Gayageum tuner: 12-string sanjo and jeongak
This twelve-string gayageum tuner keeps the three published Korean settings: sanjo, jeongak pyeongjo and jeongak gyemyeonjo. The sanjo sounding notes are G2 C3 D3 G3 A3 C4 D4 E4 G4 A4 C5 D5.
Open notes and frequencies
Gayageum tuner: 12-string sanjo and jeongak: Sounding targets · Standard sanjo (sounding pitch) · A4 = 440 Hz.
| String / course | Note | Hz |
|---|---|---|
| 1 | G2 | 98.00 |
| 2 | C3 | 130.81 |
| 3 | D3 | 146.83 |
| 4 | G3 | 196.00 |
| 5 | A3 | 220.00 |
| 6 | C4 | 261.63 |
| 7 | D4 | 293.66 |
| 8 | E4 | 329.63 |
| 9 | G4 | 392.00 |
| 10 | A4 | 440.00 |
| 11 | C5 | 523.25 |
| 12 | D5 | 587.33 |
How to use it
- Choose the tuning, target or note convention described below. Set the reference A to match your ensemble before comparing pitches.
- Press Turn on microphone and allow microphone access. Work in a quiet place and sound one note at a time.
- Let the attack pass and compare a steady note, its octave and cents. Make a small adjustment, then repeat the measurement.
- Check the full instrument again after adjustments. Stop the microphone when you finish; reference tones and the guide remain available.
Help and explanations
Tuning and register
The numbered strings run from string one, lowest and farther from the player, to string twelve. In jeongak pyeongjo they are E♭2 F2 A♭2 B♭2 E♭3 F3 A♭3 B♭3 C4 E♭4 F4 A♭4; gyemyeonjo changes the sixth string to E♭3 and the ninth to D♭4. These are sounding notes, not the sanjo notation written a fifth above them. Pluck one string at a time without left-hand bending and check the matching movable bridge gently. A twenty-five-string modern gayageum needs its own chart.
Getting a steady reading
Place the microphone close enough to hear a clear tone, without touching the instrument. Stop reference playback before listening through the microphone. A room echo, another player or a strong overtone can make the detected octave jump. Repeat a short, steady sound and compare by ear before making another adjustment.
Tips
- Match the note letter and the octave, not only the needle position.
- Use the pitch and stringing intended for your model; a chart for another size can imply a different register.
- Return to the same reference A when playing with other musicians.
Frequently asked questions
Do I need to install an app?
No. The tuner works in a current browser with microphone permission. The audio is analyzed on your device and is not recorded or uploaded.
What does zero cents mean?
It means the measured pitch matches the selected reference. For a tradition with different intervals, use the intended cents offset and confirm the musical relationship by ear.
Why does the note or octave change?
The microphone can pick up an overtone or another sounding string. Isolate the note, reduce background sound and wait for a stable reading before changing the instrument.