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Software for Acoustic RenderingSLAB is a software system that can be run on a personal computer to simulate an acoustic environment in real time. SLAB was developed to enable computational experimentation in which one can exert low-level control over a variety of signal-processing parameters, related to spatialization, for conducting psychoacoustic studies. Among the parameters that can be manipulated are the number and position of reflections, the fidelity (that is, the number of taps in finite-impulse-response filters), the system latency, and the update rate of the filters. Another goal in the development of SLAB was to provide an inexpensive means of dynamic synthesis of virtual audio over headphones, without need for special-purpose signal-processing hardware. SLAB has a modular, object-oriented design that affords the flexibility and extensibility needed to accommodate a variety of computational experiments and signal-flow structures. SLAB s spatial renderer has a fixed signal-flow architecture corresponding to a set of parallel signal paths from each source to a listener. This fixed architecture can be regarded as a compromise that optimizes efficiency at the expense of complete flexibility. Such a compromise is necessary, given the design goal of enabling computational psychoacoustic experimentation on inexpensive personal computers.
Document ID
20110023957
Acquisition Source
Ames Research Center
Document Type
Other - NASA Tech Brief
Authors
Miller, Joel D. (QSS Group, Inc. Moffett Field, CA, United States)
Date Acquired
August 25, 2013
Publication Date
November 1, 2003
Publication Information
Publication: NASA Tech Briefs, November 2003
Subject Category
Computer Programming And Software
Report/Patent Number
ARC-14991-1
Distribution Limits
Public
Copyright
Public Use Permitted.

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IDRelationTitle20110023922Collected WorksNASA Tech Briefs, November 2003
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