Architectural Acoustics Topics

Acoustic Barriers
An acoustic barrier between two rooms.
Acoustic Cavity
The acoustics of enclosed volumes are important when considering sound propagation within the volume.
Acoustic Ducts
Ducts with an acoustic treatment or shaped to reduce or control acoustic wave propagation.
Acoustic Filter Elements
There are a number of different types of acoustic filter elements that are used in many different applications.
Acoustic Material
Any material considered in terms of its acoustical properties.
Acoustic Noise Source
Any unwanted acoustic noise.
Acoustic Pack
Name given to all of the soft absorptive parts used to reduce noise in a vehicle.
Acoustic Source Location
There are a number of different ways by which the location of a noise source may be found.
Acoustic Sources
The simplest acoustic source is the monopole.
Acoustic Tile
A descriptive term often used to describe commercially available room acoustic treatment.
Acoustic Wedges
The acoustic treatment used on all surfaces of an anechoic chamber.
Acoustics
From the Greek akouein ( "to hear") a term sometimes used for the science of sound in general.
Architect
A person who designs all kinds of structures.
Architectural Acoustics Calculations
Lists all Architectural Acoustics Calculations in the Encyclopaedia
Architectural Acoustics Conversions
Lists all Architectural Acoustics Conversions in the Encyclopaedia
Architectural Acoustics Weblinks
Lists all Architectural Acoustics Weblinks in the Encyclopaedia
Artificial Reverberation
Reverberation generated by electrical or acoustical means to simulate that of concert halls, etc.
Average Room Absorption Coefficient
Total room absorption in sabins or metric sabins, divided by total room surface area in consistent units of square feet or square metres.
Average Sound Pressure Level in a Room
The space average sound pressure level taken over the total volume of the room.
A Weighting
This is the most generally used filter when making overall noise measurements.
Cavity Acoustics
The acoustics associated with enclosed volumes.
Dead Room
Room characterized by a relatively large amount of sound absorption and a relatively short reverberation time.
Decibel
The human ear responds logarithmically and it is convenient to deal in logarithmic units in audio systems.
Duct Acoustics
Ducts with acoustic waves propagating through them exist in many forms.
Environmental Noise Modelling
Computer model used to predict the potential noise impact of a proposed new development, or modifications to an existing site. This allows noise control measures to be optimised.
Field Sound Transmission Class
The same as STC rating except as measured in the field in accordance with standard methods.
Flanking Sound Transmission
The transmission of sound from the sound source room to the receiving room by paths other than through the partition under test.
Hard Room
A room in which the surfaces have very low values of sound absorption and are therefore highly reflective.
LAE
Abbreviation for sound exposure level.
Live End Dead End
An acoustical treatment plan for rooms in which one end is highly absorbent and the other end reflective and diffusive.
Receiving Room
In architectural acoustical measurements, the room in which the sound transmitted from the source room is measured.
Reverberation Room
Room having a long reverberation time, specially designed to make the sound field therein as diffuse as possible.
Reverberation Time
The time in seconds required for sound pressure at a specific frequency to decay 60 dB after a sound source is stopped.
Room Absorption
Sum of Sabine absorption due to objects and surfaces in a room, and due to dissipation of energy in the medium within the room.
Room Acoustics
The general acoustic requirements of a room depend on the use.
Room Constant
The ratio of room sound absorption to the quantity 1 minus the average room absorption coefficient.
Room Modes
Frequencies at which sound waves in a room resonate (in the form of standing waves), based on the room dimensions.
Soft Room
Room with highly sound absorptive surfaces.
Sound Source
A calibrated source of sound that is used for measurements of the acoustic performance of materials, partitions and complete rooms and buildings.
Sound Transmission Class
In acoustics, a single number rating for describing sound transmission loss of a wall or partition.
Sound Transmission Coefficient
Of a partition, in a specified frequency band, the fraction of the airborne sound power incident on the partition that is transmitted by the partition and radiated on the other side.
Sound Transmission Loss
Of a partition, in a specified frequency band, ten times the common logarithm of the ratio of the airborne sound power incident on the partition to the sound power transmitted by the partition and radiated on the other side.
Source Room
In architectural acoustical measurements, the room that contains the noise source or sources.
Structural Acoustic Coupling
The physics relating to the vibration of a panel and the sound radiated from it or the acoustic excitation excitation of the panel.

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Subjects: Civil Engineering