user6738: i want to read the audio signal from my smartphone. 
Can i just cut a headphonewire and connect it to the analog in? (Arduino uno)
I sadly dont know much about electronics.
greetings

user3879: No. It partly depends on the phone, but most put out a low voltage AC signal. This would drive the Arduino inputs negative. You can do this by biassing the input at the mid point (+2.5V) and feeding audio in via a capacitor. There are many projects which use similar to record audio.
PS I would not recommend cutting a headphone cord. The wires are very fine, and almost impossible to solder. If you want to do this make a custom cable.

6738: <p>i want to read the audio signal from my smartphone. 
Can i just cut a headphonewire and connect it to the analog in? (Arduino uno)
I sadly dont know much about electronics.</p>

<p>greetings</p>
 3879: <p>No. It partly depends on the phone, but most put out a low voltage AC signal. This would drive the Arduino inputs negative. You can do this by biassing the input at the mid point (+2.5V) and feeding audio in via a capacitor. There are many projects which use similar to record audio.</p>

<p>PS I would not recommend cutting a headphone cord. The wires are very fine, and almost impossible to solder. If you want to do this make a custom cable.</p>
