# acoustical phase constant

## Definition

### Electronics

- The imaginary number
__component__of the acoustical propagation constant. Expressed in radians per unit length. acoustical propagation__constant__A__quantity__that measures the propagation properties of sound particles in a given medium. The acoustical propagation constant is comprised of the__acoustical attenuation constant__, the real number component, and the acoustical__phase constant__, the imaginary number component.