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==Patents== ==Patents==
*''DE 388,209'' Walcker-Luedtke-Hammer Oskalyd Orgelbau. Vorrichtung zum Erhoehen der Klangwirkung von Tasteninstrumenten, Orgeln u. dgl. 1924.01.19 *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 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 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 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 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 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 *DE 749,198 P. H. Luedtke. Tastatur fuer Handharmoniken. 1944.11.17


===Writing=== ===Writing===
*''Seb. Bachs Choralvorspiele.'' (1918) BachJb xv, 1-96. *"Seb. Bachs Choralvorspiele." (1918) ''BachJb'' xv, 1-96.
*''Zur Entstehung des Orgelbüchleins (1717).'' (1919) BachJb xvi, 62-66 *"Zur Entstehung des Orgelbüchleins (1717)." (1919) ''BachJb'' xvi, 62-66
*''Das Oskalyd'' (1926) Musik und Maschine 8-9, 385-387 *"Das Oskalyd" (1926) ''Musik und Maschin''e 8-9, 385-387
*''Portativ-Positiv-Kleinorgel nach Changie-Prinzip'' (1938) DIBZ 39 p. 117 (ref .) *"Portativ-Positiv-Kleinorgel nach Changie-Prinzip" (1938) 'DIBZ' 39 p. 117 (ref .)


==External Links== ==External Links==
* *
* Karl Heinz Dettke, 1998 * Karl Heinz Dettke, 1998
* Trimpin * Trimpin
* Grand piano with turkish music by Anton Martin Thÿm, Vienna, ca. 1815, National Music Museum * Grand piano with turkish music by Anton Martin Thÿm, Vienna, ca. 1815, National Music Museum
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== <font size = 2> '''Bibliography''' </font size = 2> == == <font size = 2> '''Bibliography''' </font size = 2> ==
*''An Elementary Treatise on Musical Intervals and Temperament'' Robert Halford Macdowall Bosanquet. MacMillan & Co., London, 1876. *''An Elementary Treatise on Musical Intervals and Temperament.'' Robert Halford Macdowall Bosanquet. MacMillan & Co., London, 1876.
*''The Bosanquetian 7-rank keyboard after Poole and Brown'' Erv Wilson Xenharmonikôn Volume 1 (Spring 1974) *"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) *"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 *"History and Principles of Microtonal keyboard Design." Douglas Keislar. CCRMA Stanford Univ. Dept. Music, Rep. Nr. STAN-M-45. 04.1988


==See also== ==See also==

Revision as of 21:40, 16 November 2005

Patent drawing GB 413,483, accepted 19.07.1934

Hans Luedtke (d.1973)

Biography

Organist, musicologist and inventor Hans Luedtke developed special Oskalyd extended organs* 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. orgelforum post)

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

  • "Seb. Bachs Choralvorspiele." (1918) BachJb xv, 1-96.
  • "Zur Entstehung des Orgelbüchleins (1717)." (1919) BachJb xvi, 62-66
  • "Das Oskalyd" (1926) Musik und Maschine 8-9, 385-387
  • "Portativ-Positiv-Kleinorgel nach Changie-Prinzip" (1938) 'DIBZ' 39 p. 117 (ref .)

External Links

Bibliography

  • An Elementary Treatise on Musical Intervals and Temperament. Robert Halford 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