New room equalizer realization using a match space method for high-quality audio

This paper proposes a realization of room equalizer which uses a movable and variable acoustic device and revises frequency response, and is also applicable to a variety of places. When equalizing frequency response, commonly used electric graphic equalizers or parametric equalizers have the same effect as the sound signals such as audio passing through electrical elements like condenser or coil, and phase shift of audio signal occurs at this time. Accordingly, they secure frequency response by adjusting and equalizing the characteristics of sound-absorbing materials without any distortion of the original sound. Therefore, this study proposes a room equalizer that does not use these electrical characteristics, but uses non-electronic spatial matching with an excellent sound persistency rate to enable its application to various changes in space and time. We get a excellent room equalizer responding.