Arduino sound levels

[piemadd]

Just a quick question, is there a way to shove the 3 connections from a 3.5mm cable into the arduino. Can I then have each side get measured on a scale from 0-1000 by the loudness and then get the individual values into the serial monitor.

 

 

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[aeroencychris]

http://forum.arduino.cc/index.php?topic=276714.0

essentially no, you need to amplify it somehow

[piemadd]

8 minutes ago, cdsboy2000 said:

http://forum.arduino.cc/index.php?topic=276714.0

essentially no, you need to amplify it somehow

Do you think I could use this, and then replace the mic with a mono input?

 

https://www.sparkfun.com/products/12642

[aeroencychris]

6 hours ago, Implosivetech said:

Do you think I could use this, and then replace the mic with a mono input?

 

https://www.sparkfun.com/products/12642

I'm inclined to say yes but I'm honestly not sure what kind of voltages the mic would normally produce. You could always just try it

[dany_boy]

8 hours ago, Implosivetech said:

Just a quick question, is there a way to shove the 3 connections from a 3.5mm cable into the arduino. Can I then have each side get measured on a scale from 0-1000 by the loudness and then get the individual values into the serial monitor.

Yes you can, but I would not re commend it since the arduino is really slow when it comes to sampling data without a HW decoder, and even if it was fast enough, you would be sampling a waveform, not the amplitude (or loudness in plain terms). I would personally use a simple RC peak detector circuit and measure that. Cheer!

[piemadd]

1 hour ago, dany_boy said:

Yes you can, but I would not re commend it since the arduino is really slow when it comes to sampling data without a HW decoder, and even if it was fast enough, you would be sampling a waveform, not the amplitude (or loudness in plain terms). I would personally use a simple RC peak detector circuit and measure that. Cheer!

wit my experience, the arduino data sampling is fast enough for me 1000 times per second is what i have gotten.

[dany_boy]

10 minutes ago, Implosivetech said:

wit my experience, the arduino data sampling is fast enough for me 1000 times per second is what i have gotten.

1k samples per second is too slow for audio. As a general rule of thumb (for sampling signals) you want to have at least a sample rate 4 times higher than the highest freq component on your signal. Read more here: http://www.ni.com/white-paper/4333/en/#toc2

Again, if you only want to know how "loud" an audio waveform is with an arduino, you can simply use a peak detector: