Kiyoteru Hayama / Mbed 2 deprecated voice_changer_multi_function

voice changer, contains echo, change low voice and high voice.

Dependencies:   mbed

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condenser microphone connect to p16, audio amplifier and speaker connect to p18, and pull-upped switch connect to p5 for chage voice of low voice, high voice and ecoed voice.

test video-> http://youtu.be/z-7Hj0u6OlA

/media/uploads/hayama/2014-08-11_20.21.54.jpg

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