METHOD AND DEVICE FOR ENCODING INFORMATION, METHOD AND DEVICE FOR DECODING INFORMATION, INFORMATION TRANSMITTING METHOD, AND INFORMATION RECORDING MEDIUM

摘要

Input signals are converted into frequency components, the frequency components are separated into first signals composed of tonal components and second signals composed of other components. The first and second signals are respectively encoded and code string to be transmitted or recorded is generated. For example, only the first signals are encoded, and an information substring generated for, e.g., every quantization accuracy information which has a common value and a parameter related to the encoding of the first signals is included in the code string, by using at least either, for example, the number of spectrum components constituting the tonal components which is the parameter related to the separation or, for example, quantization accuracy information which is the parameter related to the encoding of the first signals as a reference parameter. Thus, the inputted signals can be encoded more efficiently than conventional.