Sound image localization apparatus

Details Sound image localization apparatus Sound image localization apparatus

2011-08-23

2011-08-23

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Stereo speaker arrangement

C381S017000

Reexamination Certificate

active

08005245

ABSTRACT:
It is an object of the present invention to provide a sound image localization apparatus which can localize a sound image with ease correctly for many listeners.Herein disclosed is a sound image localization apparatus, in which a directional band information storage unit11is adapted to store therein directional bands in advance calculated for respective directions, a control filter computing unit12is adapted to read a directional band corresponding to a target position information from a directional band information storage unit11upon receiving target position information, calculate a control filter coefficient in such a manner that the maximum value of a sensation level for which masking is taken into consideration is matched with the directional band thus read, output the control filter coefficient to a sound image localization processing unit13. Upon receiving the control filter coefficient from the control filter computing unit12, the sound image localization processing unit13is adapted to convolve the control filter coefficient thus received to an inputted sound source signal, carry out sound image localization processing on the sound source signal, and output a sound signal whose sound image has been localized as a sound image localization signal to a sound reproducing device, not shown, such as, for example, headphones, a speaker, and/or the like.

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