The New Zealand Digital Library offers several collections of information over the World Wide Web. Although fulltext indexing is the primary access mechanism, musical collections can also be accessed through a novel melody retrieval system. In offering this service over a three-year period, we have had to face many practical challenges in building, maintaining, and administering diverse collect...

In this paper, we will examine the importance of music complexity as a factor for melody recognition in multi-voiced popular music. The assumption is that the melody (or lead instrument) will contain the largest amount of information – that it will be the least redundant voice. Measures of melodic complexity calculated from pitch and timing information are proposed. We test the different comple...

This extended abstract describes our submission to the MIREX 2008 evaluation task on Audio Melody Extraction. This algorithm has specifically been designed for vocal F0 extraction in the presence of harmonic interference. The results of the evaluation show high pitch estimation accuracy of our method but lower melodic voice detection accuracy than other submissions.

Many methods have been developed for structural size and configuration optimization in which cross-sectional areas are usually assumed to be continuous. In most practical structural engineering design problems, however, the design variables are discrete. This paper proposes two efficient structural optimization methods based on the harmony search (HS) heuristic algorithm that treat both discret...

In this paper, we propose four index structures for music data retrieval. Based on suffix trees, we develop two index structures called Combined Suffix Tree and Independent Suffix Trees. These methods still show shortcomings for some search functions. Hence we develop another index, called Twin Suffix Trees, to overcome these problems. However, the Twin Suffix Trees lack of scalability when the...

Due to the variety of products, simultaneous production of different models has an important role in production systems. Moreover, considering the realistic constraints in designing production lines attracted a lot of attentions in recent researches. Since the assembly line balancing problem is NP-hard, efficient methods are needed to solve this kind of problems. In this study, a new hybrid met...

The extended abstract presents our approach to extraction of melody from audio recordings, based on timbral similarity of melodic fragments. The algorithm was submitted to MIREX 2005 competition and scored 5 among 9 submissions, with an average score of 59.18% correctly transcribed voiced and unvoiced portions.

extension of inter-turn fault in windings of pmsm can damage all parts of electrical systems, and in some cases in sensitive applications may lead to irreparable events. identification of such small faults at incipient steps can be so helpful to protect entire part of electrical system. in this paper, intelligent protection system is designed which is made by two major parts. in the first part ...

We describe a method of indexing and efficiently searching music melodies based on their continuous dominant fundamental frequency (f0) contours without obtaining notelevel transcriptions. Each f0 contour is encoded by a redundant set of wavelet coefficients that represent its shape in level-normalized form at various locations and time scales. This allows a query melody to be exhaustively comp...

Based on introducing two optimization algorithms, group search optimization (GSO) algorithm and particle swarm optimization (PSO) algorithm, a new hybrid optimization algorithm which named particle swarm-group search optimization (PS-GSO) algorithm is presented and its application to optimal structural design is analyzed. The PS-GSO is used to investigate the spatial truss structures with discr...