Invention Grant
- Patent Title: Very short pitch detection and coding
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Application No.: US16668956Application Date: 2019-10-30
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Publication No.: US11270716B2Publication Date: 2022-03-08
- Inventor: Yang Gao , Fengyan Qi
- Applicant: Huawei Technologies Co., Ltd.
- Applicant Address: CN Shenzhen
- Assignee: Huawei Technologies Co., Ltd.
- Current Assignee: Huawei Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Conley Rose, P.C.
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L21/003 ; G10L25/21 ; G10L25/06 ; G10L25/90 ; G10L19/09

Abstract:
A system and method are provided for very short pitch detection and coding for speech or audio signals. The system and method include detecting whether there is a very short pitch lag in a speech or audio signal that is shorter than a conventional minimum pitch limitation using a combination of time domain and frequency domain pitch detection techniques. The pitch detection techniques include using pitch correlations in time domain and detecting a lack of low frequency energy in the speech or audio signal in frequency domain. The detected very short pitch lag is coded using a pitch range from a predetermined minimum very short pitch limitation.
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