acoustic system with transducer and venturi

1990-09-13

1992-02-18

Brown, Brian W.

Acoustics

Sound-modifying means

By wave interference

381 71, F01N 106

Patent

active

050885758

ABSTRACT:
An acoustic system has a chamber (12) having an input (14) for receiving an input acoustic wave and guiding the input acoustic wave along a flowpath (16) to a chamber output (18), an acoustic transducer (20, 22, 24) interacting with the acoustic wave in the chamber (12), and a venturi (30, 32, 34) drawing air into the flowpath (16) to flow to the chamber output (18). The venturi aspirates internal areas of the chamber to keep the acoustic transducers clean and/or aspirates external air into the chamber past the transducers to cool same.

REFERENCES:
patent: 1217021 (1917-02-01), Lebedeff
patent: 2043416 (1934-03-01), Lueg
patent: 4473906 (1984-09-01), Warnaka
patent: 4487289 (1984-12-01), Kicinski et al.
patent: 4665549 (1987-05-01), Eriksson et al.
patent: 4677676 (1987-06-01), Eriksson et al.
patent: 4677677 (1987-06-01), Eriksson et al.
patent: 4697668 (1987-10-01), Barker
patent: 4736431 (1988-04-01), Allie et al.
patent: 4815139 (1989-03-01), Eriksson et al.
patent: 4837834 (1989-06-01), Allie

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