| 摘要 |
FIELD: information technology. ^ SUBSTANCE: region of disclosed configurations includes methods in which speech signal subbands are separately coded, wherein the first subband is excited from the second subband. Amplification coefficients are calculated in order to indicate the time-varying relationship between envelope curves of the first subband and the synthesized first subband. Amplification coefficients are quantised, and quantised values which exceed pre-quantised values are repeatedly coded. ^ EFFECT: high efficiency and improved quality of coding wideband speech signals. ^ 64 cl, 39 dwg |
