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Press Release: October 2003
AuSIM awarded a new 2-year R & D contract ...

For more information, please contact:
AuSIM, Inc
William L. Chapin
+1 (650) 322-8746

October 1, 2003, Mt. View, CA -- AuSIM has been awarded a new 2-year research and development contract with the NASA Langley under their SBIR program, set up to foster small businesses who conduct innovative research. AuSIM will be working with Virginia Tech university to develop more efficient strategies for performing binaural simulation of acoustically disturbed surface structures.

This development contract is a follow-on to the feasibility study completed by AuSIM earlier in the year, in which a number of strategies for making audio simulation efficient enough to use to model surface acoustics were investigated. The results of the feasibility study indicated that several of these strategies were worth further pursuit:

  1. The Singular Value Decomposition (SVD) technique for HRTF matrix processing provides significant performance gains.
  2. The Equivalent Source Reduction (ESR) method significantly reduces the number of point sound sources necessary to simulate an acoustic structure.
  3. The combination of the ESR and SVD methods significantly improves the efficiency of HRTF processing while maintaining acceptable audio simulation quality.
The goal of the new contract is to produce a prototype system that auralizes structural acoustics data produced by existing commercial Finite Element Analysis (FEA) software packages.

The prototype system will have a client-server structure. The primary functions of the client will be to obtain raw acoustics data from the FEA system, apply ESR and other processing to it to extract the most relevant information, and to then send the properly formatted acoustics data to the server. The primary functions of the server will be to receive the acoustic data from the client, apply AuSIM3D algorithms which have been enhanced with SVD algorithms to achieve maximum capacity, and auralize the resulting binaural audio data over high-performance headphones.

With this system, structural designers will be able to hear the results of a specified acoustic disturbance being applied to an electronic model of a structure composed of surfaces, rather than only being able to see plots and tabular data available from today’s technology.

About NASA's SBIR/STTR Programs
The Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR) Programs provide an opportunity for small, high technology companies and research institutions ( RI) to participate in Government sponsored research and development (R&D) efforts in key technology areas.

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