SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND ACOUSTIC REPRODUCTION SYSTEM, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a signal processing device for reducing distortion in vibration in a piezoelectric vibrator.SOLUTION: A signal processing device 1 for momently outputting discrete voltage signals composed of a plurality of pieces of voltage data to make a piezoelectric vibrator generate vibrations corresponding to the discrete voltage signals comprises a vibration amplitude calculation unit 12 for calculating discrete amplitude signals composed of a plurality of pieces of amplitude data corresponding to first discrete voltage signals input from a signal output unit 10 on the basis of the first discrete voltage signals. The vibration amplitude calculation unit 12 performs predetermined compression and conversion processing determined depending on the discrete amplitude signals on the first discrete voltage signals and outputting the discrete amplitude signals to a compressor for momently outputting second discrete voltage signals obtained by performing the compression and conversion processing.