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A computer-generated pulse signal for sound measurement is discussed. A pulse signal whose power spectrum is flat is generated by inverse Fourier transformation. The generation of a time-stretched pulse and its compression method are also discussed. Computer-controlled measurements enable time averaging and the elimination of reflected sound is made in the computer memory by the operator’s instruction monitoring acquired waveform on CRT.
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Nobuharu AOSHIMA (1981) studied this question.
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