What is the third audible but unplayed pitch called when you play 2 strings at the same time?
What is the English term for the effect that if you play 2 strings together there sounds a another lower note that can (or at least could be) heard allthough it is not played? Like if you play A and E together you can hear a third lower note in the backround.
Can't tell you what a musician calls it, but the physicist in me would say whenever you play two frequencies, you hear the sum and the difference.
Musicians often call them "Tartini" or "combination" tones. Physicists might call them heterodyne frequencies.
Yup - Tartini notes! Lots of fun to listen to....
Another term in use is 'difference' tones, for the reason that Andrew explained.
Modern radios used to be known as "Heterodyne sets", for reasons I could explain, but realise it's best not to, lol!
Thank you ver much, also for the explanation :)
Is this then always the case when we play double stops on the Violin?
So I tested with my violin and tuner.
Well, I read on this forum that you can hear them, and I didn't see any reason to disbelieve that (in fact, I've heard them regularly in other situations, just not while violin-playing). If you play a straight A, you won't hear any of its harmonics individually (e.g. the 440 base sinewave - you won't hear that) - they merge into one roughly triangular waveform.
Andrew, I mean that if I play A4 and E5 that is A and E strings together, my tuner reads A3 which is the note A played on the G string ( first finger on the G string). I checked many times this and it happens only when the A and E strings are tuned just right with open fifths. And it happens with both mine and my daughters violin. How strange.
Ah, E5, I wasn't thinking. You'll notice that I gave the frequency of E4.
Incidentally, the theremin works this way - two very high pitches, one fixed and one moving. You just hear the difference tone as the others are very high.
Tartini Tones sounds better than Murph and the Mellow Tones.
Andrew, that clears it :) thanks :)
It's actually an interesting concept to have your tuner "hear" the Tartini tones for you.
Yes-- how could the tuner hear a tone that is a sum/difference created in your ear? Anyway, I don't think the ear creates sounds at all. Like the eye does not created images...
The tuner is nonlinear electronics, so it mixes.
I tried with 2 tuners, and finally I can hear the thing. Its a fluctuating wave of the A3 pitch. But the thing is I can only hear it if the A and E are played very loudly with the tuners, so no wonder I cannot hear it with the violin, its just too week a voice for my ears to hear. And its not an especially nice sound either.
That's why we have cellos and basses, to mask it all.
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