A musical ratio of 48:25. Same as Diminished Eighth.

In classical music from Western culture, a

The

See Also

In classical music from Western culture, a

**diminished octave**is an interval produced by narrowing a perfect octave by a chromatic semitone. As such, the two notes are denoted by the same letter but have different accidentals. For instance, the interval from C4 to C5 is a perfect octave, twelve semitones wide, and both the intervals from C4 to C5, and from C4 to C5 are**diminished octaves**, spanning eleven semitones. Being diminished, it is considered a dissonant interval.The

**diminished octave**is enharmonically equivalent to the major seventh. Wikipedia, Diminished OctaveSee Also

**B Flat 3rd Octave****C 1st Octave****D 2nd Octave****Diminished****diminished seventh****E Sharp 3rd Octave****Figure 1.8 - Electromagnetic Scale in Octaves****Figure 11.01 - Octave composed of Equal Thirds and Triads****Figure 12.11 - Russells Locked Potential Full Ten Octave Gamut****Figure 12.12 - Russells Multiple Octave Waves as Fibonacci Spirals****Figure 12.12 - Russells Multiple Octave Waves as Fibonacci Spirals - See Also****Figure 17.03 - Analysis of the Octave Gravity Bar****Figure 7B.10 - Russells Periodic Chart of the first four octaves of proto-matter****Figure 9.16 - Russells 1-4 Octaves of Matter as Integrated Light - The Universal Constant****Figure 9.17 - Russells Ten Octaves of Matter as Integrated Light - The Universal Constant****Interval****Law of Octave****Octave****Major Seventh****Minor Seventh****Octave Relationships****RULE OF THE OCTAVE****Scale of the Forces in Octaves****Seventh****The Russell Nine Octave Chart of the Elements****11.15 - Indig Numbers - Inert Gases and Octave Position****12.17 - Note about Octave Relationships in Russells System****12.18 - Multiple Octave Progression**