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We present numerical methods for studying the relationship between the shape of the vocal tract and its acoustic output. For a stationary vocal tract, the articulatory-acoustic relationship can be represented as a multidimensional function of a multidimensional argument: y=f(x), where x, y are vectors describing the vocal-tract shape and the resulting(More)
We studied listeners' intonation sensitivity to traditional (major and minor) and nontraditional chords. The nontraditional chords have frequency ratios of 3:5:7 and 5:7:9 and, like the major chord, have coincident upper partials and unambiguous fundamental basses. The center tone only of each of these four triads was varied from its just (integer ratio)(More)
A program which makes possible creating, storing, reproducing, and editing functions of time is described. The functions are typical of those generated by human beings. Multiple functions (up to 14) are produced for long periods of time (up to severol hours) at sufficiently high sampling rates to describe fast human reactions (up to 200 samples per second).(More)
This paper describes a new technique for the synthesis of musical sounds which we have named Scanned Synthesis. Scanned Synthesis is based on the psychoacoustics of how we hear and appreciate timbres and on our motor control (haptic) abilities to manipulate timbres during live performance. A unique feature of scanned synthesis is its emphasis on the(More)
Active force-feedback holds the potential for precise and rapid controls. A high performance device can be built from a surplus disk drive and controlled from an inexpensive microcontroller. Our new design,The Plank has only one axis of force-feedback with limited range of motion. It is being used to explore methods of feeling and directly manipulating(More)