US 12,231,860 B2
Measurement-based loudspeaker excursion limiting
Thomas Holm Hansen, Værløse (DK); Pawan Garg, Torrance, CA (US); Jun Honda, El Segundo, CA (US); and Niels Petersen, Frederiksberg (DK)
Assigned to Infineon Technologies Austria AG, Villach (AT)
Filed by Infineon Technologies Austria AG, Villach (AT)
Filed on May 3, 2022, as Appl. No. 17/735,218.
Prior Publication US 2023/0362541 A1, Nov. 9, 2023
Int. Cl. H04R 3/00 (2006.01); H04R 3/04 (2006.01); H04R 29/00 (2006.01)
CPC H04R 3/007 (2013.01) [H04R 3/04 (2013.01); H04R 29/001 (2013.01); H04R 2430/01 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for designing a loudspeaker excursion estimator, comprising:
measuring an excursion-related parameter for a loudspeaker, for each of a plurality of loudspeaker input signal levels and each of a plurality of loudspeaker input signal frequencies;
for each of the plurality of loudspeaker input signal frequencies and based on the measured excursion-related parameters, identifying a respective loudspeaker input signal level corresponding to the loudspeaker input signal frequency and corresponding to a target maximum excursion-related parameter value;
determining a filter response, based on the identified loudspeaker input signal levels and their respective loudspeaker input signal frequencies; and
implementing a filter, based on the determined filter response, for generating an excursion estimate based on loudspeaker input signal levels.