1. A method for decoding error-correcting code is concatenated to the most significant symbols of the outer code, wherein the first decoded inner code concatenated code with error detection and correction in decoding the inner code obtained outer code symbols and simultaneously for each of the symbols of the outer code take a "soft" decision their reliability, and the decision about the reliability of the symbols of the outer code depends on the number of errors detected and corrected in the decoding of the inner code, and a more authentic GOVERNMENTAL will symbols which was not detected and corrected any errors following on reliability will code from the detection and correction of a single error, then - a double and so on, and then obtained by decoding the internal code, the outer code symbols are sorted by authenticity, wherein first select the most reliable symbols, which was not detected and corrected any errors, then an error code from the audio and so on as long as there is no K + K1≤N scored most reliable symbols external ode where N - Block Length outer code, K - information length of an outer code, and K1 - the length of the parity part of the external code used when decoding for error detection and correction, then the outer code is decoded with error correction and erasure and restore the original information, characterized in that after decoding the outer code again restored original information is encoded with an outer code and an external code symbols are obtained that are compared with corresponding received NK-K1 least reliable symbols
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