Müzik Notalarının MATLAB Yazılımıyla Belirlenmesi

Abstract

Muzik aletlerinden cikan seslerin her birinin kendine ozgu frekanslari ve nota degerleri vardir. Bu notalarin bilinmesi uzman kulagi icin cok kolay iken, muzikle ugrasmamis bir kisi icin bunlarin belirlenmesi hemen hemen mumkun degildir. Bir muzik aletinden cikan seslerin frekanslari ve nota degerleri bilinir ve bunlar dijital bir ortama aktarilabilirse, diger aletlerle kiyaslamasi rahatlikla yapilabilecektir. Bu frekans degerleri kullanilarak da degisik muzik parcalarinin bilgisayar ortaminda yapilmasi kolaylasacaktir. Bunun icin bu calismada, bir muzik aleti olan gitardan cikan nota degerlerinin belirlenmesi ve bunlarin frekanslarinin saptanmasi icin MATLAB tabanli bir yazilim gelistirilmistir. Bu yazilim sayesinde ilk olarak muzik aletinin sesi MATLAB ortamina kaydedilmistir. Daha sonra da bu sesler islenerek frekanslari belirlenmis ve bunlarin hangi notayi temsil ettigi cikarimi yapilmistir. Bunlar MATLAB grafik kullanici arayuzu (GUI) yardimiyla da ekranda gorsellestirilerek kullaniciya sunulmustur. Saptanan degerlerin dogrulamasi muzik notalarini taniyici baska bir yazilim ile gerceklestirilmistir. Abstract: The sounds of musical instruments each have their own frequencies and note values. While it is easy for the expert's ear to know these notes, it is almost impossible to identify them for a person who is not involved in music. The frequencies and note values of these sounds coming from a musical instrument are known and if they can be transferred to a digital environment, they can be compared with other instruments. Using these frequency values, it will be easier to make different music pieces in computer environment. In this study, MATLAB based software has been developed to determine the musical values of notes and to determine their frequencies. Thanks to this software, the sound of the instrument was first recorded in MATLAB. Then, these sounds were processed and their frequencies were determined and which notes were represented. These are visualized on the screen with the help of the MATLAB graphical user interface (GUI) and presented to the user. Verification of the detected values was carried out by different software that recognizes the musical notes.