Shenzhen Synsense Technology Co., Ltd.

Huawei Technologies Co., Limited

Shenzhen Mindray Bio-medical Electronics Co., Ltd.

China Nuclear Power Engineering Company Ltd.

China General Nuclear Power Group

Cgn Power Co., Ltd.

Peng Zhou

Jun Wang

Hao Liu

Chuanfen Xie

Ning Qiao

Huaqiu Zhang

Dylan Richard Muir

Saeid Haghighatshoar

Chaolian Li

Xiaolong Liang

Mingyang Li

Guoyong Ou

Hai Wang

A divisive normalization method, device, audio feature extractor, and a chip are disclosed. For improving the robustness against variations of the background noise, the proposed per-channel divisive normalization method comprises: obtaining an average number of input spikes over an averaging window by a low-pass filter to produce a threshold parameter, then deciding whether to enable an integrate-and fire (IAF) counter counting over a clock period of a divisive normalization module, when the count value of IAF counter reaches the threshold, resetting IAF counter and producing a single spike at the output. Compared with the prior art, the proposed method does not require any Linear Feedback Shift Register (LFSR) and is easier to implement. It also has a simpler structure, higher accuracy and better statistical performance, and a lower cost and a lower power consumption.

Divisive normalization method, device, audio feature extractor and a chip

Growing community of inventors

Guangdong, China

Peng Zhou