Version Comparison EASERA

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)
According to IEC 60268-16:2020
Articulation Loss of Consonants (% AlCons)      
Common Intelligibility Scale (CIS)      
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 (C50, C80)
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.