US 12,436,733 B2
Ambient sound level control
Philipp Merz, Graz (AT); and Knud-Erik Lauridsen, Herning (DK)
Assigned to Bang & Olufsen A/S, Struer (DK)
Filed by BANG & OLUFSEN A/S, Struer (DK)
Filed on May 24, 2023, as Appl. No. 18/322,784.
Claims priority of application No. 2023 00217 (DK), filed on Mar. 10, 2023.
Prior Publication US 2024/0303031 A1, Sep. 12, 2024
Int. Cl. G06F 3/16 (2006.01); H04R 1/10 (2006.01)
CPC G06F 3/165 (2013.01) [H04R 1/1008 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A wearable audio device comprising:
at least one speaker to provide an initial audio output signal;
at least one sensor arranged to:
sense at least one characteristic of the initial audio output signal,
sense noise external to the wearable audio device, and
provide at least one sensor signal related to at least one characteristic of the sensed initial audio output signal and at least one characteristic of the sensed noise;
at least one input arranged to accept an input related to a desired level of attenuation of the noise;
a processor arranged to:
receive the at least one sensor signal and the selected desired level of attenuation,
select at least one coefficient from a coefficient table based on the at least one sensor signal or the selected desired level of attenuation, and
provide an attenuation signal related to the selected at least one coefficient; and
at least one filter arranged to receive the attenuation signal from the processor and produce a filtered audio signal based on the attenuation signal,
wherein the at least one speaker is configured to provide an attenuated audio output based on the filtered audio signal.