oddball frequencies
A cylindrical closed end flute, which would be one tube of a panflute, will have the same number of beats going in as going out, because the closed end is a node, or point of no vibration. So the frequencies of the main note and all the harmonics will be even numbered. I don't know which harmonics are 'combed out' of the note, but panflute does have a unique sound.
As for 'oddball' frequencies, they will change the sound of a note, as organ settings use 'off key' background frequencies to give a particular sound, like a diapason, which adds a note an octave above the main note, or tonic. But the 'oddball' freq is not always a harmonic.
I think the original question must relate to oddball freqs. If you heard such a thing you would know it. You might experiment with getting rid of it. One fix, as yet untried, might be : use a harmonizer to negate the offending background freq.
This has equal promise to mess things up even more, but could provide a new neat sound you might want.
Best fix is to tune the instrument producing the oddball frequency. Double strings on a 12 string need to be exactly in tune, or else a third 'interference' beat occurs. This might not be significant in one pair, but combine 6 pairs and alot of unwanted vibrations occur. Or maybe you might want them, too.
A good way to recognize 'in tune' vs. out of tune is to tune a piano. Three strings can sound in unison, but when you get all 3 exactly in unison, the sudden clearness is remarkable. The harmonic overtones line up exactly, too.
A cylindrical closed end flute, which would be one tube of a panflute, will have the same number of beats going in as going out, because the closed end is a node, or point of no vibration. So the frequencies of the main note and all the harmonics will be even numbered. I don't know which harmonics are 'combed out' of the note, but panflute does have a unique sound.
As for 'oddball' frequencies, they will change the sound of a note, as organ settings use 'off key' background frequencies to give a particular sound, like a diapason, which adds a note an octave above the main note, or tonic. But the 'oddball' freq is not always a harmonic.
I think the original question must relate to oddball freqs. If you heard such a thing you would know it. You might experiment with getting rid of it. One fix, as yet untried, might be : use a harmonizer to negate the offending background freq.
This has equal promise to mess things up even more, but could provide a new neat sound you might want.
Best fix is to tune the instrument producing the oddball frequency. Double strings on a 12 string need to be exactly in tune, or else a third 'interference' beat occurs. This might not be significant in one pair, but combine 6 pairs and alot of unwanted vibrations occur. Or maybe you might want them, too.
A good way to recognize 'in tune' vs. out of tune is to tune a piano. Three strings can sound in unison, but when you get all 3 exactly in unison, the sudden clearness is remarkable. The harmonic overtones line up exactly, too.
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