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Alaryngeal Speech Enhancement : = Towards a More Natural Speech.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Alaryngeal Speech Enhancement :/
Reminder of title:	Towards a More Natural Speech.
Author:	Chima, Chiamaka.
Description:	1 online resource (93 pages)
Notes:	Source: Masters Abstracts International, Volume: 78-01.
Contained By:	Masters Abstracts International78-01.
Subject:	Electrical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10118725click for full text (PQDT)
ISBN:	9781339800547

Alaryngeal Speech Enhancement : = Towards a More Natural Speech.
Chima, Chiamaka.

Alaryngeal Speech Enhancement :Towards a More Natural Speech. - 1 online resource (93 pages)

Source: Masters Abstracts International, Volume: 78-01.

Thesis (M.S.)--Tufts University, 2016.

Includes bibliographical references

Oral cancer has stereotypically been associated with mostly geriatric patients who smoke. However, this ailment affects younger people as well and there are several other factors that also cause laryngeal cancer such as voice overuse or prolonged GERD (gastroesophageal reflux disease). Laryngeal cancer inevitably leads to surgery or laryngectomy and thereafter, loss of phonation (i.e. loss of voice) by the patients. In addition, vocal fold paralysis could also lead to loss of phonation. One commonly-adopted method for voice rehabilitation after the laryngectomy is the use of an electronic larynx device (hereafter referred to as the electrolarynx.) These devices create a machine-like raspy and monotonous sound, which lacks speech clarity. However, given the relatively small number of patients affected by this rare ailment, companies consider the market insignificant and therefore do not invest in research and development to improve this speech technology for the affected population, even though the need is real. The main objective of this project is to research the gap between the usual laryngeal speech and the speech produced by the present-day electrolarynx, and to identify the major causes of the discrepancies. This effort would help to support the creation of a better voice prosthesis for laryngectomees (people who have undergone laryngectomy), especially given the dearth of research in this field. To achieve this goal, some of the prior arts were researched and analyzed, weighing their merits and re-evaluating some of the ideas to identify the most promising directions. Previous works focused heavily on investigating new methods for noise reduction, which are neither applicable to real-time enhancement of electrolaryngeal speech nor to the removal of the mechanical perceptibility. Our approach looked at the problem from various perspectives and proposes a novel Human Audio Sensing approach for the electrolaryngeal speech enhancement. As an alternative for voice rehabilitation, an articulatory pattern recognition method was proposed for speech. In this work, an existing electrolarynx (Servox model) was studied, analyzed in detail and modified in order to monitor the improvements. Given the studies and the results obtained, it was concluded that implementing improvements to the present electrolarynx requires a holistic approach. This approach addresses several factors, such (1) an overhaul of the excitation signal or source sound, which comprises attention to the driving waveform and prosody integration and (2) an efficient coupling or transmission of the generated ideal excitation signal. This investigation also led to the design of a new product incorporating breath sensors to help facilitate the production of a more natural-sounding speech, which also eliminates the normal electrolarynx control buttons thus paving the way for a hand-free product. In addition, another alaryngeal speech production technique employing an articulatory recognition system was proposed.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9781339800547Subjects--Topical Terms:

649834
Electrical engineering.
Subjects--Index Terms:

Alaryngeal speechIndex Terms--Genre/Form:

542853
Electronic books.

Alaryngeal Speech Enhancement : = Towards a More Natural Speech.
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500 $a Source: Masters Abstracts International, Volume: 78-01.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Panetta, Karen.
502 $a Thesis (M.S.)--Tufts University, 2016.
504 $a Includes bibliographical references
520 $a Oral cancer has stereotypically been associated with mostly geriatric patients who smoke. However, this ailment affects younger people as well and there are several other factors that also cause laryngeal cancer such as voice overuse or prolonged GERD (gastroesophageal reflux disease). Laryngeal cancer inevitably leads to surgery or laryngectomy and thereafter, loss of phonation (i.e. loss of voice) by the patients. In addition, vocal fold paralysis could also lead to loss of phonation. One commonly-adopted method for voice rehabilitation after the laryngectomy is the use of an electronic larynx device (hereafter referred to as the electrolarynx.) These devices create a machine-like raspy and monotonous sound, which lacks speech clarity. However, given the relatively small number of patients affected by this rare ailment, companies consider the market insignificant and therefore do not invest in research and development to improve this speech technology for the affected population, even though the need is real. The main objective of this project is to research the gap between the usual laryngeal speech and the speech produced by the present-day electrolarynx, and to identify the major causes of the discrepancies. This effort would help to support the creation of a better voice prosthesis for laryngectomees (people who have undergone laryngectomy), especially given the dearth of research in this field. To achieve this goal, some of the prior arts were researched and analyzed, weighing their merits and re-evaluating some of the ideas to identify the most promising directions. Previous works focused heavily on investigating new methods for noise reduction, which are neither applicable to real-time enhancement of electrolaryngeal speech nor to the removal of the mechanical perceptibility. Our approach looked at the problem from various perspectives and proposes a novel Human Audio Sensing approach for the electrolaryngeal speech enhancement. As an alternative for voice rehabilitation, an articulatory pattern recognition method was proposed for speech. In this work, an existing electrolarynx (Servox model) was studied, analyzed in detail and modified in order to monitor the improvements. Given the studies and the results obtained, it was concluded that implementing improvements to the present electrolarynx requires a holistic approach. This approach addresses several factors, such (1) an overhaul of the excitation signal or source sound, which comprises attention to the driving waveform and prosody integration and (2) an efficient coupling or transmission of the generated ideal excitation signal. This investigation also led to the design of a new product incorporating breath sensors to help facilitate the production of a more natural-sounding speech, which also eliminates the normal electrolarynx control buttons thus paving the way for a hand-free product. In addition, another alaryngeal speech production technique employing an articulatory recognition system was proposed.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Electrical engineering. $3 649834
650 4 $a Acoustics. $3 879105
653 $a Alaryngeal speech
653 $a Electrolarynx
653 $a On/off activation
653 $a Pattern recognition
653 $a Real-time enhancement
653 $a Speech enhancement
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690 $a 0986
710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a Tufts University. $b Electrical Engineering. $3 1030762
773 0 $t Masters Abstracts International $g 78-01.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10118725 $z click for full text (PQDT)