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Pitch in Gated Random Noise

 

作者: Gerard G. Harris,  

 

期刊: The Journal of the Acoustical Society of America  (AIP Available online 1960)
卷期: Volume 32, issue 11  

页码: 1506-1506

 

ISSN:0001-4966

 

年代: 1960

 

DOI:10.1121/1.1935219

 

出版商: Acoustical Society of America

 

数据来源: AIP

 

摘要:

Gated random noise was used as a stimulus in a psychophysical experiment to determine whether a timing signal was present for certain conditions of gating frequency, gating duration, and noise spectrum. The stimulus was presented via earphones as all pass or 2400 cps high pass. The subjects controlled the gating frequency matching it to a 0.1‐msec click, and the standard deviation of the match was measured. All stimuli had sensation levels near 40 db. Ungated noise was added to the gated noise to mask any switching transients. For aDF(% of time noise was gated on) of 20% and 50%, some timing signal in the noise could be matched to a click of 750 cps. All‐pass clicks were easier to match than high‐pass clicks. For aDFof 80%, there was no timing signal above a frequency of 200 cps. This also checked that there was little information given to the subject through the frequency controlling dial. In an auxiliary experiment subjects could fuse gated, random, binaurally incoherent, noise on some but not all of the conditions for which a pitch match was obtained.

 

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