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If an arbitrary section of audio is spliced into a loop there is a very high probability that there will be a 'pop' at the splice point unless something is done to insure the starting and ending samples are at zero. Even just starting playback or letting a loop stop at its end would create a'pop' if it didn't start and end at zero and this would be true of the initial loop as well as any signal that was added to it via overdubbing, etc. And imagine two loops that had been overdubbed without ramps and one ended on a high positive signal value and the other started on a high negative value. If you then segued from the first to the second there would be a huge pop because the audio would be going from a high positive value to a high negative value in just one sample period! The result of all this would be to have pops and clicks all over the place (during normal looping activities) and I think most would find this totally unacceptable.
BTW, you could possibly create two parallel loops with different lengths that could play simultaneously so they would only very rarely be aligned at the loop boundries and this might make the splices less noticeable although still not as invisible maybe as all the overdubs on that DL-4.
Or so I am thinking.........
G
-----Original Message-----
From: Charles Zwicky
Sent: Feb 23, 2010 6:39 PM
To: Loopers-Delight@loopers-delight.com
Subject: RE: Rang III reviews
Ahh... well that is certainly F%^%'ed up... wow...!!
Here is what I am referring to:
After laying down an initial loop, I like to build layers and layers of Ebow. If you leave overdub on, never turning it offsay for 10-15 passesjust building and buildingevery time the overdub passes over the initial start/end point of the loop, the overdub itself will also drop out in time with the initial loop.
It is like there is a wall that no audio shall pass through. Your initial loop creates this wall, and all the overdubs are affected by it. You can also think of it like an audible speedbump on a racing track. Each time you go around the track, you will hit that speedbump.
With the DL-4, I can leave overdub on, and building a wall of Ebow and there is no dropout to the overdubs. They are perfectly seamless and if done right, there is no ending or beginning to the overdub, just a wall of sound.
-- Greg
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