Purpose: This study examined the relationship between voice quality and glottal geometry dynamics in patients with adductor spasmodic dysphonia (ADSD). Method: An objective computer vision and machine learning system was developed to extract glottal geometry dynamics from nasolaryngoscopic video recordings for 78 patients with ADSD. General…

Introduction: Speech Language Therapy First Point of Contact Clinic (SLT-FPOCC) models can assist assessment of low-risk patient populations referred to ear, nose and throat (ENT) services. To further improve ENT waitlist management and compliance with best-practice care, consideration of other low-risk populations that could be safely managed…

Purpose: Auditory-perceptual evaluation is essential for the assessment of voice quality. The Consensus Auditory-Perceptual Evaluation of Voice (CAPE-V) provides a standardized protocol and assessment form for clinicians to analyze the voice quality and has been adapted into several different languages. The aims of this study were to develop the…

Purpose: Laryngeal high-speed videoendoscopy (LHSV) has been recognized as a highly valuable modality for the scientific investigations of vocal fold (VF) vibrations. In contrast to stroboscopic imaging, LHSV enables visualizing aperiodic VF vibrations. However, the technique is less well established in the clinical care of disordered voices,…

Background: Published best-practice guidelines and standardized protocols for voice assessment recommend multidisciplinary evaluation utilizing a comprehensive range of clinical measures. Previous studies report variations in assessment practices when compared with these guidelines. Aims: To provide an up-to-date evaluation of current global…

Purpose: Vocal roughness is often present in many voice disorders but the assessment of roughness mainly depends on the subjective auditory-perceptual evaluation and lacks acoustic correlates. This study aimed to apply the concept of roughness in general sound quality perception to vocal roughness assessment and to characterize the relationship…

Purpose: Assessment of strained voice quality is difficult due to the weak reliability of auditory-perceptual evaluation and lack of strong acoustic correlates. This study evaluated the contributions of relative fundamental frequency (RFF) and mid-to-high frequency noise to the perception of strain. Method: Stimuli were created using recordings of…

Background: Articulatory excursion and vocal intensity are reduced in many children with dysarthria due to cerebral palsy (CP), contributing to the children's intelligibility deficits and negatively affecting their social participation. However, the effects of speech-treatment strategies for improving intelligibility in this population are…

Background: Altered auditory feedback can facilitate speech fluency in adults who stutter. However, other findings suggest that adults who stutter show anomalies in "audiovocal integration", such as longer phonation reaction times to auditory stimuli and less effective pitch tracking. Aims: To study audiovocal integration in adults who stutter…

Evaluation of the /a/ and /i/ sounds of 51 adult subjects with various laryngeal disorders indicated that spectrographic noise and curvilinear derivatives of the period standard deviation provided the best predictions of disorder severity. (Author/DB)

Background: Many speech and language therapists work in a multilingual environment, making cross-linguistic studies of speech disorders clinically and theoretically important. Aims: To investigate the effect of listeners' linguistic background on their perceptual ratings of hypernasality and the reliability of the ratings. Methods &…

Two experiments were conducted to assess the correlations of residue features with some perceptual properties of voice disorders. Results suggested that residue features may be useful in assessing the degree of vocal impairment, but use of residue features as correlates of voice quality requires further research. (Author/DB)

In order to better evaluate students with voice disorders, maximum and mean phonation times as a function of coaching were obtained from 28 nonhandicapped third-grade girls. Coaching during the voiced prolongations produced significantly longer maximum and mean phonation times but did not reduce within-subject variability. (Author/DB)

Mean fundamental frequencies of 33 male and female Ss (ages 18 to 42) obtained with FLORIDA I (another method to determine fundamental frequencies) and a tape striation counting procedure were compared. The fundamental frequencies obtained with these two methods were similar and it appears that the tape striation counting procedure is a viable,…

This study, involving 20 adults, introduced a relative target method to examine the fine force control characteristics of the lips. Load equalization for each lip was accomplished by establishing four submaximal target levels related to maximum voluntary closing force. The upper lip was found to be more stable in controlling force at all levels.…