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0.1 Cent Precision: Why It Matters & What It Means
What a cent is
A cent is simply a small unit of pitch: 100 cents to a semitone, 1200 to an octave. That is all you need to read an accuracy spec - a tuner resolving to 0.1 cent shows pitch ten times finer than one that reads to whole cents. For the full derivation (equal-tempered ratios, how the scale is built), see our cent accuracy blog article.
Why 0.1 cent matters
The ear can hear pitch differences smaller than one cent in many contexts:
- Unison beating. Two strings a few cents apart beat audibly. Under 1 cent it becomes a slow shimmer you still perceive as "not quite locked."
- Strobe settling. A harmonic ring that has stopped moving means the pitch is locked far below one cent. To show that harmonic ring as truly stopped rather than crawling, the display has to resolve finer than the cent level.
- Reference vs. reading. When you compare one string against another (intonation, unisons, ensemble blend), the difference between two readings is what you act on. A tuner that rounds to 1 cent hides the very differences you are trying to find.
That is why StroboPro resolves to 0.1 cent on screen: it is the resolution at which the reading actually matches what the strobe is doing.
Resolution vs. accuracy: be precise
StroboPro states 0.1-cent display resolution, not a lab-measured accuracy specification. Resolution is "how fine a change can the screen show"; accuracy is "how close is the reading to the true pitch under controlled measurement." The two are different and vendors use them loosely. StroboPro is honest about which one it claims.
In practice, on a sustained tone with a clean signal, the displayed reading is stable and useful at the 0.1-cent level. Microphone quality, room noise, and the instrument itself all set the real-world floor on what you can resolve.
When 0.1 cent helps and when it doesn't
- Piano, intonation, unisons, recording blends: sub-cent resolution is genuinely useful; you are comparing nearby tones.
- Live gig tuning on a noisy stage: you will be doing well to hold within 2-3 cents regardless of the tuner's resolution, so 0.1 cent is more than you need.
Read the full guide
For the full technical article on cents, display resolution, and why it matters, see the blog:
Read "Cent Accuracy: Why 0.1 Cent Matters" on the blog →Related guides
Frequently asked questions
What does 0.1 cent accuracy mean?
0.1 cent is one-thousandth of a semitone. A tuner displaying at 0.1-cent resolution shows pitch roughly ten times finer than one that reads to whole cents.
Can a person hear a 0.1 cent difference?
A single 0.1-cent difference on one isolated note is below most people's threshold. But differences under one cent are audible as beating when two tones sound together (unisons, chords, ensemble blend), which is why sub-cent resolution matters for piano, intonation, and recording work.
Is 0.1 cent accuracy or resolution?
They are different. Resolution means how fine a change the display can show; accuracy means how close the reading is to a lab-measured true pitch. StroboPro states 0.1-cent display resolution, not a lab accuracy specification.
Do I need 0.1 cent resolution to tune a guitar?
For everyday guitar tuning, holding within 2-3 cents is fine and 0.1 cent is more than you need. It becomes useful for intonation work, piano, unisons, and any context where you are comparing two nearby tones.
Published by Applicaudia, the maker of StroboPro. All figures describe display resolution, not lab-measured accuracy. The perceivable difference thresholds are generalisations and vary by listener, instrument, and context.
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