Directional microphone with high frequency selective acoustic le

Details Directional microphone with high frequency selective acoustic le Directional microphone with high frequency selective acoustic le

1981-05-29

1983-08-30

Rubinson, G. Z.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181176, 181158, 179138, H04R 132

Patent

active

044018592

ABSTRACT:
A unidirectional dynamic microphone provided with a first sound path to the forward side of the diaphragm and a second sound path to the rear side of the diaphragm, a Helmholtz resonator disposed in the first sound path having a sound entrance, and a diffraction lens mounted ahead of the Helmholtz resonator and partially shadowing the sound entrance to the Helmholtz resonator for the purpose of increasing the high frequency response of the microphone.

REFERENCES:
patent: 3201516 (1965-08-01), Weingartner
patent: 3573400 (1971-04-01), Sessler
patent: 3908095 (1975-10-01), Jinsenji

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