Effects of signal intensity and noise on the pitch mixture of dichotic chords
作者:
R. Efron,
D. C. Tanis,
E. W. Yund,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1977)
卷期:
Volume 62,
issue 3
页码: 618-623
ISSN:0001-4966
年代: 1977
DOI:10.1121/1.381563
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The relative salience of the two pitch components (the pitch mixture) of a two‐tone dichotic chord (one tone to each ear via earphones) has been shown to be invariant with respect to the interaural intensity difference (ΔI) over a wide range of ΔI[Efron and Yund, J. Acoust. Soc. Am. 59, 889–898 (1976)]. This range of invariance of the pitch mixture was systematically studied as a function of absolute signal level and signal‐to‐noise ratio. Results indicate that a decrease in the signal‐to‐noise ratio and a decrease in the sound‐pressure level both served to decrease the range of interaural intensity differences over which the invariance occurs. However, while a decrease in both parameters decreased the range of intensity independence, there was a strong interaction between these parameters: The addition of noise eliminated the effect of sound‐pressure levels. These findings are discussed in the context of the model described in the companion paper [Yund and Efron, J. Acoust. Soc. Am. 62, XXX–XXX(1977)].
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