| |
Abstract:
We describe the first single microphone sound localization
system and its inspiration from theories of human monaural sound
localization. Reflections and diffractions caused by the external
ear (pinna) allow humans to estimate sound source elevations using
only one ear. Our single microphone localization model relies on a
specially shaped reflecting structure that serves the role of the
pinna. Specially designed analog VLSI circuitry uses echo-time
processing to localize the sound. A CMOS integrated circuit has
been designed, fabricated, and successfully demonstrated on actual
sounds.
|
