In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 50, No. 1A_Supplement ( 1971-07-01), p. 143-143
Abstract:
Acoustic “words” comprising short tone bursts separated by silence were presented binaurally against a low-level (40 dB SPL over-all re standard reference) masking background of white noise. Eight listeners, using the two-alternative temporal forced-choice procedure, provided experimental data for determining the behavioral thresholds. Two hundred different signal formats of various tone burst frequencies (75–2500 Hz), burst lengths (10–200 msec), durations of interburst silence (10–200 msec), and number of bursts per signal word (7–32) were investigated. The literature [C. S. Watson and R. W. Gengel, J. Acoust. Soc. Amer. 46, 989–997 (1969)] suggests that one may expect thresholds to be strongly influenced by burst length and interburst spacing. However, results consistently were dominated by the tone burst frequency effects and the thresholds followed the usual threshold-versus-frequency curves for pure tones. Effects of variations in the other signal parameters were minor and ambiguous. The results can be explained by an aural “de-integration” time. [Study funded by International Digisonics Corporation, Chicago.]
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
1971
detail.hit.zdb_id:
1461063-2
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