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Loudspeaker Evaluation Using Digital Techniques

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Loudspeaker impulse responses with a wide dynamic range can be obtained with the aid of a digital computer. If it is assumed in common with network theory that the system is linear and time-invariant, such an impulse response completely defines the electroacoustic transducer in its particular relation to the measuring microphone. From this one measurement alone we are then able to derive the corresponding response to any test signal and, in addition, to present the total system information in ways which may communicate more visual information about its behavior. This paper outlines the progress of a research program which uses the impulse response as a starting point for loudspeaker investigations.

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