Acoustic conductance and silencer utilizing same

Details Acoustic conductance and silencer utilizing same Acoustic conductance and silencer utilizing same

1991-10-24

1993-10-26

Peng, John K.

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Adjacent ear

381 94, H03B 2900

Patent

active

052573168

ABSTRACT:
An acoustic conductance is formed with oscillatory planes parallel to a duct and disposed on an identical circumference of the duct along a plane intersecting at right angles the duct so that the total area of the oscillatory planes will be substantially more than twice as large as a sectional area of the duct. The acoustic conductance is thereby made less affective on a fluid and provides a pertinent disposition of the acoustic conductance.

REFERENCES:
patent: 2840178 (1958-06-01), Boleslav
patent: 4473906 (1984-09-01), Warnaka et al.
patent: 4527282 (1985-07-01), Chaplin et al.
patent: 4589133 (1986-05-01), Swinbanks
patent: 4665549 (1987-05-01), Eriksson et al.
patent: 4947434 (1990-08-01), Ito
patent: 4965837 (1990-10-01), Murayama et al.

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