Title:
DEVICE AND METHOD FOR CELP TYPE VOICE ENCODING
Document Type and Number:
Japanese Patent JP3236853
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable a noise code book search at low calculation cost and to obtain a synthesized voice of high quality by providing a voicedness decision means which decides a voiced sound and outputting a different noise code vector by a noise code book according to a decision result of voicedness.
SOLUTION: According to the positions and polarity sign of pulses of a pulse train vector, a fixed waveform arrangement part 12 arranges (shifts) a fixed waveform V1 read out of a fixed waveform storage part 11 from a start candidate position to a selected position P1 according to and similarly arranges fixed waveforms V2 and V3 from the start candidate positions for CH2 and CH3 to selected positions P2 and P3 respectively. Then an addition part 13 adds the fixed waveforms arranged by the fixed waveform arrangement part 12 to generate a sound source vector. A soundness decision means which decides voicedness is provided and the noise code book which generates a noise code vector according to the decision result of voicedness outputs a different noise code vector.
Inventors:
Kazutoshi Yasunaga
Toshiyuki Morii
Hiroyuki Ehara
Toshiyuki Morii
Hiroyuki Ehara
Application Number:
JP2000156365A
Publication Date:
December 10, 2001
Filing Date:
February 19, 1997
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G10L19/12; G10L19/038; G10L19/10; G10L25/93; H03M7/30; H04B14/04; (IPC1-7): G10L19/12; G10L19/00; H03M7/30; H04B14/04
Domestic Patent References:
| JP2280200A | ||||
| JP2282800A | ||||
| JP6130994A | ||||
| JP6195098A |
Attorney, Agent or Firm:
Koichi Washida (3 outside)