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

  • IRIS

    IRIS is a powerful and user friendly measurement system for capturing and analysing room impulse responses in 3D.

    The IRIS plot is at the heart of the IRIS system. Sound rays arriving at the measurement position are represented as a series of easy to identify coloured spikes, immediately after the measurement is conducted.

    The IRIS plot can be used to relate sound rays to physical features of the room, observe the directional distribution of early and late sound energy, as well as identify surfaces causing problematic reflections.

    It’s simple to understand:

    • the spike direction tells you where the ray has come from
    • the spike length tells you the strength of the ray
    • the spike colour tells you when the reflected sound arrived at the microphone
  • Insul

    INSUL is a program developed by Marshall Day Acoustics 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. The prediction theory, prediction comparisons to actual constructions and a demonstration version, are available for download at the INSUL website. Development on INSUL started more than 10 years ago, based on research in the USA by Ben Sharp and others. It has gradually developed into a unique tool that incorporates the best of many research papers published over the last 15 years. INSUL can be customised for particular materials (for instance a particular manufacturer's plasterboard).

  • Zorba

    The new software ZORBA developed by Marshall Day Acoustics 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 rooms, lecture theatres and others.

    ZORBA has been developed in collaboration with acoustic consultants to ensure user friendly features (report generators, data export etc). This makes the software convenient and practical.

  • SoundPLAN

    SoundPLAN is a complete software package offering a full spectrum of noise and air pollution evaluation modules, with quick and accurate calculation and impressive graphics. Comprehensive studies involving any size areas and multiple sources an be completed efficiently and cost effectively using this modeling software.

    SoundPLAN is a three dimensional graphics oriented program. It hosts a digitizer interface and can import bitmaps to digitize the plan. It produces color plots and tabulations of the input data and results. SoundPLAN also includes a wall/barrier design optimization utility and an industrial noise control module.

    Graphic displays help to visualize the benefits of noise control measures in terms of cost vs. noise level reduction. SoundPLAN is the the only integrated software system that models interior noise levels, sound transmission through building walls, sound propagation into the environment, and allows interactive optimization of noise control measures.

    SoundPLAN is marketed worldwide by independent specialist representatives who provide sales, training and hot line services. Private firms, universities and government offices use SoundPLAN for environmental planning, research and evaluation through to various public presentations.

    Over 3500 users in more than 30 countries show SoundPLAN is helping organizations do their work more effectively. SoundPLAN is available in English, Finish, French, German, Japanese, Italian, Polish, and Spanish. SoundPLAN is a trademark of SoundPLAN LLC.

  • SONarchitect ISO
    SONarchitect ISO

    SONarchitect ISO was developed by Sound Of Numbers (SON) and is the most powerful software tool for calculation of sound insulation in accordance with EN ISO 12354 parts 1,2,3,4 and 6.  The software makes it possible to analyse an entire building project and automates the assessment with regards to the relevant sound insulation requirements.

    SONarchitect allows the calculation of external sound insulation, internal sound insulation (impact & airborne) and Reverberation Time.  The software's DXF drawing import module allows architectural designs to be quickly built up within the software.  It has an extensive database of more than 300 constructions and this is continually expanding.  All calculations are contained within a single model resulting in efficient documentation and accreditation of acoustic designs.  More information on the software and a demo version can be downloaded from here Sound Of Numbers