Distortion and directivity in a digital transducer array loudspeaker

The radiation pattern and the position-dependent distortion in a digital tr ansducer array loudspeaker have been investigated and simulated by computer . Harmonic distortion in the sound field is significant and varies with dif ferent transducer arrangements. The directivity increases with increasing f requency and varies with the transducer selection procedure. Randomizing th e selection of transducers at each sample interval improves the directivity but introduces high-frequency noise into the radiated sound field.