提出了一种利用空气中超声波非线性传播效应制作的、可产生高指向性可听声的新型声束扬声器。
A novel audio beam loudspeaker which based on nonlinear propagation effects of ultrasonic in the air to generate audible sound with high directivity is presented.
一种新颖的声束扬声器是捏造的利用超声波在空气中的非线性传播效应，产生声音的高指向性的声音。
A novel audio beam loudspeaker is fabricated by utilizing the nonlinear propagation effects of ultrasonic in the air to generate audible high directivity sound.
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