Hans Luedtke

Hans Luedtke was a German inventor in the field of music.

Biography

Organist, musicologist and inventor Hans Luedtke developed special [http://archives.pipechat.org/pipechat/2000/December/digest1735.html#Anchor4 Oskalyd] extended organsref|oskal and keyboards that could be used with any desired tone system. Rounded edge hexagonal shaped keys were to be arranged like honeycombs in such a way that intervals would be represented by unique vectors (i.e. a Generalized keyboard). He mentioned tunings with semi-, third-, and quartertones, methods for playing special glissandos, electronic switching between tunings or registers during performances, and he also outlined a notation system analogous to the keyboards and a direct opto-electric recording system.

# Unusual sounds coming from Oskalyd op. 2113 installed in 1926 at Odessa, Ukraine: Große Trommel, Kleine Trommel, Gong, Tamburin, Holzblock, Retgen, große Kirchenglocke, kleine Kirchenglocke, brechendes Glas, Schlittenglöckchen, Turmuhr, Lokomotivenpfeife, Donner, Vogel 1, Vogel 2, Kuckuck, Telephon, Automobil, Jazz (ref. [http://f27.parsimony.net/forum66121/messages/8868.htm orgelforum post 8868] )

Patents

* DE 388,209. Walcker-Luedtke-Hammer Oskalyd Orgelbau. Vorrichtung zum Erhoehen der Klangwirkung von Tasteninstrumenten, Orgeln u. dgl. 1924.01.19
* DE 403,152. Walcker-Luedtke-Hammer Oskalyd Orgelbau. Tasteninstrument, Orgel o. dgl. (GB 218,252, CH 108,096, DK 34,686) 1924.10.09
*DE 630,202. H. Luedtke. Orgelartiges Musikinstrument. (US 1,919,849, GB 390,574) 1936.05.27
*DE 604,495. H. Luedtke. Tastatur fuer Zwecke der Klangausloesung, der Klangaufzeichnung und fuer Registrierzwecke, insbesondere bei orgelartigen Instrumenten. (US 2,003,894, GB 413,483, FR 756,638) 1934.10.23
*DE 630,202 H. Luedtke. Orgelartiges Musikinstrument. (US 1,919,849, GB 390,574) 1936.05.27
*DE 639,272 H. Luedtke. Ausbildung eines Tastenfeldes, insbesondere fuer Musikinstrumente. (US 2,061,364, GB 459,900)1936.12.02
*DE 749,198 P. H. Luedtke. Tastatur fuer Handharmoniken. 1944.11.17

Writing

*"Viol-Chaconne" (J. S. Bach) organ transcription, 1916
*"Seb. Bachs Choralvorspiele." (1918) "BachJb" xv, 1-96.
*"Zur Entstehung des Orgelbüchleins (1717)." (1919) "BachJb" xvi, 62-66
*"Das Oskalyd" (1926) "Musik und Maschin"e 8-9, 385-387
*"Portativ-Positiv-Kleinorgel nach Changie-Prinzip" (1938) 'DIBZ' 39 p. 117 (ref. [http://portativo.it/doc.asp www.portativo.it - Studi e richerche sull'organo portativo] )

External links

* [http://www.walckerorgel.de/gewalcker.de/index.htm Walcker Orgelbau]
* [http://www.ppvshop.de/buch.asp/de/orgel_harmonium/kinoorgeln/416027a66p249p71p56 "Kino-orgeln"] Karl Heinz Dettke, 1998
* [http://netnewmusic.net/wiki/index.php?title=Contraption_IPP_71512 Contraption_IPP_71512] Trimpin
* [http://www.usd.edu/smm/Thym.html NMM 3587] Grand piano with Turkish music by Anton Martin Thÿm, Vienna, ca. 1815, National Music Museum
* [http://www.microtonal.freeservers.com/mclaren/post174.html arcana & incunabula] Brian Mclaren. tuning digest post
* [http://www.geocities.com/harold_fortuin/clavett.htm The Clavette] Harold Fortuin
* [http://www.starrlabs.com/keyboards.html Keyboards] Starr Labs
* [http://www.microtonal.co.uk/notakey.htm The Basics of Generalized Keyboards] Graham Breed
* [http://www.bikexprt.com/music/bosanqet.htm The general keyboard in the age of MIDI] John S. Allen
* [http://www.anaphoria.com/wilson.html Wilson Archives] Kraig Grady

= Bibliography =

*"An Elementary Treatise on Musical Intervals and Temperament." Robert Holford Macdowall Bosanquet. MacMillan & Co., London, 1876.
*"The Bosanquetian 7-rank keyboard after Poole and Brown." Erv Wilson. "Xenharmonikôn" Volume 1 (Spring 1974)
*"The Generalized Keyboard Scalatron." George Secor. "Xenharmonikôn" Volume 3 (Spring 1975)
*"History and Principles of Microtonal keyboard Design." Douglas Keislar. CCRMA Stanford Univ. Dept. Music, Rep. Nr. STAN-M-45. 04.1988

See also

*Prepared Piano
*Turkish music (style)
*Microtonal music