When I'm speaking in person with someone, I'm completely fine with the way I sound, but when I'm speaking to someone online through a mic, it seems like my voice becomes super high-pitched. That's where my insecurities come in, I guess. I think everyone has that problem, though, where there voice seems to change when they speak through any electronic device.
My singing voice is quite unique (;)), let's say, haha. I can't sing to save my life. If I'm in public, I'll usually just hum to the beat of any song that's stuck in my head. I wouldn't ever dare to sing in public, however, unless, of course, I'm either joking around with someone or imitating an artist or something.