Nonlinear port parameters for vented box modeling of loudspeakers
AssigneeHarman International Industries, Incorporated
InventorsRussell H. Lambert, Douglas J. Button
Life of this patent
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Abstract
A loudspeaker parameter system for vented box driver excursion modeling, may include a loudspeaker driver having a conductor, a magnet and a diaphragm. The system may further include a processor for excursion modeling configured to receive an input signal, determine a voltage level of the input signal, an enclosure having a resonant port, estimate port parameters including at least one of an acoustic resistance or acoustic mass, and apply a voltage limit based on the vented box excursion model utilizing the port parameters.
Claims18
A loudspeaker parameter system for vented box excursion modeling, comprising:
- a loudspeaker driver having a conductor, a magnet and a diaphragm;
- a processor for excursion modeling configured to:
- receive an input signal,
- determine a voltage level of the input signal based on an envelope detector,
- an enclosure having a resonant port,
- estimate port parameters including at least one of an acoustic resistance or acoustic mass, and
- apply a voltage limit based on the vented box excursion model utilizing the port parameters.
A method for modeling parameters of a vented box loudspeaker, comprising:
- receiving an input signal,
- determining a voltage level of the input signal,
- interpolating port parameters including at least one of an acoustic resistance and acoustic mass, and
- applying a voltage limit based on the port parameters.
A loudspeaker parameter system, comprising:
- a loudspeaker having a transducer and a diaphragm;
- a processor for excursion modeling configured to:
- receive an input signal,
- determine the voltage level of the input signal,
- interpolate port parameters including an acoustic resistance and acoustic mass, and
- apply a voltage limit to limit excursion based on the port parameters.
A loudspeaker parameter system for vented box driver excursion modeling, comprising:
- a loudspeaker driver having a coil, a magnet and a diaphragm;
- a processor for excursion modeling configured to:
- receive an input signal,
- determine a voltage input of the input signal,
- estimate port parameters including an acoustic resistance and acoustic mass based on a look-up table, and
- apply a voltage limit based on the vented box excursion model utilizing the nonlinear port parameters.
Dependencies are inferred from the claim text.