Now showing items 1-2 of 2
Out-of-band overshoot in narrowband active noise control system
(Northern Illinois University, 1997)
Acoustic noise problems become more and more evident as increased numbers of large industrial equipment such as engines, blowers, fans, transformers, and compressors are being employed. Active noise control (ANC), in which ...
Nondestructive evaluation of ceramics using impact-acoustic response measurement
(Northern Illinois University, 1996)
Advanced ceramics are being proposed as the material to take us into the 21st century. Although advanced ceramics have special attributes, they are very brittle. Defect location and characterization therefore become a ...