| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method, device and program for coefficient setting and a sound field correction method that can set a coefficient array of a digital filter for performing sound field correction in an evenly symmetrical way with a small amount of calculation. <P>SOLUTION: The method includes: a step S11 for sampling the signal value of a response signal output by a microphone that collects measurement sounds; a step S04 for setting a reference coefficient of a digital filter that outputs an audio signal to a speaker that outputs the measurement sounds, as a reference signal value; and a step S05 for setting an additive inverse of a signal value that is sampled at the time earlier or later than the time at which the signal value set as the reference coefficient is sampled by prescribed length of time (that is, a corrected distortion signal) as a first coefficient to be used for arithmetic processing of an audio signal of the time earlier than the time of the audio signal on which the digital filter performs arithmetic processing with the use of the reference coefficient, by prescribed length of time, and a second coefficient to be used for arithmetic processing of an audio signal which is later by prescribed length of time. <P>COPYRIGHT: (C)2012,JPO&INPIT |
