Jayita Mitra¹ and Diganta Saha², ¹Camellia Institute of Technology, India and ²Jadavpur University, India

In this paper we have focused on an efficient feature selection method in classification of audio files. The main objective is feature selection and extraction. We have selected a set of features for furtheranalysis, which represents the elements in feature vector. By extraction method we can compute a numerical representation that can be used to characterize the audio using the existing toolbox. In this study Gain Ratio (GR) is used as a feature selection measure. GR is used to select splitting attributewhich will separate the tuples into different classes. The pulse clarity is considered as a subjectivemeasure and it is used to calculate the gain of features of audio files. The splitting criterion is employed in the application to identify the class or the music genre of a specific audio file from testing database. Experimental results indicate that by using GR the application can produce a satisfactory result for music genre classification. After dimensionality reduction best three featureshave been selected out of various features of audio file and in this technique we will get more than 90% successful classification result.

Data Mining, Feature Extraction, Audio Classification, Gain Ratio, Pulse Clarity