Double-stop ViolinTuner

Violin tuner supporting double-stop.
The tuning by a difficult double-stop is possible by the conventional electronic tuner and tuner application by the tuner function.
In tuning the violin, if you adjust one string, the pitch will be affected by the other strings and the pitch will change. It also changes with the power of bowing. Furthermore, the pitch changes when you play a single note and when you play a double-stop.
By using TuningToneForViolin's tuner function, you can visually grasp the pitch of the string being sounded with a spectrum waveform, so when you play the AD's double-stop and rotate peg A, the sound of D string How much deviation When you play the AD 's double-stop, you can use it not only for adjusting the sound but also for training to feel sound, such as how much deviation and what kind of swell of sound is felt.
If you use the tuner function on iphone 5 or earlier devices, output sound may be interrupted if you analyze sound output and input sound at the same time due to insufficient processing power. If the sound is interrupted, please turn off the setting display update at sounding.
Calculate the frequency of the perfect fifth on the basis of the frequency of the A, TuningToneForViolin synthesizes sine, triangle, sawtooth.
I assume that you are such usage of the pitch pipe.
The layout is easy to operate, even while holding a musical instrument.
I think for other frequencies does not include pure sine wave, swell of sound of double-stop shifted even a beginner is felt, and can be tuning well.
G Sound of the sine wave so difficult to hear in the built-in speaker, please try "octave" the (sin wave).