We present a distributed data structure, which we call "RootChord". To our knowledge, this is the first distributed hash table which is able to adapt to changes in the size of the network and answer lookup queries within a guaranteed two hops while maintaining a routing table of size Theta(sqrt(N)). We provide pseudocode and analysis for all aspects of the protocol including routing, joining, maintaining, and departing the network. In addition we discuss the practical implementation issues of parallelization, data replication, remote procedure calls, dead node discovery, and network convergence.

A piece of popular music is usually defined as a combination of vocal melody and instrumental accompaniment. People often start with the melody part when they are trying to compose or reproduce a piece of popular music. However, creating appropriate instrumental accompaniment part for a melody line can be a difficult task for non-musicians. Automation of accompaniment generation for vocal melodies thus can be very useful for those who are interested in singing for fun. Therefore, a computer software system which is capable of generating harmonic accompaniment for a given vocal melody input has been presented in this thesis. This automatic accompaniment system uses a Hidden Markov Model to assign chord to a given part of melody based on the knowledge learnt from a bank of vocal tracks of popular music. Comparing with other similar systems, our system features a high resolution key estimation algorithm which is helpful to adjust the generated accompaniment to the input vocal. Moreover, we designed a structure analysis subsystem to extract the repetition and structure boundaries from the melody. These boundaries are passed to the chord assignment and style player subsystems in order to generate more dynamic and organized accompaniment. Finally, prototype applications are discussed and the entire system is evaluated.

Despite a widely held view that serialism is incompatible with jazz improvisation, there are many instances of jazz musicians successfully engaging with this concept. This conflict seems likely to have arisen from differing interpretations of ‘serialism’; however, the question of how a jazz improviser’s approach to serialism might, or perhaps should, differ from a classical composer’s, has been left unasked. In addition, most attempts at the use of serialism within improvisation remain undocumented by the musicians concerned. The chord stranding techniques of Lutoslawski are less well known and less controversial than serialism. Connections between Lutoslawski’s twelve-note chords and traditional twelve-note rows are obvious, as are connections between the concept of harmonic ‘strands’ and the jazz harmonic device of superimposition. The possibilities for use of Lutoslawski’s ideas within a jazz context are interesting and worthy of consideration. This research project involves the composition and performance of jazz pieces applying serialism and chord stranding, as well as the exploration of precedents for these ideas within the jazz tradition. The four CD recordings within this thesis present the initial development of these concepts (CDs 1 and 2); an exploration of serialism in the music of John Coltrane (CD 3); and an album of original material demonstrating the integrated application of these concepts (CD 4). The exegesis describes the broader context of this project and examines the relevant music theory concepts. It uses analysis of transcriptions to show the specific application of techniques. The key outcomes from this research are (i) the development and (ii) the demonstration of techniques for pitch organisation based on serialism and chord stranding that are appropriate for jazz improvisation. The recordings and exegesis show the successful integration of these techniques with existing melodic and harmonic ideas familiar to jazz musicians. It is argued that the approach to jazz improvisation explored within this research represents a novel and radical reinterpretation of the traditional concept of serialism and that this approach is helpful when considering the effective use of serialism in a jazz context. From a broader perspective, this research offers a case study of an improviser grappling with the challenges of synthesis and stylistic integrity and, as such, it has the potential to inform contemporary debates concerning tradition and innovation within jazz. / v. 1 Exegesis -- v. 2 CD Recordings: CD1. Serialism concept development ; CD2. Chord stranding concept development ; CD3. Chris Martin Trio play A love supreme ; CD4. Triptych, 1+1=1 / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1341787 / Thesis (Ph.D.) -- University of Adelaide, Elder Conservatorium of Music, 2008

Despite a widely held view that serialism is incompatible with jazz improvisation, there are many instances of jazz musicians successfully engaging with this concept. This conflict seems likely to have arisen from differing interpretations of ‘serialism’; however, the question of how a jazz improviser’s approach to serialism might, or perhaps should, differ from a classical composer’s, has been left unasked. In addition, most attempts at the use of serialism within improvisation remain undocumented by the musicians concerned. The chord stranding techniques of Lutoslawski are less well known and less controversial than serialism. Connections between Lutoslawski’s twelve-note chords and traditional twelve-note rows are obvious, as are connections between the concept of harmonic ‘strands’ and the jazz harmonic device of superimposition. The possibilities for use of Lutoslawski’s ideas within a jazz context are interesting and worthy of consideration. This research project involves the composition and performance of jazz pieces applying serialism and chord stranding, as well as the exploration of precedents for these ideas within the jazz tradition. The four CD recordings within this thesis present the initial development of these concepts (CDs 1 and 2); an exploration of serialism in the music of John Coltrane (CD 3); and an album of original material demonstrating the integrated application of these concepts (CD 4). The exegesis describes the broader context of this project and examines the relevant music theory concepts. It uses analysis of transcriptions to show the specific application of techniques. The key outcomes from this research are (i) the development and (ii) the demonstration of techniques for pitch organisation based on serialism and chord stranding that are appropriate for jazz improvisation. The recordings and exegesis show the successful integration of these techniques with existing melodic and harmonic ideas familiar to jazz musicians. It is argued that the approach to jazz improvisation explored within this research represents a novel and radical reinterpretation of the traditional concept of serialism and that this approach is helpful when considering the effective use of serialism in a jazz context. From a broader perspective, this research offers a case study of an improviser grappling with the challenges of synthesis and stylistic integrity and, as such, it has the potential to inform contemporary debates concerning tradition and innovation within jazz. / v. 1 Exegesis -- v. 2 CD Recordings: CD1. Serialism concept development ; CD2. Chord stranding concept development ; CD3. Chris Martin Trio play A love supreme ; CD4. Triptych, 1+1=1 / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1341787 / Thesis (Ph.D.) -- University of Adelaide, Elder Conservatorium of Music, 2008

MediaSense is an EU funded platform that is an implementation of an Internet-of-Things framework. This project adds two fundamental functions to it, namely, a new lookup service based on a peer-to-peer Distributed Hash Table (DHT) called Chord and a reliable communication protocol based on UDP (RUDP). The lookup service makes the use of a central server, that can be a single point of failure or get compromised, unnessecary. Reliable UDP transmits data from the very first packet onwards and avoids any connection management as itis packet based. The methodology for both functions was to develop a simulation environment, compatible to MediaSense, at its initiation, at which point its functionality can be tested and measurements can betaken. The resulting DHT simulation environment enables there to be deep insight into and a control of the state and action of the DHT. The resulting graphs show the performance properties of both the DHT and RUDP. In conclusion, the MediaSense platform has been extended by means of two usable functionalities and which also leaves space for further development such as for security enhancements and performance increases. / MediaSense

The thesis speculates upon the source of Scriabin's pitch selection in several of his atonal works, concluding that Scriabin's "principle" stems from his own "mystic chord," its inversion at the major third, and the transposition of these two chords at the tritone. These four chords share the same invariant harmonic basis, Scriabin's characteristic French-sixth sonority. The quartet of chords combine to form two nine-note scales, each containing as a subset the octatonic scale. The thesis demonstrates how Scriabin composed his works in harmonic blocks, utilizing only the notes from these scales. The thesis traces Scriabin's atonal style back to his tonal period. His fascination with tritone adjacencies and relationships is discussed, and serves to support the theory. Other harmonic and linear theories are discussed. Also, the thesis shows how Scriabin used these scales structurally in his works.

Portable, handheld, and wearable devices are an integrate part of everyday life, yet there is no well-established text inputmethod for devices with very small screens. Speech to text has been a quick fix, but entails privacy concerns and can beobtrusive. Chord keyboards bring various advantages for application in a mobile environment, as they require fewer keys andcan thus be small and portable. The aim of this work is to suggest an alternative to the QWERTY keyboard, suitable for textentry on devices of all sizes, shapes and mobility requirements. A one hand operational chord keyboard was developed andevaluated in a small user study with regard to its social acceptability. Learnability showed to be a concern that discouragesuse, while social aspects did not seem to be an issue.

An introduction to Chord Algorithm.

Source is converted into pdf format. An introduction to Chord Algorithm.

The purpose of this paper is to discover the environmental characteristics of the "Mystic Chord" in the first four Sonatas for Piano by Alexander Scriabine. This paper explores the manner of approach, manner of resolution, harmonic function, position, melodic function, and rhythmic position of the "Mystic Chord".