OBJECTIVE To assess the effects of chronic tonsillitis with or without adenoiditis and the effects of tonsillectomy with or without adenoidectomy on the voice by means of acoustic analysis. DESIGN Prospective case-control study. SETTING Yenepoya Medical College Hospital, a tertiary referral hospital. PATIENTS Patients 5 to 26 years old with chronic tonsillitis with or without adenoiditis....

The measurement of glottal noise was investigated in human and synthesized dysphonic voices by means of two-dimensional (2D) speech processing. A prime objective was the reduction of measurement sensitivities to fundamental frequency (f0) tracking errors and phonatory aperiodicities. An available fingerprint image enhancement algorithm was used for signal-to-noise measurement in narrow band spe...

UNLABELLED Studies have established that normative data is necessary for acoustic analysis. The aim of the present study is to standardize fundamental frequency measures (fo), jitter, shimmer and harmonic-noise ratio (HNR) for young adults with normal voice. METHOD 20 males and 20 females, between 20 and 45 years, without signs and symptoms of vocal problems; CSL-4300 Kay-Elemetrics; vowels /...

Objectives: The present study aims to compare acoustic voice parameters in patients with vocal cord nodules, polyps, and normal subjects.  Methods: In this cross-sectional case-control study, the participants were selected by convenience sampling, including 30 patients with vocal polyps group, 38 patients with vocal nodules for the second group, and 42 participants without voice pathologies a...

We propose a glottal source estimation method robust to shimmer and jitter in the glottal flow. The proposed estimation method is based on a joint source-filter optimization technique. The glottal source is modeled by the Liljencrants–Fant (LF) model and the vocaltract filter is modeled by an auto-regressive filter, which is common in the source-filter approach to speech production. The optimiz...

Communication will be intelligible when conveyed message is interpreted in right-minded. Unfortunately, the rightminded interpretation of communicated message is possible for human-human communication but it’s laborious for humanmachine communication. It is due to the inherently blending of non-verbal contents such as emotion in vocal communication which leads to difficulty in human-machine int...

Speech can be described as an act of producing voice through the use of the vocal folds and vocal apparatus to create a linguistic act for conveying intended information. Speech is a subtle and rich communication that transfers not only the linguistic information, but also information about the personality and the emotional state of the speaker. The objective of this study is to analyse the eff...

Vocal warm-ups are widespread and comprehensive in the singing community. Although it is well recognised practised by professionals, sometimes bypassed neglected singers voice teachers. The objective of this study to assess impact vocal warm-up on quality through acoustic parameters jitter (%), shimmer harmonics-to-noise (HNR [dB]) two-pitch conditions, A3 (chest register) C5 (head register), b...

Parkinson’s disease (PD) is a chronic neuro-degenerative disorder caused by the damage or loss of dopamine producing cells in the substantia nigra of the brain. This deficiency in the dopamine affects the neurotransmitter systems which are responsible for a variety of motor and non-motor deficits. The motor and non-motor deficits involve areas such as speech, EEG, gait, mood, sensation, thinkin...

Longitudinal changes were investigated for selected voice source parameters: fundamental frequency (F0), jitter (period perturbation quotient, PPQ), shimmer (amplitude perturbation quotient, APQ) and glottal noise (normalized noise energy, NNE). Acoustic analyses were made on the sustained phonation of the Japanese vowel /a/ of 20 males and 38 females with no laryngeal disease, which were recor...