FIELD: radio engineering. SUBSTANCE: receiver of communication system which uses frame-based transmission of signals has source- filter voice decoder which is controlled by units which internal registers are update on frame-by-frame basis for modification of received characteristics of filter with transmission errors. In addition device has units for detection of frames with transmission errors, units for judging acceptability of frame with transmission errors, units for recovery of detected transmission errors by means of restriction of update of at least one internal register, if detected frame is judged as unacceptable. EFFECT: increased reliability of voice signal decoding, decreased sensitivity by means of recovery of transmission errors in received signal. 16 cl, 1 dwg
