Title

The Effect of Thermal Insulators on the Reverbration of Sound In an Enclosed Enviorment

Author(s)

Alexander Mills

School Name

Spring Valley High School

Grade Level

10th Grade

Presentation Topic

Engineering

Presentation Type

Non-Mentored

Abstract

High decibels have many disastrous effects on humans, but one of the main problems is when they are played in an enclosed room. As the sound waves reflect off of each surface in a room, they amplify over time, which could severely damage the hearing of humans. "Listening effort," which is often defined as the cognitive resources necessary for speech recognition naturally varies with the difficulty of a listening situation.(The effect of noise reverberation on listening efforts for adults with normal hearing, 2016) One of the main causes for study failure is the lack of focus in noisy environments. Finding ways to decrease the amount of background noise in frantic environments was the goal by decreasing the reverberation. Reverberation is the reflection of sound waves on any given surface in an enclosed environment. From this experiment, sound diffusers made from styrofoam were believed to be the best method to decrease the amount of reverberation. A wooden rectangular sound box was created to help contain the sound and create a mock simulation of a regular room. Then, five different sets of trials were conducted to determine which insulator proved most effective in decreasing the amount of reverberation. Each independent variable was placed along the walls of the sound box for the different trials after which 10 seconds of sound was recorded using a decibel meter. After the frequency was played, it was turned off for ten seconds and data was recorded again.

Location

John's Hall 107

Start Date

3-28-2020 10:45 AM

Presentation Format

Oral and Written

Group Project

No

COinS
 
Mar 28th, 10:45 AM

The Effect of Thermal Insulators on the Reverbration of Sound In an Enclosed Enviorment

John's Hall 107

High decibels have many disastrous effects on humans, but one of the main problems is when they are played in an enclosed room. As the sound waves reflect off of each surface in a room, they amplify over time, which could severely damage the hearing of humans. "Listening effort," which is often defined as the cognitive resources necessary for speech recognition naturally varies with the difficulty of a listening situation.(The effect of noise reverberation on listening efforts for adults with normal hearing, 2016) One of the main causes for study failure is the lack of focus in noisy environments. Finding ways to decrease the amount of background noise in frantic environments was the goal by decreasing the reverberation. Reverberation is the reflection of sound waves on any given surface in an enclosed environment. From this experiment, sound diffusers made from styrofoam were believed to be the best method to decrease the amount of reverberation. A wooden rectangular sound box was created to help contain the sound and create a mock simulation of a regular room. Then, five different sets of trials were conducted to determine which insulator proved most effective in decreasing the amount of reverberation. Each independent variable was placed along the walls of the sound box for the different trials after which 10 seconds of sound was recorded using a decibel meter. After the frequency was played, it was turned off for ten seconds and data was recorded again.