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Donald Leslie
Donald James Leslie (April 13, 1911 – September 2, 2004) was an American inventor best known for the Leslie speaker and its distinctive effect commonly used with the Hammond organ which helped popularize electronic instruments. Biography Leslie was born on April 13, 1911 in Danville, Illinois. His father was Benjamin Franklin Leslie, and his mother was Lucy Keller Leslie. His family moved to Glendale, California in 1913, where Leslie attended school, graduating from Glendale Union High School in 1929. He was very interested in piano and pipe organ music. Leslie learned about mechanics, electronics, and radios while working various jobs, and by the mid-1930s he was working at Barker Bros. in Los Angeles as a radio service engineer. Barker Bros. sold and repaired the newly-introduced Hammond organs, and Leslie bought one in 1937, hoping it would be a suitable substitute for a pipe organ. When he heard the organ's sound in his home compared with the spacious showroom where he or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danville, Illinois
Danville is a city in Vermilion County, Illinois, United States, and its county seat. The populations was 29,204 as of the 2020 census. It is the principal city of the Danville micropolitan area. History The area that is now Danville was once home to the Miami, Kickapoo, and Potawatomi tribes of Native Americans. Danville was founded in 1827 on of land donated by Guy W. Smith and donated by Dan W. Beckwith. The sale of lots was set for April 10, 1827, and advertised in newspapers in Indianapolis, Indiana and the state capital of Vandalia. The first post office was established in May of the same year in the house of Amos Williams, organizer of Vermilion and Edgar Counties and a prominent Danville citizen. Williams and Beckwith drew up the first plat map; the city was named after Dan Beckwith at Williams' suggestion, although Beckwith suggested the names "Williamsburg" and "Williamstown". Beckwith was born in Pennsylvania in 1795 and moved to Indiana as a young man; in 1819 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frequency Modulation
Frequency modulation (FM) is a signal modulation technique used in electronic communication, originally for transmitting messages with a radio wave. In frequency modulation a carrier wave is varied in its instantaneous frequency in proportion to a property, primarily the instantaneous amplitude, of a message signal, such as an audio signal. The technology is used in telecommunications, radio broadcasting, signal processing, and Run-length limited#FM: .280.2C1.29 RLL, computing. In Analog signal, analog frequency modulation, such as radio broadcasting of voice and music, the instantaneous frequency deviation, i.e. the difference between the frequency of the carrier and its center frequency, has a functional relation to the modulating signal amplitude. Digital data can be encoded and transmitted with a type of frequency modulation known as frequency-shift keying (FSK), in which the instantaneous frequency of the carrier is shifted among a set of frequencies. The frequencies m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Audio Engineers
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label that was previously known as Def American * American University, in Washington, D.C. Sports teams S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2004 Deaths
This is a list of lists of deaths of notable people, organized by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked below. 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 Earlier years ''Deaths in years earlier than this can usually be found in the main articles of the years.'' See also * Lists of deaths by day * Deaths by year (category) {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1911 Births
Events January * January 1 – A decade after federation, the Northern Territory and the Australian Capital Territory are added to the Commonwealth of Australia. * January 3 ** 1911 Kebin earthquake: An earthquake of 7.7 Moment magnitude scale, moment magnitude strikes near Almaty in Russian Turkestan, killing 450 or more people. ** Siege of Sidney Street in London: Two Latvian people, Latvian anarchists die, after a seven-hour siege against a combined police and military force. Home Secretary Winston Churchill arrives to oversee events. * January 4 – Comparison of the Amundsen and Scott expeditions, Amundsen and Scott expeditions: Robert Falcon Scott's British Terra Nova Expedition, ''Terra Nova'' Expedition to the South Pole arrives in the Antarctic and establishes a base camp at Cape Evans on Ross Island. * January 5 – Egypt's Zamalek SC is founded as a general sports and Association football club by Belgian lawyer George Merzbach as Q ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NAMM Oral History Program
The NAMM Oral History Program is an oral history project and archive of recordings of interviews with people from all aspects of the music products industry, including Music store, music instrument retailers, musical instrument and product creators, suppliers and sales representatives, music educators and advocates, Music publisher, publishers, Audio engineer, live sound and recording pioneers, innovators, founders, and musicians. Established in 2000 by National Association of Music Merchants, NAMM: The International Music Products Association to preserve the history of the music products industry as well as improve music education worldwide, the program includes over 5,000 audio or video interviews available to the public via online streaming. Background In 1996, NAMM established the NAMM Resource Center to preserve the history of the music products industry. In 2000 the Oral History Program was founded, with Dan Del Fiorentino, NAMM Music Historian and former curator of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of CBS
CBS Broadcasting, Inc. (CBS; originally the Columbia Broadcasting System) is an Television in the United States, American English-language Commercial broadcasting, commercial Television network, broadcast television and radio network owned by Paramount Global through the CBS Entertainment Group. Along with American Broadcasting Company, ABC and NBC, CBS is one of the traditional Big Three (television networks), "Big Three" American television networks. CBS was founded as a radio network in 1927 and then expanded to television in the 1940s. Although it primarily remained an independent, publicly traded company () throughout most of the 20th century, Paramount Pictures temporarily held a 49% ownership stake from 1929 to 1932. However, in 1995 the Westinghouse Electric Corporation acquired the company, becoming CBS Corporation (2005-2019), CBS Corporation (after selling certain assets). In 2000, CBS sold again to Viacom (1952–2006), the original incarnation of Viacom (formed as a C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pop Music
Pop music is a genre of popular music that originated in its modern form during the mid-1950s in the United States and the United Kingdom.S. Frith, W. Straw, and J. Street, eds, ''iarchive:cambridgecompani00frit, The Cambridge Companion to Pop and Rock'' (Cambridge: Cambridge University Press), , pp. 95–105. During the 1950s and 1960s, pop music encompassed rock and roll and the youth-oriented styles it influenced. ''Rock music, Rock'' and ''pop'' music remained roughly synonymous until the late 1960s, after which ''pop'' became associated with music that was more commercial, wikt:ephemeral, ephemeral, and accessible. Identifying factors of pop music usually include repeated choruses and Hook (music), hooks, short to medium-length songs written in a basic format (often the verse–chorus form, verse–chorus structure), and rhythms or tempos that can be easily danced to. Much of pop music also borrows elements from other styles such as rock, hip hop, urban contemporary, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gospel Music
Gospel music is a traditional genre of Christian music and a cornerstone of Christian media. The creation, performance, significance, and even the definition of gospel music vary according to culture and social context. Gospel music is composed and performed for many purposes, including aesthetic pleasure, religious or ceremonial purposes, and as an entertainment product for the marketplace. Gospel music is characterized by dominant vocals and strong use of harmony with Christian lyrics. Gospel music can be traced to the early 17th century. Hymns and sacred songs were often performed in a call-and-response fashion, heavily influenced by ancestral African music. Most of the churches relied on hand–clapping and foot–stomping as rhythmic accompaniment. Most of the singing was done ''a cappella''.Jackson, Joyce Marie. "The changing nature of gospel music: A southern case study." ''African American Review'' 29.2 (1995): 185. Academic Search Premier. EBSCO. Web. October 5, 201 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blues
Blues is a music genre and musical form that originated among African Americans in the Deep South of the United States around the 1860s. Blues has incorporated spiritual (music), spirituals, work songs, field hollers, Ring shout, shouts, chants, and rhymed simple narrative ballad (music), ballads from the African-American culture. The blues form is ubiquitous in jazz, rhythm and blues, and rock and roll, and is characterized by the Call and response (music), call-and-response pattern, the blues scale, and specific chord progressions, of which the twelve-bar blues is the most common. Blue notes (or "worried notes"), usually thirds, fifths or sevenths flattened in Pitch (music), pitch, are also an essential part of the sound. Blues shuffle note, shuffles or walking bass reinforce the trance-like rhythm and form a repetitive effect known as the groove (popular music), groove. Blues music is characterized by its lyrics, Bassline, bass lines, and Instrumentation (music), instrumen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Music
Rock is a Music genre, genre of popular music that originated in the United States as "rock and roll" in the late 1940s and early 1950s, developing into a range of styles from the mid-1960s, primarily in the United States and the United Kingdom. It has its roots in rock and roll, a style that drew from the black musical genres of blues and rhythm and blues, as well as from country music. Rock also drew strongly from genres such as electric blues and folk music, folk, and incorporated influences from jazz and other styles. Rock is typically centered on the electric guitar, usually as part of a rock group with electric bass guitar, drum kit, drums, and one or more singers. Usually, rock is song-based music with a Time signature, time signature and using a verse–chorus form; however, the genre has become extremely diverse. Like pop music, lyrics often stress romantic love but also address a wide variety of other themes that are frequently social or political. Rock was the most p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psychedelic Music
Psychedelic music (sometimes called psychedelia) is a wide range of popular music styles and genres influenced by 1960s psychedelia, a subculture of people who used psychedelic drugs such as Dmt, DMT, Lysergic acid diethylamide, LSD, mescaline, and psilocybin mushrooms, to experience synesthesia and Altered state of consciousness, altered states of consciousness. Psychedelic music may also aim to enhance the experience of using these drugs and has been found to have a significant influence on psychedelic therapy. Psychedelia embraces visual art, movies, and literature, as well as music. Psychedelic music emerged during the 1960s among folk music, folk and rock music, rock bands in the United States and the United Kingdom, creating the subgenres of psychedelic folk, psychedelic rock, acid rock, and psychedelic pop before declining in the early 1970s. Numerous spiritual successors followed in the ensuing decades, including progressive rock, krautrock, and heavy metal music, heavy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
