| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sound field correction device and a control method thereof capable of correcting a frequency characteristic to a target characteristic with high accuracy. <P>SOLUTION: A microphone picks up pink noise sounded from speakers, level correction data by each frequency band are obtained from the collected sound, the frequency band is grouped relative to inflection points ("23, 26") of a level correction data waveform α formed by connecting the level correction data in the order of frequencies and positive and negative threshold values, and a parametric equalizer is set to the frequency band in the unit of the group. <P>COPYRIGHT: (C)2007,JPO&INPIT |
