Microphone with frequency pre-emphasis

Details Microphone with frequency pre-emphasis Microphone with frequency pre-emphasis

1987-12-04

1989-03-28

Fuller, B. R.

Acoustics

Diaphragm

Microphone type

181129, 181130, 181163, 181166, 381 686, 381 69, 381158, 381159, 381182, G10K 1300, H04R 102, H04R 2500

Patent

active

048155608

ABSTRACT:
A stepped frequency microphone particularly adapted to a hearing aid application provides a stepped frequency response characteristic relative to frequency, and has a low-pass sonic attenuator for providing to the undriven side of the microphone diaphragm a sonic counterpressure which at low frequencies substantially cancels ambient sound pressure delivered to the drive side of the diaphragm, the attenuator reducing this counterpressure at elevated frequencies to provide accentuated high frequency response.

REFERENCES:
patent: 3963881 (1976-06-01), Fraim et al.
patent: 4063050 (1977-12-01), Carlson et al.
patent: 4450930 (1984-05-01), Killion
patent: 4504703 (1985-03-01), Schneiter et al.

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