Journal of Speech Language and Hearing Research, 2016
Purpose The question of what type of utterance—a sustained vowel or continuous speech—is best for... more Purpose The question of what type of utterance—a sustained vowel or continuous speech—is best for voice quality analysis has been extensively studied but with equivocal results. This study examines whether previously reported differences derive from the articulatory and prosodic factors occurring in continuous speech versus sustained phonation. Method Speakers with voice disorders sustained vowels and read sentences. Vowel samples were excerpted from the steadiest portion of each vowel in the sentences. In addition to sustained and excerpted vowels, a 3rd set of stimuli was created by shortening sustained vowel productions to match the duration of vowels excerpted from continuous speech. Acoustic measures were made on the stimuli, and listeners judged the severity of vocal quality deviation. Results Sustained vowels and those extracted from continuous speech contain essentially the same acoustic and perceptual information about vocal quality deviation. Conclusions Perceived and/or m...
Problem Videostroboscopy is a valuable diagnostic tool in laryngology and voice disorders, offeri... more Problem Videostroboscopy is a valuable diagnostic tool in laryngology and voice disorders, offering additional information about vocal fold vibration that standard examination cannot detect. However, videostroboscopic data reported in current literature varies widely between authors. This study summarizes the applications of stroboscopy in recent research, and identifies reported stroboscopic parameters. Given the apparent lack of consensus, we consider the indications for and meaningful interpretation of videostroboscopy. Methods Review of 133 articles obtained from a Pubmed search with keywords “stroboscopy” and “voice” and limited to the English language and human subjects. Results Stroboscopy was reported in diverse clinical situations including paralysis, sulcus, benign glottic lesions, dysphonia, and in normal subjects. Most studies did not use a validated stroboscopy evaluation scale, instead choosing unique evaluation points. The numerous descriptive terms could be grouped into a few general parameters. The only parameter addressed in all articles was vocal fold closure, but with various differing criteria rating the quality or configuration of closure. Other common parameters included the mucosal wave, supraglottic effort, and vibration. However, mucosal wave symmetry and regularity of vibration were not universally addressed. Voice outcomes, if measured, were commonly reported without correlation to stroboscopic findings. Conclusion Recent literature presents diverse approaches to videostroboscopy. Some studies conducted a thorough examination of stroboscopic parameters, but others neglected key points. Stroboscopy was performed in several reports of glottic mass lesions or unilateral paralysis, even though vibratory dysfunction may be dwarfed relative to those greater derangements in causing dysphonia. Significance We submit a set of parameters for thorough videostroboscopy evaluation. We stress that videostroboscopy must be considered in the context of the voice and standard laryngeal exam.
Revised February, 2006 Analysis and Synthesis of Pathological Voice Quality by Jody Kreiman Bruce... more Revised February, 2006 Analysis and Synthesis of Pathological Voice Quality by Jody Kreiman Bruce R. Gerratt Norma Antoñanzas-Barroso Bureau of Glottal Affairs Division of Head/Neck Surgery UCLA School of Medicine 31-24 Rehab Center Los Angeles, CA 90095-1794 ...
Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery, 1983
An automated computer system was used to measure changes in vocal quality resulting from laryngea... more An automated computer system was used to measure changes in vocal quality resulting from laryngeal surgery. Five acoustic parameters were computed and seven listeners made judgments on vowel samples recorded before and after surgery from 37 patients. Presurgery and postsurgery changes in the five acoustic measures were compared with the perception of change in vocal harshness. A multiple regression analysis showed that four of the five acoustic measures accounted for a large amount of the variance in the judgment of change of voice quality following surgery. The measures may provide a quick and relatively sensitive method that may be clinically useful in measuring change in vocal quality.
... range of disciplines, and topics related to the perception and measurement of voice quality .... more ... range of disciplines, and topics related to the perception and measurement of voice quality ... How are mood, motivation, and emotion related to vocal cues in brain organization? ... Measuring vocal quality is therefore important for understanding speech perception as well as many ...
Problem Videostroboscopy is a valuable diagnostic tool in laryngology and voice disorders, offeri... more Problem Videostroboscopy is a valuable diagnostic tool in laryngology and voice disorders, offering additional information about vocal fold vibration that standard examination cannot detect. However, videostroboscopic data reported in current literature varies widely between authors. This study summarizes the applications of stroboscopy in recent research, and identifies reported stroboscopic parameters. Given the apparent lack of consensus, we consider the indications for and meaningful interpretation of videostroboscopy. Methods Review of 133 articles obtained from a Pubmed search with keywords “stroboscopy” and “voice” and limited to the English language and human subjects. Results Stroboscopy was reported in diverse clinical situations including paralysis, sulcus, benign glottic lesions, dysphonia, and in normal subjects. Most studies did not use a validated stroboscopy evaluation scale, instead choosing unique evaluation points. The numerous descriptive terms could be grouped i...
The Journal of the Acoustical Society of America, 2012
ABSTRACT Many models of the glottal source have been proposed, but none has been systematically v... more ABSTRACT Many models of the glottal source have been proposed, but none has been systematically validated perceptually, so that it is unclear whether deviations from perfect fit have perceptual importance. If model fit fails in ways that have no perceptual significance, such "errors" can be ignored, but poor fit with respect to perceptually-important features has both theoretical and practical importance. To address this issue, we fit 6 different source models to 40 natural voice sources, and then evaluated fit with respect to time-domain landmarks on the source waveforms and details of the harmonic voice source spectrum. We also generated synthetic copies of the voices using each modeled source pulse, with all other synthesizer parameters held constant, and then conducted a visual sort-and-rate task in which listeners assessed the extent of perceived match between the original natural voice samples and each copy. Discussion will focus on the specific strengths and weaknesses of each modeling approach for characterizing differences in vocal quality. [Work supported by NIH/NIDCD grant DC01797 and NSF grant IIS-1018863.].
Journal of Speech Language and Hearing Research, 2016
Purpose The question of what type of utterance—a sustained vowel or continuous speech—is best for... more Purpose The question of what type of utterance—a sustained vowel or continuous speech—is best for voice quality analysis has been extensively studied but with equivocal results. This study examines whether previously reported differences derive from the articulatory and prosodic factors occurring in continuous speech versus sustained phonation. Method Speakers with voice disorders sustained vowels and read sentences. Vowel samples were excerpted from the steadiest portion of each vowel in the sentences. In addition to sustained and excerpted vowels, a 3rd set of stimuli was created by shortening sustained vowel productions to match the duration of vowels excerpted from continuous speech. Acoustic measures were made on the stimuli, and listeners judged the severity of vocal quality deviation. Results Sustained vowels and those extracted from continuous speech contain essentially the same acoustic and perceptual information about vocal quality deviation. Conclusions Perceived and/or m...
Problem Videostroboscopy is a valuable diagnostic tool in laryngology and voice disorders, offeri... more Problem Videostroboscopy is a valuable diagnostic tool in laryngology and voice disorders, offering additional information about vocal fold vibration that standard examination cannot detect. However, videostroboscopic data reported in current literature varies widely between authors. This study summarizes the applications of stroboscopy in recent research, and identifies reported stroboscopic parameters. Given the apparent lack of consensus, we consider the indications for and meaningful interpretation of videostroboscopy. Methods Review of 133 articles obtained from a Pubmed search with keywords “stroboscopy” and “voice” and limited to the English language and human subjects. Results Stroboscopy was reported in diverse clinical situations including paralysis, sulcus, benign glottic lesions, dysphonia, and in normal subjects. Most studies did not use a validated stroboscopy evaluation scale, instead choosing unique evaluation points. The numerous descriptive terms could be grouped into a few general parameters. The only parameter addressed in all articles was vocal fold closure, but with various differing criteria rating the quality or configuration of closure. Other common parameters included the mucosal wave, supraglottic effort, and vibration. However, mucosal wave symmetry and regularity of vibration were not universally addressed. Voice outcomes, if measured, were commonly reported without correlation to stroboscopic findings. Conclusion Recent literature presents diverse approaches to videostroboscopy. Some studies conducted a thorough examination of stroboscopic parameters, but others neglected key points. Stroboscopy was performed in several reports of glottic mass lesions or unilateral paralysis, even though vibratory dysfunction may be dwarfed relative to those greater derangements in causing dysphonia. Significance We submit a set of parameters for thorough videostroboscopy evaluation. We stress that videostroboscopy must be considered in the context of the voice and standard laryngeal exam.
Revised February, 2006 Analysis and Synthesis of Pathological Voice Quality by Jody Kreiman Bruce... more Revised February, 2006 Analysis and Synthesis of Pathological Voice Quality by Jody Kreiman Bruce R. Gerratt Norma Antoñanzas-Barroso Bureau of Glottal Affairs Division of Head/Neck Surgery UCLA School of Medicine 31-24 Rehab Center Los Angeles, CA 90095-1794 ...
Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery, 1983
An automated computer system was used to measure changes in vocal quality resulting from laryngea... more An automated computer system was used to measure changes in vocal quality resulting from laryngeal surgery. Five acoustic parameters were computed and seven listeners made judgments on vowel samples recorded before and after surgery from 37 patients. Presurgery and postsurgery changes in the five acoustic measures were compared with the perception of change in vocal harshness. A multiple regression analysis showed that four of the five acoustic measures accounted for a large amount of the variance in the judgment of change of voice quality following surgery. The measures may provide a quick and relatively sensitive method that may be clinically useful in measuring change in vocal quality.
... range of disciplines, and topics related to the perception and measurement of voice quality .... more ... range of disciplines, and topics related to the perception and measurement of voice quality ... How are mood, motivation, and emotion related to vocal cues in brain organization? ... Measuring vocal quality is therefore important for understanding speech perception as well as many ...
Problem Videostroboscopy is a valuable diagnostic tool in laryngology and voice disorders, offeri... more Problem Videostroboscopy is a valuable diagnostic tool in laryngology and voice disorders, offering additional information about vocal fold vibration that standard examination cannot detect. However, videostroboscopic data reported in current literature varies widely between authors. This study summarizes the applications of stroboscopy in recent research, and identifies reported stroboscopic parameters. Given the apparent lack of consensus, we consider the indications for and meaningful interpretation of videostroboscopy. Methods Review of 133 articles obtained from a Pubmed search with keywords “stroboscopy” and “voice” and limited to the English language and human subjects. Results Stroboscopy was reported in diverse clinical situations including paralysis, sulcus, benign glottic lesions, dysphonia, and in normal subjects. Most studies did not use a validated stroboscopy evaluation scale, instead choosing unique evaluation points. The numerous descriptive terms could be grouped i...
The Journal of the Acoustical Society of America, 2012
ABSTRACT Many models of the glottal source have been proposed, but none has been systematically v... more ABSTRACT Many models of the glottal source have been proposed, but none has been systematically validated perceptually, so that it is unclear whether deviations from perfect fit have perceptual importance. If model fit fails in ways that have no perceptual significance, such "errors" can be ignored, but poor fit with respect to perceptually-important features has both theoretical and practical importance. To address this issue, we fit 6 different source models to 40 natural voice sources, and then evaluated fit with respect to time-domain landmarks on the source waveforms and details of the harmonic voice source spectrum. We also generated synthetic copies of the voices using each modeled source pulse, with all other synthesizer parameters held constant, and then conducted a visual sort-and-rate task in which listeners assessed the extent of perceived match between the original natural voice samples and each copy. Discussion will focus on the specific strengths and weaknesses of each modeling approach for characterizing differences in vocal quality. [Work supported by NIH/NIDCD grant DC01797 and NSF grant IIS-1018863.].
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Papers by Bruce Gerratt