virtual acoustic center

6.51  effective acoustic center; virtual acoustic center. For an electroacoustic transducer used for sound emission, in a specified direction, for a specified frequency and range of distances, position of the effective or virtual point source from which...

effective acoustic center

6.51  effective acoustic center; virtual acoustic center. For an electroacoustic transducer used for sound emission, in a specified direction, for a specified frequency and range of distances, position of the effective or virtual point source from which...

reference axis

6.50  principal axis; reference axis. Axis passing through the reference point that serves to define angular coordinates for description of directional characteristics of an electroacoustic...

principal axis

6.50  principal axis; reference axis. Axis passing through the reference point that serves to define angular coordinates for description of directional characteristics of an electroacoustic...

reference point

6.49  reference point. Point, for which the position is specified with respect to the transducer geometry, to which electroacoustic characteristics of a transducer are referred, preferably at the origin of angular coordinates on the principal...