Active noise cancelling muffler

Details Active noise cancelling muffler Active noise cancelling muffler

1996-06-25

1998-05-05

Kuntz, Curtis

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Within duct

381 717, A61F 1106, H03B 2900

Patent

active

057487499

ABSTRACT:
An active muffler noise cancellation system having an active controller, a speaker housing with acoustic compliance spaces, a duct extension in communication with said speaker housing and adapted to conform a dipole radiation pattern into a plane wave which can be measured by a microphone.

REFERENCES:
patent: 4527282 (1985-07-01), Chaplin et al.
patent: 5044464 (1991-09-01), Bremigan
Kido et al., "A New Arrangement of Additional Sound Source in an Active Noise Control System", Inter-Noise 89, Dec. 4-6 1989, pp. 483-488.

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