Patent ID: 6754352
Filing Date: 2004-06-22
Classification: H04S

Abstract:
A sound-field production apparatus comprising:direct-sound-generating means for generating a direct sound from a sound signal supplied to said direct-sound-generating means; and reflected-sound-generating means for generating a sound serving as a substitute for a sound obtained as a result of reflection of said direct sound at a level lower than said direct sound with a timing lagging behind said direct sound from said sound signal supplied to said reflected-sound generating means, wherein said direct-sound-generating means includes a first speaker; and said reflected-sound-generating means includes: a pair of second speakers arranged at both sides of said first speaker; a pair of signal-delaying means each used for delaying said sound signal supplied to any one of said second speakers; and a pair of level-adjusting means each used for adjusting the level of said sound signal supplied to any one of said second speakers, and wherein for a distance from a listener to one of said second speakers different from a distance from said listener to the other second speaker, a delay time of said sound signal supplied to said second speaker farther from said listener is made longer than a delay time of said sound signal supplied to said second speaker closer to said listener, and the level of said sound signal supplied to said second speaker farther from said listener is made lower than the level of said sound signal supplied to said second speaker closer to said listener.