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A digital computer was used to generate four channels of information, which are recorded on a tape recorder. The computer program provides control over the apparent location and movement of a synthesized sound in an illusory acoustical space. The method controls the distribution and amplitude of direct and reverberant signals between the loudspeakers to(More)
The effects of flexion and extension exercises on lumbar discs and low-back pain are controversial. Our goals were to develop a technique and program for digitizing and analyzing discograms and to study the motion of intradiscal dye in response to flexion and extension. Thirty-five patients following awake discography were evaluated with lateral radiographs(More)
The use of the computer to synthesize and process sound in two early forms, additive and FM synthesis, led to new thoughts about sound spectra, tuning and pitch. Detached from their traditional association with the timbre of acoustic instruments, spectra become structured and associated with pitch in ways that are unique to the medium of computer music.(More)