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4 answers

This is called an electromechanical actuator .You can use a speaker or a piezoelectric crystal .

2006-09-06 03:42:23 · answer #1 · answered by faramarz f 2 · 0 0

You've just described a speaker.

2006-09-06 02:45:20 · answer #2 · answered by rorgg 3 · 2 0

of course...... but u must be authorized to do tat

2006-09-06 02:43:00 · answer #3 · answered by youngfellow 2 · 0 0

telephone

2006-09-06 03:14:54 · answer #4 · answered by cw 3 · 0 0

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