CS_TBL wrote:As long as the processes that create guitar sounds/noises can be scientifically explained, it can be recreated. You only have to know why something happens in order to recreate it. It's just that no-one has succeeded yet for the full 100%
I agree with you in theory. If we're talking physical modeling, there are a handful of technical hurdles to recreating a guitar sound, which I am confident could
be achieved; I've heard extremely convincing waveguide models of strings (specifically, I'm referring to a variation of the Karplus-Strong algorithm that takes into account "reflections" on either "side" of the excitation) which even faithfully reproduce harmonics and the varying tones of different picking positions (up to a point--the model craps out slightly when "picking" very near to the "bridge"); not sure off the top of my head whether that approach can mimic different gauges of string, but that's a relatively minor detail. I have yet to hear a good model of a bridge though--not a huge deal for individual notes, but for chords and especially for techniques like unison bends, there is significant physical interaction between strings whose absence would sound extremely artificial. The body needs to be modeled as well--for acoustic guitars, this means mimicking the depth of the body and resonant modes of the soundboard; this is less a concern for electric guitars, although the neck and body woods have a noticeable impact on the tone--this would be difficult, but I think not insurmountable--convolution is probably the most sensible solution, although I've heard resonators which get within the ballpark. Additionally, electric guitars (generally speaking) have relatively simple, but still nontrivial interactions between a number of passive components which would need to be recreated as well.
I think that this stuff could be modeled accurately (although practically speaking, I doubt that it will be--I'd love to be proven wrong though). The bigger issue would be in controlling this model--you'd essentially need to be able to control the pitch, tone, and dynamics of each "string"/voice (as well as a few other properties like strumming speed, various voicing controls in the case of an electric guitar model, etc) independently in real time; it may be a failure of imagination on my part, but it seems to me that would require a controller that's guitar-like enough that you might as well just learn to play guitar to begin with. Just my two cents.
To the OP-- I don't have much experience with sample sets (since I play guitar myself), but if you felt inclined to learn to play, you could get an inexpensive guitar and amp for a few hundred dollars--more or less the cost of a middle-of-the-road used synth--and you could probably get pretty conversant with basic rhythm stuff within 6 months to a year (fair warning, your fingertips will be en fuego
for the first couple of weeks
In any case, do a little research on guitar voicings, as that will go a long way towards making your stuff sound authentic. Guitarists use a ton
of inversions, widely spaced intervals, and frequently omit certain chord tones; basic 1-3-5 type voicings are actually pretty rare in guitar land.