ENERGY LOSSLESS-ENCODING METHOD AND APPARATUS, AUDIO ENCODING METHOD AND APPARATUS, ENERGY LOSSLESS-DECODING METHOD AND APPARATUS, AND AUDIO DECODING METHOD AND APPARATUS

摘要

A lossless encoding method is provided that includes determining a lossless encoding mode of a quantization coefficient as one of an infinite-range lossless encoding mode and a finite-range lossless encoding mode; encoding the quantization coefficient in the infinite-range lossless encoding mode in correspondence with a result of the lossless encoding mode determination; and encoding the quantization coefficient in the finite-range lossless encoding mode in correspondence with a result of the lossless encoding mode determination.

主权项

1. A method of coding an envelope, the method comprising:
selecting one of a first coding method and a second coding method for a quantization index of the envelope, based on a range in which the quantization index is represented; and encoding, performed by at least one processor, the quantization index using the selected coding method, wherein in the second coding method, the encoding is separately performed on upper bits and at least one lower bit of bits representing the quantization index.