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1. AU2009337971 - System, method and hearing aids for in situ occlusion effect measurement

Office Australia
Application Number 2009337971
Application Date 23.01.2009
Publication Number 2009337971
Publication Date 04.08.2011
Publication Kind B2
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
Agents FB Rice Pty Ltd
Title
(EN) System, method and hearing aids for in situ occlusion effect measurement
Abstract
(EN)
A hearing aid (1) adapted for operation in a sound amplification mode and for operation in an occlusion measurement mode, said hearing aid comprising a microphone (10) adapted for transforming an acoustic sound level external to a hearing aid users ear canal (4) into a first electrical signal which is guided to an A/D converter 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 receiver (20) adapted for generating acoustic sounds in the ear canal of a user when in said amplification 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 hearing aid is in occlusion measurement mode the filter 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