Acoustic apparatus, acoustic adjustment method and program

An acoustic adjustment method outputting test signals from a plurality of speakers configuring a multichannel reproduction system, and adjusting acoustic characteristics by picking up response signals from the speakers using a microphone, comprising:

• outputting test signals from the plurality of speakers;
• picking up response signals from the plurality of speakers using the microphone;
• calculating acoustic adjustment parameters including at least a polarity reversal parameter and a phase filter parameter based on the response signals picked up from the plurality of speakers;
• and
• storing the calculated acoustic adjustment parameters, wherein the polarity reversal parameter is calculated using a low-pass component of the response signals.

A non-transitory computer-readable storage medium having stored thereon, a computer program having at least one code section for processing, the at least one code section being executable by a computer for causing the computer to perform steps comprising:

• outputting test signals from a plurality of speakers configuring a multichannel reproduction system;
• storing response signals from the plurality of speakers picked up by a microphone;
• calculating acoustic adjustment parameters including at least a polarity reversal parameter and a phase filter parameter based on the stored response signals;
• and
• storing the calculated acoustic adjustment parameters, wherein the polarity reversal parameter is calculated using a low-pass component of the response signals.