EP 0246970 B1 19901219 - HEARING AID DEVICES
Title (en)
HEARING AID DEVICES
Publication
Application
Priority
FR 8607408 A 19860523
Abstract (en)
[origin: US4843623A] The invention relates to a hearing aid device in which the slices (s1, x2) of the electrical signal corresponding to each acoustic signal comprised respectively between 1500 and 3500 Hz and between 5000 and 7000 Hz, are transposed into compensation signals (S1, S2) comprised within two coupled ranges of separate low frequencies above the range 60 to 800 Hz, alone preserved without compensation. To preserve the timbres of the transposed sounds, the compensation signals are obtained by multiplying each slice (x1, x2) by itself or by a signal (x'1, x'2) deduced from this slice by amplitude equalization.
IPC 1-7
IPC 8 full level
H04R 25/00 (2006.01)
CPC (source: EP US)
H04R 25/353 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE GB IT LI NL
DOCDB simple family (publication)
EP 0246970 A1 19871125; EP 0246970 B1 19901219; AT E59260 T1 19910115; DE 3766755 D1 19910131; FR 2598909 A1 19871127; FR 2598909 B1 19880826; US 4843623 A 19890627
DOCDB simple family (application)
EP 87401130 A 19870520; AT 87401130 T 19870520; DE 3766755 T 19870520; FR 8607408 A 19860523; US 5329887 A 19870522