| US 7,593,847 B2 | ||
| Pitch detection method and apparatus | ||
| Kwangcheol Oh, Gyeonggi-do (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., Suwon-Si (Korea, Republic of) | ||
| Filed on Oct. 21, 2004, as Appl. No. 10/968,942. | ||
| Claims priority of application No. 10-2003-0074923 (KR), filed on Oct. 25, 2003. | ||
| Prior Publication US 2005/0091045 A1, Apr. 28, 2005 | ||
| Int. Cl. G10L 11/04 (2006.01); G10L 19/00 (2006.01) | ||
| U.S. Cl. 704—207 [704/218; 704/219] | 24 Claims |
| 1. A pitch detection method comprising:
decomposing voice data rearranged on a basis of a central peak in a single frame into even-number symmetrical components;
detecting candidate pitches from the even-number symmetrical components; and
determining a location of a candidate pitch corresponding to a maximum segment correlation value among segment correlation
values between a reference point and each of the detected candidate pitches in relation to the even-number symmetrical components,
as a pitch period,
wherein the method is performed by at least one computer system.
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