Another question our users often ask is “how to extract voice from songs ?”, “how can i make an acapella of this song” ? etc..
Vocal isolation is a black science, it’s the voodoo of audio processing… or just a good old spectral substraction !
The principle is basic, find a part of the song without the voice, and substract it from a part with the voice, so you are left with only the voice part. The ideal situation is where you have the normal song (voice + music) and an instrumental version of the same song.
You have music that you want to broadcast, you have set up a web radio, and now you need this “FM radio sound” : loud, clear and powerful.
You can set up a chain of effects to try to achieve this FM radio sound : multiband compressor (s), equalizer, enhancer… Or you can try this “all in one” FREE plugin, intended for FM broadcasting : Continue reading →
Adding a metalic feeling to any voice to make it sound like a robot is easy.
Of course if you want the extra funkyness you can use a vocoder plugin in Wavosaur
But to change your voice into a nice robot (not a bad robot, this will be for a next tutorial), just 2 or 3 clicks are necessary :
For simpler & faster results, you can use amplitude modulation
How to sound like a robot ?
1) launch Wavosaur and load a voice sample
2) go to Menu Tools -> Synthesis -> Simple
Synthesis tool menu
3) now use these values for the parameters :
– Frequency : 75 Hz
– Type : Sinus
– Volume : 0 dB
– Apply : “Apply on all current file” OR “Apply only on selection” if you just want to robotize a selection you made on your file
– Advanced : Multiply with audio file – this is the most important! this is the Amplitude modulation! –
4) click the “OK” button
Now you should have results like this :
extra bonus more plus (gating) :
Of course you can try other values for the frequency, if you select low frequency values (under 20 Hz), you start to have a tremolo effect, or gate effect if you change the waveform to abs square
but the synthesis tool is not well suited for gate effect, for that, there is the gapper effect
go to Menu Effect -> Gapper
Gate me !
Now you can select smoother waveforms for gating your file (and apply fade in/out to prevent click noises)
Sometimes you need to slice your breakbeat samples into small pieces, with just the hits, then you can import the parts into any sampler / synth / etc to re arrange, change speed, apply effect individually, whatever you want.
This is only 2 or 3 click in Wavosaur !
All the features you need are already in Wavosaur : auto-slice and export all regions.
How to auto slice a breakbeat / drum loop in Wavosaur ?
1) launch Wavosaur and load a funky breakbeat, or groovy drum loop
2) Select Menu Tools -> Slicing/Region -> Auto slice region
slice me in the morning
as you can see, you have now 7 markers automatically inserted, determining 8 regions.
you can manually add markers if you want to create more / smaller regions.
3) now go to Menu File -> Export -> Export all regions
exporting all regions into multiples samples
This will save 8 samples, with the name you choose and a suffix : breakbeat-sample_M000 to breakbeat-sample_M008
4) bonus track :
in the Slicing / Region submenu you have another funky feature : “Scrambling regions”
once you have defined region (automatically with auto slice or manually), the scrambling feature will change the position of the region, in a random way.
now let’s add some pitch shifting (Menu Process -> Pitch Shift -> Simple) and … INSTANT JUNGLE !!
Original drum loop :
Auto slice + scramble region + pitch shift :
Auto slice + scramble region + pitch shift + a little reverse on some snare
With Wavosaur it’s possible to process a channel, without affecting the other channel, for example, you can change the volume on the left channel without changing right channel on a stereo file. Continue reading →