EP 0910225 A3 20000315 - Microphone arrangement for helmet,and helmet with such an arrangement
Title (en)
Microphone arrangement for helmet,and helmet with such an arrangement
Title (de)
Mikrofonanordnung für Schutzhelm,und Schutzhelm mit einer derartigen Anordnung
Title (fr)
Dispositif de microphone pour casque, et casque équipé d'un tel dispositif
Publication
Application
Priority
FR 9713057 A 19971017
Abstract (en)
[origin: EP0910225A2] The transducer detects road and wind noise and uses the filtered response to adjust the gain control of the microphone amplifier.
IPC 1-7
IPC 8 full level
H04R 1/08 (2006.01)
CPC (source: EP)
H04R 1/083 (2013.01)
Citation (search report)
- [XA] US 5243659 A 19930907 - STAFFORD LARRY E [US], et al
- [XA] DE 3509658 A1 19860918 - DRAEGERWERK AG [DE]
- [A] EP 0521218 A1 19930107 - SHOEI KAKO KK [JP]
- [A] GB 2182568 A 19870520 - TOTAL INERT MAINTENANCE & ENGI
- [A] FR 2384422 A2 19781013 - LUC BERNARD [FR]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0910225 A2 19990421; EP 0910225 A3 20000315; FR 2770075 A1 19990423; FR 2770075 B1 20001222
DOCDB simple family (application)
EP 98402575 A 19981016; FR 9713057 A 19971017