NAP ACOUSTICS SOUTH EAST ASIA PTE LTD
DESIGNERS & MANUFACTURERS OF NOISE AND VIBRATION CONTROL PRODUCTS

Sound Snap Acoustic Enclosures

Introduction

As legislation and local standards are introduced to control noise, the need for a modular acoustic panel system has grown. In response to this demand, NAP Acoustics provides the unique Sound Snap system. Its practical design and wide range of applications are illustrated below.
Following many years of development, the Sound Snap panel system is now widely used in hundreds of installations. This is because it is proven, developed, tested and economical, for all applications in noise and vibration control involving screens, enclosures, plenums, barriers or acoustic air handling units.
 

The Sound Snap panel system gives maximum field performance with its overlapping snap lock design, achieved without fasteners or rivets. This eliminates problems of poor sealing, misalignment or manufacturing variations.

Designed to cover a range of performances, the panels are available in a variety of finishes and thicknesses. Standard panels are 50mm and 100mm thick. These provide reductions of up to 35dB(A). Special panels are available on request.

The panels can be installed and disassembled as required, to suit production or machine changes and changes in plant layout. The use of modular panels makes installation fast and simple even for inexperienced teams.

Applications

The wide range of panels enables enclosures and structures of any size to be assembled, including :

  • Machine acoustic enclosures
  • Diesel engine enclosures
  • Acoustic air handling units
  • Noise screens
  • Freeway barriers

The Sound Snap panels have been proven in many rugged situations and a variety of applications such as:
  • Compressor enclosures
  • Gas turbine enclosures
  • Electric motor enclosures
  • Boiler feed pump enclosures
  • Blower enclosures
  • Pumping stations
  • Personnel shelters
  • Observation or control rooms
  • Offices, quiet rooms
  • Recording studios, video or audio
  • Communications booths
  • Audiometry and health science facilities
  • Transformer enclosures
  • Laboratory and vibration test centres
  • Cooling tower screens
  • Condenser screens
Sound Snap panels are recognised by consultants and engineers alike and selected for their functionality, low cost, case of installation, attractive appearance, high noise absorption and high performance.

Acoustic Performance
The noise level reduction achieved at installation depends not only on the transmission loss of the components, but on the size of the enclosure, the internal absorption and other physical effects. With a constant transmission loss, any enclosure with greater internal absorption will achieve a lower external noise level. For this reason, the noise level reduction (NR) or the insertion loss (IL) are the most suitable as practical performance criteria for acoustic enclosures.

Noise Reduction is the difference in sound pressure level (Lp) from inside to outside the enclosure at a given measurement point. Insertion loss is the Lp difference measured with and without the enclosure at the same location and under the same operating conditions. The insertion loss of an enclosure is always less than the transmission loss. With equal insertion losses a different noise reduction will be obtained according to the frequency spectrum of the source.

NAP Acoustics uses transmission loss (TL) as it is the Laboratory result which can be used to provide either the NR or IL for a specific situation.

Copyright © 1999 NAP Acoustics South East Asia Pte Ltd. All rights reserved.
Information in this document is subject to change without notice