Can a note be heard in wrong pitch?
Just like Optical illusion happens to our eyes, can this happen to our ears?
Consider a well tuned piano. Can we make hearing illusion with music? I show an example with steps:
Play a note (or specially chord) on high octaves
Play a note or chord on lower octaves than previous one (in general)
A second chord be heard like it have more pitch than previous chord. (but in general first chord was on higher octaves.)
When I said "in general", it means not all notes have to be lower or higher than other chord. Also two chords should not be too far from each other. I think only 1 or 2 octaves at most.
I feel like I heard it before like in Rachmaninoff Prelude Number 5 or Beethoven piano sonata no 32, first movement but I'm not sure if that's true or not.
Note that this kind of illusion happens to me not because of just playing two chords. I think the music makes the meaning and changes everything and it depends on sentences that were played moments ago. I think that's how it feels.
Looking at this line from Prelude Number 5 of Rachmaninoff.
As you can see the red parts have generally higher notes but when you play it, it seems that blue parts have higher pitch.
Also another kind of illusion (I wrote this part just to show the case):
I don't know what the word is to describe those blocks so I highlighted them in box.
After hearing blue boxes, the last note in red box (G3 I think) is like G4. Not a problem with pitch but because you heard G4 just a moment ago then G3 feels have the same meaning. But I think that's different from Rachmaninoff example.
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Absolutely! Shepard-Risset tones sound as if they are continuously rising or falling; this is done by continously changing the overtone content of the sounds such that when the central perceived pitch has gone up or down an octave, the same tone an octave below (for ascending) or above (for descending)has faded in, and the same tone an octave above has faded out (for ascending) or in (for descending).
It is a very peculiar sensation to listen to a sound appear to descend for several minutes and still "feel" to be in the same octave. (I believe this is what Carl Witthoft was thinking of.)
Communicating in a language that is not your own can be very frustrating!
The answer is yes, and they are called combination tones
Some examples here
when certain pitches are tuned to just intonation (simple integer rations) they can interact and produce other simple ratio notes, ending up with chords that sound like they have more notes in than you are playing. I think this interaction is one of the reasons tambura and other drone instruments can sound so full
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