Name | Larynx |
---|---|
Image2 | Larynx_endo_2.jpg |
Caption2 | Endoscopic image of larynx }} |
In newborn infants, the larynx is initially at the level of the C2–C3 vertebrae, and is further forward and higher relative to its position in the adult body. The larynx descends as the child grows.
Fine manipulation of the larynx is used to generate a source sound with a particular fundamental frequency, or pitch. This source sound is altered as it travels through the vocal tract, configured differently based on the position of the tongue, lips, mouth, and pharynx. The process of altering a source sound as it passes through the filter of the vocal tract creates the many different vowel and consonant sounds of the world's languages as well as tone, certain realizations of stress and other types of linguistic prosody. The larynx also has a similar function as the lungs in creating pressure differences required for sound production; a constricted larynx can be raised or lowered affecting the volume of the oral cavity as necessary in glottalic consonants.
The vocal folds can be held close together (by adducting the arytenoid cartilages), so that they vibrate (see phonation). The muscles attached to the arytenoid cartilages control the degree of opening. Vocal fold length and tension can be controlled by rocking the thyroid cartilage forward and backward on the cricoid cartilage (either directly by contracting the cricothyroids or indirectly by changing the vertical position of the larynx), by manipulating the tension of the muscles within the vocal folds, and by moving the arytenoids forward or backward. This causes the pitch produced during phonation to rise or fall. In most males the vocal folds are longer and with a greater mass, producing a deeper pitch.
The vocal apparatus consists of two pairs of mucosal folds. These folds are false vocal folds (vestibular folds) and true vocal folds (folds). The false vocal folds are covered by respiratory epithelium, while the true vocal folds are covered by stratified squamous epithelium. The false vocal folds are not responsible for sound production, but rather for resonance. The exceptions to this are found in Tibetan Chant and Kargyraa, a style of Tuvan throat singing. Both make use of the false vocal folds to create an undertone. These false vocal folds do not contain muscle, while the true vocal folds do have skeletal muscle.
During swallowing, the backward motion of the tongue forces the epiglottis over the glottis' opening to prevent swallowed material from entering the larynx which leads to the lungs; the larynx is also pulled upwards to assist this process. Stimulation of the larynx by ingested matter produces a strong cough reflex to protect the lungs.
Injury to the external laryngeal nerve causes weakened phonation because the vocal folds cannot be tightened. Injury to one of the recurrent laryngeal nerves produces hoarseness, if both are damaged the voice may or may not be preserved, but breathing becomes difficult.
Notably, the only muscle capable of separating the vocal cords for normal breathing is the posterior cricoarytenoid. If this muscle is incapacitated on both sides, the inability to pull the vocal folds apart (abduct) will cause difficulty breathing. Bilateral injury to the recurrent laryngeal nerve would cause this condition. It is also worth noting that all muscles are innervated by the recurrent laryngeal branch of the vagus except the cricothyroid muscle, which is innervated by the external laryngeal, branch of the superior laryngeal nerve (a branch of the vagus).
Some anthropologists, such as Jeffrey Laitman, have suggested that the descended larynx, by extending the length of the vocal tract and thereby increasing the variety of sounds humans could produce, was a critical element in the development of speech and language, while others cite the presence of descended larynges in non-linguistic animals, as well as the ubiquity of nonverbal communication and language among humans, as counterevidence against this claim.
Laryngopharyngeal reflux is a condition in which acid from the stomach irritates and burns the larynx. Similar damage can occur with gastroesophageal reflux disease (GERD).
Vocal folds are found only in mammals, and a few lizards. As a result, many reptiles and amphibians are essentially voiceless; frogs use ridges in the trachea to modulate sound, while birds have a separate sound-producing organ, the syrinx.
This text is licensed under the Creative Commons CC-BY-SA License. This text was originally published on Wikipedia and was developed by the Wikipedia community.
name | Mal Webb |
---|---|
background | solo_singer |
born | October 31, 1966Melbourne, Victoria, Australia |
instrument | Vocalist, Piano, Trombone, percussion, Guitar, drums, Bass, Trombone, Slide Trumpet, Mbira, Chromatic Harmonica |
genre | Pop, jazz, blues, world music, Ghanaian music, A cappella |
occupation | Musician, Songwriter, Comedian |
years active | 1984–present |
associated acts | The Cat Empire, Bomba, Ross Wilson, Lano and Woodley |
website | malwebb.com |
notable instruments | }} |
Mal appeared on the "Look What They Did to My Song" segment on Spicks and Specks on 4 October 2006.
Category:1966 births Category:Living people Category:Musicians from Melbourne
This text is licensed under the Creative Commons CC-BY-SA License. This text was originally published on Wikipedia and was developed by the Wikipedia community.
Bleckmann has released a series of very well-received albums on Winter & Winter, including recordings of Las Vegas standards, of Berlin Kabarett, and of popular “bar songs� (all with pianist Fumio Yasuda), a recording of newly-arranged songs by Charles Ives (with jazz/rock collective Kneebody), and his new acoustic Solos for Voice “I dwell in possibility�. Bleckmann has worked with such artists as Laurie Anderson, Anthony Braxton, Steve Coleman, Dave Douglas, Phillip Glass, Meredith Monk, Michael Tilson Thomas, John Zorn and The Bang on a Can All-Stars and was a guest vocalist with the San Francisco Symphony Chorus, Estonian Radio Choir, Merce Cunningham Dance Company and Mark Morris Dance and most prominently, Meredith Monk, with whom Bleckmann worked as a core ensemble member for fifteen years. He has recently been interview by Terry Gross on NPR’s Fresh Air. Recognized as both a performer and composer, his work spans concerts, installations, theater, cabaret and performance art. He has sung worldwide on some of the great stages including Carnegie Hall's, Zankel Hall, and the Sydney Opera House. ''The New Yorker'' called him a 'local cult favorite', ''The New York Times'' 'excellent' and according to ''OUT Magazine'' Bleckmann is 'a singer who's only recently fallen to earth' and indeed Bleckmann's style has something otherworldly and ethereal. Bleckmann is also an educator. He is professor of Jazz Voice at the prestigious Manhattan School of Music and Adjunct Assistant Professor at The New School, Queens College and New York University.
Theo Bleckmann grew up appreciating both traditional music from his native Germany as well as American popular music and The Great American Songbook. He trained as an ice dancer in Germany, and was a junior champion before deciding to pursue a career in music. In 1989 Bleckmann moved from his native Germany to New York City (subsequently becoming an American citizen in 2005) after meeting legendary jazz vocalist Sheila Jordan at a workshop in Graz, Austria, who remains an influential mentor and colleague to this day. Together they can be heard on Sheila Jordan's ''Jazzchild'' (High Note 1999).
One of his recent appearances on television include "The David Letterman Show" with the performance artist Laurie Anderson on July 14, 2010.
Theo Bleckmann sang in John Moran's ''Book of the Dead'' at the Public Theater in NY, performed a lead in Bang on a Can's Obie Award-winning opera ''Carbon Copy Building'' and frequently appears as a soloist with The Bang on a Can All-Stars. In collaboration with director Laurie McCants and set designer Elaine F. Williams, he wrote the music and performed ''The Alexandria Carry On'', which has been traveling the US and was performed at the actual library in Alexandria, Egypt.
Category:1966 births Category:Living people Category:People from Dortmund Category:German composers
de:Theo BleckmannThis text is licensed under the Creative Commons CC-BY-SA License. This text was originally published on Wikipedia and was developed by the Wikipedia community.
The World News (WN) Network, has created this privacy statement in order to demonstrate our firm commitment to user privacy. The following discloses our information gathering and dissemination practices for wn.com, as well as e-mail newsletters.
We do not collect personally identifiable information about you, except when you provide it to us. For example, if you submit an inquiry to us or sign up for our newsletter, you may be asked to provide certain information such as your contact details (name, e-mail address, mailing address, etc.).
When you submit your personally identifiable information through wn.com, you are giving your consent to the collection, use and disclosure of your personal information as set forth in this Privacy Policy. If you would prefer that we not collect any personally identifiable information from you, please do not provide us with any such information. We will not sell or rent your personally identifiable information to third parties without your consent, except as otherwise disclosed in this Privacy Policy.
Except as otherwise disclosed in this Privacy Policy, we will use the information you provide us only for the purpose of responding to your inquiry or in connection with the service for which you provided such information. We may forward your contact information and inquiry to our affiliates and other divisions of our company that we feel can best address your inquiry or provide you with the requested service. We may also use the information you provide in aggregate form for internal business purposes, such as generating statistics and developing marketing plans. We may share or transfer such non-personally identifiable information with or to our affiliates, licensees, agents and partners.
We may retain other companies and individuals to perform functions on our behalf. Such third parties may be provided with access to personally identifiable information needed to perform their functions, but may not use such information for any other purpose.
In addition, we may disclose any information, including personally identifiable information, we deem necessary, in our sole discretion, to comply with any applicable law, regulation, legal proceeding or governmental request.
We do not want you to receive unwanted e-mail from us. We try to make it easy to opt-out of any service you have asked to receive. If you sign-up to our e-mail newsletters we do not sell, exchange or give your e-mail address to a third party.
E-mail addresses are collected via the wn.com web site. Users have to physically opt-in to receive the wn.com newsletter and a verification e-mail is sent. wn.com is clearly and conspicuously named at the point of
collection.If you no longer wish to receive our newsletter and promotional communications, you may opt-out of receiving them by following the instructions included in each newsletter or communication or by e-mailing us at michaelw(at)wn.com
The security of your personal information is important to us. We follow generally accepted industry standards to protect the personal information submitted to us, both during registration and once we receive it. No method of transmission over the Internet, or method of electronic storage, is 100 percent secure, however. Therefore, though we strive to use commercially acceptable means to protect your personal information, we cannot guarantee its absolute security.
If we decide to change our e-mail practices, we will post those changes to this privacy statement, the homepage, and other places we think appropriate so that you are aware of what information we collect, how we use it, and under what circumstances, if any, we disclose it.
If we make material changes to our e-mail practices, we will notify you here, by e-mail, and by means of a notice on our home page.
The advertising banners and other forms of advertising appearing on this Web site are sometimes delivered to you, on our behalf, by a third party. In the course of serving advertisements to this site, the third party may place or recognize a unique cookie on your browser. For more information on cookies, you can visit www.cookiecentral.com.
As we continue to develop our business, we might sell certain aspects of our entities or assets. In such transactions, user information, including personally identifiable information, generally is one of the transferred business assets, and by submitting your personal information on Wn.com you agree that your data may be transferred to such parties in these circumstances.