Development of a computer based analysis and learning support system for north indian classical music
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Date
2016
Authors
Gunasekera, S. N.
Journal Title
Journal ISSN
Volume Title
Publisher
University of Peradeniya
Abstract
Despite the recent paradigm shift of the teaching practice pertaining to North Indian Classical Music (NICM) has transformed the computer based learning support system essential and pivotal, the currently available software from this class hinders the user from exposing to the colourful, intricate and subtle passages of NICM due to the shades of Western musical connotations in their structures.
In this work, a full-fledged computer based analysis and learning support system addressing the salient features of NICM, which are not embedded in currently available counterparts has been designed and implemented.
One main type of aforementioned unique features include s the user friendly notation editor facilitated with microtones in several languages and the interpreter based on traditional Bhathkande system. The other features include transparent instrument modelling techniques, such as physically inspired synthesis and embedding original techniques for articulation in synthesis based on Autoregressive Moving Average (ARM A) process and tone modulation. Pertaining to modelling, attention was focused to the realization of timbre , possessing highl y nonlinear and complex attributes such as of Sitar. The near perfect implementation of articulation techniques, such as Meend, Gamak and Gazette using ARMA modelling are some noteworthy contributions. Further, harmonic content of sound is superimposed on a parameterized amplitude envelop in modelling nonlinear triggering timbre of Santoor and the resonance vibration of sympathetic strings of Sarod to the near perfection.
A validation technique for sound generated by a softsynth is devised using timbrel properties, namely spectrum-centroid, tristimulus and zero-crossing rate. The properties of timbre of Sitars , Sarodhs and Santoors of several breeds are identified with the aid of a mapping defined using aforementioned timbrel properties. The results show that the zone occupied by the synthesized Sitar string in the validation timbre space is closer to that of natural Sitars in contrast to commercially available synthesizers.
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Keywords
North indian classical music , NICM , Computer based system , Learning support system