In Praise of the Virtual Capo ***FW 5.02b1***

After some deliberation about whether or not to update to 5.0b with a gig coming up this week, I decided to back up my presets and go for it. Other than the one bug I found in the virtual capo described here (which I'm now understanding is a known issue), I was pleasantly surprised to find that it works better and faster than in 4.1. I spent some time today taking latency measurements and going between 4.1 and 5.0b just to be sure and the results are in: the VC in 5.0 actually is better, even if there was no dedicated and focused improvement to the block. I can only assume some of the other under the hood changes in this update affected the workings of the VC (maybe the Pitch block as a whole; I didn't test anything else because I don't use anything else).

Equipment used for the test:
  • Variax JTV-59 using magnetic pups
  • Shure Beta 58
  • Motu M4 Interface
  • 2018 Mac Mini running Logic Pro X
  • HX Stomp running FW 3.1
  • FM3 running 4.1 and 5.0b

Methods:
  1. Plugged the Beta 58 into channel 1 of the M4.
  2. Plugged the guitar modelers' output into input 2 of the M4
  3. Recorded tracks simultaneously by tapping the mic to a string near the bridge of the guitar between 5 and 10 times at 1 second intervals so the mic sound was recorded at the same time the magnetic pickups would pick up the sound.
  4. Zoom in on WAV files to compare start of sound (mic signal) with the various modelers' & configurations' latency-delayed sound.
  5. Control: plugged the guitar straight into input 2 and performed step 3 above, resulting in a 0ms latency difference of the measured signals.
  6. Resolution: whole number latency in ms (in other words, you won't see 2.345ms latency).
  7. Precision: Measurements are approximate with a margin of error of 1-2ms; when you zoom super far in to a WAV graphic, it can be difficult to determine precisely where the signal actually starts, but you can get amazingly close.
  8. Note: I only tested pitch shifting by 1/2 step or 1 semitone.

Results:
  • HX Stomp FW 3.1 blank preset: 2ms
  • HX Stomp FW 3.1 Poly Capo: 20ms
  • FAS FM3 FW 4.1 blank preset: 3ms
  • FAS FM3 FW 4.1 VC-Only Preset: 20-80ms, occasional double/repeated notes
  • FAS FM3 FW 4.1 VC in full preset: 20-65ms
  • FAS FM3 FW 5.0b blank preset: 3ms
  • FAS FM3 FW 5.0b VC-only preset: 20ms
  • FAS FM3 FW 5.0b VC in full preset: 20ms
  • Digitech Drop: 20ms
  • Variax Electric model 1/2 down: 18ms
  • Variax acoustic model 1/2 down: 24ms

Discussion:
I'm obsessed with latency; I'm very sensitive to it. But I'm very pleased with how well the VC works in 5.0b. I conducted similar tests a while ago with the Axe Fx III, Drop Pedal, HX Stomp, and the Variax. This was before I had my FM3 (video was recorded in March of last year; needs an update). I had also tested the HX's Poly Pitch, not the Poly Capo. I can't find exactly what the difference in terms of algorithm, if any, but there are fewer/different parameters in the Poly Capo.

My final analysis is that the current FM3 Virtual Capo is now up there among the best. It's much more stable than it was before. Cleans still sound a little wonky and warbly when pitch-shifted, but definitely still usable in a full band context (of if you wanna jam to a recording that's tuned down from standard. I'm very excited to get together with the band this weeks and see if it maintains the stability and consistency that it exhibited during my tests and jamming. I no longer feel the need to go back to my Axe Fx III & FC6 setup.

I know this has become a contentious topic on these and other forums, and I know the old-school people eschew tech like this and just bring extra guitars, tune down, or transpose the song to work in their current tuning, but at least this gives us one more option. I've been gigging the VC in 4.1 for quite a while so I've learned to work with its quirks. This improved stability will make using it much more relaxing.

All this to say: Even though the FM3 didn't receive the Axe Fx III/FM9's improved Pitch Block update, the Virtual Capo is, in fact, better; if only incrementally, it's still better than it was. I look forward to the full 5.0 release and whatever comes next!

As someone who hasn't even tried the VC, was the previous beef (Prior to 5.0 beta) due to poor latency? Or accuracy? Both?

Has FAS commented on the latency improvements anywhere else, other than the funny muppets reference?
 
As someone who hasn't even tried the VC, was the previous beef (Prior to 5.0 beta) due to poor latency? Or accuracy? Both?
Both, generally, but my biggest beef was the latency as you can't really notice artifacts (I guess what you mean by "accuracy") with overdrive/distortion. I rarely use it for clean, so it's not a huge concern if it doesn't sound too good with clean, although I'm going to try the above compressor trick to see if that improves the tone.
Has FAS commented on the latency improvements anywhere else, other than the funny muppets reference?
Not at all; here or elsewhere, which I still find incredibly odd. I think they probably want to respond and tell me it's all in my head, but there're tons of testimonials as well as my objective data from measuring the VC in 4.1 and then again in 5.0b1. The muppets thing was just a reference to the back and forth between me and one dude who was being a d***** canoe to me for literally no reason (whose later post was outright abusive and was reported, removed, and the user blocked).

I suspect they don't want to say anything about it because it obviously wasn't intentional; and if they acknowledge it and then in the 5.0 official release the VC is back to being as bad as it was in 4.1, then they've got some 'splainin' to do. But if they don't say anything and it's back to being as bad as it was in 4.1 when the official 5.0 releases, then no one can say anything since they officially never made any improvements and it was never mentioned in the release notes, so there's literally nothing to complain about lol.

If, however, they figure out what they did to make it so incredible and maintain that in the official 5.0 FW, then they add that to the release notes and score a touchdown. In other words, even acknowledging that users MIGHT be hearing any difference in the VC has potential to harm them, whereas not mentioning it has nothing but benefits for them. So, as much as I'd like to see an official statement or even confirmation of my data, I totally get why they're not saying a word.
 
I absolutely don't care because it takes me 2 minutes to tune my guitar to what I need.

The FM3 is amazing, and while the VC falls short, they tried. Sometimes I have a hard time grasping the fact that people are literally complaining that the FM3 can't tune their guitars down for them.
Kablesp, welcome to the forum!

Perhaps I can help you understand why a working VC might be so important to some folks in a live situation. As you can imagine, when you're standing in front of 3,000 people, and you start the next song, you can't take 2 minutes to tune in between songs.
I use my AXE3 for 80 percent of my shows. I generally take four guitars to a show and use all of them. They are tuned differently. I generally use the VC on the Axe3 for 2-3 songs, and it makes the show go FAR smoother than if I am switching guitars or re-tuning. Band mates have remarked how much better it makes the shows run. It works great!
But, when I have fly gigs and can't bring my rack with me, I use the FM3 and only take two guitars, because of the cost of cartage and airplane luggage.
In this case, I would not only use the VC on the 2-3 songs I normally do, I would like to use it for another 4-5 songs to prevent re-tuning, with less guitars.

So you can see how useful a good VC might be in this situation, when you can't bring the Axe3 or all your guitars, but you still have to play the same 2-hour show.

I love Fractal equipment, and own a lot of it. I appreciate all of their hard work, and I appreciate that they tried to update the VC. If it can't be done, I accept that is the reality. But for my situation, a usable VC is more important than adding new amp or new drive pedal. I already have a ton of those.

I also understand that it may be different for other people, and hope that they get all of their needs met, too.

This post is really not meant to start another argument, so I hope no one takes it that way. Because, for me, it isn't an argument. I'm just stating what works for my situation, and hoping it helps other forum members appreciate why it is important to me, and maybe some others.
 
I suspect they don't want to say anything about it because it obviously wasn't intentional; and if they acknowledge it and then in the 5.0 official release the VC is back to being as bad as it was in 4.1, then they've got some 'splainin' to do. But if they don't say anything and it's back to being as bad as it was in 4.1 when the official 5.0 releases, then no one can say anything since they officially never made any improvements and it was never mentioned in the release notes, so there's literally nothing to complain about lol.

If, however, they figure out what they did to make it so incredible and maintain that in the official 5.0 FW, then they add that to the release notes and score a touchdown. In other words, even acknowledging that users MIGHT be hearing any difference in the VC has potential to harm them, whereas not mentioning it has nothing but benefits for them. So, as much as I'd like to see an official statement or even confirmation of my data, I totally get why they're not saying a word.

I follow, and I think that's possible. Except it would be odd for FAS to implement a VC improvement and not note it in the beta notes since the purpose of the beta is to test changes. But FAS has no obligation to list every single change from 1 version to the next, so maybe it was intentionally omitted for simplicity in releasing the beta. Either way, I'm looking forward to full 5.0.

I have a gig this weekend (won't need VC), but I'm going to test Beta this week and use it if it seems stable. My presets aren't complex,I only use 2, and only have 1 external pedal, so as long as it goes well this week, I'll run with it since my use of the FM3 isn't extremely complex which limits the potential bugs, in my mind anyway..... the Reverb CPU improvements helped quite a bit on my main preset.
 
I follow, and I think that's possible. Except it would be odd for FAS to implement a VC improvement and not note it in the beta notes since the purpose of the beta is to test changes. But FAS has no obligation to list every single change from 1 version to the next, so maybe it was intentionally omitted for simplicity in releasing the beta.
I think that's just it, though; it probably wasn't an intentional or deliberate improvement. I think it was a byproduct of other changes, one of which actually made the tuner wonky. Given that they wouldn't intentionally make a utility on the machine worse, it seems to follow that the VC's change was equally unintentional. You're right though - they don't need to tell us everything, and they might be working on it behind the scenes and just want to see if anyone notices lol! To be honest, even though the VC is better, there may be other modules in the Pitch block that are worse; or maybe certain settings within the VC that are worse. I guess my tests are woefully incomplete to declare that the VC is better, wholesale. I only tested it with the settings I use (and one more extreme setting). Hopefully it's not worse in other areas, though, especially ones that more people use than the VC, but I haven't seen much scuttlebutt about the pitch block other than VC-related chatter.



Kablesp, welcome to the forum!

Perhaps I can help you understand why a working VC might be so important to some folks in a live situation. As you can imagine, when you're standing in front of 3,000 people, and you start the next song, you can't take 2 minutes to tune in between songs.
I use my AXE3 for 80 percent of my shows. I generally take four guitars to a show and use all of them. They are tuned differently. I generally use the VC on the Axe3 for 2-3 songs, and it makes the show go FAR smoother than if I am switching guitars or re-tuning. Band mates have remarked how much better it makes the shows run. It works great!
But, when I have fly gigs and can't bring my rack with me, I use the FM3 and only take two guitars, because of the cost of cartage and airplane luggage.
In this case, I would not only use the VC on the 2-3 songs I normally do, I would like to use it for another 4-5 songs to prevent re-tuning, with less guitars.

So you can see how useful a good VC might be in this situation, when you can't bring the Axe3 or all your guitars, but you still have to play the same 2-hour show.

I love Fractal equipment, and own a lot of it. I appreciate all of their hard work, and I appreciate that they tried to update the VC. If it can't be done, I accept that is the reality. But for my situation, a usable VC is more important than adding new amp or new drive pedal. I already have a ton of those.

I also understand that it may be different for other people, and hope that they get all of their needs met, too.

This post is really not meant to start another argument, so I hope no one takes it that way. Because, for me, it isn't an argument. I'm just stating what works for my situation, and hoping it helps other forum members appreciate why it is important to me, and maybe some others.
Exactly. Prior to using the Variax and the VC, my band played everything in half-step down tuning. I hated it except for the songs natively recorded like that; to me, a song sounds weird if tuned only slightly different from the recording that I've grown up with. I think if it's a 4th or a 5th off, it's more tolerable since it's different enough that I'm not bothered by it. But if it's a half-step off, something in my brain is like, "Hmm. Something's wrong here..." I don't have perfect pitch or anything, but I think any of us can recognize when a song we've loved and listened to for decades is different. Like, if someone started playing Don't Stop Believin' or Carry On Wayward Son in a different key, we'd know something was off. My 2c, anyway :D
 
Thanks J! Coming from someone who doesn't gig much anymore, I may have overlooked the quickness and ease of use of the VC for a live band. I have used the VC mainly to play along with tracks tuned down (usually only a half or a whole step) and while I could tell it was on, I had fun playing along to the song so who cares?

If I were in a cover band I would most likely use it more often, as I can see the hassle of bringing two or three guitars to the gig only to use the two extras for three song the whole night. It just doesn't make logistical sense. It's an effective tool and honestly, it's better than no VC at all.

Just a thought too... Look at VC more as an inspirational tool. I definitely play differently on a guitar tuned down than in standard.


Ugly Bunny, I notice that too. When playing a song down a half step it definitely sounds weird and not "normal". However, I think it sounds the worst when it's the actual band tuning down love. I saw Jane's Addiction and they were down a whole step. Everything just sounded "down" as if they took the recording and lowered the pitch but not the speed.
 
You're right, it's almost impossible to manually compensate for latency and have the take still feel good. Plus, this takes away the ability to play ahead of or behind the click giving the song a certain feel.

Ive always imagined my takes as someone coloring in a coloring book...my takes are like staying in the lines - staying on time, clean lead in and clean lead out of the take. Makes mixing and cleaning tracks up much easier and faster and it makes me be more precise and think about what I'm playing and how it fits with the rest of the music.
 
Just a thought too... Look at VC more as an inspirational tool. I definitely play differently on a guitar tuned down than in standard.
Totally; I had it pitched down 5 half steps to simulate a 7-string guitar. It sounds fantastic, but it also creates some interesting sounds when I play an open D chord, for instance; it's basically an open A (using the CAGED method), but in the D position. It's inspirational to have an A in that position and other things I can do with the higher strings when the overall sound is down 5 half steps. And with the low latency, it's now possible to play like that and not feel like you're running through sand (or like when you try to really sprint in a dream lol) :)
 
The first rule of life: don’t make any decisions based on anything I say or do 😅
I just bought that B stock FM3 after reading through this. I have a new gig and 1/3 of the set is going to be Eb, 5 songs are F standard (CAPO1) not to mention some Drop D (or Drop C# in Eb).
I've been testing all day with Helix Native Poly Capo and realized I CAN use this and it is going to be SO MUCH better than multiple guitars, CAPOS, maintaining an Eb guitar.
I tried some light gain (Timmy, a real one) on the clean stuff and that helps.
But Native itself has some latency with my audio interface PLUS the Poly Capo and other stuff in the chain.
I'm expecting the FM3 to be as good, probably MUCH better.
In short, I'm back in the Fractal game... but at least I finally have a real, working, gigging reason to re-buy the FM3 LOL.
 
I just bought that B stock FM3 after reading through this. I have a new gig and 1/3 of the set is going to be Eb, 5 songs are F standard (CAPO1) not to mention some Drop D (or Drop C# in Eb).
I've been testing all day with Helix Native Poly Capo and realized I CAN use this and it is going to be SO MUCH better than multiple guitars, CAPOS, maintaining an Eb guitar.
I tried some light gain (Timmy, a real one) on the clean stuff and that helps.
But Native itself has some latency with my audio interface PLUS the Poly Capo and other stuff in the chain.
I'm expecting the FM3 to be as good, probably MUCH better.
In short, I'm back in the Fractal game... but at least I finally have a real, working, gigging reason to re-buy the FM3 LOL.
Are you the one on TGP that has that new gig where you need all the crazy tunings? I’m stoked you gave this another shot. It is quite remarkable now. I even made a faux bass preset. And it sounds good; not as good as playing a real bass, but using the B7K into a 4x10 cab sounds great. Tool bass tones for days using a 6-string guitar ☺️
 
Was screwing around with this earlier today. Dropped a whole step. It does seem less laggy, less artifacts.
Yeah, the latency used to be fairly distracting. Overall I find it quite satisfying now. I’d be perfectly happy even if it never got better than it is now.
 
Currently, the Helix poly capo is better than what has been ported to the FM3 in my experience. That being said, for Eb it is useable for gigging.
 
Currently, the Helix poly capo is better than what has been ported to the FM3 in my experience. That being said, for Eb it is useable for gigging.
You still think so, even after 5.0? Whether or not you believe it to be better, the Helix's poly capo, for all its good, sill takes up literally half the DSP of a chip - so on a Stomp you can't really have much else; MAYBE you'll fit and amp/cab or amp +IR, whereas on the FM3, the Virtual Capo takes up around 7% of the DSP; meaning, you can throw the Virtual Capo in just about any preset you want it. The pitch block itself takes up about 12% DSP until you change the type to VC, then it goes down.

Personally, I still think it's better, although the measured latency of both is identical now. I guess having only used the Helix's Poly Capo so far with Helix sounds has turned me off to it, even if the Poly Capo itself is actually better (I don't think it is, especially now). But it's like having a better AC in a crappier car, as far as I'm concerned, even if it were better, and by using that AC, it cut your gas mileage in half.

I take my Helix out every now and again to try to get a good sound, but usually within 15 minutes, it's put away again and I'm back with my Axe Fx or NDSP plugins.

Anyway, this isn't about that. But I appreciate your contribution even though I disagree. Cheers! :D
 
You still think so, even after 5.0? Whether or not you believe it to be better, the Helix's poly capo, for all its good, sill takes up literally half the DSP of a chip - so on a Stomp you can't really have much else; MAYBE you'll fit and amp/cab or amp +IR, whereas on the FM3, the Virtual Capo takes up around 7% of the DSP; meaning, you can throw the Virtual Capo in just about any preset you want it. The pitch block itself takes up about 12% DSP until you change the type to VC, then it goes down.

Personally, I still think it's better, although the measured latency of both is identical now. I guess having only used the Helix's Poly Capo so far with Helix sounds has turned me off to it, even if the Poly Capo itself is actually better (I don't think it is, especially now). But it's like having a better AC in a crappier car, as far as I'm concerned, even if it were better, and by using that AC, it cut your gas mileage in half.

I take my Helix out every now and again to try to get a good sound, but usually within 15 minutes, it's put away again and I'm back with my Axe Fx or NDSP plugins.

Anyway, this isn't about that. But I appreciate your contribution even though I disagree. Cheers! :D
I didn’t imply that the helix is an overall better unit (IMO it isn’t) or that it’s capo is comparable cpu wise. This is also not a complaint about latency as that tends to come with the territory. All I’m saying is that when I used the capo feature on the helix stomp (which absolutely stole most of the cpu when engaged) it was more stable sonically than the VC in the FM3 currently is. Even with FW 5b. I hope they can figure something out for it down the road.

Also, if you are happy with it, that’s fantastic. I would like to get where you are, and I believe it could possibly improve with time. I’m not mad about it either. I think it’s perfectly useable for my main purpose which is Eb tuning for a few songs and I didn’t buy the FM3 expecting it would be capable of replacing a drop pedal or using a capo But I think it’s okay to think there is still room for improvement.
 
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I didn’t imply that the helix is an overall better unit (IMO it isn’t) or that it’s capo is comparable cpu wise. This is also not a complaint about latency as that tends to come with the territory. All I’m saying is that when I used the capo feature on the helix stomp (which absolutely stole most of the cpu when engaged) it was more stable sonically than the VC in the FM3 currently is. Even with FW 5b. I hope they can figure something out for it down the road.

Also, if you are happy with it, that’s fantastic. I would like to get where you are, and I believe it could possibly improve with time. I’m not mad about it either. I think it’s perfectly useable for my main purpose which is Eb tuning for a few songs and I didn’t buy the FM3 expecting it would be capable of replacing a drop pedal or using a capo But I think it’s okay to think there is still room for improvement.
Nah, it's cool; I get ya. I was just asking if you'd tried the 5.0 version of it. Because I completely agree that it was not very satisfying before, but now you answered, so I appreciate your view :)
 
I wish they'd really work on the pitch shifting.. alot of people say they don't use it but a better pitch shift would make for better crystals, better Plex delays,ect.
 
"I didn’t buy the FM3 expecting it would be capable of replacing a drop pedal or using a capo" -- I "partially" did this time around :(
But honestly, what I need to do for my new band is cover a LOT and alt tunings is just a piece of the puzzle. I had rehearsal last night and brought two guitar, E standard and Eb standard and I could have EASILY handled the Eb with a Drop pedal (which I have incoming for my traditional board OR the FM3 which is also incoming.
I mean, I'm testing Poly Capo from Helix Native at low volume where I can still absolutely hear my guitar strings and the flat tone coming out of the speakers, once I play along with songs I need to learn with the band I'm perfectly fine. This includes latency from the Poly Capo AND from my audio interface / DAW. I really feel like I'm going to be fine going this route. I wonder if many people have completely unrealistic expectations?
I mean, we are already booked solid for the year in this new project.
If someone comes online and says the FM9 virtual capo completely and utterly spanks the FM3 in version 5.x beta then I guess I would consider.
 
If someone comes online and says the FM9 virtual capo completely and utterly spanks the FM3 in version 5.x beta then I guess I would consider.
It doesn't; remember, I have the Axe Fx III as well (same pitch algorithm as the FM9). To my ear, they are identical. By my tests, the latency is identical. Of course, the downside of my objective measurements is that it doesn't/can't measure artifacts and I only tested it with the VC dropped a half step. That said, though, my subjective opinion is that they are equally as good.

In any case, yeah, I've read a lot of people saying the Helix's poly stuff is good. My tests show the latency is good, but I just don't like Helix tone, I've realized, and that, combined with the fact the Poly Capo takes up literally half of the Stomp's horsepower makes it a drag. I can either use it for the tone or use it for the Poly Capo, not both. Frankly, even if it's as good as the FM3's (is now), it's definitely not better by any stretch of the imagination, and it's not worth lugging it around and powering it and routing signal to/from it.

I really like the fact that the Virtual Capo only takes up about 7% DSP. You really can throw it in just about any preset if you need to.

But yeah, it's a drag to be able to hear your strings acoustically when processing them through a pitch shifter. It's brain-ouchies for me, for sure lol!
 
"I didn’t buy the FM3 expecting it would be capable of replacing a drop pedal or using a capo" -- I "partially" did this time around :(
But honestly, what I need to do for my new band is cover a LOT and alt tunings is just a piece of the puzzle. I had rehearsal last night and brought two guitar, E standard and Eb standard and I could have EASILY handled the Eb with a Drop pedal (which I have incoming for my traditional board OR the FM3 which is also incoming.
I mean, I'm testing Poly Capo from Helix Native at low volume where I can still absolutely hear my guitar strings and the flat tone coming out of the speakers, once I play along with songs I need to learn with the band I'm perfectly fine. This includes latency from the Poly Capo AND from my audio interface / DAW. I really feel like I'm going to be fine going this route. I wonder if many people have completely unrealistic expectations?
I mean, we are already booked solid for the year in this new project.
If someone comes online and says the FM9 virtual capo completely and utterly spanks the FM3 in version 5.x beta then I guess I would consider.
Go get yourself a variax haha. Variax + FM9 is a killer combo. Variax + Helix is insanely customizable. You could have so much fun
 
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