Category Archives: News

Friday June 23rd, 2017

INSUL v9 released

INSUL v9 – new features compared to version 8
  • Better utilisation of small or big screens. (Elements of interface can be re-arranged for personal preference)
  • Prediction of floating floors using polystyrene or mineral wool with concrete screed on top.
  • Double absorptive blankets can be selected (means illustrations can be more realistic)
  • Prediction of external cladding systems using PIR or Polystyrene insulation
  • Better auralisation with a user expandable library of sounds.


Thursday December 3rd, 2015

Penta Techsecure & Rahe-Kraft Partnership

Akustikbüro Rahe-Kraft and Penta Techsecure announce partnership for design services in EMEA region Penta Techsecure LLC is an engineering company with in Dubai, providing high-quality design and engineering services for audio communication and security solutions.  Penta Techsecure LLC has its headquarters in Dubai and operates throughout MENA and the Indian subcontinent. 

Monday November 30th, 2015

IRIS update v1.1.1

  • Export acoustic parameters of all measurements in an IRIS project to a Microsoft Excel spreadsheet
  • Minor bug fixes


Monday November 23rd, 2015

INSUL update v8.0.9

This new release contains a number of minor bug fixes, and a few minor improvements and a few new materials.

Saturday August 15th, 2015

Su2CATT 2.0 released!

SU²CATT version 2.0 released!

There were quite some time no fresh news from our side…but we weren’t lazy…
Today we are proud to announce the release of version 2.0 of our SketchUp export plugin SU²CATT.

What is new in SU²CATT version 2.0?


Friday July 24th, 2015

INSUL Update 8.0.7

  • Regional settings were not saved.
  • Recalling files (European Countries) ‘8.0’ is not a valid floating point value
  • Floor coverings were sometimes not recalled.
  • Printing trapezoidal profiles wider than 300mm (Bad parameters for method :polygon)
  • Triple glazing mass-air-mass frequencies labels were reversed
  • Added Chinese material names in hanzi ( 汉字)
  • Export to SONArchitect wasn’t working (can’t have been working for any version 8 release)
  • Added asphalt roof shingles to materials list (USA and Canada)
  • Added a new Region (=Canada) which has initially same materials as USA


Wednesday June 3rd, 2015

IRIS v1.1

We are very excited to announce the official release of IRIS v1.1. This has several improvements over version v1.0, including:
  • Enhancements to the IRIS plot
  • An extension for SketchUp
  • Measurement of early lateral parameters (LF & LFC)
  • Sound strength calibration and measurement (G, G Early, G Late & GLL)
  • Measurement of stage parameters (ST Early & ST Late)
  • Enhancements to the waveform display
  • Import existing B-format or mono impulse responses
  • Level meters in the Record window


Wednesday April 15th, 2015

Rahe-Kraft exhibits at Dubai airportshow, May 10-12 2015

Rahe-Kraft is exhibiting on the airportshow in Dubai!  We are located on the Germany Pavilion.   Jakob Kraft will be there on the booth during the show ready to talk about your projects (not only airports) and any questions concerning acoustics. We are looking forward to meeting you!

Tuesday April 14th, 2015

IRIS – Sketchup plugin – Coming soon

The export of IRIS plots to Sketchup will be available soon. The new plugin allows to swith on/off several time frames to analyse the measured 3D impulse repsonses in your virtual 3D model.

Extent iris plot on room surfaces

Switch on/off several time frames


Thursday November 14th, 2013

IRIS 3D impulse response measurement system available

It’s not often something really new comes along in the Room Acoustics field, but Marshall Day Acoustics has just released a new measurement system that promises to provide a dramatic step forward in being able to understand the acoustics of rooms.

Thursday October 10th, 2013

INSUL Software update v7.0.11

INSUL v7.0 Release 11
A new update of INSUL is available for download.
The download and update can be started directly from the software. More information are available on the download page or please contact Tobias Kirchner (t.kirchner [at]

Friday July 12th, 2013

INSUL Software update v7.0.10

INSUL v7.0 Release 10
A new update of INSUL is available for download.
The download and update can be started directly from the software. More information are available on the download page or please contact Tobias Kirchner (t.kirchner [at]