Piano tuning is hundreds of years old and as such, we still use some piano tuning techniques that are based in the past.
One of those techniques is opinion.
Before technology, people's opinions were highly regarded. Now if someone makes a claim that seems outrageous, everyone at the party will take out their phone (if it isn't already out!) and start googling this opinion to see if the person knows what they are talking about.
Plato said, "Opinion is the lowest form of knowledge".
This is a brilliant observation. Of course. He was Plato. However, still today, and especially with piano tuning, we still use opinion and often don't give it much of a thought, especially if we are the ones making the opinion!
For a simple example, take a look at this shade of red.
It should be obvious by comparing the shade to the actual stop sign in question that the shade is lighter.
The screen brightness is not an issue, and exactly which stop sign is not an issue - it's right there, in front of us, outside our heads; external.
So how can we use external judgment when tuning pianos?
The first step is to realize how often we use internal judgment.
Then, realize how inaccurate it is.
Then realize how vanity drives us to use it often. I mean, who wouldn't want to believe that their ear is so incredibly sensitive that it can hear small things that others can't. (That arrogance refers to another secret for another post.)
OK. So now I realize that I shouldn't be relying on my opinion. But you haven't really told me what to do!
Right. And here it is.
At each step in the tuning, there are ways to use external judgments; ways to know for sure if a pitch is good, without guessing; ways to listen to the piano for guidance on what sounds best. You just need to know what these external ways are.
For example: Tuning Unisons.
Instead of just tuning a unison and listening to it and stopping when you think it is clean, compare it to a sound that you know is a clean unison.
The Single String Test
1) Play the unison.
2) Mute all but one string.
3) Play the single string
4) Compare
If there is a difference in the sound between the unison and the single string, any difference, any difference at all, no matter how small, your unison is not clean enough. Fix it until there is no difference between the sound of the unison and the sound of the single string.
It's as simple as that.
If you would like to read more about how to use external judgments to tune better unisons, enter your email address below. I will send you a PDF that explains Pair-Compare, another great external judgment tool that can help you tune better unisons.