The tuning system is an essential aspect of a musical piece. It specifies the scale intervals and contributes to the emotions of a song. There is a direct relationship between the musical mode and the tuning of a piece for modal musical traditions. In a broader sense it represents the different genres. In this research algorithms based on spectral and chroma averages are developed to construct patterns from audio musical files. Then a similarity measure like the Manhattan distance or the cross-correlation determines the similarity of a piece to each tuning class. The tuning system provides valuable information about a piece and is worth incorporating into the metadata of a musical file.
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