Acoustic resonator having mode-alignment-cancelled harmonics

Details Acoustic resonator having mode-alignment-cancelled harmonics Acoustic resonator having mode-alignment-cancelled harmonics

1994-07-22

1996-11-26

Kuntz, Curtis

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

By modifying fluid flow

381192, 62 6, H04R 2500

Patent

active

055793991

ABSTRACT:
An acoustic resonator includes a chamber which contains a fluid. The chamber has a geometry which produces self-destructive interference of at least one harmonic in the fluid to avoid shock wave formation at finite acoustic pressure amplitudes. The chamber can have reflective terminations at each end or a reflective termination at only one end. A driver mechanically oscillates the chamber at a frequency of a selected resonant mode of the chamber. The driver may be a moving piston coupled to an open end of the chamber, an electromagnetic shaker or an electromagnetic driver.

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