Muppet, on Jan 13 2008, 10:41 PM, said:
I'm an idiot and can't understand. Can you explain in idiot language?
Unfortunately, there is no easy two sentence way of describing this unless you already understand tuning temperaments (unless some 'clever clogs' out there can kindly assist!):
Peterson's proprietary GTR™ Sweetened Tuning™ is designed to improve the sound of musical intervals on guitar, especially 4ths and 5ths. By taking advantage of a few coincidences such as the preponderance of 4th and 5th intervals appearing in many chord positions, the particular E-A-D-G-B-E arrangement of standard guitar tuning (and also the half-step down or "dropped" tuning variation), and the less-than-perfect overtones of vibrating strings, Peterson has introduced a number of slight variations which can maximize the tuning quality of chords.
These guitar-specific Sweeteners™, including G5TH and P5TH in the AutoStrobe™ 490-ST, and GTR in the Virtual Strobe™ series, improve tuning in general but are especially important for "power chords" which feature 4th and 5th intervals. To gain maximum benefit from this feature, the guitar should be intonated (string lengths adjusted) using the strobe tuner in Equal preset, and tuned thereafter using the Guitar (GTR) temperament preset.
Traditional temperaments generally apply to instruments like the piano or organ, where every note can be separately tuned.
What about a guitar, where the frets and intonation are usually set up for equal temperament?
It turns out that significant improvements can be achieved if you set the tuning precisely enough. Peterson's proprietary GTR temperament (one of Peterson's many Sweetened Tunings™) is designed to improve the sound of musical intervals on standard and "drop tuned" guitars (EADGBE or one half-step below these), especially the 4th and 5th intervals. This improvement is most noticeable when playing in overdriven mode, where the guitar’s resulting accentuated overtones normally clash when tuned in "standard" equal temperament. The GTR temperament makes discrete adjustments to equal temperament, which has a positive effect on the overall sound.
And you really need to understand how notes on a scale are spaced and behave to understand the positive benefits of Peterson's Sweetened Tunings:
It is perhaps a cruel joke on all of us to be given such remarkable sensitivity in judging musical pitch intervals between simultaneous sounds. The mathematics of positioning (tempering) 12 scale notes in an octave prevents any more than a handful of perfectly harmonious chords for any one tuning of those notes (temperament). We have limited options:
1. We can equally space the 12 notes in the octaves so that chords of each given type (major, minor, b5#7-9, etc.) sound equally good in all keys. This is called equal temperament, the common "standard" in modern music. Unfortunately, this temperament scheme also guarantees that all chords of a given type sound equally bad! Not even one chord will have intervals that sound exactly in tune!
2. We can purposely shift certain scale notes closer to or farther from their neighbors to make perfect intervals or chords in some places. If we choose wisely, we can make the most important chords in a given key be the perfect ones. This is the concept behind Just Intonation (JST in the Temperament Menu of Peterson tuners). In the key of C, the chords of C major, F major, and G major can each have perfectly harmonious tuning intervals. Unfortunately, other chords, especially those in more remote keys like C# and F#, sound much worse than they would in equal temperament. If an instrument like a piano is tuned in Just Major temperament for the key of C, notes and chords that fall in the C Major scale sound wonderful. Modulating to the key of G, most chords sound good, some not quite as good. If one takes a more adventurous trek into the key of E, say, some real "ear-sores" start to develop in certain chords and intervals. Historically, the clinkers are dubbed "wolf tones" which gives some indication of their "charm".
3. Between the extremes given above, there are countless compromises. Why not settle for some nearly perfect chords in the most popular key signatures, while keeping the "wolves" at bay in the less traveled ones? There are about as many such "well tempered" scales as there have been minds conceiving of them. Every temperament generally takes the name of its earliest inventor or biggest proponent. Some of the more successful ones, like Werkmeister (WRK), Young (YNG), Kirnberger (KRN), and Kellner (KLN), are included in current models of Peterson tuners. Besides stock historic temperaments, Peterson Virtual Strobe™ Tuners also feature unique instrument-specific temperaments such as GTR™ for guitar, BAS for bass, and (VS-II/V-SAM™ only) E9 & C6 tempered tuning for pedal steel guitar. The VS-S StroboStomp™ pedal tuner/DI also features four optimized Buzz Feiten Tuning System® presets for electric guitar, acoustic guitar, bass guitar and 12-string guitar. All Peterson tuners (except the VS-1) are user- programmable, allowing the saving of up to 244 user temperaments to memory. The V-SAM allows you to adjust any temperament to any one of 12 roots, making these temperaments available in any specific key.
I do hope this helps.
PS Sweetened Tunings in short get the very best out of your instrument
Edited by SMART, 13 January 2008 - 11:15 PM.