Invention Grant
- Patent Title: Coding method, device and recording medium
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Application No.: US16782700Application Date: 2020-02-05
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Publication No.: US11037579B2Publication Date: 2021-06-15
- Inventor: Takehiro Moriya , Yutaka Kamamoto , Noboru Harada
- Applicant: Nippon Telegraph and Telephone Corporation
- Applicant Address: JP Chiyoda-ku
- Assignee: Nippon Telegraph and Telephone Corporation
- Current Assignee: Nippon Telegraph and Telephone Corporation
- Current Assignee Address: JP Chiyoda-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2014-152958 20140728
- Main IPC: G10L19/22
- IPC: G10L19/22 ; H03M7/30 ; G10L19/20 ; G10L19/00 ; G10L19/02 ; G10L19/06

Abstract:
A coding technology that efficiently codes an input sound signal irrespective of the characteristics thereof and can obtain a decoded sound signal that sounds less artificial to a listener. A coding method codes an input sound signal frame by frame of a predetermined time segment by a selected coding processing from a plurality of types of coding processing in the frequency domain, the coding method makes it possible for a selection unit to select coding processing which is different from the coding processing of the preceding frame as coding processing of the present frame if at least one of the magnitude of the energy of high frequency components of the input sound signal of the preceding frame and the magnitude of the energy of high frequency components of the input sound signal of the present frame is smaller than or equal to a predetermined threshold value.
Public/Granted literature
- US20200176006A1 CODING METHOD, DEVICE AND RECORDING MEDIUM Public/Granted day:2020-06-04
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