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1. CA2750445 - A SYSTEM, METHOD AND HEARING AIDS FOR IN SITU OCCLUSION EFFECT MEASUREMENT

Office Canada
Application Number 2750445
Application Date 23.01.2009
Publication Number 2750445
Publication Date 29.07.2010
Publication Kind A1
IPC
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
25
Deaf-aid sets
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
29
Monitoring arrangements; Testing arrangements
H04R 25/00
H04R 29/00
CPC
H04R 25/70
H04R 2400/01
H04R 2430/03
H04R 2460/05
Applicants WIDEX A/S
Title
(EN) A SYSTEM, METHOD AND HEARING AIDS FOR IN SITU OCCLUSION EFFECT MEASUREMENT
(FR) SYSTEME, PROCEDE ET PROTHESE AUDITIVE POUR MESURE D'UN EFFET D'OCCLUSION IN SITU
Abstract
(EN)



A hearing aid (1) adapted for
oper-ation in a sound amplification mode and for
oper-ation in an occlusion measurement mode, said
hearing aid comprising a microphone (10)
adapt-ed for transforming an acoustic sound level
exter-nal to a hearing aid users ear canal (4) into a first
electrical signal which is guided to an A/D
con-verter forming a first digitized electrical signal.
The hearing aid comprise signal processing means
with a filter bank (41, 42) with means for splitting
an electrical signal into frequency bands,and a
re-ceiver (20) adapted for generating acoustic sounds
in the ear canal of a user when in said
amplifica-tion mode, and adapted for transforming the
acoustic sound level in the ear canal into a second
electrical signal, and further comprising means for
directing the second electrical signal obtained by
the receiver to an A/D converter (34) forming a
second digitized electrical signal. When the
hear-ing aid is in occlusion measurement mode the
fil-ter bank can split the first and the second digitized
electrical signals into a first and a second band
split digitized electrical signals, respectively. The
invention also provides a system and a method for
measuring the occlusion effect