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- Donald_Leslie abstract "Donald James Leslie (Born: April 13, 1911, in Danville, Illinois – Died: September 2, 2004, in Altadena, California) created and manufactured the Leslie speaker that refined the sound of the Hammond organ and helped popularize electronic music. Leslie experimented with devices to, in his words, improve the sound of the Hammond organ, based on experience he gathered from other jobs, including fixing radios and one at the Naval Research Laboratory in Washington, D.C., during World War II. Donald Leslie was very impressed with the sound of a Hammond organ in a concert hall but less taken with it in a confined space -- the sound had no resonance, and the pure electronic oscillators sounded "dull, shrill, and still" to Leslie's ear. To remedy this problem, in 1937 he invented a special speaker which rotates inside its cabinet, producing a Doppler effect which modulates the sound, to a certain extent imitating the resonance of the organ in a large, hall space by projecting it in 360 degrees. This device was eventually one of over 50 patents he owned.When Leslie presented Laurens Hammond with his handmade organ speaker, the company rejected it. Leslie then chose to manufacture his Leslie speaker on his own. He started a company, Electro Music, to produce the speakers. Wanting to keep control of their organ's sound, Hammond went to great lengths to defeat Leslie's invention: changing connectors on newer models, and forbidding Hammond organ merchants to sell Leslie speakers. In 1965 his company was acquired by CBS; Leslie remained as a consultant long enough to see Hammond's death in 1973, at which point Hammond's company warmed to the invention, officially honoring it in 1978. Leslie retired in 1980.It was predominately used for liturgical and gospel church organs creating a Theatre Organ Tremulant effect. It was used with the Hammond Tone Wheel Organ as well as others in the 1940s through 1950s as well as today. The final version of the Leslie speaker is the Rotosonic drum wherein a loudspeaker is physically mounted in the spinning rotor with a narrow aperture (opening) to produce a very authentic Theatre Organ tremulant sound. It was also used in psychedelic and rock music of the 1960s and 1970s. It has since made its way into many genres of music, including pop music and jazz. It wasn't until the 1980s that Hammond bought Leslie's product to include with their organs. Leslie was inducted into the American Music Conference Hall of Fame in 2003.".
- Donald_Leslie birthDate "1911-04-13".
- Donald_Leslie birthPlace Danville,_Illinois.
- Donald_Leslie birthYear "1911".
- Donald_Leslie deathDate "2004-09-02".
- Donald_Leslie deathPlace Altadena,_California.
- Donald_Leslie deathYear "2004".
- Donald_Leslie occupation Donald_Leslie__2.
- Donald_Leslie wikiPageID "969120".
- Donald_Leslie wikiPageLength "4059".
- Donald_Leslie wikiPageOutDegree "16".
- Donald_Leslie wikiPageRevisionID "682203415".
- Donald_Leslie wikiPageWikiLink Altadena,_California.
- Donald_Leslie wikiPageWikiLink Category:1911_births.
- Donald_Leslie wikiPageWikiLink Category:2004_deaths.
- Donald_Leslie wikiPageWikiLink Danville,_Illinois.
- Donald_Leslie wikiPageWikiLink Doppler_effect.
- Donald_Leslie wikiPageWikiLink Hammond_organ.
- Donald_Leslie wikiPageWikiLink Laurens_Hammond.
- Donald_Leslie wikiPageWikiLink Leslie_speaker.
- Donald_Leslie wikiPageWikiLink Naval_Research_Laboratory.
- Donald_Leslie wikiPageWikiLink Psychedelic_music.
- Donald_Leslie wikiPageWikiLink Radio.
- Donald_Leslie wikiPageWikiLink Rock_music.
- Donald_Leslie wikiPageWikiLink United_States_Naval_Research_Laboratory.
- Donald_Leslie wikiPageWikiLink Washington,_D.C..
- Donald_Leslie wikiPageWikiLink World_War_II.
- Donald_Leslie wikiPageWikiLinkText "Donald Leslie".
- Donald_Leslie birthDate "1911-04-13".
- Donald_Leslie birthPlace "Danville, Illinois, United States".
- Donald_Leslie dateOfBirth "1911-04-13".
- Donald_Leslie dateOfDeath "2004-09-02".
- Donald_Leslie deathDate "2004-09-02".
- Donald_Leslie deathPlace "Altadena, California, United States".
- Donald_Leslie hasPhotoCollection Donald_Leslie.
- Donald_Leslie imagesize "200".
- Donald_Leslie name "Donald James Leslie".
- Donald_Leslie name "Leslie, Donald".
- Donald_Leslie nationality "US".
- Donald_Leslie occupation "* Inventor of Leslie Speaker * Audio Engineer".
- Donald_Leslie shortDescription "American musician".
- Donald_Leslie wikiPageUsesTemplate Template:Find_a_Grave.
- Donald_Leslie wikiPageUsesTemplate Template:Infobox_person.
- Donald_Leslie wikiPageUsesTemplate Template:Persondata.
- Donald_Leslie wikiPageUsesTemplate Template:Portal.
- Donald_Leslie description "American musician".
- Donald_Leslie description "American musician".
- Donald_Leslie subject Category:1911_births.
- Donald_Leslie subject Category:2004_deaths.
- Donald_Leslie type Agent.
- Donald_Leslie type Person.
- Donald_Leslie type Person.
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- Donald_Leslie type NaturalPerson.
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- Donald_Leslie type Q215627.
- Donald_Leslie type Q5.
- Donald_Leslie type Person.
- Donald_Leslie comment "Donald James Leslie (Born: April 13, 1911, in Danville, Illinois – Died: September 2, 2004, in Altadena, California) created and manufactured the Leslie speaker that refined the sound of the Hammond organ and helped popularize electronic music. Leslie experimented with devices to, in his words, improve the sound of the Hammond organ, based on experience he gathered from other jobs, including fixing radios and one at the Naval Research Laboratory in Washington, D.C., during World War II.".
- Donald_Leslie label "Donald Leslie".
- Donald_Leslie sameAs Donald_Leslie.
- Donald_Leslie sameAs Donald_Leslie.
- Donald_Leslie sameAs Donald_Leslie.
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- Donald_Leslie sameAs Q327122.
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- Donald_Leslie wasDerivedFrom Donald_Leslie?oldid=682203415.
- Donald_Leslie givenName "Donald".
- Donald_Leslie isPrimaryTopicOf Donald_Leslie.
- Donald_Leslie name "Donald James Leslie".
- Donald_Leslie name "Donald Leslie".
- Donald_Leslie name "Leslie, Donald".
- Donald_Leslie surname "Leslie".