| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve space sensation of an audience who is present under a balcony in a sound space where balcony seats are prepared. <P>SOLUTION: A CPU 25 acquires such a filter coefficient h<SB POS="POST">m</SB>(m=0, 1, 2,..., M) that an inclination of an impulse response effective value waveform being a convolution computation result of the filter coefficient h<SB POS="POST">m</SB>(m=0, 1, 2,..., M) and an impulse response IRss between a sound source 90 and microphones 1L and 1R near the sound source 90 approximates an inclination of an effective value waveform of an impulse response UpsideIR between the sound source 90 and microphones 2L and 2R on the balcony 86. The filter coefficient h<SB POS="POST">m</SB>(m=0, 1, 2,..., M) is used as a filter coefficient h<SB POS="POST">m</SB>(m=0, 1, 2, M) used for convolution computation of FIR filters 16L-k and 16R-k. <P>COPYRIGHT: (C)2012,JPO&INPIT |
