Active foam for noise and vibration control

Details Active foam for noise and vibration control Active foam for noise and vibration control

1995-12-07

1998-02-17

Kuntz, Curtis

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Acoustic, nonairborne vibration sensing or counterwave emission

A61F 1106

Patent

active

057199450

ABSTRACT:
An active foam system for noise and vibration control which employs embedded PVDF layers (12) in a urethane foam pad (13). The system can be used to isolate and/or attenuate vibration. It can also be used to cause a reduction in far-field acoustic pressure and to act as a structurally radiated speaker (130).

REFERENCES:
patent: 4056742 (1977-11-01), Tibbetts
patent: 4322877 (1982-04-01), Taylor
patent: 4565940 (1986-01-01), Hubbard, Jr.
patent: 4954781 (1990-09-01), Hirata
patent: 5091953 (1992-02-01), Tretter
patent: 5115472 (1992-05-01), Park et al.
patent: 5142511 (1992-08-01), Kanai et al.

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