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WAVEFORM form mp3 player

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MacIntoshCZ

Active Member
Hello,
what (standart) waveform from mp3 players/smartphone/laptop looks like? It is oscillating with DC offset to be positive only or its AC?
I did not find any mp3 player so i hook up FM radio 3,5jack output to oscilloscope and it was with DC offset. So DC only.
thanks
 
Hello,
what (standart) waveform from mp3 players/smartphone/laptop looks like? It is oscillating with DC offset to be positive only or its AC?
I did not find any mp3 player so i hook up FM radio 3,5jack output to oscilloscope and it was with DC offset. So DC only.
thanks

No, audio outputs to headphones or speakers are purely AC - a DC offset would be VERY detrimental to the speakers/headphones.
 
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