One of the most significant ways that people convey information is through sound. The production directed sound dramatically increasing in terms personal privacy contemporary culture. Ultrasonic Unidirectional Speaker project aims to design and develop a compact, lightweight, energy-efficient speaker system can deliver specific direction using ultrasonic waves. utilises non-linear properties ai...

in this paper, the efficiency of persian speech phonemes from the point of view of efficiency in speaker recognition has been studied, and then with due attention to efficiencies, the ranking of phonemes has been done. for estimating the efficiencies of phonemes, we have introduced one criterion that has been defined in the form of phonemes “inter speaker distance” to “intra speaker distance” r...