| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound absorption panel capable of exerting sufficient sound absorption characteristics for sound in a low frequency band even when an installation space in a width direction is limited.SOLUTION: A sound absorption panel 100 absorbs sound from a sound source. The sound absorption panel 100 includes: a porous plate 1 having multiple open holes 1a therein; a rear plate 2 that is located apart from the porous plate 1 with a predetermined interval in the rearward thereof; and division plates 3 dividing an air layer between the porous plate 1 and the rear plate 2. The division plate 3 is a movable type such that when the sound source approaches, adjoining air layers divided by the division plate 3 are made to communicate with each other, and when the sound source is away, the air layers are divided from each other again. |
