Recent News
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Mini IRIS: A new simple and lightweight alternative
03 November 2023
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Sennheiser AMBEO VR Mic support in IRIS
09 September 2019
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IRIS at ICA 2019 in Aachen, Germany
07 September 2019
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Open Plan Office Module
01 August 2019
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New Online User Manual
01 August 2019
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New Release - IRIS 1.4
31 July 2019
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IRIS is put to the test
23 May 2017
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Hugh Vivian Taylor Award 2016
14 November 2016
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Release 1.1.1
30 November 2015
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New Release - IRIS 1.1
02 June 2015
Open Plan Office Module
01 August 2019
With the release of version 1.4, IRIS can come equipped with a powerful set of tools for Open Plan Office measurements. The new tools will measure:
- Spatial decay rate (D2,S)
- Level of speech at 4 m from source (Lp,A,S,4m)
- Distraction distance (rd)
- Privacy distance (rp)
- VDI 2569 room acoustic class
These new metrics are calculated according to procedures detailed in two recently published office acoustics standards, ISO 3382-3:2012 Acoustics -- Measurement of room acoustic parameters -- Part 3: Open plan offices and VDI 2569:2016-02-Draft Sound protection and acoustical design in offices.
These features are available in the Open Plan Office module, an add-on option to base installations of IRIS for versions 1.4 and higher.
Please contact your nearest distributor for pricing details.
Older NewerWhat people are saying
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The success of a musical performance depends on the sense of proximity of performer to listener. This sense is mediated largely by the directional properties of the reflected sound field.
Sir Harold Marshall -
Marshall Day Software is like having an acoustic laboratory in the palm of your hand.
Associate Professor Yan Xiang, Tsinghua University -
I regard the acoustic designs of Marshall Day Acoustics to be amongst the finest and probably the most innovative in the world.
Dr Anders Gade, Technical University of Denmark