1 COMPANY INFORMATION

Marshall Day Acoustics Ltd was formed in 1981 by Christopher Day and Harold Marshall. The firm has specialised in acoustical consulting advice for environmental impact assessments, industrial projects and building projects. Steady growth through the training of graduates and importation of specialist expertise, has seen the firm expand with offices in Auckland, Christchurch, Wellington, New Plymouth, Melbourne, Sydney, Adelaide, China and Ireland over a period of more than 25 years and has become a leading acoustic consultancy with major projects in Australia, New Zealand, South-East Asia, China and the Middle East.
Marshall Day Acoustics has over 50 acoustic consultants in nine offices, with the New Zealand offices having more than 25 professional engineers and scientists. In the event of a sudden increase in workload, we call on our other offices to provide assistance.
Since 1981 the group has worked on over 4000 projects in New Zealand, Australia, Malaysia, Singapore, USA, Hong Kong, China and several Pacific Island countries. Marshall Day Acoustics operates a broad-based acoustic consulting practice specialising in:

2 OFFICE LOCATION

The main office is located at:
    84 Symonds Street
    PO Box 5811
    Wellesley Street
    Auckland 1141
    New Zealand
    T: +64 9 379 7822
    F: +64 9 309 3540
    www.marshallday.com

A link to our office location can be found here:
http://maps.google.co.nz/maps

3 USER SUPPORT

A large number of consultants at Marshall Day Acoustics use SoundPLAN on a daily basis, therefore we have a wealth of user knowledge to draw upon to assist in solving user-related issues.
We offer on-going telephone and e-mail support and in-house training for SoundPLAN users – at our office or yours.

4 IN-HOUSE SOFTWARE

Marshall Day Acoustics has developed a number of high quality acoustical design tools that are in use by acoustics professionals on every continent.

INSUL is a program for predicting the sound insulation of walls, floors, ceilings and windows. The program can estimate the Transmission Loss (TL) in 1/3 octave bands and Weighted Sound Reduction Index (STC or Rw) for use in sound transfer calculations.

http://www.insul.co.nz/

ZORBA is a quick tool for predicting the absorption performance of porous systems with perforated facings. This tool is ideal for the investigation of acoustically critical rooms such as studios, concerts halls, class room, lecture theatres and others.

http://www.zorba.co.nz/

5 SOUNDPLAN CONTACT

Siiri Wilkening
siiri.wilkening@marshallday.co.nz