Ableton Forum

Hello there. Has someone tried to do this, apparently very simple:
1) get an audio file with a sin wave (ex. 600 Hz)
2) make a clip
3) warp and make a loop without any clicks (this is the difficult) ?

Many thanks
Angelo

I haven't been able so far but It should be obvious

the problem is zero crossings. as any one who uses sines for bass finds out, sine waves are really clicky when they don't start or finish on the zero line. i generally give up and put small fades at beginning and end

it's easy to find the zero crossings and cut the wave with an editor. What happens is that is I loop in the editor ok, no click, all perfect, while if I loop the same file in Live I hear loud clicks every turn-around

angeloconto wrote:it's easy to find the zero crossings and cut the wave with an editor. What happens is that is I loop in the editor ok, no click, all perfect, while if I loop the same file in Live I hear loud clicks every turn-around

because live is looping in tempo and chances are when it comes to the end of the loop the wave will be somewhere other than zero = CLICK so track fades and filters would be the work around. (as your talking about sine wave its only fundamental so filters wont damage the sound it has no harmonics)

ok, but it happens always, even if I don't make any tempo changes. In this case at least it shouldn't happen. By the way, does exist a way to loop a clip without warp ?

angeloconto wrote:ok, but it happens always, even if I don't make any tempo changes. In this case at least it shouldn't happen. By the way, does exist a way to loop a clip without warp ?

The problem is, even if you truncate the loop at a zero crossing at the beginning, the end might not be on a zero crossing due to the relationship of the wavelength and the tempo. Basically you have a sime wave that resets its phase at the beginning of the loop, and that will sound like a click. Cross fades will get rid of the clicks, just as they do in a sampler loop.

So, why loop a sine wave anyway?