Yi Shen | Indiana University (original) (raw)

Papers by Yi Shen

Research paper thumbnail of Level dominance for the detection of changes in level distribution in sound streams

The Journal of the Acoustical Society of America, 2013

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Research paper thumbnail of Gap Detection and Temporal Modulation Transfer Function as Behavioral Estimates of Auditory Temporal Acuity Using Band-Limited Stimuli in Young and Older Adults

Purpose: Gap detection and the temporal modulation transfer function (TMTF) are 2 common methods ... more Purpose: Gap detection and the temporal modulation transfer function (TMTF) are 2 common methods to obtain behavioral estimates of auditory temporal acuity. However, the agreement between the 2 measures is not clear. This study compares results from these 2 methods and their dependencies on listener age and hearing status.

Method: Gap detection thresholds and the parameters that describe the TMTF (sensitivity and cutoff frequency) were estimated for young and older listeners who were naive to the experimental tasks. Stimuli were 800-Hz-wide noises with upper frequency limits of 2400 Hz, presented at 85 dB SPL. A 2-track procedure (Shen & Richards, 2013) was used for the efficient estimation of the TMTF.

Results: No significant correlation was found between gap detection threshold and the sensitivity or the cutoff frequency of the TMTF. No significant effect of age and hearing loss on either the gap detection threshold or the TMTF cutoff frequency was found, while the TMTF sensitivity improved with increasing hearing threshold and worsened with increasing age.

Conclusion: Estimates of temporal acuity using gap detection and TMTF paradigms do not seem to provide a consistent description of the effects of listener age and hearing status on temporal envelope processing.

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Research paper thumbnail of Rapid estimation of high-parameter auditory-filter shapes

A Bayesian adaptive procedure, the quick-auditory-filter (qAF) procedure, was used to estimate au... more A Bayesian adaptive procedure, the quick-auditory-filter (qAF) procedure, was used to estimate auditory-filter shapes that were asymmetric about their peaks. In three experiments, listeners who were naive to psychoacoustic experiments detected a fixed-level, pure-tone target presented with a spectrally notched noise masker. The qAF procedure adaptively manipulated the masker spectrum level and the position of the masker notch, which was optimized for the efficient estimation of the five parameters of an auditory-filter model. Experiment I demonstrated that the qAF procedure provided a convergent estimate of the auditory-filter shape at 2 kHz within 150 to 200 trials (approximately 15 min to complete) and, for a majority of listeners, excellent test-retest reliability. In experiment II, asymmetric auditory filters were estimated for target frequencies of 1 and 4 kHz and target levels of 30 and 50 dB sound pressure level. The estimated filter shapes were generally consistent with published norms, especially at the low target level. It is known that the auditory-filter estimates are narrower for forward masking than simultaneous masking due to peripheral suppression, a result replicated in experiment III using fewer than 200 qAF trials.

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Research paper thumbnail of A MATLAB toolbox for the efficient estimation of the psychometric function using the updated maximum-likelihood adaptive procedure

A MATLAB toolbox for the efficient estimation of the threshold, slope, and lapse rate of the psyc... more A MATLAB toolbox for the efficient estimation of the threshold, slope, and lapse rate of the psychometric function is described. The toolbox enables the efficient implementation of the updated maximum-likelihood (UML) procedure. The toolbox uses an object-oriented architecture for organizing the experimental variables and computational algorithms, which provides experimenters with flexibility in experimental design and data management. Descriptions of the UML procedure and the UML Toolbox are provided, followed by toolbox use examples. Finally, guidelines and recommendations of parameter configurations are given.

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Research paper thumbnail of Level dominance for the detection of changes in level distribution in sound streams

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Research paper thumbnail of Bayesian adaptive estimation of the auditory filter

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Research paper thumbnail of Loudness matching for enhanced sinusoids.

When a target sound is masked by a notched masker, thresholds can be lower when a preview of the ... more When a target sound is masked by a notched masker, thresholds can be lower when a preview of the masker precedes the detection interval. Two experiments were run to determine whether signals “enhanced” by such precursors are also louder. Trials included three intervals. On each trial a random, multi‐tone masker was chosen, and presented in each interval.

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Research paper thumbnail of The use of relative weights to assess perceptual segregation in a concurrent profile analysis task

A series of experiments were conducted to address the need of a psychophysical tool to measure th... more A series of experiments were conducted to address the need of a psychophysical tool to measure the perceptual segregation of concurrent sources. The experiments measured listeners' sensitivity to the spectral profile of a target sound embedded in a concurrent masker. Both the target and masker were harmonic complexes, which were presented at different fundamental frequencies in order to investigate the effects of this acoustic cue on segregation.

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Research paper thumbnail of Concurrent profile analysis: The effect of segregation cues on spectral‐shape comparisons for simultaneous stimuli.

The ability to accurately perceive spectral information from one sound source in the presence of ... more The ability to accurately perceive spectral information from one sound source in the presence of others is crucial for speech understanding in complex and challenging environments. In the present study, non‐speech stimuli, a pair of concurrent complex tones, were used to obtain psychophysical measurements of this ability in a controlled setting. Listeners detected whether the spectral profiles of the two concurrent complexes were the same or exchanged across two observation intervals.

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Research paper thumbnail of Masking patterns of stimuli exhibiting enhanced detection for spectrally notched precursors.

A narrow‐band signal is subjective to less masking from a simultaneous notched masker if it is pr... more A narrow‐band signal is subjective to less masking from a simultaneous notched masker if it is preceded by a precursor that occupies the same spectral region as the masker. The present study investigates the effect of the precursor on the internal representations of the signal and masker by measuring the masking pattern for short‐duration probes as a function of the spectrotemporal placement.

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Research paper thumbnail of Temporal modulation transfer function for efficient assessment of auditory temporal resolution

The Journal of the Acoustical Society of America, 2013

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Research paper thumbnail of Comparing adaptive procedures for estimating the psychometric function for an auditory gap detection task

Attention, perception & psychophysics, 2013

A subject’s sensitivity to a stimulus variation can be studied by estimating the psychometric fun... more A subject’s sensitivity to a stimulus variation can be studied by estimating the psychometric function. Generally speaking, three parameters of the psychometric function are of interest: the performance threshold, the slope of the function, and the rate at which attention lapses occur. In the present study, three psychophysical procedures were used to estimate the three-parameter psychometric function for an auditory gap detection task. These were an up–down staircase (up–down) procedure, an entropy-based Bayesian (entropy) procedure, and an updated maximum-likelihood (UML) procedure. Data collected from four young, normal-hearing listeners showed that while all three procedures provided similar estimates of the threshold parameter, the up–down procedure performed slightly better in estimating the slope and lapse rate for 200 trials of data collection. When the lapse rate was increased by mixing in random responses for the three adaptive procedures, the larger lapse rate was especially detrimental to the efficiency of the up–down procedure, and the UML procedure provided better estimates of the threshold and slope than did the other two procedures.

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Research paper thumbnail of Investigating the auditory enhancement phenomenon using behavioral temporal masking patterns

The Journal of the Acoustical Society of America, Jan 1, 2012

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Research paper thumbnail of A maximum-likelihood procedure for estimating psychometric functions: Thresholds, slopes, and lapses of attention

The Journal of the Acoustical Society of America, Jan 1, 2012

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Research paper thumbnail of Spectral processing of two concurrent harmonic complexes

The Journal of the Acoustical Society of America, Jan 1, 2012

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Research paper thumbnail of Toward an objective measure for a "stream segregation" task

The Journal of the Acoustical Society of America, Jan 1, 2012

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Research paper thumbnail of The effect of temporal asymmetry on amplitude modulation detection using pure-tone carriers (L)

Journal of the Acoustical Society of America, Jan 1, 2011

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Research paper thumbnail of Level dependence in behavioral measurements of auditory-filter phase characteristics

The Journal of the Acoustical Society of America, Jan 1, 2009

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Research paper thumbnail of Effect of fast-acting compression on modulation detection interference for normal hearing and hearing impaired listeners

The Journal of the Acoustical Society of America, Jan 1, 2010

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Research paper thumbnail of Investigating temporal asymmetry using masking period patterns and models of peripheral auditory processing

The Journal of the Acoustical Society of America, Jan 1, 2011

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Research paper thumbnail of Level dominance for the detection of changes in level distribution in sound streams

The Journal of the Acoustical Society of America, 2013

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Research paper thumbnail of Gap Detection and Temporal Modulation Transfer Function as Behavioral Estimates of Auditory Temporal Acuity Using Band-Limited Stimuli in Young and Older Adults

Purpose: Gap detection and the temporal modulation transfer function (TMTF) are 2 common methods ... more Purpose: Gap detection and the temporal modulation transfer function (TMTF) are 2 common methods to obtain behavioral estimates of auditory temporal acuity. However, the agreement between the 2 measures is not clear. This study compares results from these 2 methods and their dependencies on listener age and hearing status.

Method: Gap detection thresholds and the parameters that describe the TMTF (sensitivity and cutoff frequency) were estimated for young and older listeners who were naive to the experimental tasks. Stimuli were 800-Hz-wide noises with upper frequency limits of 2400 Hz, presented at 85 dB SPL. A 2-track procedure (Shen & Richards, 2013) was used for the efficient estimation of the TMTF.

Results: No significant correlation was found between gap detection threshold and the sensitivity or the cutoff frequency of the TMTF. No significant effect of age and hearing loss on either the gap detection threshold or the TMTF cutoff frequency was found, while the TMTF sensitivity improved with increasing hearing threshold and worsened with increasing age.

Conclusion: Estimates of temporal acuity using gap detection and TMTF paradigms do not seem to provide a consistent description of the effects of listener age and hearing status on temporal envelope processing.

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Research paper thumbnail of Rapid estimation of high-parameter auditory-filter shapes

A Bayesian adaptive procedure, the quick-auditory-filter (qAF) procedure, was used to estimate au... more A Bayesian adaptive procedure, the quick-auditory-filter (qAF) procedure, was used to estimate auditory-filter shapes that were asymmetric about their peaks. In three experiments, listeners who were naive to psychoacoustic experiments detected a fixed-level, pure-tone target presented with a spectrally notched noise masker. The qAF procedure adaptively manipulated the masker spectrum level and the position of the masker notch, which was optimized for the efficient estimation of the five parameters of an auditory-filter model. Experiment I demonstrated that the qAF procedure provided a convergent estimate of the auditory-filter shape at 2 kHz within 150 to 200 trials (approximately 15 min to complete) and, for a majority of listeners, excellent test-retest reliability. In experiment II, asymmetric auditory filters were estimated for target frequencies of 1 and 4 kHz and target levels of 30 and 50 dB sound pressure level. The estimated filter shapes were generally consistent with published norms, especially at the low target level. It is known that the auditory-filter estimates are narrower for forward masking than simultaneous masking due to peripheral suppression, a result replicated in experiment III using fewer than 200 qAF trials.

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Research paper thumbnail of A MATLAB toolbox for the efficient estimation of the psychometric function using the updated maximum-likelihood adaptive procedure

A MATLAB toolbox for the efficient estimation of the threshold, slope, and lapse rate of the psyc... more A MATLAB toolbox for the efficient estimation of the threshold, slope, and lapse rate of the psychometric function is described. The toolbox enables the efficient implementation of the updated maximum-likelihood (UML) procedure. The toolbox uses an object-oriented architecture for organizing the experimental variables and computational algorithms, which provides experimenters with flexibility in experimental design and data management. Descriptions of the UML procedure and the UML Toolbox are provided, followed by toolbox use examples. Finally, guidelines and recommendations of parameter configurations are given.

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Research paper thumbnail of Level dominance for the detection of changes in level distribution in sound streams

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Research paper thumbnail of Bayesian adaptive estimation of the auditory filter

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Research paper thumbnail of Loudness matching for enhanced sinusoids.

When a target sound is masked by a notched masker, thresholds can be lower when a preview of the ... more When a target sound is masked by a notched masker, thresholds can be lower when a preview of the masker precedes the detection interval. Two experiments were run to determine whether signals “enhanced” by such precursors are also louder. Trials included three intervals. On each trial a random, multi‐tone masker was chosen, and presented in each interval.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The use of relative weights to assess perceptual segregation in a concurrent profile analysis task

A series of experiments were conducted to address the need of a psychophysical tool to measure th... more A series of experiments were conducted to address the need of a psychophysical tool to measure the perceptual segregation of concurrent sources. The experiments measured listeners' sensitivity to the spectral profile of a target sound embedded in a concurrent masker. Both the target and masker were harmonic complexes, which were presented at different fundamental frequencies in order to investigate the effects of this acoustic cue on segregation.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Concurrent profile analysis: The effect of segregation cues on spectral‐shape comparisons for simultaneous stimuli.

The ability to accurately perceive spectral information from one sound source in the presence of ... more The ability to accurately perceive spectral information from one sound source in the presence of others is crucial for speech understanding in complex and challenging environments. In the present study, non‐speech stimuli, a pair of concurrent complex tones, were used to obtain psychophysical measurements of this ability in a controlled setting. Listeners detected whether the spectral profiles of the two concurrent complexes were the same or exchanged across two observation intervals.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Masking patterns of stimuli exhibiting enhanced detection for spectrally notched precursors.

A narrow‐band signal is subjective to less masking from a simultaneous notched masker if it is pr... more A narrow‐band signal is subjective to less masking from a simultaneous notched masker if it is preceded by a precursor that occupies the same spectral region as the masker. The present study investigates the effect of the precursor on the internal representations of the signal and masker by measuring the masking pattern for short‐duration probes as a function of the spectrotemporal placement.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Temporal modulation transfer function for efficient assessment of auditory temporal resolution

The Journal of the Acoustical Society of America, 2013

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Comparing adaptive procedures for estimating the psychometric function for an auditory gap detection task

Attention, perception & psychophysics, 2013

A subject’s sensitivity to a stimulus variation can be studied by estimating the psychometric fun... more A subject’s sensitivity to a stimulus variation can be studied by estimating the psychometric function. Generally speaking, three parameters of the psychometric function are of interest: the performance threshold, the slope of the function, and the rate at which attention lapses occur. In the present study, three psychophysical procedures were used to estimate the three-parameter psychometric function for an auditory gap detection task. These were an up–down staircase (up–down) procedure, an entropy-based Bayesian (entropy) procedure, and an updated maximum-likelihood (UML) procedure. Data collected from four young, normal-hearing listeners showed that while all three procedures provided similar estimates of the threshold parameter, the up–down procedure performed slightly better in estimating the slope and lapse rate for 200 trials of data collection. When the lapse rate was increased by mixing in random responses for the three adaptive procedures, the larger lapse rate was especially detrimental to the efficiency of the up–down procedure, and the UML procedure provided better estimates of the threshold and slope than did the other two procedures.

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Research paper thumbnail of Investigating the auditory enhancement phenomenon using behavioral temporal masking patterns

The Journal of the Acoustical Society of America, Jan 1, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A maximum-likelihood procedure for estimating psychometric functions: Thresholds, slopes, and lapses of attention

The Journal of the Acoustical Society of America, Jan 1, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Spectral processing of two concurrent harmonic complexes

The Journal of the Acoustical Society of America, Jan 1, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Toward an objective measure for a "stream segregation" task

The Journal of the Acoustical Society of America, Jan 1, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The effect of temporal asymmetry on amplitude modulation detection using pure-tone carriers (L)

Journal of the Acoustical Society of America, Jan 1, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Level dependence in behavioral measurements of auditory-filter phase characteristics

The Journal of the Acoustical Society of America, Jan 1, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effect of fast-acting compression on modulation detection interference for normal hearing and hearing impaired listeners

The Journal of the Acoustical Society of America, Jan 1, 2010

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Investigating temporal asymmetry using masking period patterns and models of peripheral auditory processing

The Journal of the Acoustical Society of America, Jan 1, 2011

Bookmarks Related papers MentionsView impact