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Haken, Lippold 2011-05-07T13:33:29Z 2011-05-07T13:33:29Z 10000-01-01 1990 In Fourier synthesis, natural musical sounds are produced by summing time-varying sinusoids. Sounds are analyzed to find the amplitude and frequency characteristics for their sinusoids; interpolation between the characteristics of several sounds is used to produce intermediate timbres. An ensemble can be synthesized by summing all the sinusoids for several sounds, but in practice it is difficult to perform such computations in real time. To solve this problem on inexpensive hardware, it is useful to take advantage of the masking effects of the auditory system. By avoiding the computations for perceptually unimportant sinusoids, and by employing other computation reduction techniques, a large ensemble may be synthesized in real time on the Platypus signal processor. Unlike existing computation reduction techniques, the techniques described in this thesis do not sacrifice independent fine control over the amplitude and frequency characteristics of each sinusoid. Made available in DSpace on 2011-05-07T13:33:29Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9109708.pdf: 3522688 bytes, checksum: ba6e5b1f4b3ba17397837a8bd6947bf6 (MD5) Previous issue date: 1990 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:56:16Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:26:17-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9109708 (UMI)AAI9109708 http://hdl.handle.net/2142/22238 eng Copyright 1990 Haken, Lippold Music Engineering, Electronics and Electrical Physics, Acoustics Real-time Fourier synthesis of ensembles with timbral interpolation text Electrical and Computer Engineering Electrical and Computer Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.