Untitled record

CODING DEVICE AND CODING METHOD. The present invention relates to a speech encoding device which can accurately encode a spectrum form of a signal having a strong pitch such as a vowel. The device includes: a subband making unit (151) which divides an error conversion coefficient of the first layer to be encoded into M subbands so as to generate M subband conversion coefficients; a shape vector coding unit (152) which performs coding on each of the M subband conversion coefficients to obtain M shape coded information and calculates a target gain of each of the M shape coefficients sub-band conversion; a gain vector forming unit (153) which forms a gain vector (154) which encodes the gain vector so as to obtain the gain encoded information; and a multiplexing section unit (155) which multiplexes the shape encoded information with the gain encoded information.