Project Gutenberg 2015-03-13 Public domain in the USA. 166 Sutro, Emil 1832 1906 99002693 Duality of Voice Produced by Richard Tonsing, Bill Tozier, Barbara Tozier and the Online Distributed Proofreading Team at http://www.pgdp.net "Duality of Voice" by Emil Sutro is a research treatise written in the late 19th century. The work presents a comprehensive analysis of the human voice, asserting that vocal production involves a dual nature transcending traditional anatomical understandings. The author embarks on an exploration of how sound is generated, emphasizing the significance of the œsophagus alongside conventional vocal cords, and seeks to redefine established notions in the fields of voice science and psychology. The opening of the book introduces Sutro's fundamental discovery regarding the duality of the human voice, asserting that vocalization arises from both respiratory paths: the trachea and the œsophagus. He discusses his journey of introspection, a method through which he has made considerable observations about voice production, revealing that the delivery of sound involves not only anatomical structures but also spiritual elements. Sutro expresses his initial motivations for studying the voice—seeking to master English pronunciation—and reflects on the broader implications of his findings, suggesting that they may lead to profound insights into the human experience and the dual nature of mankind. Through a combination of personal narrative and scientific inquiry, he invites readers to reconsider how they understand vocalization and its connection to the essence of being human. (This is an automatically generated summary.) Reading ease score: 51.8 (10th to 12th grade). Somewhat difficult to read. en Voice Language and languages BF Text Category: Science - Biology Category: Psychiatry/Psychology 419947 2025-08-19T12:11:23.308534 text/html 400788 2024-10-24T17:08:43 text/html 815586 2025-08-19T12:11:29.992473 application/epub+zip 817805 2025-08-19T12:11:24.687571 application/epub+zip 232694 2025-08-19T12:11:23.995555 application/epub+zip 925777 2025-08-19T12:11:33.779480 application/x-mobipocket-ebook 887721 2025-08-19T12:11:29.218492 application/x-mobipocket-ebook 304780 2022-09-22T04:45:51.335781 application/x-mobipocket-ebook 371262 2025-08-19T12:11:22.528496 text/plain; charset=us-ascii 351511 2024-10-24T17:08:43 text/plain; charset=us-ascii 16306 2025-08-19T12:11:33.917441 application/rdf+xml 9541 2025-08-19T12:11:24.106498 image/jpeg 1554 2025-08-19T12:11:24.049517 image/jpeg 757916 2025-08-19T12:11:23.375533 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog