| 摘要 |
<p>A system and method for classifying vehicles based on the sound waves produced by the vehicles are disclosed. Analog sound pressure levels are input into the system and converted to digital sound pressure levels by an analog to digital converter (22). A spectral analyzer (24) converts the digital sound pressure levels into a power spectrum. Fuzzification functions are applied to the power spectrum by a dimension reducer (26) to produce a characterizing vector that characterizes the power spectrum. A neural network (28) then classifies the vehicle based on the characterizing vector.</p> |
