低周波複合音の知覚特性と心理反応

概要

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Hearing thresholds of low frequency complex sounds were measured. The threshold values weresmaller than those of pure tones whose frequencies are the same as the Fundamentals or the harmon ics. The result doesn't satisfy the hearing characteristics for audible sounds that the human ear isable to analyze a periodic sound wave into its sinusoidal components. The hearing characteristics forlow frequency sound was investigated.The following facts are conﬁrmed. Hearing the low frequency sound is affected by the higher harmon ics with the level which is smaller than the threshold. Fundamental wave and higher harmonic aresynthesized, and it is audible as one sound. As the phase difference between fundamental and higherharmonic changes. the hearing threshold of complex sound changes periodically.The psychological reaction is different from the result of pure tone and complex sound. From the re sult of the principal component analysis, it is able to be evaluated for the complex sound in the twofactors, which are the synthetic strength and the scale of the psychological reaction. The hearing char`acteristic of the difference between pure sound and complex sound is clariﬁed for the case that the lowfrequency complex sound is examined by these new factors.
福島工業高等専門学校の論文