发明名称 |
Förfarande med identifiering tal och en tal identifieringsanordning |
摘要 |
A method for detecting pauses in speech signals is disclosed in which the frequency spectrum is divided into two or more sub-bands. Samples of the signals on the sub-bands are stored at intervals, the energy levels of the sub-bands are determined on the basis of the stored samples, a power threshold value (thr) is determined, and the energy levels of the sub-bands are compared with said power threshold value (thr) . A subband minimum is set and a detection time limit is set so that, in a noise situation, a speech pause can be verified by checking to determine if each pause detected remains for the duration of the detection time limit and if a pause is detected in at least said minimum subbands. |
申请公布号 |
FI990078(A0) |
申请公布日期 |
1999.01.18 |
申请号 |
FI19990000078 |
申请日期 |
1999.01.18 |
申请人 |
NOKIA MOBILE PHONES LTD |
发明人 |
HARIHARAN, RAMALINGAM;HAEKKINEN, JUHA;LAURILA, KARI |
分类号 |
G06F3/16;G10L11/02;G10L15/00;G10L15/04;(IPC1-7):G10L |
主分类号 |
G06F3/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|