to filter parts of a sound

[Raiden90]

hello together,

is it possible to filter parts of sounds like to cut drums or maybe a voice so that I have just the instrumental left?

king regards

[johnsold]

To do that would require much more sophisticated signal processing than just filtering. 

For example an impact sound like the drums has a very broad frequency spectrum which would certainly overlap with that of a voice.   Similarly, most tonal instruments operate in the same frequency range as voices.

Lynn

[Bob_Schor]

To expand a bit on Lynn's excellent (and very relevant) response, if you have a sound signal sampled at an appropriate rate and have sufficient expertise in sound analysis algorithms, I'm pretty sure that you would be able to implement a (complex) sound waveform analysis system using LabVIEW.  The problem isn't LabVIEW's problem, but rather the complex "pulling apart" of the various sound waveforms (which are simply added together when the sound is recorded).

Bob Schor

[ijustlovemath]

Both good points have been mentioned. A really simple "algorithm", if you can call it that, is to take the left and right tracks, invert one, and mix them back together. Usually this deadens the sound a little bit, but vocals get reduced well. IMO LabVIEW is not the best software to use for this. Try Audacity.

Source: http://stackoverflow.com/questions/3673042/algorithm-to-remove-vocal-from-sound-track

[alexderjuengere]

there's this LabView Add-On "Vocal Remover for myRIO by Altenbach" http://sine.ni.com/nips/cds/view/p/lang/en/nid/212774

[...] The algorithm is simple: typical studio recordings have the vocal track centered (in other words, identical in the left and right channel) while all other tracks are not. Taking the difference between the two channels eliminates the vocal track while retaining all others.[...]