Title:
HIGH-DEGREE BIOLOGICAL SIMULATION-BASED VOICE PROCESSING FILTER AND VOICE RECOGNITION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/047134
Kind Code:
A1
Abstract:
A high-degree biological simulation-based voice processing filter, said filter being a nine-stage filter formed by cascading a band pass filter unit (10), a low-pass filter unit (20) and an elliptic low-pass filter unit (30) in sequence, the center frequency of the nine-stage filter being adjusted by means of the low pass filter unit (20). In this way, by combining the frequency response characteristics of a biological cochlea, the sound response curve near a particular center frequency can be subdivided into a gentler passive segment, a selective active segment, and a cut-off segment having an abrupt change; in the gentler passive segment, the band pass filter unit (10) is used for processing; in the selective active segment, the low pass filter unit (20) is used for processing, and in the cut-off segment having an abrupt change, the elliptic low pass filter unit (30) is used for processing, thereby realizing voice processing having high biological simulation and low power consumption.
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Inventors:
ZHANG JINYONG (CN)
WANG LEI (CN)
WANG LEI (CN)
Application Number:
PCT/CN2017/100975
Publication Date:
March 14, 2019
Filing Date:
September 08, 2017
Export Citation:
Assignee:
SHENZHEN INST OF ADV TECH CAS (CN)
International Classes:
G10L21/0208; H03H17/00; H03H17/02
Foreign References:
| CN107799122A | 2018-03-13 | |||
| CN101656079A | 2010-02-24 | |||
| CN2105140U | 1992-05-20 | |||
| JP2002156997A | 2002-05-31 | |||
| JP2005128132A | 2005-05-19 |
Attorney, Agent or Firm:
SHENZHEN YOUTH PATENT AND TRADEMARK AGENCY LTD. (CN)
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