ACOUSTIC SIGNAL TRANSMISSION APPARATUS, ACOUSTIC SIGNAL TRANSMISSION METHOD AND PROGRAM

PROBLEM TO BE SOLVED: To suppress sound pressure of sound generated from a sound source at one point, and not suppress sound pressure at another point.SOLUTION: An acoustic signal transmission apparatus 1 comprises an acoustic signal storage unit 10 in which data for generating a prescribed acoustic...

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Bibliographische Detailangaben
Hauptverfasser:	TAGAMI HIROSHI, YAMAGUCHI ETSUNORI, SUKAI YASUNORI
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS PUBLIC ADDRESS SYSTEMS SOUND-PRODUCING DEVICES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To suppress sound pressure of sound generated from a sound source at one point, and not suppress sound pressure at another point.SOLUTION: An acoustic signal transmission apparatus 1 comprises an acoustic signal storage unit 10 in which data for generating a prescribed acoustic signal in advance is stored; a phase adjusting unit 13 that inverts or shifts a phase of the prescribed acoustic signal generated from the data stored in the acoustic signal storage unit 10 to be transmitted from a speaker 12 and a phase of the prescribed acoustic signal to be transmitted from a speaker 16 to be in reverse phase to each other; and a transmission time adjusting unit 14 that delays transmission time of the prescribed acoustic signal transmitted from the speaker 16 than transmission time of the prescribed acoustic signal transmitted from the speaker 12, by a delayed time that is the length of time taken by a sound wave to travel over the distance between the speaker 12 and the speaker 16.