US 12,190,855 B2
Active noise reduction with impulse detection and suppression
Emery M. Ku, Somerville, MA (US)
Assigned to Bose Corporation, Framingham, MA (US)
Filed by Bose Corporation, Framingham, MA (US)
Filed on Sep. 6, 2022, as Appl. No. 17/929,919.
Prior Publication US 2024/0078995 A1, Mar. 7, 2024
Int. Cl. G10K 11/16 (2006.01); G10K 11/178 (2006.01); H04R 1/10 (2006.01)
CPC G10K 11/17854 (2018.01) [G10K 11/17823 (2018.01); G10K 11/17827 (2018.01); G10K 11/1783 (2018.01); G10K 11/17881 (2018.01); H04R 1/1083 (2013.01); G10K 11/17825 (2018.01); G10K 2210/1081 (2013.01); G10K 2210/3023 (2013.01); G10K 2210/3026 (2013.01); G10K 2210/3027 (2013.01); G10K 2210/3028 (2013.01); H04R 2460/01 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An apparatus comprising:
A noise reduction headphone comprising one or more microphones and an acoustic transducer, the one or more microphones configured to generate an input signal based on captured ambient sounds; and
a controller comprising one or more processing devices, the controller configured to:
process the input signal through one or more noise reduction filters to generate a noise-reduction signal, wherein the noise-reduction signal is configured to reduce an effect of the input signal;
compare the input signal to an estimate of ambient noise to determine if an energy of the input signal is greater than the estimate of ambient noise, wherein if the energy of the input signal is greater than the estimate of ambient noise by a predetermined amount, a change in the noise-reduction signal is suppressed; and
generate an output signal, the output signal comprising, at least in part, the noise-reduction signal, wherein the acoustic transducer is configured to produce an acoustic output in accordance with the output signal.