Vocal Remover Circuit

[nanop]

Hi,
I heard about a vocal remover circuit, it would remove the vocals from most songs.

Can u tell me how it works?
Know of any or have any vocal remover circuits?

Thanks a lot

 

[audioguru2]

Vocals in a recording are usually on both stereo channels at the same level (in mono). A vocal remover circuit adds the frequencies of voices from the other channel out-of-phase so it cancels the same signal in the channel that is in-phase. When music is normally different on each stereo channel then the music doesn't cancel. The mono bass is filtered out of the adding circuit and goes unchanged.

Go to Google and search for Vocal Remover Circuit and the 1st link is a kit with a parts list, pcb and schematic.

 

[nanop]

A vocal remover circuit adds the frequencies of voices from the other channel out-of-phase so it cancels the same signal in the channel that is in-phase.

Can u explain to me more about how this works?

Thanks

 

[audioguru2]

Can u explain to me more about how this works?

Both stereo channels have the vocals at the same level (in mono) and both are in phase.
The circuit takes the 1st channel's vocal sounds, inverts their phase with an opamp inverting amplifier then adds them to the 2nd channel's original sound. Since the sounds are the same but with the opposite phase then they cancel.
Normal stereo music is different on the two stereo channels. Therefore it doesn't cancel.

 

[MP1]

You can get a vocal remover patch for Winamp here:  http://www.analogx.com/contents/download/audio/vremover.htm
It uses a digital algorithm instead of hardware.

MP

 

[Martin Lutharking]

Sir how convert sterio to surround conversion I have sterio signal but I want only music  what can u do pls help me 

 

[audioguru2]

Stereo is recorded on 2 channels and surround sound uses 4 or 5 channels. There are some Oriental ICs that produce fake surround sound when the input is ordinary stereo. Some people think it sounds real. 

 

[admin2]

There are some circuits online, mostly named as Karaoke Circuits but i am not sure how well they will perform.

 

[Sugandhan Vazhumuni]

This is sugandhan from India @Geust nanop thanks to share