低周波複合音に対する人間の知覚特性の解明に関する実験的研究 <研究成果報告>

概要

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An experiment has been conducted to investigate the characteristics of human perception of complex low frequency noise. Fifteen subjects took part in the experiment in which the perception thresholds of complex tones consisting of two frequency components and pure tones were measured. The frequencies of the tones used in the experiment were 25, 31.5, 40 and 50 Hz. For the complex tones, the perception thresholds were determined by changing the sound pressure level of a frequency component while the sound pressure level of another frequency component was fixed at 5 or 10 dB below the pure tone perception threshold at the corresponding frequency. It was found that the frequency component at the level below the pure tone thresholds might have an effect on the perception of the complex tone.