Pengoreksi Nada Menggunakan Mikrokontroler untuk Meningkatkan Kualitas Suara pada Biola

Danu Kusuma Wardhana(1*), Tri Kuntoro Priyambodo(2)

(2) Department of Computer Science and Electronics, Universitas Gadjah Mada
(*) Corresponding Author


 Violin is a frteless musical instrument so that carefulness of the player affects the tone quality. For begineers, it tooks a lot of time for fingering process, so if they are not skillfull enough it will generate many out-of-tune pitches which uncomfortable to be heard. For clearing this issue, it needs an equipment for generating in-tune pitches while the violinist is playing-live.

System is made using sound sensor for receiving the wave of the violin, turned it out to electric signal and then detecting its pitch value – reading it as the interval of the main frequency – and then playing desired in-tune audio data of violin tones. The main process is done by microcontroller supported by audio shield. The output is in-tune audio data which played through speaker.

System achieved 100% accuracy while using pure sinusoid wave tones for testing. System achieved  17,33% accuracy while  using pre-recorded violin tones for testing. System achieved 10,66% accuracy while using live-played violin tones for testing.


violin, violin pitch, pitch correction, sinusoid wave, frequency counter

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[1] Chandra, R., 2010, Rekognisi Berbasis Audio dengan Pendekatan Alih Ragam Gelombang Singkat Diskrit.

[2] Jensen, Nikolas Borrel., 2009, Real Time Pitch Correction, Technical University of Denmark,Copenhagen.


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