FIELD: data processing.
SUBSTANCE: invention relates to means for coding signals. In the method, frequency-domain coding or time-domain coding is selected based on the bit-rate of the coding, which must be used to encode the digital signal, and to detect a short lag of the digital signal's pitch. Further, the detection of a short pitch lag comprises detecting whether the digital signal contains a short pitch signal, for which the pitch lag is shorter than the restriction of the pitch lag, wherein the pitch lag restriction is the minimum permissible pitch for the code excited linear prediction (CELP) algorithm for encoding a digital signal.
EFFECT: technical result is to improve the classification efficiency between time-domain coding and frequency-domain coding.
14 cl, 15 dwg
