Voice in its inherent nature is variable. It is natural to use the VBR class for voice, and transmit voice in its bursty form. On an average, human voice has an speech activity factor of about 42%. This allows us to multiplex a lot of voice sources together. We study the degradation in voice quality under various scheduling policies for VBR voice. Our simulations showed that it is desirable to ...

There have been various methods proposed for diagnosing laryngeal pathology by analyzing the pathological voice. However, even if two diagnoses are the same, the voice quality might not be the same. In other words, it is difficult to diagnose laryngeal pathology only by acoustic parameters. In this study, we analyze the vibration patterns seen in various pathological cases to explain pathologic...

The requirements in terms of service flexibility, spectrum efficiency and speech quality introduce new challenges when voice is transmitted over packet and over wireless. This paper analyses the perceived voice quality when voice frames are transported on packet radio bearers of GSM/EDGE Radio Access Networks (GERAN) and are statistically multiplexed. The resulting quality depends on the link l...

This article discusses the differences between children's voices and adult voices. We give an overview of the anatomy in the head and neck and specifically the anatomy of the respiratory system and the larynx. We also describe the development of children's voices including different physiological measures and voice quality. The development and consequences for voice production and voice quality...

This paper investigates the measure of voice quality for a digital speech watermarking scheme using a subjectivity method. Data rate, inaudibility, and robustness are considered more than voice quality in speech watermarking. Since any technique in speech telecommunication should have acceptable quality, the perceptual measurement of voice quality is seen as an important topic in audio and spee...

INTRODUCTION Treatments for patients with laryngeal cancer often have an impact on physical, social, and psychological functions. OBJECTIVE To evaluate quality of life and voice in patients treated for advanced laryngeal cancer through surgery or exclusive chemoradiation. METHODS Retrospective cohort study with 30 patients free from disease: ten total laryngectomy patients without productio...

BACKGROUND Relationship between voice and quality of life. AIM To assess the impact of voice on the quality of life of elementary public school teachers. METHOD Application of the Voice-related quality of life questionnaire (VRQOL) with 120 teachers. The analysis involves: calculation of the Global Score (questions 1 to 10); descriptive analysis of the questions; calculation of Spearman's c...

Treatment of small carcinoma of the larynx may lead to voice handicap and restricted quality of life. The relationship between the two is revealed. Sixty-five patients aged 62.1 ± 10.0 years rated their voice handicap and quality of life after treatment of T1 (n = 35) or T2 (n = 30) laryngeal carcinoma during regular out-patient examinations. For the self-assessment of the voice, the Voice Hand...

A novel tone quality improvement method for a bone conduction voice is presented. In the present method, the tone quality of the bone conduction voice is converted to the similar quality of the air conduction voice. For the voice conversion, the present method uses a codebook, which consists of various paired code vectors of the bone and air conduction voices. The deltaand mel-cepstral coeffici...

UNLABELLED Studies show a high prevalence of vocal alterations among teachers. One of the criteria for the establishment of the prevalence of vocal alteration is based on teachers' self-perception. OBJECTIVE This study aimed at comparing voice-disordered quality of life measures between a group of teachers who reported vocal alteration and a group of teachers who did not, by verifying the tea...