Apparatus and method for data compression.

A digital compression input signal generating compressing apparatus and method for digital output signal, the device comprises: A device, and further multiple spectrum coefficients from the number of the input signal and is divided into the inverted with which the frequency range value and frequency band frequency multiple frequency bands; An adaptive of distribution device, a assigns the frequency bands self-adaptive provided with a signal related quantization position, wherein assigns to the frequency ranges are in each spectrum coefficient for quantization frequency band with a signal related quantization position, assigns to the frequency bands with a signal related quantization of quantity of the frequency band value and pressing frequency band frequency weighting is processed.