| 摘要 |
PURPOSE:To easily realize the improvement of the frequency characteristic at a sound field space in which a reflecting sound or the like in the acoustic reproduction gives adverse effect onto the presence of sound image and the correction of the sound field to make a sense of the presence clear at a low cost. CONSTITUTION:A control frequency is divided by a frequency selection filter 2. Digital filters 5, 6, 7, 8 are employed for a low frequency band and a speaker system 13 having a sharp directivity in which an area for acoustic power radiation is limited for a high frequency band to correct the sound field. |
