Moreover, beyond the use at home, you will have to have a hexaphonic microphone by guitar if you want to change it in concert (for example if you break a string). As for using Reaper in concert, it is not a practical solution at all.
Finally, if Midi Guitar is not only a very successful polyphonic conversion solution, it is also a host plugin that allows you to play in audio and midi without the need for a daw, with direct access and controllable by midi controllers to legato, bend, aftertouch functions, different tuning options, and multiple Midi scripting slots (I frequently use these).
I forgot: a lifetime license is really a good investment. However I would be ready to pay for a next update because for me Midi Guitar is addictive and I could not do without it for my musical activity which is based on the exploitation of Midi instruments and effects with a guitar.
For my little one-man-show I have an acoustic guitar and a microphone, both connected to my iPhone SE. Using AUM, I process the guitar through Tonebridge (to add some nice FX), and route the guitar and/or mic to Group the Loop (GTL, for live looping).
Being an iOS app, this would be the easiest solution. It translates the acoustic signal of the guitar into MIDI. But it is not too accurate with an acoustic guitar (compared to an electric one). And it is a bit cumbersome to route its MIDI to an AUv3 synth in AUM: as MG2 itself cannot be loaded as an AUv3 input, I would need to have the app running in the background, which adds more manual complexity (and more sources for problems) to my already complex setup around AUM and GTL. On the other side, it has some nice presets and FX (but I doubt I can assign any MIDI bindings to them so I could switch between them using my iRig BlueBoard foot controller) (UPDATE: MG2 does allow to assign midi CC to select settings).
Being an additional kind-of-pickup (which can be simply clenched between the guitar's strings and its body, next to the bridge), the TPC (like MG2) also translates the acoustic signal of the guitar into MIDI, but it is much more accurate, as it has a single little pickup for each string (and doesn't have to "guess" as much as MG2). While it adds some more bulk, it's relatively tiny. And it can easily be installed and removed (without altering the guitar), so I could use it with different guitars.
It connects via USB. As I already use a Camera Connection Kit to attach my external audio interface to my iPhone, I can simply add a small USB hub to allow for another connection. It even draws its power from USB, so no additional battery to be charged.
The TPC comes with a great looking app, but sadly it's only available for iPad. As far as I can read from this article, it should be possible to connect the TPC also directly to any MIDI synth, but I'm unsure whether the TPC still is indispensable for fine-tuning the MIDI signals so they are accurate enough for live performance. I mean - if I want to have an "inaccurate" solution, I could get the cheaper MG2 (above).
An additional benefit is that each single string can be sent to its individual MIDI channel. This allows for some more magic when reacting to it, e.g. to trigger a bass synth for the E, A, and D strings, while triggering another synth for the G, B, and e strings.
As my guitar's internal pickup has some problems, the TP might be a solution for that too, as it claims to be also a "normal" pickup (or am I getting it wrong? At least I can switch between guitar, synth, and both using a switch) - but how would the acoustic sound come to iOS then?
As there is no need to connect this thing (neither for MIDI nor for acoustic, assuming I don't misunderstand something fundamental here) I could get rid of my external audio interface, too. This could make up for the additional bulkiness of the thing. On the other side, an additional battery needs to be charged here.
Similar to the TP, but no wireless. As such it is a bit bulkier, but also it makes clear that the MIDI and acoustic signals are transmitted through cables (as such there are no questions whether an additional iOS software is needed). Still, I don't know how this compares regarding accuracy. And it seems to be harder to install to a guitar and non-removable (seems to be fixed using screws or something), which is a huge downside, as I don't want to alter the body of my guitar. In general, it doesn't really seem to be made for acoustic guitars.
RMS seems to have several acoustic pickups with an "acoustic to MIDI" solution built right into it. I didn't go though the different options yet, I'm a bit confused here, but they look promising, while also being expensive.
If their MIDI accuracy is very good (much better than the Roland or Fishmans), they might be worth a shot. But installation is very complex and needs to be done by a professional. And it definitely requires to alter the body of my guitar.
At the moment, I favour the TPC, as it is very straightforward to install, doesn't do any damage to my guitar's body, should be pretty accurate even without the specific app (at least I hope for this), connects straight to the MIDI input in AUM without any additional software running (I guess), and doesn't need an additional power source as its connected through USB.
But also MG2 is still very tempting, as it would be the most hassle-free solution installation-wise. So my biggest question might be: Will the Fishman Triple Play (WiFi or Connect version) be more accurate than iOS Midi Guitar 2, even when I cannot use the "Connect" iOS app (as I don't have an iPad, only an iPhone)?
I've got a Roland GK-2a with my GI-10 and it's about as inaccurate as the iOS/macOS Midi Guitar app is. Neither is perfect. The Roland one is a lot older so I imagine they've been able to use alien technology and artificially intelligent algorithms in Midi Guitar that weren't available (or allowed to be) back then. I took my pickup off when I got Midi Guitar.
A friend who has owned every guitar-to-MIDI solution says the TriplePlay is the only decent hardware solution. MG2, he says is close in quality if you play cleanly. I use MG2 and find it excellent for single note playing and ok for 3-4 note chords though chordal playing requires some adjustments in how I
play.
It would be really interesting whether this is true for only electric guitars, or also for acoustic ones. To be honest, I just tried MG2 again using a piezo pickup and using a microphone, and both does not result in very accurate MIDI.
I suspect the TriplePlay would be much more accurate on an acoustic than MG2, because it has a hexaphonic pickup which allows way better separation of each string than the "mess" of only one single signal from a standard piezo.
I would test an acoustic with the tripleplay before making any assumptions. What you say would apply to electric guitar as well as to an acoustic with a pickup. My friend with the tripleplay says that while the tripleplay tracks a little better than MG2 that the difference is not huge (whereas he says the tripleplay is much better than the Roland).
@Intrepolicious has the tiger by the tail. I always open MG2 first and then send MIDI out to "Destination" in AUM. Every guitar is different in MG2--you have to spend some time tweaking the settings PER GUITAR. But once you dial it in, save it as a preset and you should be all set. I definitely have to play more cleanly with MG2 tracking me, but I don't perceive that as a downside. I should be playing more cleanly anyway.
@lukesleepwalker said:
@Intrepolicious has the tiger by the tail. I always open MG2 first and then send MIDI out to "Destination" in AUM. Every guitar is different in MG2--you have to spend some time tweaking the settings PER GUITAR. But once you dial it in, save it as a preset and you should be all set. I definitely have to play more cleanly with MG2 tracking me, but I don't perceive that as a downside. I should be playing more cleanly anyway.
It has been a bit of a completion / delivery debacle to say the least, but when I saw one of the acoustics with built in electronics on eBay cheap, my own curiosity got the better of me... Most of the complaints were about the quality of the bespoke guitars for the price and the poor performance of the app, I was more interested in the straight midi for synth app input.
Anyway, headline from that ramble is that the technology does actually work for guitar to midi (so long as you can get by without open string notes).... and Kickstarter discards are out there to be had cheap.
Playing an electric guitar through an amp modeler along with some hexaphonic processing (see SY-1000 below) would give you the most options, I think. But I doubt it's worth the expense for your use case.
I want to point out that the hexaphonic pickups like GK-3 are not merely for MIDI. They seem adequate for MIDI if properly installed and played with some finesse (roughly equivalent to Triple Play), but users of something like a Boss SY-1000 will process their hexaphonic inputs directly without passing through the error-prone, latency-increasing pitch-to-MIDI stage.
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