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I was wondering if there was an easy way to do a voice over of a phone call with it actually sounding like someone on the phone instead of just a voice over?

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  • 1
    Convert the audio track to 32kbps?
    – Colum
    Jul 6 '11 at 1:17
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Downsampling it to 8KHz will get you most of the way toward that telephone sound.

Here’s a demo.

Then, to get even closer, use a band pass filter to knock out everything below about 500Hz and above 2000Hz (you can find an example of using Audacity’s equalizer to do this here).

Here’s a demo with the full effect. (Same recording, I didn’t feel like making a second, more-descriptive one. :-) )

(For whatever reason, my copy of Chrome glitches a bit while playing these back. Not sure why. Other programs handle them fine.)

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  • As well as bandlimiting and sharply filtering above and below the aforementioned frequencies, applying some judicious parallel compression and distortion will also help you achieve a more realistic result. Old handsets used carbon mics with notoriously lo-fi reproduction characteristics; whilst most phones now use tiny electrets the circuitry's designed to rapidly and severely compress (in terms of dynamic range) incoming sound with a long release. That's why if your conversational partner blows down the mic, everything goes silent momentarily then ramps back up. Compress the hell out of it! Nov 22 '11 at 18:38
  • the 2nd demo has no audible audio
    – Travis Dtfsu Crum
    Oct 30 '12 at 4:05
  • @TravisDtfsuCrum: Still there for me. What are you using to listen to it?
    – Sidnicious
    Oct 30 '12 at 20:07
  • its back up. It wasn't playing last time when the first demo did. don't know why
    – Travis Dtfsu Crum
    Nov 2 '12 at 22:54

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