Hydraulic fluid power. Determination of fluid-borne noise characteristics of components and systems. Measurement of speed of sound in a fluid in a pipe|Power transmission systems, Noise (environmental), Hydraulic pressure, Computer programs, Hydraulic transmission systems, Error detection, Velocity measurement, Fluid equipment, Pressure testing, Mechanical systems, Testing conditions, Measuring instruments, Vibration testing, Acoustic measurement, Accuracy, Mathematical calculations, Longitudinal waves, Classification systems, Transducers, Fluids, Flow measurement, Pipes, Rigid pipes, Frequencies, Hydraulic equipment, Calibration, Temperature, Resonance, Test equipment