Title:
APPARATUS AND METHOD FOR THREE- DIMENSIONAL AUDITORY SENSE DISPLAY UTILIZING BIOTECHNOLOGICAL EMULATION WITH INTENSIFIED SOUND NORMAL OF TWO HUMAN EARS
Document Type and Number:
Japanese Patent JPS63224600
Kind Code:
A
Abstract:
An artificial, three dimensional auditory display which artificially imparts localization cues to a multifrequency component, electronic signal which corresponds to a sound source. The cues imparted are a front to back cue in the form of attenuation and boosting of certain frequency components of the signal, an elevational cue in the form of severe attenuation of a selected frequency component, i.e. variable notch filtering, an azimuth cue by means of splitting the signal into two signals and delaying one of them by a selected amount which is not greater than .67 milliseconds, an out of head localization cue by introducing delayed signals corresponding to early reflections of the original signal, an environment cue by introducing reverberations and a depth cue by selectively amplitude scaling the primary signal and the early reflection and reverberation signals.
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Inventors:
PIITAA EICHI MEIYAASU
Application Number:
JP1242688A
Publication Date:
September 19, 1988
Filing Date:
January 22, 1988
Export Citation:
Assignee:
MSDA ASSOCIATES
International Classes:
H04S7/00; H04S1/00; (IPC1-7): H04S7/00
Attorney, Agent or Firm:
Yuzo Yamazaki (1 person outside)