FIELD: information technologies.
SUBSTANCE: wideband speech coder, according to version of implementation, includes a filter bank, having a track of low frequencies band processing and track of high frequencies band processing. Tracks of processing have overlapping frequency characteristics. Narrowband speech coder is arranged with the possibility to code speech signal generated by means of low frequencies band processing track, according to the first methodology of coding. Wideband speech coder is arranged with the possibility to code speech signal generated by means of high frequencies band processing track, according to the second methodology of coding, which differs from the first methodology of coding.
EFFECT: improved quality of wideband speech signals coding.
33 cl, 58 dwg
