| 摘要 |
PCT No. PCT/JP97/00097 Sec. 371 Date Sep. 12, 1997 Sec. 102(e) Date Sep. 12, 1997 PCT Filed Jan. 20, 1997 PCT Pub. No. WO97/26647 PCT Pub. Date Jul. 24, 1997The present invention can obtain a clear velocity converted sound in a sound signal which is recorded in recording media, without changing an interval of the sound signal. An input sound signal (1a) is transmitted from a sound signal storage memory (1) to a voiced sound/unvoiced sound deciding portion (2). In the voiced sound/unvoiced sound deciding portion (2), it is decided whether the input sound signal (1a) is a voiced sound or an unvoiced sound. A decision result is transmitted to a speech velocity converter (4) as a switching flag (1b). The speech velocity converter (4) outputs the unvoiced sound as it is. A predetermined windowing and adding processing is performed to the voiced sound, a time compression is carried out so as to output the voiced sound. An output signal (1e) from the speech velocity converter (4) is output as a frame output signal (1g) through an output sound signal frame buffer (8). In another mode, a switch and an adder may be used.
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