Acoustics

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ACOUSTICS Research by Boong Siew Juan

Abstract

A museum should have a good value of acoustic to provide a more experience to the visitors. But nowadays most of the museums have designed simplicity to emphasize the art, but that design contains the hard, flat sound-reflective surfaces which bring disadvantages to the acoustics in the museum. We can hear every noisy sound from the visitors, HVAC equipment. And the noise also come from the cars outside because the Sir John Soane Museum is located in front of Lincoln’s Inn Fields, in the Holborn district of central London.

Reverberation

Reverberation is the phenomenon of continuance of sound after it stopped as a result of multiple reflections from surfaces such as furniture, people, air, and etc. The reflections build up with each reflection and they are absorbed by the surfaces of objects in the space enclosed. Besides, the larger the volume of the space, the longer the reverberation time - and the longer the time that sound and noise gets to gather.

There are a few of factors that can cause the poor acoustic. Such as, the showcase glass that used to protect the artwork has a flat reflective surface. Others than that, the floor material which is marble or wooden floors with hard and smooth surface also present a poor sound absorptive. This can increase the noise generated in the space of museum from the enthusiastic voices of the visitors or HVAC equipment.

There are a few of ways to make the museum into a more private experience formed, which is decorating with sound-absorbent materials to achieve a balance of reflection and absorption. First, may decide to incorporate micro-perforated wood veneer surfaces or plank-and-reveal products into wall construction. Besides, to make the listening envelope sound become absorptive may place sound absorbing panels on the exhibit surfaces. It will improve sound emanating from the space as well as absorb sound coming in from space outside listening envelope. Cloud ceilings can be a better choice to reducing echo and reverberation because it is lined with an acoustical backer are excellent sound absorbers.

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