The fact that the violin is a fretless instrument brings along intonation problems both in its performance and in its education. The introduction of technology into educational environments day by day, has led to the need to try different methods besides the traditional methods for solving intonation problems. The aim of this study is to examine the effect of computer-based visual feedback on the student's intonation on the violin. For this purpose, an 8-week experimental process was carried out with 8 violin students studying in the 2nd, 3rd and 4th grades of the music teaching undergraduate program in the 2021-2022 academic year. In the quantitative dimension of the research, which was designed with mixed method design, a pretest -- post-test single-group experimental design was used. The quantitative data were collected with the intonation evaluation form and the qualitative data were collected with diaries and a semi-structured interview form. The dependent samples t-test was used in the analysis of the quantitative data, and descriptive analysis technique was used in the analysis of the qualitative data. In the implementation process of the study, students were given visual feedback only with Cubase VariAudio software. At the end of the study, it was seen that computer-based visual feedback contributed positively to the intonation skills of the students. The students stated that the study made an abstract situation concrete, offered an opportunity to make self-evaluation, contributed positively to the motivation and limited class hours, and that they wanted to use it while practicing on their own.