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| Peterson iStroboSoft on iPod Touch |
Tuning is an important topic for musicians. The lucky ones worry about setting the pitch of one note and hopefully the instrument takes care of the rest of it. Stringed instruments such as the violin and viola are only slightly more challenging. I am over-simplifying: while the instrument itself may be in tune, the inadequate player may play it out of tune. We all know that flutes and clarinets can be played horribly out of tune! So, maybe they aren't so lucky.
If you are dealing with an instrument with multiple fixed pitches, such as a keyboard instrument, harp, guitar or lute, tuning can become an obsession. One would think that you could have a set of tuning forks, one for each note, and all would be well. It's not that easy, as you will see, because a note isn't a note, but rather a collection of frequencies.
If you are simply a listener, tuning is something you either take for granted or complain about when it's not right. I think it is worth understanding some of the challenges, even for the listener.
Electronic tuners have been a big boon to musicians. We used to carry around tuning forks. While die-hards may still do so, most tuning forks were no more accurate and are more awkward to use than an electronic tuner. I have heard many complain that electronic tuners have been a bad influence on the current generations of musicians, that as a result, musicians are no longer listening as they were forced to in the past. I'm a cynic. I don't think the lazy are any more lazy as a result of electronic tuners: they blissfully played badly tuned instruments regardless of available technology.
However, it is easy to be too trusting about what an electronic tuner will do for you. There is an inherent challenge: any given note is actually a combination of frequencies, referred to as
overtones or
partials. The mixture of these paritals and their relative intensities have a lot to do with the character of the sound, not to mention its tuning. If you consider only one partial (usually the fundamental) in tuning, you aren't going to really be in tune.
It has been a couple of years since I have written about electronic tuners;
Too Many Tuners provides my 2009 perspective. My challenge has been that the only tuner met all of my needs was my Verituner 100, a nearly 4 pound monstrosity that was hard to read, awkward to place because of its size and weight, and because it was such a specialized instrument that I used only occasionally, the battery was continually running down. Also, it was a very expensive device, and so used mostly by piano tuners who made their life tuning.
I tried the
Reyburn CyberTuner (RCT) software on a PC laptop in the hopes that it would address my needs. This was software that my former piano tuner lived by, essentially the equivalent of the Verituner, but on a PC. Not only was it incredibly expensive, as all of the professional tuning solutions are, the manufacturer was (and is) so paranoid about piracy that access was controlled by a "dongle" that limited use to one device at a time. I don't doubt that RCT is excellent for the professional piano tuner, but it simply didn't work with clavichords and was awkward at best with harpsichords. That was an expensive experiment. Don't take this as a criticism of Reyburn: they do not advertise it for anything other than piano tuning. As for the paranoia, I'm sure there is good cause, but one can't help but wonder just how dishonest piano tuners are!
My venerable Perterson 490ST has remained in the closet for years. I love this device in concept, as you can actually see what is going on as you tune. Talk about heavy and awkward: this is not a portable tuner! Peterson's "virtual strobe tuner" on my iPod provides a quick and accurate solution, but for only one partial at a time, and you can't select the partial. It is a "strobe" only in that it has a display reminiscent of a true strobe tuner, but only one of the frequency bands will correctly represent one of the partials at a time. On a real strobe tuner each band represents one of the partials and will independently drift clockwise or counter-clockwise relative to the target pitch.
There are plenty of small and inexpensive tuners that measure only one partial at a time. They may be very accurate for a single partial, but there are a couple of problems with this. First of all, the fundamental, or first partial, may not be (in fact is rarely) the loudest, nor may the loudest be even be the second, but perhaps will be the third partial, which is an octave and a
fifth above the fundamental. (Indeed, the lower the fundamental, often the the upper partials are stronger.)
The other problem is that few, if any, of the partials will match their theoretical frequency because of
inharmonicity. You can see this quite dramatically on a true strobe tuner. So, what happens if the actual third partial sounds flatter than the theoretical because of string properties and you tune to it? The fundamental will be out of tune. Piano tuners get very good at making adjustments and compromises through a highly trained ear and various tricks-of-the-trade.
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| Verituner for iPhone/iPod |
I was overjoyed to see that
Veritune had released an app for the iPhone/iPod Touch. Think of the Verituner as a spectrum analyzer that builds a model of the partials for all of the notes, then calculates targets based on other parameters you give it, such as temperament and "stretch." This is complex and sophisticated and definitely overkill if all you want to do is set the notes on a guitar or violin.
Expensive? You bet! However, the current cost is about a third of what the VT100 "Black Box" cost. It works identically and I found it is actually faster on my iPod Touch. It tuned my clavichord without problem. This led me to try it on my zither, a seemingly unlikely candidate. However, it has plenty of strings with the classic challenge of inharmonicity.
While I have tuned many clavichords and harpsichords with the Verituner, my attempts at tuning a piano have been less successful, largely because of the mechanics of setting the pitch. Be warned: putting this app on your iPhone does not make you a piano tuner! With patience and practice you might do a credible job, but trust me, it is a lot of work. If I still had a piano, I'd pay a professional!