a-battery - adobe soil
- acoustic wavelength
- acoustical absorption factor
- acoustical absorptivity
- acoustical filter
- acoustical frequency
- acoustical image
- acoustical matching
- acoustical propagation constant
- acoustical resistance
- acoustical signal
- acoustical transmission
- acoustical transmission factor
- acoustical wave
- acoustically-treated panel
- acoustician
- acoustics felt
- acoustimeter
- acousto-electric
- acquisition system
- acquittance
