Invention Grant
- Patent Title: Method of controlling diaphragm excursion of electrodynamic loudspeakers
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Application No.: US14569182Application Date: 2014-12-12
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Publication No.: US09813812B2Publication Date: 2017-11-07
- Inventor: Kim Spetzler Berthelsen , Miguel Alejandro Chavez Salas , Kasper Strange
- Applicant: Analog Devices Global
- Applicant Address: BM Hamilton
- Assignee: Analog Devices Global
- Current Assignee: Analog Devices Global
- Current Assignee Address: BM Hamilton
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H03G11/00
- IPC: H03G11/00 ; H04R3/00 ; H03G9/00 ; H03G9/02 ; H04R29/00

Abstract:
The present application relates in one aspect to a method of controlling diaphragm excursion of an electrodynamic loudspeaker. The method comprises dividing the audio input signal into at least a low-frequency band signal and a high-frequency band signal by a band-splitting network and applying the low-frequency band signal to a diaphragm excursion estimator. The instantaneous diaphragm excursion is determined based on the low-frequency band signal. The determined instantaneous diaphragm excursion is compared with an excursion limit criterion. The low-frequency band signal is limited based on a result of the comparison between the instantaneous diaphragm excursion and the excursion limit criterion to produce a limited low-frequency band signal which is combined with the high-frequency band signal to produce an excursion limited audio signal.
Public/Granted literature
- US20160173983A1 METHOD OF CONTROLLING DIAPHRAGM EXCURSION OF ELECTRODYNAMIC LOUDSPEAKERS Public/Granted day:2016-06-16
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