Method and apparatus for simulating outer ear free field transfe

Details Method and apparatus for simulating outer ear free field transfe Method and apparatus for simulating outer ear free field transfe

1985-03-25

1987-06-09

Broome, Harold

Boots, shoes, and leggings

381 57, 381 68, 364806, G06G 748, H03G 320, H04R 2500

Patent

active

046725695

ABSTRACT:
An electroacoustic simulation method and apparatus for imitating electroastically the human outer ear having transmission properties corresponding to those of the human outer ear when exposed to sound in the free field is proposed, wherein the physical acoustical causes of the outer ear, the head, the upper part of the body, the pinna rim, and the like, are represented mathematically by simple partial models and approximated in the form of electric circuits containing circuit elements such as high-pass filters, low-pass filters, all-pass filters . . . and the like, with the possibility to vary certain properties of the circuit elements continuously by varying the parameters so that arbitrary directions of sound incidence can be adjusted infinitely in the horizontal and median planes.

REFERENCES:
patent: 3432618 (1969-03-01), Stewart
patent: 3570143 (1968-11-01), Paine
patent: 4517415 (1985-05-01), Laurence
patent: 4581758 (1986-04-01), Coker

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