Successive versus simultaneous comparison in auditory intensity discrimination

Green, David M.; Kidd, Gerald; Picardi, Maria C.

doi:10.1121/1.389009

Cited by 73 publications

(37 citation statements)

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“…When forced to pay attention to the changes in the entire spectral shape in the roving level, a full spectrum with more harmonics made formant discrimination significantly easier than a partial spectrum with only the target formant, indicating that the presence of formants other than the target formant provided help. These results were expectedly consistent with the studies of profile analysis by Green and his colleagues (Green et al, 1983;Green et al, 1984). They reported that threshold of the detection of signal level increment at 1 kHz improved for roving levels as the number of tonal components increased from 3 to 11.…”

Section: Discussionsupporting

confidence: 81%

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Effects of roving level and spectral range on vowel formant discrimination

Liu

2011

The Journal of the Acoustical Society of America

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Thresholds of vowel formant discrimination for F1 and F2 of isolated vowels with full and partial vowel spectra were measured for normal-hearing listeners at fixed and roving speech levels. Performance of formant discrimination was significantly better for fixed levels than for roving levels with both full and partial spectra. The effect of vowel spectral range was present only for roving levels, but not for fixed levels. These results, consistent with studies of profile analysis, indicated different perceptual mechanisms for listeners to discriminate vowel formant frequency at fixed and roving levels.

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Section: Discussionsupporting

confidence: 81%

“…Results of profile analysis suggested that spectral shape discrimination, e.g., flat spectrum versus spectrum with intensity increment of the tonal signal, was dependent on spectral range and density (Green et al, 1983;Green et al, 1984). They found that the performance of profile analysis became better as spectral range increased.…”

Section: Introductionmentioning

confidence: 97%

Effects of roving level and spectral range on vowel formant discrimination

Liu

2011

The Journal of the Acoustical Society of America

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“…To explain how a listener recognizes a vowel mixed with another one, Scheffers has suggested two similar mechanisms: template matching (see Klatt, 1980), and a profile analysis (Green, Kidd, & Picardi, 1983) operating on the spectral envelope of the stimulus. A vowel is identified on the basis of its spectral envelope (profile or template).…”

Section: Discussionmentioning

confidence: 99%

The perceptual segregation of simultaneous auditory signals: Pulse train segregation and vowel segregation

Chalikia

Bregman

1989

Perception & Psychophysics

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In the experiments reported here, we attempted to find out more about how the auditory system is able to separate two simultaneous harmonic sounds. Previous research (Halikia & Bregman, 1984a, 1984bScheffers, 1983a) had indicated that a difference in fundamental frequency (FO) between two simultaneous vowel sounds improves their separate identification. In the present experiments, we looked at the effect ofFOs that changed as a function of time. In Experiment 1, pairs of unfiltered or filtered pulse trains were used. Some were steady-state, and others had gliding FOs; different FO separations were also used. The subjects had to indicate whether they had heard one or two sounds. The results showed that increased FO differences and gliding FOs facilitated the perceptual separation of simultaneous sounds. In Experiments 2 and 3, simultaneous synthesized vowels were used on frequency contours that were steady-state, gliding in parallel (parallel glides), or gliding in opposite directions (crossing glides). The results showed that crossing glides led to significantly better vowel identification than did steady-state FOs. Also, in certain cases, crossing glides were more effective than parallel glides. The superior effect of the crossing glides could be due to the common frequency modulation of the harmonics within each component of the vowel pair and the consequent decorrelation of the harmonics between the two simultaneous vowels.In most natural listening situations, at any given moment, the vibrations of our eardrums are the result of several sound sources active at the same time. In such cases, the auditory system is faced with the problem of separating the pattern of superimposed sounds into individual subsets of components that correspond to the separate sound sources. Otherwise, nonveridical percepts will be formed, in each of which some of the properties of the perceived sound will derive from one acoustic source, while others will derive from other sources.The present experiments were designed to examine the effects of two types of grouping cues on the perceptual fusing of certain parts of a spectrum with one another. One of these was the "FO" cue: The spectrum contains partials that can be grouped into two subsets by virtue of the fact that each subset contains the harmonics of a different fundamental (FO). The second was the "common fate" cue: When a set of harmonics of the same FO This article is based on research that formed part of a PhD dissertation, submitted to McGill University by M. H. Halikia (now spelled Chalikia) in 1985. The research was supported by the Natural Sciences and Engineering Research Council of Canada, through a grant awarded to A. S. Bregman. We wish to thankS. McAdams, V. Ciocca, B. Roberts, and two anonymous reviewers for their helpful comments on an earlier version of the manuscript. M. H. Chalikia is now in the Department of Psychology, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, WI 53201. Requests for reprints should be sent to Albert S. Bregman,

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“…To combat this, we introduced within-trial roving of intensity to remove any potential loudness cues and to ensure that the listener was discriminating the sounds on the basis of spectral shape (Green, Kidd, & Picardi, 1983;Kidd & Mason, 1992). That is, standard and comparison tones were presented at different intensities within a trial, and participants were instructed to ignore loudness and to differentiate the tones solely on the basis of timbre.…”

Section: Methodsmentioning

confidence: 99%

Updating and feature overwriting in short-term memory for timbre

Mercer

McKeown

2010

Attention, Perception & Psychophysics

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Previous research has demonstrated a potent, stimulus-specific form of interference in short-term auditory memory. This effect has been interpreted in terms of interitem confusion and grouping, but the present experiments suggested that interference might be a feature-specific phenomenon. Participants compared standard and comparison tones over a 10-sec interval and were required to determine whether they differed in timbre. A single interfering distractor tone was presented either 50 msec or 8 sec after the offset of the standard (Experiment 1) or 2 sec prior to its onset (Experiment 2). The distractor varied in the number of features it shared with the standard and comparison, and this proved critical, since performance on the task was greatly impaired when the distractor either consisted of novel, unshared features (Experiment 1) or contained the distinguishing feature of the comparison tone (Experiments 1 and 2). These findings were incompatible with earlier accounts of forgetting but were fully explicable by the recent timbre memory model, which associates interference in short-term auditory memory with an "updating" process and feature overwriting. These results suggest similarities with the mechanisms that underlie forgetting in verbal short-term memory.

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Successive versus simultaneous comparison in auditory intensity discrimination

Cited by 73 publications

References 0 publications

Effects of roving level and spectral range on vowel formant discrimination

Effects of roving level and spectral range on vowel formant discrimination

The perceptual segregation of simultaneous auditory signals: Pulse train segregation and vowel segregation

Updating and feature overwriting in short-term memory for timbre

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