Software-Based Live Sound Measurements, Part 2
In previous publications the authors introduced the software based measuring system EASERA to be used for measurements with pre-recorded music and speech signals. This second part investigates the use of excitation signals supplied from an independent external source in real-time. Using a newly developed program module live-sound recordings or speech and music signals from a microphone input and from the mixing console can be utilized to obtain impulse response data for further evaluation. New noise suppression methods are presented that allow these impulse responses to be acquired in full-length even in occupied venues. As case studies, room acoustic measurements based on live sound supply are discussed for a concert hall and a large cathedral. Required measuring conditions and limitations are derived as a result.
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