Peterson Strobe Center 5000-II - Manual (Page 16)

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very different. This may be the reason why music from that era was based mostly on octaves, fifths, and fourths and for
which this tuning is said to sound extremely good.
JUMA - JUST INTONATION (MAJOR PITCH) was created after musicians discovered the sweet richness of the
perfectly aligned harmonic partial tones in the major third whole-number frequency-ratio of 5/4. The tuning uses as many
whole number ratio perfect fifths, perfect major thirds, and perfect minor thirds as possible. It sets a scale with 6 perfect
major triads and 6 perfect minor triads, while the other 12 musical keys are essentially unusable "wolves". "White" note
major keys, with more key signature sharps than flats, and their relative minors are more favored by Just Intonation in Major
Pitch.
MEAN - (1/4 COMMA) MEAN-TONE is a temperament used to increase the number of usable keys beyond the twelve
permissible with either just intonation tuning described above, while retaining the purity of the 5/4 whole-number ratios for
the major thirds as much as possible. This temperament creates eight perfect major thirds, with sixteen favorable good keys
and eight "wolves". The fifths are all tempered slightly more narrow than in equal temperament.
WRK3 - WERCKMEISTER III is classified under the category of a "well temperament". Tunings in a "well
temperament" allow performance of music in any key. Although some keys sound more favorably close to pure whole
number ratio tuning and some keys are more roughly in tune, there are no completely unacceptable "wolf" keys in a "well
temperament" tuning. There is a sense of key "color" because the keys with a more favorable tuning are described by some
scholars as having a peaceful, restful quality; while those more roughly in tune are characterized as being more active and
brilliant in their timbre. Werckmeister III sets most of the major thirds slightly wide, and is a useful method for "well
temperament" tuning. It should be used with the warning that one major third (A= - C) is much too wide and sounds very
out of tune. Keys with few sharps or flats are favored, with C major and A minor being the best. Those keys with many
sharps or flats produce a rougher tonality.
KRN3 - KIRNBERGER III is another "well temperament" which uses five tempered (narrowed) fifths, the perfect major
third of C - E, and a sequence of seven perfect fifths. All keys are usable, yet due to the basis on tempered and perfect fifths,
there are only a few good intervals of major or minor thirds. Kirnberger III sounds much different than the equal
temperament to which our ears are accustomed. It is probably best for music from the late eighteenth century.
YONG - THOMAS YOUNG's temperament is a "well temperament" identical to one discovered by Francescantonio
Vallotti. The scale tempers six fifths by narrowing them, while six fifths retain the pure ratio of 3/2. Young started the
tuning with the note C, while Vallotti began with the note F. The favorable and less favorable keys get shifted slightly when
one modulates from C to F. Of the seven preprogrammed non-equal temperaments available in the tuner, the Young
temperament is the closest to Equal Temperament, with some differentiation of color in the various musical keys. Young's
choice of starting on C seems to slightly favor some of the more commonly encountered historic keys over starting on F.
KLNR - KELLNER is another “well-tempered” scale believed to be that employed by J. S. Bach for “The Well-Tempered
Clavier”. It is built on the concept of producing equal beat rates in the major third and fifth intervals built on the C key root.
It has become an extremely popular temperament because of its excellent balance of tone color among a wide range of keys
with minimal “wolf” intervals (only three Pythagorean thirds at Ab, F#, and C#).
f. Returning to our previous section about selecting a preprogrammed temperament, you have made your choice by
moving the cursor to the desired temperament and then pressing the #4 function key (SLCT) to select the
temperament. The tuner has modified the operating parameters buffer to the new Temperament values and returned
you to the Run Mode screen. The display indicates the temperament you have chosen, and also shows Enhanced
Resolution of the tuner: