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Electrolarynx
An electrolarynx, sometimes referred to as a "throat back" or "cancer kazoo", is a medical device about the size of a small electric razor used to produce clearer speech by those people who have lost their voicebox, usually due to cancer of the larynx. The most common device is a handheld, battery-operated device placed under the mandible which produces vibrations and allow speech. Earlier non-electric devices were called mechanical larynxes. Along with developing esophageal voice, robotic voice or undergoing a surgical procedure, the electrolarynx serves as a mode of speech recovery for laryngectomy patients.
==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 weak voice. Electrolarynxes were introduced in the 1940s, at a time when esophageal voice 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, many medical procedures, such as the tracheo-oesophageal puncture, were created to enable speech without continued dependence on a handheld device.
The use of an electrolarynx can cause some social issues including difficulty ordering a drink in a noisy pub,〔 and, when answering a telephone, the caller responds "Is this a computer that I'm speaking to?"〔 One user states:
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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