Ajay Srinivasamurthy

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We present an audio chord recognition system based on a generalization of the Hidden Markov Model (HMM) in which the duration of chords is explicitly considered-a type of HMM referred to as a hidden semi-Markov model, or duration-explicit HMM (DHMM). We find that such a system recognizes chords at a level consistent with the state-of-the-art systems –(More)
In this paper, we approach the tasks of beat tracking, down-beat recognition and rhythmic style classification in non-Western music. Our approach is based on a Bayesian model, which infers tempo, downbeats and rhythmic style, from an audio signal. The model can be automatically adapted to rhythmic styles and time signatures. For evaluation , we compiled and(More)
A supervised approach to metrical cycle tracking from audio is presented , with a main focus on tracking the tāḷa, the hierarchical cyclic metrical structure in Carnatic music. Given the tāḷa of a piece, we aim to estimate the akṣara (lowest metrical pulse), the akṣara period, and the sama (first pulse of the tāḷa cycle). Starting with percussion enhanced(More)
In many cultures of the world, traditional percussion music uses mnemonic syllables that are representative of the tim-bres of instruments. These syllables are orally transmitted and often provide a language for percussion in those music cultures. Percussion patterns in these cultures thus have a well defined representation in the form of these syllables ,(More)
Tok! is a collaborative acoustic instrument application for iOS devices aimed at real time percussive music making in a co-located setup. It utilizes the mobility of hand-held devices and transforms them into drumsticks to tap on flat surfaces and produce acoustic music. Tok! is also networked and consists of a shared interactive music score to which the(More)
Lyrics-to-audio alignment aims to automatically match given lyrics and musical audio. In this work we extend a state of the art approach for lyrics-to-audio alignment with information about note onsets. In particular, we consider the fact that transition to next lyrics syllable usually implies transition to a new musical note. To this end we formulate rules(More)
Most musical phenomena involve repetitive structures that enable listeners to track meter, i.e. the tactus or beat, the longer over-arching measure or bar, and possibly other related layers. Meters with long measure duration, sometimes lasting more than a minute, occur in many music cultures, e.g. from India, Turkey, and Korea. However, current meter(More)