EP 2023652 A1 20090211 - Audio device and method of operating an audio device
Title (en)
Audio device and method of operating an audio device
Title (de)
Akustisches Gerät und Verfahren zum Betrieb eines akustischen Geräts
Title (fr)
Dispositif audio et procédé pour l'opération d'un dispositif audio
Publication
Application
Priority
EP 07290953 A 20070730
Abstract (en)
The present invention relates to an audio driver device (100) for converting an input signal (s1), preferably an electric input signal, to an output signal (s2) for driving an electromagnetic transducer (200). According to the present invention, said audio driver device (100) comprises filter means (110) for influencing a frequency characteristic of the input signal (s1) and/or the output signal (s2) in order to attain a predetermined frequency characteristic of a magnetic field emitted by an electromagnetic transducer (200) that is supplied with said output signal (s2).
IPC 8 full level
H03G 5/00 (2006.01); H04M 1/02 (2006.01); H04R 3/08 (2006.01); H04R 25/00 (2006.01)
CPC (source: EP)
H04R 3/08 (2013.01); H04R 25/00 (2013.01)
Citation (search report)
- [DXX] US 2005281425 A1 20051222 - GREUET JEAN-BAPTISTE [US], et al
- [X] US 2006126873 A1 20060615 - LEE CHANG-KI [KR]
- [X] DE 2259087 A1 19730614 - VIENNATONE HOERGERAETE
- [X] JP H05153684 A 19930618 - VICTOR COMPANY OF JAPAN
- [X] SI 9700157 A 19981231 - ZUPANC MILAN [SI]
Citation (examination)
- US 2006013423 A1 20060119 - WIECZOREK ALFRED B [US], et al
- US 2006025172 A1 20060202 - HAWKER LARRY E [CA], et al
- WO 2007018632 A1 20070215 - SONY ERICSSON MOBILE COMM AB [SE], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07290953 A 20070730