Headphoning

Details Headphoning Headphoning

1982-04-28

1984-06-19

Pellinen, A. D.

Electrical audio signal processing systems and devices

Headphone circuits

381 71, 381 96, 179156R, H04R 110

Patent

active

044556756

ABSTRACT:
Headphones have a small cavity between the diaphragm and the ear canal with a microphone in the cavity closely adjacent to the diaphragm providing a feedback signal that is combined with the input electrical signal to be reproduced by the headphones to provide a combined signal that is power amplified for driving the diaphragm.

REFERENCES:
patent: 4017797 (1977-04-01), Laessig
patent: 4025734 (1977-05-01), Aloupis
patent: 4087653 (1978-05-01), Frieder, Jr. et al.

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