Patent ID: 6366545
Filing Date: 2002-04-02
Classification: G11B

Abstract:
A recording apparatus comprising:MDCT means for processing an inputted digital signal on a time axis in a MDCT fashion to provide spectrum data on a frequency axis; scale factor calculating means for calculating a scale factor of every divided band for normalization by band-dividing said spectrum data on the frequency axis; data compressing means for providing compressed data including a scale factor of every divided band and spectrum data by compressing the spectrum data on said frequency axis calculated by said scale factor calculating means; computation means for receiving compressed digital data including the scale factor of said every divided band and spectrum data from said data compressing means and effecting a computation for changing acoustic characteristics of said compressed digital data on the scale factor of said every divided band; and recording means for recording said compressed digital data in which acoustic characteristics are changed when said computation means computes the scale factor of said every band on a recording medium.