Control of a loudspeaker output

摘要

A control signal is generated for mechanical loudspeaker protection, or for other signal pre-processing functions. The procedure contains the following steps:
perform a non-linearity analysis based on current and voltage measurements;use the results of the non-linearity analysis, and the voltage and current measurements to control audio processing for the loudspeaker thereby to implement loudspeaker protection and/or acoustic signal processing.

主权项

1. A method of controlling a loudspeaker output, comprising:
measuring a voltage loudspeaker signal and a current loudspeaker signal; performing a non-linearity analysis to determine results based on respective values of the voltage and the current measurements and based on an excursion limit, wherein the excursion limit is a function of harmonic distortion associated with the current measurements; and using the results of the non-linearity analysis to control audio processing for the loudspeaker by implementing at least one of loudspeaker protection and acoustic signal processing wherein the controlling of audio processing includes altering a parameter that has been found to cause a non-linearity through the non-linearity analysis.