Microphone Array Research at CAIP 
  • Introduction
  • HMA
  • Sound Capture
  • Source Location
  • Sensor Placement
  • Array-Based Speech Recognition
  • Publications
  • References
  • People

    • Maintained by Chris Alvino.  Last updated 7/98. 

    The HMA System 

    The Huge Microphone Array (HMA) is a joint project between Brown University's Laboratory for Engineering Man/Machine Systems (LEMS) and CAIP that started in February 1994 to design, construct, debug, and test a real-time 512-microphone array system and to develop algorithms for its use. Analysis of known algorithms made it clear that signal-processing performance of over 6 Gigaflops would be required; at the same time, there was a need for "portability," i.e., fitting into a small van, that also set an upper limit to the power required. These tradeoffs and many others have led to a unique design in both hardware and software. 

    The resulting system design is illustrated in Figure 1. A detailed system description is provided in (Silverman, 1997). 

     
    Figure 1: The HMA System.  

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