SOURCE INDEPENDENT MEASUREMENT (SIM): Pioneered by Meyer Sound, SIM is a Meyer Sound trademark for a highly developed analyzer for source independent measure- ment. The technique is a dual-channel acoustical analysis method in which the excitation signal may be independent of — not generated or determined by — the measurement sys- tem. Source independent measurement uses faster, high-resolution algorithms that substan- tially decrease errors and achieve more precision than conventional dual-FFT techniques.
It provides the information required to verify the components of a sound system including frequency and phase response, polarity, distortion, dynamic range, coverage and more.
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