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Performance Characterization of Audio Reproducers Using a Spectrum Analyzer and a Small Computer

Several quantities derivable from the frequency response of an audio output transducer can, when taken together, serve as the first approximation to the performance description of that product. A system is described which measures the frequency respone and from that data dalculators and prints the sensitivity, bandwidth, average midband standard deviation per octave, and the octaves of maximum output and maximum standard deviation.

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