System and method for driving a low frequency speaker

A control circuit configured to control a speaker is disclosed. The control circuit is configured to drive the speaker at a predetermined frequency that may correspond to a resonance frequency. The control circuit comprises a speaker driver in communication with a controller. The controller is opera...

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Bibliographische Detailangaben
1. Verfasser:	Pattok Greg R
Format:	Patent
Sprache:	eng
Schlagworte:	ALARM SYSTEMS DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS ORDER TELEGRAPHS PHYSICS PUBLIC ADDRESS SYSTEMS SIGNALLING SIGNALLING OR CALLING SYSTEMS
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Beschreibung
Zusammenfassung:	A control circuit configured to control a speaker is disclosed. The control circuit is configured to drive the speaker at a predetermined frequency that may correspond to a resonance frequency. The control circuit comprises a speaker driver in communication with a controller. The controller is operable to control a drive frequency of the speaker by monitoring at least a sample of each of a plurality of wavelengths of a current draw of the speaker in the form of a voltage signal. Based on the voltage signal, the controller is operable to identify a voltage differential and adjust the drive frequency of the speaker in response to the voltage differential to maintain the predetermined frequency.