Improving Fellowship Hall Acoustics
Like other types of social gathering areas, fellowship halls are faced with the common issue of sound reverberations interfering with the quality of acoustics within the room. When a group converses in a fellowship hall, particularly one containing several hard, reflective surfaces, the collective voices create reverberations that affect the quality of acoustics throughout the area. As these reverberations interfere with speech clarity, people naturally speak more loudly, creating a perpetual audibility problem that can contribute to an unpleasant atmosphere altogether. The absorption of these excess reverberations to eliminate background noise and improve speech clarity is the aim of many fellowship hall acoustical improvement projects.
Implementing an acoustical treatment aimed at controlling noise levels and improving the quality of acoustics within a fellowship hall involves first understanding the sound behavior being targeted. If you stand in the fellowship hall alone and yell your name, a portion of the sound energy created by your voice will pass through the wall and ceiling surfaces, while the remainder of the sound will reflect from the walls, ceiling and other surfaces back into the room. The time between the end of your shout and the introduction of the sound back into the room, when it is less than 0.1 second, is referred to as the reverberation time (while time a time lapse of more than 0.1 second is an echo). Reverberations occur so quickly that they are perceived as one prolonged sound.
