Lautsprecherwärmeregelung mit Statusbeobachtung

Details

Veröffentlichungs-Nr.

EP2806656

Aktenzeichen

EP13368015

Anmeldetag

21. Mai 2013

Veröffentlichung

13. April 2016

Erteilung

13. April 2016

Rechtsraum

EP

IPC

H04R3/00

Abstract

An Active Heat Controller (10) for controlling the temperature of a loudspeaker (12) connected to it, the Active Heat Controller (10) comprising a Dynamic Range Controller (14) operatively interposed, in use, between an input driving signal terminal (16) for the loudspeaker (12) and the terminals (26) of a voice-coil of the loudspeaker (12), the Dynamic Range Controller (14) being configured to variabty attenuate the input driving signal as output at the voice-coil's terminals (20), the Active Heat Controller (10) comprising: a probe (28) operatively connected, and for applying a probe signal, to the terminals (26) of the loudspeaker's voice-coil (12) for estimating an instantaneous temperature of the voice-coil and being characterised by: a state observer (40) for estimating an instantaneous temperature of a magnet of the loudspeaker (12); and means (38) for controlling the instantaneous attenuation of the Dynamic Range Controller (14) in response to the estimated voice-coil and magnet temperatures.

Anmelder

Firma

ST-Ericsson SA

Land

🇨🇭 Schweiz

Fachgebiete