METHOD AND APPARATUS FOR ENCODING FREQUENCY, AND METHOD AND APPARATUS FOR DECODING FREQUENCY

摘要

This invention relates to a method and an apparatus for encoding and decoding a frequency of a continuation sinusoidal signal. A continuation sinusoidal signal is extracted. The continuation sinusoidal signal is a sinusoidal signal of a current section linked to a sinusoidal signal of a previous section. The frequency of the continuation sinusoidal signal is converted into a first frequency at the boundary between the current and previous sections based on the representative frequencies of both the continuation sinusoidal signal and at least one sinusoidal signal. At least one sinusoidal signal belongs to a section adjacent to the current section and is linked to the continuation sinusoidal signal. After the conversion of the continuation sinusoidal signal the first frequency is encoded. Therefore, the number of bits used in the encoding can be reduced.