A new technique employing a high voltage, continuously variable rate, logarithmic sweep, function generator as a source and a 1/3-octave real time audio response analyzer with appropriate integration time display as a receiver, allows easier identification of the ringing frequencies generated in a sound system near regeneration when shock excited. Benefits include easier identification both audibly and visually of the ringing frequency and its interaction with the corrective equalizer`s amplitude or phase adjustment.
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https://aes2.org/publications/elibrary-page/?id=3117
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