A system is provided that employs a programmable computer on which a graphical user interface provides parametric design and analysis of pressure sensor arrays used in aero- or hydroacoustic investigations. The methods employ drilling fluids comprising fragile gels or having fragile gel behavior and providing superior oil mud rheology and overall performance. The second battery monitoring unit may be configured to output data in a second format, the second format being different than the first format. A face-classifying step is then performed.