Running EASE seems to be causing AutoCAD (from Autodesk) to want to run its installation routine. How do I correct this?

If running EASE always causes Autodesk AutoCAD (or a related product) to run its installation routine, this is most likely an indication that the installation of AutoCAD was somehow corrupted and needs to be repaired.  To correct this problem please go to the Windows Control Panel, choose Programs and Features, then click on Autodesk AutoCAD (or the related product) to perform a repair or reinstall.

AURA Simulation Parameters - what should I use when?

AURA is a highly sophisticated room-acoustic module. It has been integrated into EASE, based on the CAESAR software from Aachen University. It can be considered as consisting of two different engines. One method is utilized for highly accurate auralisations at selected receiver positions, it is called AURA Response. The other one is less precise but much faster and therefore allows for the calculation at many points, that means AURA Mapping.

Can you give a brief overview of what EASE is and what it can do for me?

EASE is a software that allows the creation of a 3D acoustic model of a room and a sound system within a room.

First the geometric data for the room is entered, then data for the acoustic absorption of the materials that are on the walls and other surfaces. From this, reverberation times and other acoustic parameters can be computed, and the model can be used to test various modifications that might be made to the acoustics.

Has EASE been verified or certified and does AFMG implement quality assurance programs for software development?

AFMG develops software on the current state-of-the-art level.

EASE’s algorithms have repeatedly been tested to perform as intended. Sufficient proof has been published in renowned magazines and textbooks. For example, the latest paper addressing speech intelligibility can be found here:

Which version of EASE should I buy - JR, Standard, or Standard + AURA Module?

In order to assess if a project can be simulated adequately based on the room´s characteristics it is important to know about the different calculation methods used within the different versions of EASE.

AFMG offers three calculation levels within the product family of EASE – the industry standard electro-acoustical simulation software:


I am trying to install the License Guard and get a “Failed to load MediaRead.dll” error. How do I fix the problem?

This error is the result of a security warning from Windows that identifies files that were downloaded. To "unblock" a file, right-click it in Windows Explorer, choose Properties from the context menu, click the Unblock button in the lower right-hand corner of the resulting dialog, and hit OK or Apply. Important: ZIP files should be "unblocked" before their contents are extracted

Why does the SPL Column in Loudspeaker Properties for a GLL or DLL show 0 (zero) dB or less?

Before EASE actually calculates the response of a certain loudspeaker defined in a GLL or DLL, the program does not know anything about the sensitivity or maximum input voltage the manufacturer entered within the GLL/DLL. Therefore, neither the sensitivity, frequency response, nor the maximum input can be displayed in the user interface.

We are a loudspeaker company. Do you have measurement guidelines for creating loudspeaker data files in GLL format?

Accurate loudspeaker data is necessary for reliable simulation results.

As a manufacturer you can measure and create loudspeaker data yourself. In addition to the proper equipment, you would need in-depth knowledge about the measurement techniques to adequately model the loudspeaker behavior. For this please refer to SpeakerLab’s comprehensive User´s Guide which can be found under the link below.

In this manual you will find step-by-step instructions for the most common cases along with related references:

Ahnert Feistel Media Group

Located in Berlin, Germany, AFMG® Technologies GmbH has created the industry standards EASE and EASERA software for acoustic simulation and measurement as well as their related products EASE Focus, AFMG SysTune, EASE Address and EASE SpeakerLab.

In cooperation with our partner company SDA Software Design Ahnert GmbH we develop and distribute software for:

Electro-acoustic and
room-acoustic modeling
Electronic and acoustic
Applications in
engineering and physics
RF and infrared

Register for AFMG News

Stay informed about our new technologies, software updates, special offers, upcoming seminars, and more.


Subscribe Now