| 摘要 |
PURPOSE: To estimate the effect of localization at the stage of designing a sound image localization system. CONSTITUTION: Sound receiving points are set in a distribution shape within the audience seat area of a sound field by a sound receiving point distribution generation means. From a localization parameter 5, speaker data 6, room shape data 7, the echo time pattern 9 for which the localization parameter 5 at each of the sound receiving points is taken into account is calculated by an echo time pattern calculation means 8. Next, after preceding sound is detected by a preceding sound detection means 10, whether preceding sound is the sound from a localization speaker or not is decided and succeeding sound is detected by a succeeding sound detection means 11, the level difference between preceding sound and succeeding sound, and the time difference between preceding sound and succeeding sound are calculated by a level difference calculation means 12 and a time difference calculation means 13, respectively. The sound image separation chart 4 determined by an acoustic psychological experiment is preliminarily applied to the information on the time difference and the level difference, the probability that the sound image is not separated in the direction of the localization speaker and is localized is calculated by a localization probability calculation means 14 and a color area map display of the distribution of the localization probability is performed. |
