PURPOSE: To obtain a voice coding device and its method which reduce the consumption of computer resources and encode utterance through the use of a sorting rule.
CONSTITUTION: The value of at least one feature of voice is measured during consecutive time intervals to generate a series of feature vector signals. Corresponding to the sorting rule, a feature vector signal is mapped accurately to one of at least two different classes of prototype vector signals from a set of the possible feature vector signals. Each class includes plural prototype vector signals. According to this sorting rule, a first feature vector signal is mapped to the first class of the prototype vector signal. Sets of equality between of the feature value of the first feature vector signal and a parameter value of only the prototype vector signal included in the first class are compared to obtain a prototype coinciding score. The identification value of the prototype vector signal with at least optimum prototype coincident score is outputted as a voice expression signal obtained by encoding the first feature vector signal at least.
PONANI ESU GOPARAKURISHIYUNAN
DEBITSUDO NAHAMOO
MAIKERU ARAN PIKENII
JIYAN SEDEIBII
| JPH04248722A | 1992-09-04 | |||
| JPH0490217A | 1992-03-24 | |||
| JPH03211600A | 1991-09-17 | |||
| JPH01319799A | 1989-12-26 |