Subjective Evaluation of Motor Vehicle Noise with Low Frequency Components

Abstract

The authors conducted an experiment to investigate the effect of low-frequency components included in motor vehicle noise on subjective evaluation in a low-frequency sound chamber. Single pass-by noises emitted by heavy vehicles with a predominant sound pressure level in the low-frequency range of 40 Hz or 50 Hz were used as sound stimuli. In this paper, we discussed the influence of the peak sound pressure level in the low-frequency component on the oppressive or vibratory feeling, which is characterized as the effect of low-frequency sound, and on the discomfort feeling due to the noise.