Comment on Let me just tune up real quick
Or you can just use harmonics.
I think that would make a standing wave with a series of nodes/antinodes on the string, and how well it works would strongly depend on where the tuning fork is along the string. This has the potential to be more interesting but it’s not as easy.
So the 12th fret is 1 octave up, 5th is 2 octaves, and just past the second fret is 3 octaves.
the 12th fret is 1 octave up
Yup. 12 semitones is 1 octave so A2 on the bass guitar’s A string. The frequency ratio to A1 is 2:1.
5th is 2 octaves
What? No. That’s 5 semitones or 500 cents from A1, which is D2, close to a perfect fourth from A1 (frequency ratio 4:3 or 498 cents).
Two octaves would be 24 semitones or 24 frets (not available on most fretted instruments) for a frequency ratio of 4:1, or A3.
just past the second fret is 3 octaves
No! The 2nd fret is 2 semitones or 200 cents above A1, which is B1, close to a major second from A1 (frequency ratio 9:8 or 196 cents).
3 octaves would be 36 semitones or 3600 cents for a frequency ratio of 8:1, or A4.
Sorry I mean that’s where the harmonics are.
ChaoticNeutralCzech@feddit.org 2 months ago
I think that would make a standing wave with a series of nodes/antinodes on the string, and how well it works would strongly depend on where the tuning fork is along the string. This has the potential to be more interesting but it’s not as easy.
Frozengyro@lemmy.world 2 months ago
So the 12th fret is 1 octave up, 5th is 2 octaves, and just past the second fret is 3 octaves.
ChaoticNeutralCzech@feddit.org 2 months ago
Yup. 12 semitones is 1 octave so A2 on the bass guitar’s A string. The frequency ratio to A1 is 2:1.
What? No. That’s 5 semitones or 500 cents from A1, which is D2, close to a perfect fourth from A1 (frequency ratio 4:3 or 498 cents).
Two octaves would be 24 semitones or 24 frets (not available on most fretted instruments) for a frequency ratio of 4:1, or A3.
No! The 2nd fret is 2 semitones or 200 cents above A1, which is B1, close to a major second from A1 (frequency ratio 9:8 or 196 cents).
3 octaves would be 36 semitones or 3600 cents for a frequency ratio of 8:1, or A4.
Frozengyro@lemmy.world 2 months ago
Sorry I mean that’s where the harmonics are.