The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 2017
Filed:
Feb. 12, 2016
Applicant:
Blackberry Limited, Waterloo, CA;
Inventor:
Tadashi Yamaura, Tokyo, JP;
Assignee:
BlackBerry Limited, Waterloo, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 19/12 (2013.01); G10L 19/135 (2013.01); G10L 19/012 (2013.01); G10L 19/107 (2013.01); G10L 19/18 (2013.01); G10L 13/02 (2013.01); G10L 19/06 (2013.01); G10L 19/083 (2013.01); G10L 19/09 (2013.01); G10L 19/125 (2013.01); G10L 21/0264 (2013.01); G10L 25/93 (2013.01); G10L 19/00 (2013.01);
U.S. Cl.
CPC ...
G10L 19/135 (2013.01); G10L 13/02 (2013.01); G10L 19/012 (2013.01); G10L 19/06 (2013.01); G10L 19/083 (2013.01); G10L 19/09 (2013.01); G10L 19/107 (2013.01); G10L 19/12 (2013.01); G10L 19/125 (2013.01); G10L 19/18 (2013.01); G10L 21/0264 (2013.01); G10L 25/93 (2013.01); G10L 2019/0002 (2013.01); G10L 2019/0011 (2013.01); G10L 2019/0012 (2013.01); G10L 2019/0016 (2013.01);
Abstract
A high quality speech is reproduced with a small data amount in speech coding and decoding for performing compression coding and decoding of a speech signal to a digital signal. In speech coding method according to a code-excited linear prediction (CELP) speech coding, a noise level of a speech in a concerning coding period is evaluated by using a code or coding result of at least one of spectrum information, power information, and pitch information, and various excitation codebooks are used based on an evaluation result.