SUBJECTIVE EVALUATION OF FLOOR IMPACT NOISE BASED ON THE MODEL OF ACF/IACF

✍ Scribed by J.Y. JEON

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 144 KB
• Volume: 241
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.2000.3286

✦ Synopsis

Floor impact noises generated by bang and tapping machines were measured through dual microphones on the ear of a human head. Matching and magnitude estimation techniques for noise evaluation were used to investigate the perceptual di!erences of the impact noises from apartment #oors. Measurements of noise were also conducted by a diagnostic system based on the model of the human auditory}brain system [1]. Physical factors in the model were calculated by the use of the auto-correlation function (ACF) and interaural cross-correlation function (IACF) of binaural signals. From the results, it was found that perceived loudness of #oor impact noise could be represented by the ACF/IACF factors. It became apparent that, at the beginning of each impact of intermittent noise (&&bang noise''), the spatial impression of the sound "eld in an apartment bedroom corresponds to a high value of the IACC. Results also show that bang machine noise is perceived to be louder and noisier than that of a tapping machine.