DURATION SENSATION OF THE SIMULATED ENVIRONMENTAL NOISE IN RELATION TO ITS AUTO-CORRELATION FUNCTION

✍ Scribed by K. SAIFUDDIN; H. SAKAI; Y. ANDO

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 161 KB
• Volume: 241
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.2000.3283

✦ Synopsis

This is the report of an investigation into the sensation of the duration of environmental noise simulated by mixing a pure tone (1 kHz) with white noise. In paired-comparison tests "ve subjects judged whether simulated-environmental-noise stimuli were longer or shorter than a standard pure-tone stimulus with the same sound pressure level and rise}fall time. In experiment 1, the attenuation level ( K) of the envelope of the normalized autocorrelation function (ACF), i.e., the repetition of similar features in the stimulus, was varied by changing the relative amplitude of the pure tone and white-noise components. Results show that the sensation of duration of the white-noise stimulus with a small value of K is signi"cantly (p(0)05) longer than a pure-tone stimulus with a higher value of K . Results of experiment 2 showed that the duration of pure-tone stimuli with lower frequencies as presented by the extracted from the ACF are perceived as being longer (p(0)01) than those of pure-tone stimuli with higher frequencies.