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  • Quote Originally Posted by SkyhighRocks
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    My only issue so far is the small gap when I change presets. It was noticeable...maybe not to the crowd and in a mix




    If the crowd can't hear it then, to me, it's acceptable. It would probably bother me initially and then I'd get used to it. Again, that's only as long as it's not enough to be noticed by the audience.

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    • When you think about it, switching amp channels and stomping on different pedals takes at least a few seconds with a conventional rig, so a brief pause between presets shouldn't be a problem. When the music is good, people don't notice any of the little things we do. And when there are hot girls dancing to my music, I'm sure not focused on my preset switches either.

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      • Quote Originally Posted by Den
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        When you think about it, switching amp channels and stomping on different pedals takes at least a few seconds with a conventional rig, so a brief pause between presets shouldn't be a problem. When the music is good, people don't notice any of the little things we do. And when there are hot girls dancing to my music, I'm sure not focused on my preset switches either.






        I agree! It just seemed like more than a millisecond gap...closer to a second. It was more than I'm used to. I'll try to pay a little more attention to it at tonight's gig. Other than that, this thing rocks
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        • I just fired up my iPB-10 and tested the switching ... no lag of any sort on mine. I jumped through presets and also switched pedals in and out and it seems instantaneous to me. When I'm using the extension cable, and I load preset from the library that's not assigned to a patch location, I get a few secong lag while the preset loads ... but no lag with presets assigned and onboard.

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          • Nothing like quantification...



            So I ran audio into Sonar X1, and recorded what happens when you switch presets.







            There are a few instructive things here. First, it seems that switching either occurs on a zero-crossing, or there's a very quick fade to zero. This would account for the lack of clicks.



            Second, the gap is totally silent.



            Third, I switched several times and the gap was a pretty constant. For this one I made sure to go from a preset with delay to another with delay so that the delay buffer would have to be flushed prior to switching (as the tails don't spill over to the next preset, I assume the buffer is cleared). The gap measured about 58.5 milliseconds, which if you think about it, is quite good to dump a whole set of parameters and load a new set.



            As a point of comparison, for analog effects - not even effects that needed to load parameters - I always built in a 10ms fade out + 10ms fade-in when switching between effects for clickless switching.



            As a rough rule of thumb, I would consider 100ms to be the dividing line between okay and not okay. Under 100ms, people will have a hard time noticing a gap. Over 100ms, you can detect a gap.
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            • My GSP1101 and Control 2 combo give zero gap to my ears.

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              • As far as I'm concerned Craig ... if you aren't going to make any effort to answer our questions here professionally, then why even bother with these pro reviews???? LOL



                Seriously, thanks for this info. Much appreciated.

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                • Time for some more audio examples. For this one, I picked the first patch in Bank 2 - Plexi-Drive.



                  The first four measures are just the amp/cab and the Screamer distortion pedal, which is the present default. For the next four measures, I hit the footswitch to bring in the Chorus effect. The next four measures add in tape echo, and after that, four measures that also add in reverb.



                  For good measure, there's a lead sound toward the end that uses all the effects as well.



                  I must say that I think the cabs are really good, that's where a lot of amp sims fall down. These sound very organic, and I haven't found an iPB-10 cab yet with enough fizz to demo how to get rid of fizz. But I'll keep looking



                  FYI the guitar is a Gibson Firebird X, set for a Les Paul neck pickup emulation.
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                  • Quote Originally Posted by mannydingo
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                    My GSP1101 and Control 2 combo give zero gap to my ears.




                    Well, I certainly wouldn't consider the gap in the iPB-10 objectionable...but hey, I can post an audio example of what happens when you switch!



                    I'll go plug in some patch cords and fire up Sonar again. And I'll make sure to switch in the middle of a power chord so it's worse-case conditions.
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                    • Quote Originally Posted by Den
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                      As far as I'm concerned Craig ... if you aren't going to make any effort to answer our questions here professionally, then why even bother with these pro reviews???? LOL




                      I must admit that I'm enough of a geek that doing this kind of analysis is part of the fun of doing these reviews. Also, I like the chord progression I did in the previous "build a patch" example, so I think I'll steal it from myself.
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                      • Well, the proof is in the pudding, as they say...however, this isn't pudding, so instead of eating this post, please download the audio example.



                        I must say that on playback, the gap seemed like it wasn't even close to being an issue. I checked the spacing between patches to see if somehow it was less than 50ms, but no, it was a pretty constant 50 or so ms from one patch to another.



                        Just to make it as nasty a test as possible (DigiTechRep wouldn't expect anything less from me), not only did I keep the sound sustaining through the patch changes, after recording the audio example I went back and normalized each of the sections of audio to provide the greatest possible contrast between full volume, and the silence that occurs during a gap.



                        Pretty impressive AFAIC, I know what's having to happen internally to change patches.



                        Oh, and by the way...I paid special attention to how hard it would be to nuke the iPad while hitting the footswitches. You would have to make a serious, conscious effort if you wanted to damage it. The "blast shiel"' in post #92 would make it virtually impossible.
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                        • That's not what I would call a gap. I think the IPB-10 does just fine in that department as per your clip. I don't know how SkyHighRocks is getting a gap. Maybe he's using a patch that uses every effect including the kitchen sink effect.

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                          • Quote Originally Posted by mannydingo
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                            That's not what I would call a gap. I think the IPB-10 does just fine in that department as per your clip. I don't know how SkyHighRocks is getting a gap. Maybe he's using a patch that uses every effect including the kitchen sink effect.




                            Well, I agree that it's not significant. Technically, 58ms is a gap, but not one with practical ramifications.



                            Isn't it cool we can post audio examples?



                            Interestingly, that 58 ms seems pretty much constant no matter which patch I threw at it. Maybe I didn't try a challenging enough patch, or maybe that's just how long it takes to flush & load all parameters.



                            What might be happening with SkyHighRocks is that there's a psychological component to changing patches. It's easy to perceive changing from one patch to another as having a "gap" because of the differential between sounds. In fact, I think that perhaps normalizing the sound clips minimized this effect, because there was less perceived volume difference between sounds.



                            But yeah, the iPB-10 sure is a whole other animal compared to those underpowered old-school digital devices that burped for a few seconds every time you changed presets!
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                            • I can tell you what used to make me think my RP500 and RP1000 had a bigger gap than they did when playing at bedroom volume: My clicking and letting go immediately as if the switch was on fire and would burn through my shoe. I don't know why I would do that. It did something psychologically to me, similar to what you are saying. When I started changing presets without taking my foot off immediately I didn't perceive such a long gap.



                              Now, with the GSP1101, I can do it the old way or the new way and I hear no gap. It seems there has to be some kind of gap for the mind to falsely elongate it. The second chip in the GSP1101 is just such a sweet extra. Mind you, I'm not talking about a patch with reverb or delay leaving tails. If you add rever or delay tails into the equation, not only is there zero gap but I guess you could call it going into the negative millisecond numbers.

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                              • I have to ask where there is a Phrase Looper. Certain sites, such as sweetwater, describe the product to contain a phrase looper. I have grown very fond of the simple looper I had with my rp1000 but now am disappointed as it appears there is no such looper with the ipb. I have a fs3x footswitch (this footswitch allows control of the looper when plugged into the rp1000) that I even tried hooking up to the "footswitch" jack on the back mentioned earlier in this post, but it wasn't what I expected. It actually came up asking me to calibrate my expression pedal which I thought was rather odd. Please tell me something is coming down the pipe for a looper, and also for a tap tempo button. I can't believe these features were skipped, and I am somewhat disappointed by that.

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