EASERA - Software Versions and Modules

AFMG offers two different versions of EASERA and different modules for users to choose. Please have a look at the comparison below to determine which version and possibly which module is the right choice for your needs.

Feature / Version EASERA EASERA PRO MLS Module* POLARS Module** TEF/TDS Module
Number of channels
2 32

Sample rate
8 kHz - 48 kHz 8 kHz - 192 kHz

Reverberation Time (T10, T20, T30)

Signal to Noise Ratio (SNR)

Speech Transmission Index (STI)



Articulation Loss of Consonants (% AlCons)

Sound pressure level (SPL) in real time
Including: A-, B-, C- and Z-weightings for SPL; and visualization of peak and RMS values for both

Voltage measurements in real time

Signal generator with typical stimuli
Sweep, Log-Sweep, Weighted Sweep, Pink Noise, White Noise, Sine, Weighted Noise

Waterfall plot

Calibration of in- and outputs
For acoustic and electronic measurements

Real time measurements
Spectrum, spectrogram, basic transfer function

Early Decay Time (EDT)

Center Time (ts)

Clarities (C30)
User-defined energy ratios
User-defined integration times

Interaural Cross-Correlation Coeff. (IACC) ***

Energy sum
Forward integration

Reflection Index / Reflection Factor
in-situ measurement of material properties

Sound Strength (G)

Relative Strength (Grel)

Feature / Version EASERA EASERA PRO MLS Module* POLARS Module** TEF/TDS Module
Statistical properties of single measurements
Signal mean (DC), noise mean (DC), signal effective value (RMS), crest factor, absolute maximum amplitude...

Filter functions
Low pass, high pass, band pass filters with Butterworth, Chebychev I and Chebychev II characteristics

Window functions
Hanning, Hamming, Blackman, Rectangle, Triangle, Kaiser window types

Basic editing
Averaging Measurement Files, Adding Measurement Files, Cyclic Move, Undo/Redo, Copy/Paste

Phase spectrum
Includes group delay, real and imaginary parts

Noise Criteria (NC, PNC, NR)

Viewing and processing of multiple measurements

Impedance measurements ***

Impulse Response to Noise Ratio (INR)

Definition (D)

Echo Criteria

Lateral Fraction (LF) ***

Latefal Fraction Coefficient (LFC) ***

Support (ST1 and ST2)

Modulation Transfer Index (MTI) and Modulation Transfer Function (MTF)

Various display units
V, dBV, dBu, dBm, dBW, dBSPL, etc.

Feature / Version EASERA EASERA PRO MLS Module* POLARS Module** TEF/TDS Module
User-defined measurement signals
Convert almost any signal to an EASERA stimulus, e.g. WAV files

Automated post processing with editing sequences
Apply a number of editing operations automatically

Advanced editing including mathematical transformations
Remove DC, Set To Value, Add Value, Subtract Value, Multiply By Value, Divide By Value, Scale To, Square, Square Root, Inverse, Power, Custom Smoothing, Expand/Shrink, Change Length, Divide, Subtract...

Harmonic spectra (K2, K3, ...)

Total Harmonic Distortion (THD)

Scale model measurements
Using adequate high-frequency measurement setup, EASERA allows to remove air absorption and change sample rates according to ISO 9613

Tolerance mode to detect sound events and save them to a file automatically

Measurements with MLS excitation signals
Hadamard transformation

3D directional measurements
Using adequate measurement setup, for loudspeakers, microphones, etc.

Automated measurements
Support for measuring robots and turntables, such as Four Audio ELF robot, LinearX LT360, Outline ET2 and Outline ET250-3D turntables

TDS measurements - Time Delay Spectrometry

* The MLS module is included within EASERA Pro.         

** The POLARS module can be combined with EASERA Pro.

*** Using adequate microphone setup.