Acoustic characteristics of rough voice: Subharmonics

Omori, Koichi; Kojima, Hisayoshi; Kakani, R. K.; Slavit, David H.; Blaugrund, Stanley M.

doi:10.1016/s0892-1997(97)80022-7

Cited by 52 publications

(24 citation statements)

References 8 publications

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“…Thus phonation that is ''perceptually stable'' with respect to one quality is not necessarily ''perceptually simple.'' In the case of roughness, vocal fry and bifurcated phonation are also well-defined physiologically and acoustically ͑e.g., Hollien et al, 1966Hollien et al, , 1977Herzel et al, 1991;Berry et al, 1996;Omori et al, 1997͒, and are well-distinguished perceptually from each other and from modal phonation ͑Hollien and Wendahl, 1968;Michel and Hollien, 1968;Omori et al, 1997;see Gerratt and Kreiman, 2000, for review͒. Apparently these kinds of phonation are both associated with the label ''rough,'' which is also significantly confounded with overall severity of pathology.…”

Section: Discussionmentioning

confidence: 99%

Sources of listener disagreement in voice quality assessment

Kreiman¹,

Gerratt²

2000

The Journal of the Acoustical Society of America

124

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Traditional interval or ordinal rating scale protocols appear to be poorly suited to measuring vocal quality. To investigate why this might be so, listeners were asked to classify pathological voices as having or not having different voice qualities. It was reasoned that this simple task would allow listeners to focus on the kind of quality a voice had, rather than how much of a quality it possessed, and thus might provide evidence for the validity of traditional vocal qualities. In experiment 1, listeners judged whether natural pathological voice samples were or were not primarily breathy and rough. Listener agreement in both tasks was above chance, but listeners agreed poorly that individual voices belonged in particular perceptual classes. To determine whether these results reflect listeners' difficulty agreeing about single perceptual attributes of complex stimuli, listeners in experiment 2 classified natural pathological voices and synthetic stimuli ͑varying in f 0 only͒ as low pitched or not low pitched. If disagreements derive from difficulties dividing an auditory continuum consistently, then patterns of agreement should be similar for both kinds of stimuli. In fact, listener agreement was significantly better for the synthetic stimuli than for the natural voices. Difficulty isolating single perceptual dimensions of complex stimuli thus appears to be one reason why traditional unidimensional rating protocols are unsuited to measuring pathologic voice quality. Listeners did agree that a few aphonic voices were breathy, and that a few voices with prominent vocal fry and/or interharmonics were rough. These few cases of agreement may have occurred because the acoustic characteristics of the voices in question corresponded to the limiting case of the quality being judged. Values of f 0 that generated listener agreement in experiment 2 were more extreme for natural than for synthetic stimuli, consistent with this interpretation.

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Section: Discussionmentioning

confidence: 99%

Sources of listener disagreement in voice quality assessment

Kreiman¹,

Gerratt²

2000

The Journal of the Acoustical Society of America

124

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“…Past studies of the dynamics of asymmetric vocal folds which have employed simple structural and/or flow models have indicated that period-doubling bifurcations can occur in such configurations ͑Steinecke and Herzel, 1995͒. Subharmonics have also been detected in sound spectra ͑Herzel et Omori et al, 1997;Wilden et al, 1998͒ which might be indicative of period-doubling bifurcations. Strong subharmonics might also be implicated in diplophonia.…”

Section: Period-doubling Bifurcationmentioning

confidence: 99%

A computational study of the effect of vocal-fold asymmetry on phonation

Xue

Mittal

Zheng

et al. 2010

The Journal of the Acoustical Society of America

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Unilateral laryngeal paralysis leads to tension imbalance and hence to asynchronous movements between the two vocal folds during phonation. In the current study, a computational model of phonation that couples a two-mass model of the vocal folds with a Navier-Stokes model of the glottal airflow, has been used to examine the dynamics of vocal fold configurations with tension imbalance and its implications for phonation. The simulations show that tension imbalance influences phonation onset, intensity as well as the fundamental phonation frequency. Distinct non-linear effects such as period-doubling bifurcation and preferential frequency selection are also observed.

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“…Perceived roughness has been linked with high fundamental frequency (F 0 ) perturbation [15][16][17], and contradictorily, with the absence of such perturbation [18][19][20]. It has been shown that perception of this vocal quality is affected by the relation between frequency perturbation (jitter) and F 0 ; that is to say, in cases where there are two voices or stimuli with high perturbation frequency values, the one with lower F 0 will be perceived as being rougher [1,3,18,21,22].…”

Section: Introductionmentioning

confidence: 99%

Acoustic and Perceptual Indicators of Normal and Pathological Voice

Muñoz

Mendoza

Fresneda

et al. 2003

Folia Phoniatr Logop

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The aim of this study was to obtain acoustic correlates to vocal quality of a group of men and women with and without voice disorders, based on evaluations of a group of judges experienced in the field of vocal rehabilitation. In male subjects, perceptual evaluation of normal, hoarse and rough voice qualities was related to the following acoustic features: frequency perturbation measures (JITA, RAP, and SPPQ), amplitude perturbation (SAPQ and VAM), soft phonation index (SPI) and fundamental frequency tremor intensity (FTRI). While these measures presented normal values for normal voice, hoarseness showed some deviations in perturbation frequency variables and very high SPI values, while rough voice showed deviations in all the measures. Qualities of female voices were perceived as normal, breathy and hoarse, but the acoustic correlates of these qualities were less conclusive.

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Acoustic characteristics of rough voice: Subharmonics

Cited by 52 publications

References 8 publications

Sources of listener disagreement in voice quality assessment

Sources of listener disagreement in voice quality assessment

A computational study of the effect of vocal-fold asymmetry on phonation

Acoustic and Perceptual Indicators of Normal and Pathological Voice

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