US 11,817,077 B2
Systems and methods for noise reduction using sub-band noise reduction technique
Chengqian Zhang, Shenzhen (CN); Fengyun Liao, Shenzhen (CN); and Xin Qi, Shenzhen (CN)
Assigned to SHENZHEN SHOKZ CO., LTD., Shenzhen (CN)
Filed by SHENZHEN SHOKZ CO., LTD., Guangdong (CN)
Filed on Sep. 30, 2021, as Appl. No. 17/449,653.
Application 17/449,653 is a continuation of application No. 17/170,916, filed on Feb. 9, 2021, granted, now 11,164,556.
Application 17/170,916 is a continuation of application No. PCT/CN2019/109301, filed on Sep. 30, 2019.
Prior Publication US 2022/0020353 A1, Jan. 20, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G10K 11/178 (2006.01); G10L 21/038 (2013.01)
CPC G10K 11/17854 (2018.01) [G10K 11/17881 (2018.01); G10L 21/038 (2013.01); G10K 2210/3026 (2013.01); G10K 2210/3027 (2013.01); G10K 2210/3028 (2013.01); G10K 2210/3056 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for noise reduction, comprising:
a sub-band noise sensor including a plurality of acoustic-electric transducers and a plurality of sample modules, each of the acoustic-electric transducers having a unique frequency response and being configured to detect a noise and generate a sub-band noise electrical signal by processing the noise, each of the sampling modules being configured to receive one of the sub-band noise electrical signals and sample the received sub-band electrical signal to generate a sub-band noise signal, wherein sampling frequencies of at least two of the sampling modules are different;
a plurality of sub-band noise reduction modules, each of the sub-band noise reduction modules being configured to receive one of the sub-band noise signals from the sub-band noise sensor and generate a sub-band noise correction signal for reducing the received sub-band noise signal; and
an output module configured to receive the sub-band noise correction signals and output a noise correction signal for reducing the noise based on the sub-band noise correction signals.