EP 0694246 A1 19960131 - A METHOD AND A COUPLING FOR REDUCING THE HARMONIC DISTORTION OF A CAPACITIVE TRANSDUCER
Title (en)
A METHOD AND A COUPLING FOR REDUCING THE HARMONIC DISTORTION OF A CAPACITIVE TRANSDUCER
Title (de)
VERFAHREN UND KUPPLUNG ZUR VERMINDERUNG DER HARMONISCHEN VERZERRUNG EINES KAPAZITIVEN WANDLERS
Title (fr)
PROCEDE ET COUPLAGE POUR LA REDUCTION DE LA DISTORSION HARMONIQUE D'UN TRANSDUCTEUR CAPACITIF
Publication
Application
Priority
- DK 9400142 W 19940406
- DK 41593 A 19930407
Abstract (en)
[origin: WO9423547A1] A method and a coupling for reducing the harmonic distortion of a capacity transducer (1), such as a microphone, such as a capacitor microphone, the capacity (Ck) of which is altered in response to a sound pressure on the capacitor electrode (the membrane) by means of a negative capacity. According to the invention the negative capacity is coupled in parallel to the accoustic transducer (1) and dimensioned so as to eliminate the effect of the undesired capacities (CS) causing the distortion. In this manner the harmonic distortion of the capacity transducer (1) is reduced to a minimum.
IPC 1-7
IPC 8 full level
H04R 3/06 (2006.01); H04R 19/04 (2006.01)
CPC (source: EP)
H04R 3/06 (2013.01); H04R 19/04 (2013.01)
Citation (search report)
See references of WO 9423547A1
Designated contracting state (EPC)
AT DE FR GB IT NL
DOCDB simple family (publication)
WO 9423547 A1 19941013; AU 6534694 A 19941024; DK 170196 B1 19950606; DK 41593 A 19941008; DK 41593 D0 19930407; EP 0694246 A1 19960131; JP H08509327 A 19961001
DOCDB simple family (application)
DK 9400142 W 19940406; AU 6534694 A 19940406; DK 41593 A 19930407; EP 94913038 A 19940406; JP 52157194 A 19940406