Electrolarynx
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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 Speech is a human vocal communication using language. Each language uses Phonetics, phonetic combinations of vowel and consonant sounds that form the sound of its words (that is, all English words sound different from all French words, even if ...
by those people who have lost their voice box, usually due to
cancer of the larynx Laryngeal cancers are mostly squamous-cell carcinomas, reflecting their origin from the epithelium of the larynx. Cancer can develop in any part of the larynx. The prognosis is affected by the location of the tumour. For the purposes of staging ...
. The most common device is a handheld, battery-operated device pressed against the skin under the
mandible In anatomy, the mandible, lower jaw or jawbone is the largest, strongest and lowest bone in the human facial skeleton. It forms the lower jaw and holds the lower tooth, teeth in place. The mandible sits beneath the maxilla. It is the only movabl ...
which produces vibrations to allow speech; other variations include a device similar to the "
talk box A talk box (also spelled talkbox and talk-box) is an effects unit that allows musicians to modify the sound of a musical instrument by shaping the frequency content of the sound and to apply speech sounds (in the same way as singing) onto the sou ...
" electronic music device, which delivers the basis of the speech sound via a tube placed in the mouth. Earlier non-electric devices were called mechanical larynxes. Along with developing
esophageal voice Esophageal speech, also known as esophageal voice, is an airstream mechanism for speech that involves oscillation of the esophagus. This contrasts with traditional larynx, laryngeal speech, which involves oscillation of the vocal folds. In esopha ...
, using a
speech synthesizer Speech synthesis is the artificial production of human speech. A computer system used for this purpose is called a speech synthesizer, and can be implemented in software or Computer hardware, hardware products. A text-to-speech (TTS) system conve ...
, or undergoing a surgical procedure, the electrolarynx serves as a mode of speech recovery for
laryngectomy 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 (including the vocal folds, hyoid bone, epiglottis, Thyroid cartilage, thyroid and cr ...
patients. The
Voice Quality Symbol Voice Quality Symbols (VoQS) are a set of phonetic symbols used to transcribe disordered speech for what in speech pathology is known as "voice quality". This phrase is usually synonymous with phonation in phonetics, but in speech pathology encom ...
for electrolaryngeal
phonation 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 defini ...
in speech is И, approximating the symbol for electricity.


Overview

Initially, the
pneumatic Pneumatics (from Greek ‘wind, breath’) is a branch of engineering that makes use of gas or pressurized air. Pneumatic systems used in Industrial sector, industry are commonly powered by compressed air or compressed inert gases. A central ...
mechanical larynx was developed in the 1920s by
Western Electric The Western Electric Company was an American electrical engineering and manufacturing company officially founded in 1869. A wholly owned subsidiary of American Telephone & Telegraph for most of its lifespan, it served as the primary equipment ma ...
. It did not run on
electricity Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described ...
, 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 A tracheo-esophageal puncture (or tracheoesophageal puncture) is a surgically created hole between the trachea (windpipe) and the esophagus (the tubal pathway between the throat and the stomach) in a person who has had a total laryngectomy, a surge ...
, and the rarely performed laryngeal transplantation surgery, have been created to enable speech without continued dependence on a handheld device. The use of an electrolarynx can cause social issues, for instance difficulty ordering food, drinks, or other items in noisy environments; or, when answering a telephone, having the caller respond, "Am I talking to a computer?" However, quality-of-life improvements due to electrolarynx usage are generally significant. One user states: 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 or multiple buttons; as well as variable-tone devices controlled by single pressure-sensitive buttons,
trackball A trackball is a pointing device consisting of a ball held by a socket containing sensors to detect a rotation of the ball about two axes—like an upside-down ball mouse with an exposed protruding ball. Users roll the ball to position the on-s ...
s, gyroscopes,
touchpad A touchpad or trackpad is a pointing device featuring a tactile sensor, a specialized surface that can translate the motion and position of a user's fingers to a relative position on the operating system that is made output to the screen. Touchp ...
-like input devices, or even electrical detection of the movement of neck muscles. In addition to allowing speakers of non-
tonal languages Tone is the use of pitch in language to distinguish lexical or grammatical meaning – that is, to distinguish or to inflect words. All verbal languages use pitch to express emotional and other paralinguistic information and to convey empha ...
such as English to have a more natural speaking voice, some of these newer devices have allowed speakers of tonal languages such as
Mandarin Chinese Mandarin (; ) is a group of Chinese (Sinitic) 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 ...
to speak more intelligibly.


Notable fictional users

Fictional characters notable for their use of an electrolarynx include: * Agents of "Leviathan" on '' Agent Carter'' * Alpha 60 from '' Alphaville'' * Charlie in ''
Mad Max ''Mad Max'' is an Australian post-apocalyptic Action film, action film series and media franchise created by George Miller (filmmaker), George Miller and Byron Kennedy. It began in 1979 with ''Mad Max (film), Mad Max'', and was followed by thre ...
'' * Electrolarynx Guy (Jack Axelrod) on ''
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'' * Emilio Sanchez, one of the residents of the Lawrence Hilton Jacobs housing project on ''
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'' * Gray Baker in ''
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'' * Heathrow, Madea's brother in ''
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s ''
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'' * Komtuan, the crime lord from the film '' Ong-Bak: Muay Thai Warrior'', notable as a speaker of a tonal language being understood despite using a traditional monotone electrolarynx *
Ned Gerblansky ''South Park'' is an American animated series, animated television series created by Trey Parker and Matt Stone for the Comedy Central cable television, television network. The ongoing narrative revolves around five children, Stan Marsh, Eric Ca ...
from ''
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'' * Sawyer the Cleaner from ''
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'' * Sheriff Jerry/Angela Baker in '' Return to Sleepaway Camp'' * Smokie Martling, a parody of
Jackie Martling John Coger "Jackie" Martling, Jr. (born February 14, 1948) is an American stand-up comedian, writer, radio personality, author, actor, and musician also known as Jackie the Joke Man. He is best known as a former writer and in-studio comedian fo ...
from ''
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'' * The Smoking Family from ''
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'' * Stemroach ( David Bradley) on ''
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'' *
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wrestler Kane, for his first two years in the company (1998–1999) * Zimos from ''
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'' * Evil Troy from ''
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''


See also

*
Esophageal speech 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 sp ...
* *
Silent speech interface Silent speech interface is a device that allows speech communication without using the sound made when people vocalize their speech sounds. As such it is a type of electronic lip reading. It works by the computer identifying the phonemes that an ind ...


References

{{reflist Laryngology Human voice