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how to built a two tone siren ? Answered

i will have to built its circuit first and then how to implement it.

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sjoobbani (author)2010-10-17

Do you want to build it all from scratch? if not, you can go to an electronics store (even redio shack) and get piezo beepers, buzzers, or sirens, and build a basic
piezo/switch/battery circuit.

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Kiteman (author)2009-05-30

Take a large cardboard box, and put a small child in it. Tell the child that the box is a fire engine. Record the sound made by the child.

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frollard (author)2009-05-29

Do you want a wailing siren that bends pitch back and forth between the two, or a pee-paw siren like in UK, where it just goes between the two sound... or both sounds mixed together?

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