How do I identify music intervals as constant, open or dissonant?
My midterms for music theory are tomorrow and I got just about everything down but I'm confused by this. Also, how do I know if it is small, medium or large? Thanks and sorry I'll try to make this my last question for a while
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In the following table are for the most popular pure dyads up to the octave - the frequency ratio is the measure of consonance and the sound sensation of most people.
Dyads.................Frequency ratio...Sensation of sound
minor second...16:15...dissonant
major second....9:8.......dissonant.…
minor third..........6:5.......consonant ("minor")
major third..........5:4.......consonant ("major")
forth.....................4:3…....consonant
tritonus................45:32...very dissonant
fifth.......................3:2…....very consonant ("neutral")
minor sixth..........8:5…..consonant ("minor")
major sixth..........5:3…..consonant ("major")
minor seventh....16:9…dissonant
major seventh....15:8…dissonant
octave..................2:1........very consonant ("neutral")
Cheers ebs