Pipeline Leak Detection
The Multi-point Acoustic Sensing (MAS) technique uses hydrophones (underwater microphones), mounted at fixed distances along an underwater pipeline.
Leaks and damages will cause pressure fluctuations, which will propagate as acoustic waves through the surrounding medium. Analysis and interpretation is quite complex, since multiple parameters like pipeline material and geometry, temperature etc., modify the sound waves. A DSP system provides adequate processing power and bandwidth.
Barrier-free Traffic Lights
The audio signals generated by a barrier-free traffic light must adapt to the surrounding noise level. To determine this noise level, it is registered by a microphone, digitized, and aurally corrected by a DSP system.