How do I measure speech intelligibility with EASERA?

In EASERA almost any evaluation and measure can be derived directly or indirectly from loaded or measured impulse response data. The same is true for most of the intelligibility measures.

EASERA allows for calculating STI, STI (Male), STI (Female) as well as AlCons and the equivalent STIPa. Note that these values are all calculated from the modulation transfer function (MTF), which in turn originates in the impulse response.

Can EASERA perform distortion measurements?

Yes, it can.

EASERA implements a new method of measuring nonlinearities in the response of a system. By utilizing a pink sweep as an excitation signal, all of the distortion components are located at the end of the impulse response and can be separated by windowing.

After some post-processing the individual harmonic frequency responses can be viewed and even THD in a high frequency resolution can be computed. Of course also the K2, K3 K.. spectra are available.

What is the difference between the ETM, EFR and EMD formats?

There are basically three native file formats available in EASERA: EMD, ETM and EFR.

EMD is a time domain format that also saves the raw measurement data. Generally this is recommendable to use during measurement sessions as it allows for later inspection of the actually recorded raw input data.

The ETM contains the IR data only, but it is otherwise identical with the EMD. It is useful if you are not interested in keeping the raw data or if you just want to save some overlay files.

My SysTune crashes if I click on [Select Device] in the [Configure] menu.

If you have installed the Digidesign ASIO driver, this can cause the problem.
Extract the file from the attached zip below and place it in the folder where​​ "SysTune.stcfg" is located. For your computer that is C:\Users\<user>\AppData\Local\AFMG\EASERA SysTune  (<user> is your log-in name).

This will disable the Digidesign ASIO driver in SysTune only.

Which Audio Interfaces are compatible with the software?

In general, all modern audio interfaces have a very high probability of working fine with SysTune. To make use of more than the primary two channels please make sure, that your device is supplied together with a current ASIO driver.

If you like to be sure that your existing hardware can be used in conjunction with our software, we suggest registering for a free 30-day trial version.

Can I use the same AFMG SysTune license under Boot Camp and in a virtual machine?

Yes, this is possible although AFMG does not recommend it. You need to understand the following background information and proceed with the instructions below to transfer your SysTune User Key between the different environments.

The licensing engine used by AFMG SysTune sees Boot Camp and a virtual machine as different computers.

To use one license under both environments the license has to be migrated from Boot Camp to the virtual machine or vice-versa.

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
measurements
Applications in
engineering and physics
RF and infrared
simulation

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