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The ARTA Software consists of three programs: ARTA, STEPS and LIMP. They are tools for audio measurements and analysis in acoustical and communication systems.
The ARTA is a program for the impulse response measurement, for real-time spectrum analysis and for real-time frequency response measurements. The ARTA program is also a powerful analyzer of gated impulse response, smoothed frequency response (in 1/n-octave bands), step response, impulse response envelope (ETC curve), cumulative spectral decay curve, energy decay in reverberant environments, room acoustical parameters and speech intelligibility measures - STI and RASTI.
The STEPS is a program for frequency response measurements with stepped-sine excitation. It offers possibility to measure the frequency response with high dynamic range and with high noise immunity (at least 30 dB higher dynamics than with a Fourier analyzer). Simultaneously with a
frequency response measurement the STEPS estimates levels of THD and higher harmonics.