Patent ID: 6947569

Claim:
An audio signal processing device for performing virtual acoustic image localization processing such that an acoustic image is localized at an arbitrary position in a vicinity of a listener, by reproducing by one of headphones and a plurality of speakers, output signals resulting from signal processing of input audio signals, the device comprising: digital signal processing means for performing virtual acoustic image localization processing of said input audio signals; a sensor for detecting a state of motion of the listener; an A/D converter for converting into digital signals the analog detection signals from said sensor; and control means for performing control so as to change and output in realtime transmission characteristics of said digital signal processing means, according to output signals from said A/D converter, wherein at least part of said A/D converter is formed as part of said digital signal processing means wherein said A/D converter consists of a one-bit A/D converter which converts input analog signals into one-bit digital signals.