Acoustic apparatus

摘要

Measurement signals for calculating acoustic characteristics of the acoustic space are reproduced in a plurality of periods at sound reproduction intervals. A picked-up signal is acquired by picking up a reproduced signal. The picked-up signal is divided for each period, and the acoustic characteristics of the acoustic space are calculated from an arithmetic unit of the divided periodic signals and the measurement signal. Before sound reproduction, a background noise signal in the acoustic space is measured, and a peak frequency component of a frequency characteristic of the background noise signal is detected. The number of periods and sound reproduction intervals of measurement signals to be reproduced are controlled so as to cancel out a detected peak frequency component at the time of calculating arithmetic unit.

主权项

1. An apparatus comprising:
an output unit arranged to output measurement sound signals in an acoustic space at an output interval; an input unit arranged to input a plurality of picked-up signals picked up in the acoustic space during each of the measurement sound signals output by the output unit; a processing unit arranged to obtain acoustic characteristics of the acoustic space from an arithmetic mean of the plurality of picked-up signals input by the input unit and the measurement signals; and a control unit arranged to measure background noise in the acoustic space and detect a peak frequency component of a frequency characteristic of the background noise signal, wherein the processing unit is arranged to control the output interval of measurement sound signals output by said output unit so as to cancel out the peak frequency component in a result of the arithmetic mean of the plurality of picked-up signals.