Have you ever recorded a Theremin performance (of yourself or others) and then discovered that what sounded in tune when recording sounds out-of-tune on the playback?
Is this situation the "Florence Foster Jenkins" syndrome (that is, it really WAS bad) or are there technical and physiological factors at work?
One could rightfully assert that tuning is an objective, measurable matter: the pitch is either at the correct frequency or it isn't. And, this is true. In fact, if you play a note at the correct frequency you may fear not. As we all know, with a Theremin, it isn’t quite that easy. We play a note and correct the pitch by ear.
Back to the original premise: that a performance sounds in tune to the performer and sounds out-of-tune to the listeners (definitely not good) -- would it be possible to turn this around so that the performer can hear the inaccuracies and the audience can't? Well, if it works one way it can probably work the other.
The good news is that, assuming you can match pitches in the first place, you can utilize “mother nature” to put things in your favor.
~~ volume ~~
Pitch sensitivity decreases as the volume goes up. The softer that one sets a system’s output, the better the human ear can distinguish pitch. When laying down Theremin tracks in my studio, I monitor and play at excruciatingly SOFT volumes – if I had things set any softer the ambient noise in the room would mask the pitches! The most thunderous passages on my recordings were, none-the-less, recorded at low volume.
Recording situations can be more finicky than live – after all, a little “burble” will pass by the listeners barely noticed however, on a recording, people will listen repeatedly and start to pick up these little things.
In a live performance setting with loud volume levels, things can get a bit dicey. If the music is really loud your ears will mislead you however the audience is in the same boat and all is well. However – your recording will pick it up and when you later listen to the recording at a relatively low volume you may be in for a mild shock! There are other issues with recordings, too… read on…
My game plan in live performance is to play thru my basic sound system at a moderate volume. If a situation demands more sound, I will place the additional speakers such that they aren’t “blasting” me. I will admit, I don’t play real loud (i.e., heavy metal) so moderate levels should work ok.
The other issue with playing at loud volumes is ear fatigue – one can reach a point where one really can’t discern pitch without giving the ears a break.
~~ masking ~~
Masking is the technical term that refers to one sound covering up (masking) another. As a thereminist, you can use this to your advantage. When you play softly (like pppp) on your Theremin you want the Theremin’s sound to be masked from the listeners and NOT masked from you!
Clara Rockmore’s solution was pretty easy: she placed her speaker right behind her at ear level. When she first played a note she could make a quick pitch adjustment that she could hear but the listeners could not.
If you are playing through a house system you are at a disadvantage because you may not be the closest person to the speaker and all the other instruments are mixed in along with you. If you are center stage and the house speakers are off to the sides, you may hear primarily reflected sound while the listeners hear direct sound. When this happens, you will be correcting your pitches in public! This is the absolute worst situation because your initial pitch is masked from you and NOT from the listeners!
The ideal situation is to have the Theremin through its own speaker with nothing else mixed in with it. (Peter Pringle wrote that it isn’t the “ideal” way to play, it is the “only” way to play!) Bear in mind that if the Theremin speaker channel has other instruments mixed in