[linux-audio-user] Re: extract and mix

[LinuxMedia]

 >> I'm not familiar with the concept of a "zero crossing". Did
 >> you want to explain further?

 > I'm jumping right in on this thread - I haven't read what's
 > gone before in any detail, but here I go...

 > Have you ever zoomed in on the image of your audio wave file?
 > You see a graphical representation of the sound wave.

 > Zoom right in. You see each point where the wave crosses over
 > the zero line in the middle? That's a "zero crossing".

 > Basically, if you want to cut a piece of audio (without any
 > sort of click where it has been cut), it helps to cut the
 > wave file exactly where the audio line crosses the horizontal
 > zero line.

 > This is because the wave will usually have a nice smooth
 > transition to the silence following it.

 > The alternative is to apply a fast fade-out to the audio,
 > instead of just cutting it.

 > If this wasn't clear enough, then I apologise. I'm rushing,
 > because I have a very busy few days ahead... Please ask.

 > Regards
 > Michael

Thanks Michael. It makes sense. I've used graphical wav editors but I 
wasn't aware of this until you explained it.

Rocco