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Old 21st April 2013, 11:20 AM   #1
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Join Date: Apr 2013
Default voltage to sound

I have a device that outputs 0 - 5v DC. What's the easiest way to turn that into sound? The most basic would do. Many thanks folks. Looks like a fun forum!

Last edited by budscott; 21st April 2013 at 08:06 PM.
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Old 21st April 2013, 06:52 PM   #2
Minion is offline Minion  Canada
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What is the output ?? does it output audio , or DC Voltage or AC voltage and what type of device ??

It"s a very broad non-specific question you have there .....
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Old 21st April 2013, 06:58 PM   #3
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It's an EMG sensor. It outputs 0-5 volts and I'd like the output as changing pitches rather than just voltages.
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Old 22nd April 2013, 12:29 AM   #4
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You can run the DC to a voltage to frequency converter. Then run the frequency to an powered speaker. V/F converters are in books of NE555 projects, or you can use half of a a NE567 Phase lock loop, or look on one of the circuits websites for a voltage to frequency converter.
Or you can drive a speaker with the dc and an instrumentation amp, but only elephants will hear the sound.
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Old 22nd April 2013, 05:11 AM   #5
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Thanks. Sounds like the answer. I'll look into that right away.
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Old 22nd April 2013, 05:47 AM   #6
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Would this do?

Click the image to open in full size.

Easy to make?
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