Something very simple

[angeloconto]

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

[angeloconto]

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

[oddstep]

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

[angeloconto]

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

[kev herb]

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)

[angeloconto]

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 ?

[pgmjsd]

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?