#1
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Tuners: accuracy vs. precision...
In another thread discussing tuners that people use there seems to be quite a bit of confusion about what accuracy is, and the importance of the distinction between accuracy and precision. I thought this was important so am posting this as a new thread...this image should help:
A tuner should be both accurate AND precise. To my mind, there are very few tuners that are both...and those that are are strobe tuners. Phil
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Solo Fingerstyle CDs: Two Steps Forward, One Step Back (2021) One Size Does Not Fit All (2018) I play Crosby, Emerald, Larrivée, Lowden, Rainsong & Tacoma guitars. Check out my Guitar Website. See guitar photos & info at my Guitars page. |
#2
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All the accuracy and precision I need is in an A440 tuning fork and my ears.
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Faith Mars FRMG Faith Neptune FKN Epiphone Masterbilt Texan |
#3
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Yarp, I use a reference tone and ears, no need for an expensive tuner.
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Martin DRS-1 Epiphone PR5-eb Tanglewood 12 string dread Washburn Mg40 natural alder Tanglewood les paul copy with twin humbuckers |
#4
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Not the most practical on a noisy stage though.
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#5
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I agree, although my gigging days are over so it isn't an issue any longer.
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Faith Mars FRMG Faith Neptune FKN Epiphone Masterbilt Texan |
#6
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another point about tuners, besides there accuracy and precision, is how that translates into usability. for example, i have a tuner that claims to be extremely accurate and precise, but the way the display works makes it hard to use that accuracy and precision.
neat diagram, phil, i'll have to think about it. the "accurate not precise" kind of stands out to me. (as well as the "not accurate not precise"). they seem to be the interesting ones. Last edited by mc1; 01-17-2014 at 07:41 AM. |
#7
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Quote:
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#8
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Quote:
Phil
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Solo Fingerstyle CDs: Two Steps Forward, One Step Back (2021) One Size Does Not Fit All (2018) I play Crosby, Emerald, Larrivée, Lowden, Rainsong & Tacoma guitars. Check out my Guitar Website. See guitar photos & info at my Guitars page. |
#9
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No, they're not...read my reply to mc1 above.
Phil
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Solo Fingerstyle CDs: Two Steps Forward, One Step Back (2021) One Size Does Not Fit All (2018) I play Crosby, Emerald, Larrivée, Lowden, Rainsong & Tacoma guitars. Check out my Guitar Website. See guitar photos & info at my Guitars page. |
#10
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Hey, if Segovia could do it in his early punk phase, so can you. Suck it up.
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#11
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Maybe in a symbolic sense, the one labeled "accurate not precise" is neither in a literal shooting sense. More illustrative of accuracy and calibration.
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#12
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Tuning or punk, you can only pick one
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#13
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I like that diagram. I think I'll use that in other conversations, too.
In engineering terms, we think of accuracy and precision when measuring physical things (like frequencies). If you are measuring the dimensions of a mechanical part using two different calipers or micrometers, and tool-A can read out to 0.0000" but tool-B can only read out to 0.000" inches we say that tool-A has greater precision. That's analogous to your bullseye diagram, where you have a very tight cluster. If tool-C can read within +/- 0.0005 and tool-D can read within +/-0.001 we say tool-C has a tighter tolerance and, therefore, is more accurate. Your diagram is a nice illustration of the concept. I had tremendously bad luck with a crappy strobe tuner. I'm not sure (yet) that strobe tuners are generally better. Why are they? I understand the level of precision and response time of the light is better, but there is a power circuit driving the light at a specific frequency. If that wavers, then the accuracy is lost. A piezo sensor has a circuit reading a frequency. If that wavers, accuracy is lost. I think they are probably pretty comparable, no? Anyway, I greatly disliked my crappy strobe tuner. I had an in-line digital tuner and hated that as well. I used a Android microphone app with pretty good luck, then got Snark piezo tuners and have been very happy.
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Fazool "The wand chooses the wizard, Mr. Potter" Taylor GC7, GA3-12, SB2-C, SB2-Cp...... Ibanez AVC-11MHx , AC-240 |
#14
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The "accurate" and "precise" concept refer to bias and consistency (or validity and reliability). An unbiased (accurate) device gives a correct value on average. A precise device gives highly consistent values.
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Bob DeVellis |
#15
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Quote:
and to get really far out, these diagrams, i'd assume, are four shots aimed once and shot 4 times without any correction. another interesting thing is the sample size of 4, which i suppose is just enough to make the point. Quote:
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