Analysis of room modes and sound pressure level (SPL) in UiTM / Sharipah Daud

Daud, Sharipah (2007) Analysis of room modes and sound pressure level (SPL) in UiTM / Sharipah Daud. [Student Project] (Unpublished)

Abstract

The acoustic quality in certain room depends on its dimension and will response to the room modes for example the axial, tangential and oblique mode of the room. Sound of pressure level (SPL) is a parameter that can be affected by room modes and it is important to design a room or multipurpose hall. This project is focused in FKE’s meeting room (7.22) and in a class room (3.57). These two rooms were chosen to compare the room modes and SPL by using the MATLAB 7.0 simulation. The dimension of the room should not have same width, length or height to avoid the same eigentone frequencies exists. The best rooms sounding are designed to have many eigentone frequencies that are evenly distributed, rather than just groups of eigentones that clustered together. The room should not be too small or too large for a good distribution of eigentones through out the room. The worst condition of room dimension is a perfect cube for example 3.5x3.5x3.5 meters because the equally dimensions can caused the same eigentone frequencies exist. The small room produces higher eigentone frequencies while a larger room produces lower eigentone frequencies. Each eigentone frequency has its own SPL whereby SPL in decibel (dB) will diminish with increasing the distance from a source.

Metadata

Item Type: Student Project
Creators:
Creators
Email / ID Num.
Daud, Sharipah
UNSPECIFIED
Contributors:
Contribution
Name
Email / ID Num.
Advisor
Sihab, Nor Sabrina
UNSPECIFIED
Subjects: T Technology > TA Engineering. Civil engineering
T Technology > TA Engineering. Civil engineering > Mechanics of engineering. Applied mechanics
T Technology > TA Engineering. Civil engineering > Mechanics of engineering. Applied mechanics > Applied dynamics
T Technology > TA Engineering. Civil engineering > Acoustics in engineering. Acoustical engineering
T Technology > TA Engineering. Civil engineering > Acoustics in engineering. Acoustical engineering > Anechoic chambers
Divisions: Universiti Teknologi MARA, Pulau Pinang > Permatang Pauh Campus > Faculty of Electrical Engineering
Programme: Bachelor of Engineering (Hons) Electrical Engineering
Keywords: Acoustic Quality, SPL, MATLAB 7.0 simulation
Date: 2007
URI: https://ir.uitm.edu.my/id/eprint/53957
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