タイトルまたは説明
~Piezoelectric ultrasonic horn and the speaker have what
distinction?
Ultrasonic horn is a kind of horn, many speakers species, according
to the exchange principle can be divided into electric (i.e. moving
coil type), electrostatic (or capacitance),
Electromagnetic (i.e. reed type), piezoelectric (i.e. crystal type)
etc..
The common pronunciation is the speaker 's voice, the human ear can
hear, at frequencies below *0KHZ;
While the piezoelectric ultrasonic horn sound is beyond the range
of human hearing, namely at frequencies above *0KHZ;
Using this principle: can be used in mouse expelling device, the
device of driving birds, dog trainer and other products
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| モデル番号: |
DL-G3840
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