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Brad Story is a Professor of Speech, Language, and Hearing Sciences. After receiving his Bachelor’s degree in Applied Physics from the University of Northern Iowa, Dr. Story was employed in industry as an acoustics engineer where he developed computer models and instrumentation systems for designing and measuring the performance of mufflers. Odd as it may seem, Dr. Story’s work with mufflers (or acoustic filters as he prefers to call them) led him to pursue a doctoral degree in Speech and Hearing Science at the University of Iowa. In his post-doctoral work he has been employed as a Research Scientist at the University of Iowa and most recently at the Wilbur James Gould Voice Center in Denver, Colorado.Show Less
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Courses
- APSMAnatomy and Physiology of the Speech Mechanism
- ASHSAcoustics for the Speech and Hearing Sciences
- HSHearing Science
- SSSpeech Science
- PSSPreclinical Speech Science
- APSAcoustics and Perception of Speech
- SPSpeech Perception
Grants
- Synchronization of Sound Source with Airway Resonances
Principal Investigator (PI)
2019
$220.7K
Active - MRI & CT Studies of the Developing Vocal Tract
Principal Investigator (PI)
2014
$32.3K
- A Model of Sound Production in Children
Principal Investigator (PI)
2012
$253.3K
- Modulation of the Voice Related to Tremor and Vibrato
Co-Investigator (COI)
2012
$71.7K
- An Acoustic Model of Child-Like Speech
Principal Investigator (PI)
2011
$1.6M
- Kinematic Modeling of Asymmetric Vocal Fold Vibration
Co-Investigator (COI)
2010
$73.3K
- High-frequency Energy in Speech and Voice
Key Personnel (KP)
2010
$55.7K
- Quantitative Modeling of Speech
Principal Investigator (PI)
2006
$1.3M
News
- Researchers Solve Mystery of Tuvan Throat Singing
2020
- NIH Training Grant Awarded to Speech, Language and Hearing Sciences
2008
- UA is National Highlight During Better Hearing & Speech Month
2001
Publications (185)
Recent
- Acoustical Theory of Vowel Modification Strategies in Belting
2023
- Harmonics-to-noise ratio estimation with deterministically time-varying harmonic model for pathological voice signals
2022
- Computer simulation of vocal tract resonance tuning strategies with respect to fundamental frequency and voice source spectral slope in singing
2022
- High-Resolution Three-Dimensional Hybrid MRI + Low Dose CT Vocal Tract Modeling: A Cadaveric Pilot Study
2022
- Examining speech motor planning difficulties in apraxia of speech and aphasia via the sequential production of phonetically similar words.
2021
- The relation of velopharyngeal coupling area to the identification of stop versus nasal consonants in North American English based on speech generated by acoustically driven vocal tract modulations
2021
- Anatomic development of the upper airway during the first five years of life: A three-dimensional imaging study
2021
- Identification of voiced stop consonants produced by acoustically-driven vocal tract modulations
2020
- Effects of sampling rate and type of anti-aliasing filter on linear-predictive estimates of formant frequencies in men, women, and children.
2020
- Overtone focusing in biphonic tuvan throat singing
2020
- Time-Varying Quasi-Closed-Phase Analysis for Accurate Formant Tracking in Speech Signals
2020
- Prediction of listener perception of place-of-articulation in reduced speech
2019
- Author response: Overtone focusing in biphonic tuvan throat singing
2019
- OPENGLOT – An open environment for the evaluation of glottal inverse filtering
2019
- Time-varying quasi-closed-phase analysis for accurate formant tracking in speech signals.
2019
- A model of speech production based on the acoustic relativity of the vocal tract
2019
- Estimation of the glottal source from coded telephone speech using deep neural networks
2019
- Speech motor planning in the context of phonetically similar words: Evidence from apraxia of speech and aphasia
2019
- Estimation of the glottal flow from speech pressure signals: Evaluation of three variants of iterative adaptive inverse filtering using computational physical modelling of voice production
2018
- Acoustic communication by vocal tract modulation
2018
- Influence of left-right vocal fold asymmetries on voice quality in simulated paramedian vocal fold paralysis
2017
- An acoustically-driven vocal tract model for stop consonant production
2017
- Vocal tract growth model for males and females using area function transformations based on anatomic measurements
2017
- Stories of speech science
2017
- Vowel space density as an indicator of speech performance
2017
- The effects of physiological adjustments on the perceptual and acoustical characteristics of vibrato as a model of vocal tremor.
2016
- Prediction of listener perception of reduced, voice stop consonant simulations based on patterns of formant deflections
2016
- A modeling study of the effects of vocal tract movement duration and magnitude on the F2 trajectory in CV words
2016
- Formant measurement in children’s speech based on spectral filtering
2016
- Identification of stop consonants produced by an acoustically-driven model of a child-like vocal tract
2016
- Arizona Child Acoustic Database Repository
2016
- The role of artificial speech in understanding the acoustic characteristics of spoken communication
2016
- Acoustic modeling of the perception of place information in incomplete stops
2015
- The effects of physiological adjustments on the perceptual and acoustical characteristics of simulated laryngeal vocal tremor
2015
- Toward a consensus on symbolic notation of harmonics, resonances, and formants in vocalization
2015
- Ken Stevens’ influence on the development of paradigms for speech synthesis
2015
- A spectral filtering method for tracking formants in children’s speech
2015
- 3 Mechanisms of Voice Production
2015
- Eerie voices: Odd combinations, extremes, and irregularities
2014
- The perceptual significance of high-frequency energy in the human voice
2014
- Quasi closed phase glottal inverse filtering analysis with weighted linear prediction
2014
- Acoustical bases for the perception of simulated laryngeal vocal tremor
2014
- A New Algorithm for Vocal Tract Shape Extraction from Singer's Waveforms
2014
- Speech spectral intensity discrimination at frequencies above 6 kHz
2014
- Structure, Movement, Sound, and Perception
2014
- Acoustic and Perceptual Effects of Left--Right Laryngeal Asymmetries Based on Computational Modeling
2014
- Detection of high-frequency energy level changes in speech and singing
2014
- Automatic glottal inverse filtering with the Markov chain Monte Carlo method
2014
- Gender and vocal production mode discrimination using the high frequencies for speech and singing
2014
- Discriminating Simulated Vocal Tremor Source Using Amplitude Modulation Spectra
2014
- Estimation of vocal tract area functions in children based on measurement of lip termination area and inverse acoustic mapping
2013
- Production of child-like vowels with nonlinear interaction of glottal flow and vocal tract resonances
2013
- Acoustic characteristics of respiratory-induced vocal tremor
2013
- Acoustic characteristics of simulated respiratory-induced vocal tremor
2013
- Joint source-filter optimization for accurate vocal tract estimation using differential evolution
2013
- Physiologic and acoustic patterns of essential vocal tremor
2013
- The academic family tree of Ingo Titze
2013
- Phrase-level speech simulation with an airway modulation model of speech production
2013
- Simulation and identification of vowels based on a time-varying model of the vocal tract area function
2013
- Formant frequency estimation of high-pitched vowels using weighted linear prediction
2013
- Quasi closed phase analysis for glottal inverse filtering.
2013
- Relation of perceived breathiness to laryngeal kinematics and acoustic measures based on computational modeling
2013
- Acknowledgment of Guest Reviewers
2013
- Discriminating vocal tremor source from amplitude envelope modulations
2012
- “Talker normalization” effects elicited with no change in talker
2012
- Analysis of high-frequency energy in long-term average spectra of singing, speech, and voiceless fricatives
2012
- The relation of nasality and nasalance to nasal port area based on a computational model
2012
- Analysis of high-frequency energy in singing and speech
2012
- Horizontal directivity of low- and high-frequency energy in speech and singing
2012
- Improved formant frequency estimation from high-pitched vowels by downgrading the contribution of the glottal source with weighted linear prediction
2012
- Decomposition of vowel and consonant contributions to the time-varying vocal tract shape.
2011
- Perception of high-frequency energy in singing and speech.
2011
- TubeTalker: An airway modulation model of human sound production
2011
- Relation of structural and vibratory kinematics of the vocal folds to two acoustic measures of breathy voice based on computational modeling
2011
- An overview of acoustic research in Speech Communication.
2011
- Source-vocal tract interaction in female operatic singing and theater belting, J
2011
- Perceptually relevant information in energy above 5 kHz for speech and singing
2011
- A test of formant frequency analyzes with simulated child-like vowels.
2011
- Source-Vocal Tract Interaction in Female Operatic Singing and Theater Belting
2011
- Conceptual and clinical updates on vocal tremor
2010
- Identification of synthetic vowels based on a time-varying model of the vocal tract area function
2010
- Predicting the effect of talker differences on perceived vowel category.
2010
- Relation of vocal tract shape, formant transitions, and stop consonant identification
2010
- Erratum: A parametric model of the vocal tract area function for vowel and consonant production (Journal of the Acoustical Society of America (2005) 117, (3231-3254))
2009
- Kinematic modeling and acoustic measures of breathy voice.
2009
- Identification of synthetic vowels based on time-varying vocal tract area functions.
2009
- Erratum:“A parametric model of the vocal tract area function for vowel and consonant production”[J. Acoust. Soc. Am., 117, 3231--3254 (2005)]
2009
- Vowel and consonant contributions to vocal tract shape
2009
- Vocal tract modes based on multiple area function sets from one speaker
2009
- Closed phase covariance analysis based on constrained linear prediction for glottal inverse filtering
2009
- Identification of synthetic vowels based on selected vocal tract area functions
2009
- A possible role of nonlinear source-filter interaction in simulation of childlike speech.
2009
- Relation of vocal tract constriction location to identification of voiced stop consonants.
2009
- Normalization for vocal tract differences using long term average spectrum
2009
- Advances in simulation of sentence-level speech production with kinematic models of the vocal tract and vocal folds.
2009
- Erratum: Respiratory and laryngeal function during spontaneous speaking in teachers with voice disorders (Journal of Speech, Language, and Hearing Research (2008), 51, 2, (333-349 10.1044/1092-4388(2008/025)).
2008
- Respiratory and laryngeal function during spontaneous speaking in teachers with voice disorders
2008
- Quantal events generated by the structural and temporal variation of the vocal tract.
2008
- Comparison of magnetic resonance imaging-based vocal tract area functions obtained from the same speaker in 1994 and 2002
2008
- Time dependence of vocal tract modes during production of vowels and vowel sequences
2007
- Acoustically‐guided vocal tract modifications for singing
2007
- Effects of intensive voice treatment (the Lee Silverman Voice Treatment [LSVT]) on vowel articulation in dysarthric individuals with idiopathic Parkinson disease: acoustic and perceptual findings
2007
- Effects of intensive voice treatment (LSVT®) on vowel articulation in dysarthric individuals with idiopathic Parkinson disease: Acoustic and perceptual findings
2007
- Effects of intensive voice treatment (the Lee Silverman voice treatment [LSVT]) on vowel articulation in dysarthric individuals with idiopathic Parkinson disease: Acoustic and perceptual findings (vol 50, pg 899, 2007)
2007
- Effects of binaural electronic hearing protectors on localization and response time to sounds in the horizontal plane
2007
- Erratum: Effects of intensive voice treatment (the Lee Silverman Voice Treatment [LSVT]) on vowel articulation in dysarthric individuals with idiopathic parkinson disease: Acoustic and perceptual findings (Journal of Speech, Language, and Hearing Research (2007), 50, PART 4, (899-912) DOI: 10.1044/1092-4388(2007/064))
2007
- A comparison of vocal tract perturbation patterns based on statistical and acoustic considerations
2007
- Source-vocal tract interaction in singing
2007
- Simulation and analysis of nasalized vowels based on magnetic resonance imaging data
2007
- Modification of emotional speech and voice quality based on changes to the vocal tract structure
2007
- The acoustic consequences of time-dependent changes of the vocal tract shape
2007
- Vocal-tract modeling: Fractional elongation of segment lengths in a waveguide model with half-sample delays
2006
- The relation of the temporal variation of F2 to articulator movement
2006
- Estimation of the voice source from speech pressure signals: Evaluation of an inverse filtering technique using physical modelling of voice production
2006
- Impact of intensive vocal loudness treatment (LSVT) on vowel articulation in Parkinsonian speech: Acoustic and perceptual findings
2006
- Technique for “tuning” vocal tract area functions based on acoustic sensitivity functions
2006
- Simulated effects of cricothyroid and thyroarytenoid muscle activation on adult-male vocal fold vibration
2006
- Listener perception of respiratory-induced voice tremor
2006
- Comparison of vocal tract shaping patterns derived from articulatory fleshpoint data and MRI-based area functions
2006
- Acoustically-guided articulation patterns for vowel production
2005
- Estimation of the voice source from speech pressure signals: evaluation of an inverse filtering technique using physical modelling of voice production.
2005
- A parametric model of the vocal tract area function for vowel and consonant simulation
2005
- Simulation and analysis of tremor in speech production
2005
- Synergistic modes of vocal tract articulation for American English vowels
2005
- On the ability of a physiologically constrained area function model of the vocal tract to produce normal formant patterns under perturbed conditions
2004
- Erratum: Effects of intensive voice treatment (the Lee Silverman Voice Treatment [LSVT]) on ataxic dysarthria: A case study (American Journal of Speech-Language Pathology (November 2003) (398))
2004
- The perception of two vocal qualities in a synthesized vocal utterance: Ring and pressed voice
2004
- Vowel acoustics for speaking and singing
2004
- A formant-to-area conversion technique based on acoustic sensitivity functions
2004
- Evaluation of an inverse filtering technique using physical modeling of voice production.
2004
- Effects of Intensive Voice Treatment (the Lee Silverman Voice Treatment [LSVT]) on Ataxic Dysarthria: A Case Study
2003
- Physical modeling of voice and voice quality
2003
- Simulation of VCV syllables with a parametric area function model of the vocal tract
2003
- An investigation of perceptual tolerance limits of stop constriction regions along the vocal tract
2003
- Vocal tract modeling: implementation of continuous length variations in a half-sample delay Kelly-Lochbaum model
2003
- Using imaging and modeling techniques to understand the relation between vocal tract shape to acoustic characteristics
2003
- Source and filter adjustments affecting the perception of the vocal qualities twang and yawn
2003
- A preliminary study of voice quality transformation based on modifications to the neutral vocal tract area function
2002
- A parametric area function model of three female vocal tracts based on orthogonal modes
2002
- A reflex resonance model of vocal vibrato
2002
- Rules for controlling low-dimensional vocal fold models with muscle activation
2002
- An overview of the physiology, physics and modeling of the sound source for vowels
2002
- Speech synthesis by mapping articulator movement patterns to a shape-based area function model of the vocal tract
2001
- The relationship of vocal tract shape to three voice qualities
2001
- A distinctive region model (DRM) based on empirical vocal tract area functions
2001
- Three-dimensional vocal tract imaging and formant structure: Varying vocal register, pitch, and loudness
2001
- An investigation of voice quality based on modifications of the neutral vocal tract shape
2000
- Comparison between electroglottography and electromagnetic glottography
2000
- Acoustic impedance of an artificially lengthened and constricted vocal tract
2000
- A study of compensation for a labial perturbation of the vowel/u/using an area function model of the vocal tract
2000
- A preliminary study of speech transformation using empirically defined articulatory modes
1999
- The acoustic analysis of reinforced harmonics
1999
- Vocal tract shape estimation using three noninvasive transducers
1998
- Parameterization of vocal tract area functions by empirical orthogonal modes
1998
- Synthesis of sentence-level speech based on measured vocal tract area functions
1998
- Simulation of sentence-level speech based on measured vocal tract area functions
1998
- Grenzen der Jitter-und Shimmer-Messung pathologischer Stimmen mit dem un\ uberwachten Waveform-Matching-Verfahren
1998
- Contributions of vocal tract shape to voice quality
1998
- Glottal source parameter estimation by comparison of measured signals with simulated signals
1998
- Vocal tract area functions for an adult female speaker based on volumetric imaging
1998
- A simplified model for the simulation and transformation of speech
1997
- Considerations in voice transformation with physiologic scaling principles
1997
- How parrots talk: Insights based on CT scans, image processing, and mathematical models
1997
- Volumetric image-based comparison of male and female vocal tract shapes
1997
- Advance table of contents
1997
- Acoustic interactions of the voice source with the lower vocal tract
1997
- Vocal tract imaging: a comparison of MRI and EBCT
1996
- Volumetric EBCT imaging of the vocal tract applied to male falsetto singing
1996
- LPC-based voice transformation from adult to child
1996
- Vocal tract area functions from magnetic resonance imaging
1996
- Comparison of three techniques for voice transformation
1996
- A simplified model for simulation and transformation of speech
1996
- Volumetric EBCT imaging of the vocal tract applied to male falsetto singing [2709-13]
1996
- Transformation from normal to twang and sob vocal qualities
1996
- Voice simulation with a body-cover model of the vocal folds
1995
- Speech simulation based on MR images of the vocal tract
1995
- A three-dimensional solution of the wave equation in a model of the vocal tract
1995
- Vocal tract shapes and area functions from magnetic resonance imaging (MRI)
1995
- Physiologically-Based Speech Simulation Using AN Enhanced Wave-Reflection Model of the Vocal Tract.
1995
- Speech simulation based on MR images of the vocal tract [2433-21]
1995
- Bifurcations in excised larynx experiments
1995
- Acoustics of the tenor high voice
1994
- Voice simulation with a three-mass model of the vocal folds
1993