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EP 0643882 A1 19950322 - PASSIVE SELECTIVE HEADSET.

Title (en)

PASSIVE SELECTIVE HEADSET.

Title (de)

SELEKTIVER PASSIVER KOPFHÖRER.

Title (fr)

CASQUE D'ECOUTE PASSIF SELECTIF.

Publication

EP 0643882 A1 19950322 (EN)

Application

EP 92913918 A 19920605

Priority

CA 2136948 A 19920605
US 9204566 W 19920605

Abstract (en)

[origin: CA2136948A1] 2136948 9326083 PCTABS00028 A passive selective headset (11) characterized in that a controller accepts speech noise and warning signals from microphones (14) and allows the user to employ an "in-wire" controller (17) or an adaptive speech filter (16) to attenuate the noise from the signal fed to the speakers (12) adjacent the user's ear.

IPC 1-7

H03B 29/00

IPC 8 full level

A61F 11/14 (2006.01); H04R 5/033 (2006.01)

CPC (source: EP)

A61F 11/145 (2022.01); H04R 1/1083 (2013.01); H04R 5/033 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE

DOCDB simple family (publication)

CA 2136948 A1 19931223; EP 0643882 A1 19950322; EP 0643882 A4 19950412

DOCDB simple family (application)

CA 2136948 A 19920605; EP 92913918 A 19920605