Electrolarynx

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Electrolaryngeal speech
И
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Entity (decimal)И
Unicode (hex)U+0418

An electrolarynx, sometimes referred to as a "throat back", is a medical device about the size of a small electric razor used to produce clearer speech by those people who have lost their voice box, usually due to cancer of the larynx. The most common device is a handheld, battery-operated device pressed against the skin under the mandible which produces vibrations to allow speech; [1] other variations include a device similar to the "talk box" electronic music device, which delivers the basis of the speech sound via a tube placed in the mouth. [2] Earlier non-electric devices were called mechanical larynxes. Along with developing esophageal voice, using a speech synthesizer, or undergoing a surgical procedure, the electrolarynx serves as a mode of speech recovery for laryngectomy patients. [2] [3]

Contents

The Voice Quality Symbol for electrolaryngeal phonation in speech is И, approximating the symbol for electricity.

Overview

Initially, the pneumatic mechanical larynx was developed in the 1920s by Western Electric. It did not run on electricity, and was flawed in that it produced a strong voice. Electrolarynxes were introduced in the 1940s, at a time when esophageal speech was being promoted as the best course in speech recovery; however, since that technique is difficult to master, the electrolarynx became quite popular. Since then, medical procedures, such as the tracheo-oesophageal puncture, and the rarely performed laryngeal transplantation surgery, have been created to enable speech without continued dependence on a handheld device. [2] [3]

External media
Audio
Nuvola apps arts.svg Using A New Voice To Enjoy Life After Cancer (2:54), StoryCorps [4]
Video
Nuvola apps kaboodle.svg Communication after laryngectomy (8:58), South East Coast Laryngectomy Support Groups (UK) [5]

The use of an electrolarynx can cause social issues, for instance difficulty ordering food, drinks, or other items in noisy environments; [5] or, when answering a telephone, having the caller respond, "Am I talking to a computer?" [4]

However, quality-of-life improvements due to electrolarynx usage are generally significant. One user states:

People are really very kind once they realize what the situation is. I may go into a restaurant once, and if I go back there a year later, and it's the same woman at the front desk, she'll say, "Where have you been? We haven't seen you for a while." So, I feel like a movie star...

I'm really very blessed in my life. I am happier now, without my voice, than I've ever been with my voice. It's a small price to pay for being alive and enjoying life. So I am very happy where I am now. [4]

Traditional electrolarynxes produce a monotone buzz that the user articulates into speech sounds, resulting in the characteristic "robotlike" voice quality. However, in the 1990s, research and commercial multi-tone devices began to be developed, including discrete-tone devices using multiple-position switches [6] or multiple buttons; [7] [8] as well as variable-tone devices controlled by single pressure-sensitive buttons, [9] trackballs, [10] gyroscopes, [11] touchpad-like input devices, [12] or even electrical detection of the movement of neck muscles. [13] In addition to allowing speakers of non-tonal languages such as English to have a more natural speaking voice, [6] [7] [9] [13] some of these newer devices have allowed speakers of tonal languages such as Mandarin Chinese to speak more intelligibly. [10] [11]

Notable fictional users

Fictional characters notable for their use of an electrolarynx include:

See also

Related Research Articles

In linguistics, creaky voice refers to a low, scratchy sound that occupies the vocal range below the common vocal register. It is a special kind of phonation in which the arytenoid cartilages in the larynx are drawn together; as a result, the vocal folds are compressed rather tightly, becoming relatively slack and compact. They normally vibrate irregularly at 20–50 pulses per second, about two octaves below the frequency of modal voicing, and the airflow through the glottis is very slow. Although creaky voice may occur with very low pitch, as at the end of a long intonation unit, it can also occur with a higher pitch. All contribute to make a speaker's voice sound creaky or raspy.

<span class="mw-page-title-main">Mandarin Chinese</span> Major branch of Chinese languages

Mandarin is a group of Chinese language dialects that are natively spoken across most of northern and southwestern China. The group includes the Beijing dialect, the basis of the phonology of Standard Chinese, the official language of China. Because Mandarin originated in North China and most Mandarin dialects are found in the north, the group is sometimes referred to as Northern Chinese. Many varieties of Mandarin, such as those of the Southwest and the Lower Yangtze, are not mutually intelligible with the standard language. Nevertheless, Mandarin as a group is often placed first in lists of languages by number of native speakers.

The term phonation has slightly different meanings depending on the subfield of phonetics. Among some phoneticians, phonation is the process by which the vocal folds produce certain sounds through quasi-periodic vibration. This is the definition used among those who study laryngeal anatomy and physiology and speech production in general. Phoneticians in other subfields, such as linguistic phonetics, call this process voicing, and use the term phonation to refer to any oscillatory state of any part of the larynx that modifies the airstream, of which voicing is just one example. Voiceless and supra-glottal phonations are included under this definition.

<span class="mw-page-title-main">Vagus nerve</span> Main nerve of the parasympathetic nervous system

The vagus nerve, also known as the tenth cranial nerve, cranial nerve X, or simply CN X, is a cranial nerve that carries sensory fibers that create a pathway that interfaces with the parasympathetic control of the heart, lungs, and digestive tract. It comprises two nerves—the left and right vagus nerves—but they are typically referred to collectively as a single subsystem.

<span class="mw-page-title-main">Human voice</span> Sound made by a human being using the vocal tract

The human voice consists of sound made by a human being using the vocal tract, including talking, singing, laughing, crying, screaming, shouting, humming or yelling. The human voice frequency is specifically a part of human sound production in which the vocal folds are the primary sound source.

Tone is the use of pitch in language to distinguish lexical or grammatical meaning—that is, to distinguish or to inflect words. All oral languages use pitch to express emotional and other para-linguistic information and to convey emphasis, contrast and other such features in what is called intonation, but not all languages use tones to distinguish words or their inflections, analogously to consonants and vowels. Languages that have this feature are called tonal languages; the distinctive tone patterns of such a language are sometimes called tonemes, by analogy with phoneme. Tonal languages are common in East and Southeast Asia, Africa, the Americas and the Pacific.

<span class="mw-page-title-main">Larynx</span> Voice box, an organ in the neck of amphibians, reptiles, and mammals

The larynx, commonly called the voice box, is an organ in the top of the neck involved in breathing, producing sound and protecting the trachea against food aspiration. The opening of larynx into pharynx known as the laryngeal inlet is about 4–5 centimeters in diameter. The larynx houses the vocal cords, and manipulates pitch and volume, which is essential for phonation. It is situated just below where the tract of the pharynx splits into the trachea and the esophagus. The word 'larynx' comes from the Ancient Greek word lárunx ʻlarynx, gullet, throat.ʼ

This is a glossary of medical terms related to communication disorders which are psychological or medical conditions that could have the potential to affect the ways in which individuals can hear, listen, understand, speak and respond to others.

Swallowing, also called deglutition or inglutition in scientific contexts, is the process in the body of a human or other animal that allows for a substance to pass from the mouth, to the pharynx, and into the esophagus, while shutting the epiglottis. Swallowing is an important part of eating and drinking. If the process fails and the material goes through the trachea, then choking or pulmonary aspiration can occur. In the human body the automatic temporary closing of the epiglottis is controlled by the swallowing reflex.

Esophageal speech, also known as esophageal voice, is an airstream mechanism for speech that involves oscillation of the esophagus. This contrasts with traditional laryngeal speech, which involves oscillation of the vocal folds. In esophageal speech, pressurized air is injected into the upper esophagus and then released in a controlled manner to create the airstream necessary for speech. Esophageal speech is a learned skill that requires speech training and much practice. On average it takes 6 months to a year to learn this form of speech. Because of the high level of difficulty in learning esophageal speech, some patients are unable to master the skill.

<span class="mw-page-title-main">Laryngectomy</span> Surgical procedure

Laryngectomy is the removal of the larynx and separation of the airway from the mouth, nose and esophagus. In a total laryngectomy, the entire larynx is removed. In a partial laryngectomy, only a portion of the larynx is removed. Following the procedure, the person breathes through an opening in the neck known as a stoma. This procedure is usually performed by an ENT surgeon in cases of laryngeal cancer. Many cases of laryngeal cancer are treated with more conservative methods. A laryngectomy is performed when these treatments fail to conserve the larynx or when the cancer has progressed such that normal functioning would be prevented. Laryngectomies are also performed on individuals with other types of head and neck cancer. Less invasive partial laryngectomies, including tracheal shaves and feminization laryngoplasty may also be performed on transgender women and other female or non-binary identified individuals to feminize the larynx and/or voice. Post-laryngectomy rehabilitation includes voice restoration, oral feeding and more recently, smell and taste rehabilitation. An individual's quality of life can be affected post-surgery.

<span class="mw-page-title-main">Fuzhou dialect</span> Eastern Min Chinese dialect

The Fuzhou language, also Foochow, Hokchew, Hok-chiu, or Fuzhounese, is the prestige variety of the Eastern Min branch of Min Chinese spoken mainly in the Mindong region of Eastern Fujian Province. As it is mutually unintelligible to neighbouring varieties in the province, under a technical linguistic definition Fuzhou is a language and not a dialect. Thus, while Fuzhou may be commonly referred to as a 'dialect' by laypersons, this is colloquial usage and not recognised in academic linguistics. Like many other varieties of Chinese, the Fuzhou dialect is dominated by monosyllabic morphemes that carry lexical tones, and has a mainly analytic syntax. While the Eastern Min branch it belongs to is relatively closer to other branches of Min such as Southern Min or Pu-Xian Min than to other Sinitic branches such as Mandarin, Wu Chinese or Hakka, they are still not mutually intelligible.

<span class="mw-page-title-main">Oropharyngeal dysphagia</span> Difficulty controlling the mouth or throat for swallowing

Oropharyngeal dysphagia is the inability to empty material from the oropharynx into the esophagus as a result of malfunction near the esophagus. Oropharyngeal dysphagia manifests differently depending on the underlying pathology and the nature of the symptoms. Patients with dysphagia can experience feelings of food sticking to their throats, coughing and choking, weight loss, recurring chest infections, or regurgitation. Depending on the underlying cause, age, and environment, dysphagia prevalence varies. In research including the general population, the estimated frequency of oropharyngeal dysphagia has ranged from 2 to 16 percent.

A tracheo-esophageal puncture is a surgically created hole between the trachea (windpipe) and the esophagus in a person who has had a total laryngectomy, a surgery where the larynx is removed. The purpose of the puncture is to restore a person’s ability to speak after the vocal cords have been removed. This involves creation of a fistula between trachea and oesophagus, puncturing the short segment of tissue or “common wall” that typically separates these two structures. A voice prosthesis is inserted into this puncture. The prosthesis keeps food out of the trachea but lets air into the esophagus for oesophageal speech.

Alaryngeal speech is speech using an airstream mechanism that uses features other than the glottis to create voicing. There are three types: esophageal, buccal, and pharyngeal speech. Each of these uses an alternative method of creating phonation to substitute for the vocal cords in the larynx. These forms of alaryngeal speech are also called "pseudo-voices".

<span class="mw-page-title-main">Voice therapy</span> Used to aid voice disorders or altering quality of voice

Voice therapy consists of techniques and procedures that target vocal parameters, such as vocal fold closure, pitch, volume, and quality. This therapy is provided by speech-language pathologists and is primarily used to aid in the management of voice disorders, or for altering the overall quality of voice, as in the case of transgender voice therapy. Vocal pedagogy is a related field to alter voice for the purpose of singing. Voice therapy may also serve to teach preventive measures such as vocal hygiene and other safe speaking or singing practices.

Old Mandarin or Early Mandarin was the speech of northern China during the Jurchen-ruled Jin dynasty and the Mongol-led Yuan dynasty. New genres of vernacular literature were based on this language, including verse, drama and story forms, such as the qu and sanqu.

<span class="mw-page-title-main">Voice prosthesis</span>

A voice prosthesis is an artificial device, usually made of silicone that is used in conjunction with voice therapy to help laryngectomized patients to speak. During a total laryngectomy, the entire voice box (larynx) is removed and the windpipe (trachea) and food pipe (esophagus) are separated from each other. During this operation an opening between the food pipe and the windpipe can be created. This opening can also be created at a later time. This opening is called a tracheo-esophageal puncture. The voice prosthesis is placed in this opening. Then, it becomes possible to speak by occluding the stoma and blowing the air from the lungs through the inside of the voice prosthesis and through the throat, creating a voice sound, which is called tracheo-esophageal speech. The back end of the prosthesis sits at the food pipe. To avoid food, drinks, or saliva from coming through the prosthesis and into the lungs, the prosthesis has a small flap at the back. There are two ways of inserting the voice prosthesis: through the mouth and throat with the help of a guide wire, or directly through the tracheostoma (anterograde) manner. Nowadays, most voice prosthesis are placed anterograde, through the stoma.

<i>Konttho</i> 2019 Bengali social drama film

Konttho is a 2019 Bengali drama film directed by Nandita Roy and Shiboprosad Mukherjee. The movie is produced by Windows Production.

Muscle tension dysphonia (MTD) was originally coined in 1983 by Morrison and describes a dysphonia caused by increased muscle tension of the muscles surrounding the voice box: the laryngeal and paralaryngeal muscles. MTD is a unifying diagnosis for a previously poorly categorized disease process. It allows for the diagnosis of dysphonia caused by many different etiologies and can be confirmed by history, physical exam, laryngoscopy and videostroboscopy, a technique that allows for the direct visualization of the larynx, vocal cords, and vocal cord motion.

References

  1. Department of Otolaryngology. "Electrolaryngeal Speech". Eastern Virginia Medical School. Archived from the original on 2012-08-24. Retrieved 2013-03-14.
  2. 1 2 3 Only Human; Cineflix (2018-06-20). Speaking with a Dead Man's Voice by Organ Transplant Surgery | Only Human. YouTube . Retrieved 2019-08-06.
  3. 1 2 Krishnan, Giri; Du, Charles; Fishman, Jonathan M.; Foreman, Andrew; Lott, David G.; Farwell, Gregory; Belafsky, Peter; Krishnan, Suren; Birchall, Martin A. (August 2017). "The current status of human laryngeal transplantation in 2017: A state of the field review". The Laryngoscope. 127 (8): 1861–1868. doi:10.1002/lary.26503. ISSN   1531-4995. PMID   28224630. S2CID   24360597.
  4. 1 2 3 Forman, Rene; Reiman, Nadia; Esty-Kendall, Jud; radio station KCRW (2012). "Using A New Voice To Enjoy Life After Cancer". StoryCorps . National Public Radio . Retrieved February 13, 2012. Also hear the audio at NPR
  5. 1 2 Communication after laryngectomy. YouTube . South East Coast Laryngectomy Support Groups (UK). 2011-03-09. Retrieved 2013-03-14.
  6. 1 2 Helms, Dutch (December 2004). "Whispers on the Web - December 2004". Archived from the original on 2017-12-12. Retrieved 2016-08-19.
  7. 1 2 "Servox Digital Electro Larynx Speech Aid". 2016. Retrieved 2016-08-10.
  8. "Nu-Vois III Electro-Larynges". Archived from the original on 2016-07-24. Retrieved 2016-08-19.
  9. 1 2 "The TruTone™ Electrolarynx". 2008. Archived from the original on 24 May 2008. Retrieved 2016-08-10.
  10. 1 2 Wan, Congying; Wang, Erqiang; Wu, Liang; Wang, Supin (2012). "Design and evaluation of an electrolarynx with Mandarin tone-control function". 2012 International Conference on Audio, Language and Image Processing. pp. 627–631. doi:10.1109/ICALIP.2012.6376692. ISBN   978-1-4673-0174-9. S2CID   10867420.
  11. 1 2 Shakya, Bicky; Bharam, Vishal; Merchen, Alexander (2014). "Development of an Electrolarynx Capable of Supporting Tonal Distinctions in Mandarin" (PDF). Trinity College (Connecticut). Archived from the original (PDF) on August 10, 2017. Retrieved 2016-08-10.
  12. "Electrolarynx Speech Aid » by Labex". labextrade.com. Retrieved 2019-06-20.
  13. 1 2 Kubert, Heather L.; Stepp, Cara E.; Zeitels, Steven M.; Gooey, John E.; Walsh, Michael J.; Prakash, S. R.; Hillman, Robert E.; Heaton, James T. (2009-01-19). "Electromyographic control of a hands-free electrolarynx using neck strap muscles". Journal of Communication Disorders. 42 (3): 211–225. doi:10.1016/j.jcomdis.2008.12.002. PMC   3748802 . PMID   19233382.