EP 1174003 A1 20020123 - PROGRAMMABLE MULTI-MODE, MULTI-MICROPHONE SYSTEM
Title (en)
PROGRAMMABLE MULTI-MODE, MULTI-MICROPHONE SYSTEM
Title (de)
PROGRAMMIERBARES MULTI-MODE, MULTI-MIKROFON SYSTEM
Title (fr)
SYST ME PROGRAMMABLE MULTIMODE PLUSIEURS MICROPHONES
Publication
Application
Priority
- CA 0000463 W 20000427
- US 13147199 P 19990428
Abstract (en)
[origin: WO0065873A1] A multi-mode, multi-microphone system for use with a hearing aid or amplification device has two omni-directional microphones. The system includes programmable circuitry including programmable resistors and can operate in a two microphone omni-directional mode, a two microphone directional mode, a single microphone directional mode, a low frequency equalized two microphone directional mode, a telecoil input mode, and a mixed microphone input and telecoil input mode. Any number of these modes may be preprogrammed and stored by the system so that a user can select a desired mode, as required. Advantageously, the system allows the amount of equalization in the low frequency equalized two microphone directional mode and the amount of telecoil input mixing in the mixed telecoil and microphone mode to be programmably variable quantities. As a result, numerous variants of these modes are possible and may be selected as desired by a manufacturer, dispenser, or user. The microphone system is calibrated by adjusting programmable resistors so that the sensitivity of each omni-directional microphone is matched in all two microphone modes and so that a desired directional response is obtained in the two microphone directional mode for any given spacing between the omni-directional microphones.
IPC 1-7
IPC 8 full level
H04R 25/00 (2006.01); H04R 29/00 (2006.01)
CPC (source: EP)
H04R 25/407 (2013.01); H04R 25/502 (2013.01); H04R 29/006 (2013.01)
Citation (search report)
See references of WO 0065873A1
Designated contracting state (EPC)
CH DE DK FR GB LI NL
DOCDB simple family (publication)
WO 0065873 A1 20001102; AU 4279800 A 20001110; DE 60012316 D1 20040826; DE 60012316 T2 20050721; DK 1174003 T3 20040830; EP 1174003 A1 20020123; EP 1174003 B1 20040721
DOCDB simple family (application)
CA 0000463 W 20000427; AU 4279800 A 20000427; DE 60012316 T 20000427; DK 00922369 T 20000427; EP 00922369 A 20000427