456. MENU Buttons6.3 Common ParametersThe following common parameters affect all Zones.6.3.1 Stretch TuningThe hearing ability of a human is uneven and is not accurate with high frequencyand low frequency as it is with the middle range. The tuning of an acoustic pianois stretched to compensate for this so the sound will be heard naturally to theears.Off: The tuning is flat without stretching.On: The tuning is always stretched.Piano: The tuning is stretched only when piano sounds are selected.On W: Same as “On” but the stretching is wider.Piano W: Same as “Piano” but the stretching is wider.6.3.2 TemperamentThis parameter sets the temperament of the MP6.Equal This is the most popular tuning method that divides the scale intotwelve equal semitones. This produces the same chordal intervalsin all twelve keys, and has the advantage of limitless modulation ofthe key. However the tonality of each key becomes less characteristicand no chord is in pure consonance.Pure Maj/Min This temperament, which eliminates dissonances for thirds andfifths is still popular for choral music because of its perfect harmony.When playing in a major key select “Pure Maj” and when playing ina minor key select “Pure Min”.Pythagor This temperament, which uses mathematical ratios to eliminatedissonance for fifths, is very limited for use with chords, but itproduces very characteristic melodic lines.Meantone This temperament, which uses a mean between a major and minorwhole tone to eliminate dissonance for thirds, was devised toeliminate the lack of consonances experienced with certain fifthsfor the Mersenne pure temperament. It produces chords that aremore beautiful than those with the equal temperament.Werkmeis /KirnbergThese two temperaments are placed in between Meantone andPythagorean. For music with few accidentals, this temperamentproduces the beautiful chords of the mean tone, but as accidentalsincrease, the temperament produces the characteristic melodies ofthe Pythagorean temperament. It is used primarily for classical musicwritten in the Baroque era to revive the original characteristics.User You can make your own temperament by raising or lowering thepitch for each half tone.COMMONSStrtch= Piano_wCOMMONSStrtch= Piano_wCOMMONSTempr =Pure MajCOMMONSTempr =Pure Maj