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### What is the "simple frequency ratio" theory? [duplicate]

What is the "simple frequency ratio" theory of consonance and dissonance? Why is it called a theory?
325 views

### Calculating consonance/dissonance (i.e. need for resolution) from list of frequencies [duplicate]

Is anyone aware of any formulas that can be used to calculate consonance or dissonance from a list of frequencies (in hertz)? I realize consonance/dissonance is a somewhat nebulous concept. What I ...
139 views

### Can you measure consonance of intervals played by sine waves? [duplicate]

Is there a way to measure consonance of intervals that are played by pure sine waves? I am looking for a list that shows the order of consonance between intervals of sine waves with no overtones. Also,...
86 views

### Computational Technique to Predict Two-Note Dissonance? [duplicate]

Many of us are taught that the "complexity" of the ratio between two frequencies predicts its dissonant qualities. Is there a way to find a numerical value for dissonance? I have created a ...
1 vote
48 views

### Is there a way to define dissonance such that it can be quantifiable? [duplicate]

We can perceive dissonance between notes, but are is there a mathematical way to measure the relationship between two notes as more or less dissonant? Context: I'm doing an experiment with sets of ...
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77k views

### Why are there twelve notes in an octave?

I know that one scale consists of 12 half-tones. But my question is still: Why? Why not 13 or 11?
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### Are there any great open questions in music theory/psychoacoustics?

In many sciences there a are a number open questions that are well known in the field, and for which a solid answer would gain the answerer much Prestige. For example, maths has many open questions, ...
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### What is a chord in terms of frequencies?

I'm trying to understand what chords are in terms of frequency. So I get that each note represents a frequency range. For instance, an "A" note in the third octave (A2) is ~110hz. An A major chord (...
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### What is the list of intervals in order of dissonance

I understand that some intervals are considered dissonant (minor second) and some intervals are consonant (perfect fourths). However whenever I see intervals listed, they are always listed from ...
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### How to create harmonic dissonance/tension?

If I'm playing in a major scale, would a harmonic dissonance be caused by going to the minor side of the chords (ii, iii, vi) or would it be created from going outside my scale? And if it's going ...
1k views

### Dissonance across different octaves

When I play to keys that form a dissonant interval (for example a major second using C and D) in the lower octave, I perceive the dissonance to be very strong. But, when I move up to higher C's and D'...
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### Why do some intervals sound better than others?

Why do some intervals sound so good (e.g. a perfect fifth: seven semitones), whereas others sound so awful and diabolical (e.g. an augmented fourth: six semitones)? Is this phenomenon dependant on ...
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### Proper understanding of dissonance

I have recently had a big eye opener with one of my guitar pieces in how it uses dissonance in a musical way to make interesting music. I have always thought that for music to be dissonant is for it ...
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### Difference between perfect 4th and perfect 5th

I've recently been learning about interval ratios and about why some intervals are more consonant or dissonant than others. I was trying to find out about the order of intervals by consonance/...