acoustic homingacoustic imaging ultrasonic imagingacoustic impedanceacoustic intensityacoustic labryinthacoustic lensacoustic mass acoustic inerfanceacoustic memoryacoustic mirageacoustic modeacoustic ocean current meteracoustic oscillationacoustic pick upacoustic position reference systemacoustic poweracoustic pressureacoustic radiation pressureacoustic radiatoracoustic radiometeracoustic reactanceacoustic reflectionacoustic refractionacoustic resistanceacoustic resonatoracoustic scatteringacoustic signalacoustic sihnalacoustic soundingacoustic sourceacoustic spectrographacoustic stiffnessacoustic surveillanceacoustic transmission systemacoustic treafmentacoustic velocityacoustic vibrationacoustic waveacoustic wave amplifieracoustic wave elastic waveacoustic wave filteracoustic wavelengthacoustic well loggingacousticalacoustical attenuation constantacoustical ohmacoustical phase constantacoustical propagetion constantacoustical reciprocity theoremacousticinterferometeracoustics