Only voice from sound

[mickys]

Hi!
I have sound and I would like to get from it only voice, without any background noises. In background is one song, witch I have on my computer, maybe it can be helpful?

[Baldrick]

https://forum.videohelp.com/topic328824.html#1699128

[guns1inger]

What you ask is almost impossible. There are tools to try to remove the voice from a track, and leave just the music. They can work, to some degree, but the results are rarely clean. They work on the principal that vocals are usually recorded equally down the centre of the stereo field. what these tools do is take one channel, invert the phase, and overlay it on the other channel. In theory, anything that has equal wave patterns in both channels will be cancelled out. The catch : in the real world it is rare that the recording is completely equal. There is often some effect or backing vocal etc that is slightly off centre, and which remains. You also loose anything else that is equally recorded down the centre, which can include bass and percussion. I have been asked to do this on a number of occasions, and at times the result has been little more than a thing, reedy lead guitar and little else.

What you want is to remove everything but the vocal. Again, theoretically it is possible. However it is a multi-step process, mostly manual, and the success will come down almost solely to how the original is recored.

Step one is to remove the vocals. Open the track in your audio editor, copy it, and invert the phase of the copy. Paste thos over the original track using a mix type paste. Most editors support this function. You should now have a vocal free track (or as close as you can be to having one). If at this stage you still have a lot of vocal or have lost a lot of the music then you may as well stop because the rest of the process won't work.

Assuming you have a relatively clean audio track now, load the original again. Go back tot he clean track and again invert the phase. Copy it, and do a mix paste on the original track. In theory this should cancel out everything but the parts you removed earlier.

There is one more caveat. Compressed audio, especially MP3, is useless for this type of work. The compression screws with the stereo field, and the removal process will produce muddy results. If you don't have a clean audio track, forget it.

[SingSing]

Found this tool on the web.

http://www.musicmorpher.com/free-tutorials/voice-extractor.htm

The basic principle behind is that voice frequency is pretty limited, and known as mid-range. So, if you filtered out most of the high and low frequencies from the sound track then you get mostly voice.