EP 4101179 A1 20221214 - SOUND CONVERSION DEVICE WITH AN ACOUSTIC FILTER
Title (en)
SOUND CONVERSION DEVICE WITH AN ACOUSTIC FILTER
Title (de)
VORRICHTUNG ZUR SCHALLWANDLUNG MIT EINEM AKUSTISCHEN FILTER
Title (fr)
DISPOSITIF DE CONVERSION DE SON À FILTRE ACOUSTIQUE
Publication
Application
Priority
- DE 102020201533 A 20200207
- EP 2021052648 W 20210204
Abstract (en)
[origin: WO2021156357A1] The invention relates to a sound conversion device, said device comprising a sound channel and a sound transducer coupled to the sound channel, also comprising a low-pass acoustic filter disposed in the sound channel.
IPC 8 full level
H04R 1/28 (2006.01); H04R 1/10 (2006.01); H04R 25/00 (2006.01)
CPC (source: EP KR US)
G10K 11/04 (2013.01 - US); G10K 11/18 (2013.01 - US); H04R 1/10 (2013.01 - US); H04R 1/1016 (2013.01 - EP KR); H04R 1/2803 (2013.01 - EP KR); H04R 1/2853 (2013.01 - US); H04R 25/48 (2013.01 - EP KR)
Citation (search report)
See references of WO 2021156357A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102020201533 A1 20210812; EP 4101179 A1 20221214; JP 2023513170 A 20230330; KR 20220140767 A 20221018; US 2022377454 A1 20221124; WO 2021156357 A1 20210812
DOCDB simple family (application)
DE 102020201533 A 20200207; EP 2021052648 W 20210204; EP 21703669 A 20210204; JP 2022547827 A 20210204; KR 20227030504 A 20210204; US 202217880910 A 20220804