Emotions have strong effects on the voice production mechanisms and consequently characteristics. The magnitude of these effects, measured using source parameters, interdependencies among parameters not been examined. To better understand relationships, characteristics were analyzed in 10 actors' productions a sustained/a/vowel five emotions. Twelve acoustic studied grouped according to their physiological backgrounds, three related subglottal pressure, transglottal airflow waveform derived...

Impaired expression of emotion through pitch, loudness, rate, and rhythm speech (affective prosody) is common disabling after right hemisphere (RH) stroke. These deficits impede all social interactions. Previous studies have identified cortical areas associated with impairments expression, recognition, or repetition affective prosody, but not critical white matter tracts. We hypothesized that: 1) differences across patients in specific acoustic features correlate listener judgment prosody...

Although the neural basis for perception of vocal emotions has been described extensively, expression is almost unknown. Here, we asked participants both to repeat and express high-arousing angry vocalizations command (i.e., evoked expressions). First, repeated expressions elicited activity in left middle superior temporal gyrus (STG), pointing a short auditory memory trace repetition expressions. Evoked activated hippocampus, suggesting retrieval long-term stored scripts. Secondly, compared...

Previous research has shown that vocal errors can be simulated using a pitch perturbation technique. Two types of responses are observed when subjects asked to ignore changes in during steady vowel production, compensatory response countering the direction perceived change and following same as perturbation. The present study investigated nature these by asking volitionally their voice fundamental frequency either opposite ("opposing" group) or ("following" shifts (±100 cents, 1000 ms)...

No AccessPerspectives on Voice and DisordersArticle1 Jul 2007Perception of Dysphonic Vocal Quality: Some Thoughts Research Update Sona Patel, Rahul Shrivastav Patel Department Communication Sciences Disorders, University FloridaGainesville, FL Google Scholar https://doi.org/10.1044/vvd17.2.3 SectionsAboutFull TextPDF ToolsAdd to favoritesDownload CitationTrack Citations ShareFacebookTwitterLinked In References Camacho, A., & Shrivastav, R. (2006). Predicting changes in breathiness resulting...

In this experiment, a single comparison stimulus was developed as reference in perceptual matching task for the quantification of breathy voice quality. Perceptual judgments set synthetic samples were compared to previous data obtained using multiple stimuli "customized" different voices (Patel, Shrivastav, & Eddins, 2010).Five male and 5 female vowel /a/ selected from Kay Elemetrics Disordered Voice Database resynthesized Klatt synthesizer. Eleven created each base by manipulating...

The perception of breathiness in vowels is cued by multiple acoustic cues, including changes aspiration noise (AH) and the open quotient (OQ) [Klatt Klatt, J. Acoust. Soc. Am. 87(2), 820–857 (1990)]. A loudness model can be used to determine extent which AH masks harmonic components voice. resulting “partial loudness” (PL) [“noise (NL)] have been shown good predictors perceived [Shrivastav Sapienza, 114(1), 2217–2224 (2003)]. levels OQ were systematically manipulated for ten synthetic...

Purpose Perceptual estimates of voice quality obtained using rating scales are subject to contextual biases that influence how individuals assign numbers estimate the magnitude vocal quality. Because commonly used in clinical settings, assessments also limitations these scales. Instead, a matching task can be obtain objective measures quality, thereby facilitating model development and tools for use. Method Twenty-seven participated or at least 1 3 tests (named after their modulation...

Acoustic models of emotions may benefit from considering the underlying voice production mechanism.This study sought to describe emotional expressions according physiological variations measured inverse-filtered glottal waveform in addition standard parameter extraction.An acoustic analysis was performed on a subset /a/ vowels within GEMEP database (10 speakers, 5 emotions).Of 12 features computed, repeated measures ANOVA showed significant main effects for 11 parameters.Subsequent principal...

Research has shown that people who are instructed to volitionally respond pitch-shifted feedback either produce responses follow the shift direction with a short latency of 100–200 ms or oppose longer latencies 300–400 ms. This difference in response prompted comparison three groups vocalists differing abilities, non-trained English-speaking subjects, Mandarin-speaking and trained singers. All subjects produced following long opposing responses, most cases were preceded by shorter response....

The pitch perturbation technique is a validated that has been used for over 30 years to understand how people control their voice. This involves altering person's voice in real-time while they produce vowel (commonly, prolonged /a/ sound). Although post-task changes the have observed several studies (e.g., change mean fo across duration of experiment), potential using as training tool regulation and/or modification not explored. present study examined event related potentials (ERPs) and...

Alterations in speech have long been identified as indicators of various neurologic conditions including traumatic brain injury, neurodegenerative diseases, and stroke. The extent to which errors occur milder injuries, such sports-related concussions, is unknown. present study examined error rates student athletes after a concussion compared pre-injury performance order determine the presence relevant characteristics changes production this less easily detected condition.A within-subjects...

Models of emotional prosody based on perception have typically required listeners to rate expressions according the psychological dimensions (arousal, valence, and power). We propose a perception-based model without assuming that are those used by differentiate prosody. Instead, multidimensional scaling is identify three perceptual dimensions, which then regressed onto dynamic feature set does not require training or normalization speaker’s “neutral” expression. The predictions for...

Parkinson’s disease often results in a hypokinetic dysarthria, causing well-known effects on speech and voice. Speech from individuals with is typically studied through listening tasks (i.e., by family members naïve listeners) known to affect intelligibility. However, the exact changes degradations quality have not been defined. Previous investigations focused standard measures of mean fundamental frequency, intensity, rate. We hypothesize that are present at prosodic level addition acoustic...

Abstract Individuals with Parkinson's disease (PD) exhibit a variety of impairments in nonmotor symptoms including emotional processing and cognitive control that have implications for speech production. The present study sought to investigate whether individuals PD impact sentence production as indicated by changes rate. Thirty-six (20 PD, 16 healthy controls) completed subtests 8A 8B the Florida Emotional Expressive Battery (FEEB) elicit samples five different tones (happy, sad, angry,...