UDC 621.395
ADAPTIVE CODING ALGORITHM BASED ON CELP CODEC AND MODIFICATION OF THE KHURGIN – YAKOVLEV ALGORITHM
V. T. Dmitriev, Doctor in Technical Sciences, department of radio control and communication, Head of the department, RSREU, Ryazan, Russia;
orcid.org/0000-0001-5521-6886, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
S. Yu. Lantratov, student RSREU, Ryazan, Russia;
orcid.org/0009-0004-7428-5296, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
An algorithm for encoding speech signals based on CELP codec and modification of the Khurgin – Yakovlev algorithm adaptive to distortions in a communication channel has been developed and studied. The aim of the work is to develop and study an algorithm for adapting CELP codec to the effects of distortion in a communication channel. In this work, this aim is achieved by selecting separate sets of CELP codec parameters, which when exposed to distortion in a communication channel provide higher quality of speech signals at codec output. The study of the influence of the parameters on speech quality at the output of CELP codec based on V.A. Kotelnikov theorem and Khurgin – Yakovlev representations has been conducted.
Key words: : speech signal, noise immunity, adaptive codec, primary encoding, speech signals transmission, speech signals codecs, Khurgin – Yakovlev representation, speech quality, CELP codec.