Author Topic: minor vs dim confusion?  (Read 236 times)

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Offline squaleca

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minor vs dim confusion?
« on: October 24, 2021, 03:33:49 pm »
 so C to Gb is a dim5 but not a minor 5
so then why is C to Ab a minor 6th and not also a dim6?

Offline close2u

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Re: minor vs dim confusion?
« Reply #1 on: October 24, 2021, 07:13:11 pm »
Hi squaleca

It all depends on the interval tha tyou are comparing with.

For augmented intervals there is just one rule. When an interval is bigger than a Major or Perfect interval, it is simply called 'Augmented'.
That's it.

There are two rules when considering intervals that are smaller than Major or Perfect intervals.
Perfect Intervals become 'Diminished'.
Major Intervals become 'Minor'.
If a Minor Interval is smaller, it also becomes 'Diminished'.

The Perfect intervals are 4ths and 5ths.
C to G is a 5th.
Hence C to Gb is a diminished 5th - a Perfect interval made smaller.

6th are Major intervals.
C to A is a 6th.
Hence C to Ab is a minor 6th - a Major interval made smaller.

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