Acoustic design of wooden grille ceiling in conference room

<p>The exposed concrete on the ceiling of the conference room and the glass curtain wall form strong reflections, and the sound pickup echo is obvious during video conferencing. Wooden grille sound-absorbing panels are suspended from the ceiling, and the cavity is retained on the top surface to improve low-frequency absorption. </p><p>The NRC of the grille plate is about 0.85, and the wood color is coordinated with the conference table. When designing, the hanging area needs to be determined based on the size of the conference table, which usually accounts for two-thirds of the ceiling area, leaving the central lighting and projection area reserved. </p>