Recommended · for beginners
How To - Whistle Controlled Arduino
Why people recommend it
Suggested as a clear walkthrough of boosting a microphone signal with an LM386 and filters so an Arduino can respond to whistling.
Watch for: Others dispute the LM386 as the right amplifier
In their words
This guy is using 2 amps before and after his filters Video, LM386 and this guy claims, that exactly this amp isn't good for the job: recommends NOT using LM386.
mike on arduino.stackexchange.com, Apr 2015. CC BY-SA.
As you are new to this kind of stuff i can suggest you, instead of explaining ( because videos are cool), to watch this video that explains very clearly how to use the lm386 with some filters.
Harry on arduino.stackexchange.com, Mar 2015. CC BY-SA.