Independent Acoustics and Noise Control Expertise

Perforated modular acoustic barriers | Noise Barriers | Sound Screens | Acoustic Fencing

Environmental Noise Barriers

Acoustimodules - External Perforated Steel Acoustic Panels

These portable acoustic panels can be used to create anything from a simple acoustic barrier, a three or four sided semi-enclosure or a fully self contained acoustic enclosure for inside factory spaces.

Portable Steel Acoustic Barriers

These modular acoustic panels can be used to create anything from a simple acoustic barrier, a three or four sided semi-enclosure or a fully self contained acoustic enclosure for inside factory spaces.

ProSonic External Absorbent Panels

Ideal for reducing the reverberation time (and hence omni-directional reverberant sound pressure levels) in road tunnels, railway sidings, construction sites, loading yards etc.

Timber Acoustic Fencing

Timber acoustic fencing.

Acoustic Audio Sound Booths

Portable acoustic booths for a variety of applications, audiology, factory, practice rooms etc

Rules of Thumb and things to think about

Generally it is best to engage an acoustic consultant if you have a need for an acoustic barrier or an acoustic enclosure.
Many common mistakes, or false assumptions, are often made with respect to these items which can lead to their providing virtually no noise reduction at all.

• A noise barrier must at least block the line of sight between the noise source and the receiver. As long as it is wide enough this can give an insertion loss of 5dBA but its best if it is at least 30% higher than this where is could achieve a 10dBA insertion loss.
• A barrier must have enough mass so that the noise is forced over it and not through it. This would generally be in the region of 15-20kg/m²
• A properly designed barrier can give an extra 1dBA for each extra metre of height over and above the line of sight.
• A barrier must be placed as close to the noise source as possible.
• A noise barrier may require and absorptive face depending on the noise problem.
• A noise barrier is unlikely to give more than a 20dBA insertion loss.
• A noise barrier needs to be wide enough. It should be 8-10 times as long as the distance between the receiver and barrier itself with the receiver position being central to the barrier length.
• Enclosure should not be tight fitting, they need space around the enclosure which will depend on the spectral content of the noise

All information contained in these details is given in good faith but without warranty.
Custom Audio Designs reserves the right to alter the specifications of any product without notice.
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