CMMR is an annual event focusing on important aspects of computer music. CMMR 2008 was the ?fth event in this series and was co-organized by A- borg University Esbjerg, Denmark (http://www.aaue.dk), ...the Laboratoire de M´ ecanique et d'Acoustique, CNRS in Marseille, France (http:/www.lma.cn- mrs.fr) and the Network for Cross-Disciplinary Studies of Music and Meaning, University of Southern Denmark (http://www.ntsmb.dk/). The conference was held in Copenhagen, May 19-23, 2008. The four previous editions of CMMR gathered a large number of notew- thy papers by researchers from the ?eld of computer music. The proceedings of these conferences were published in the Lecture Notes in Computer Science series (LNCS 2771, LNCS 3310, LNCS 3902 and LNCS 4969). The present e- tion follows the lineage of the previous ones, including a collection of 21 papers specially reviewed and corrected for this proceedings volume. The ?eld of computer music embraces a large number of research areas that span from information retrieval, programming, arti?cial intelligence to aco- tics, signal processing and sound modeling. In the last CMMR gatherings an increased emphasis was placed on the role of human interaction at all levels of musicalpractice,aswellasperceptualandcognitiveaspects inorderto establish relationsbetweenthestructureofsoundsandtheirimpactonhumanbeings.The identi?cation of perceptually relevant sound structures is linked to the notion of the sense of sounds, which was the title of the CMMR 2007 conference.
Puberfonija je funkcionalni glasovni poremećaj karakteriziran nemogućnošću promjene glasa iz frekvencijski višeg, predadolescentnog, u frekvencijski niži glas adolescencije i odrasle dobi. Cilj ovog ...istraživanja bio je napraviti usporedbu parametara akustičke i perceptivne analize karakteristika glasa kod bolesnika s puberfonijom prije i nakon provedene glasovne terapije te evaluirati ishode terapije.
U istraživanje je uključeno 19 bolesnika s dijagnosticiranom puberfonijom. Svim su ispitanicima karakteristike glasa procijenjene objektivnom i subjektivnom procjenom glasa u dva navrata – prije i nakon provođenja glasovne terapije. Objektivna procjena karakteristika glasa obuhvatila je parametre akustičke analize glasa zadržane fonacije samoglasnika /a/ i obrađena je pomoću programa PRAAT, kojim su izračunati F0, jitter, shimmer te omjer harmoničnog i šumnog dijela spektra (HNR). Perceptivna procjena karakteristika glasa napravljena je pomoću skale GRBAS. Za bolesnikovu samoprocjenu kvalitete glasa korištena je hrvatska verzija upitnika Indeks vokalnih teškoća (VHI). Uspoređivane su vrijednosti navedenih parametara prije i nakon završetka logopedskoga terapijskog postupka.
Frekvencija fonacije statistički se značajno smanjila (p < 0,0001) po provođenju terapije sa 209,16 (± 8,80) Hz na 132,32(± 7,48) Hz. Usporedba ostalih parametara akustičke analize glasa (jitter, shimmer te omjer harmoničnog i šumnog dijela spektra) prije i nakon terapije također pokazuju statistički značajno smanjenje. Rezultati skale GRBAS i upitnika VHI po terapiji pokazuju statistički značajno smanjenje.
Akustička i perceptivna analiza glasa adekvatne su metode za potpunu analizu karakteristika glasa bolesnika s puberfonijom te za procjenu učinka logopedske terapije na promjene karakteristika glasa. Glasovna terapija je iznimno učinkovita u liječenju puberfonije i smatra se metodom izbora liječenja.
Constructional practice has shown that structure-borne sound transmission through joints can signally reduce airborne sound insulation in buildings. Vibration transmission coefficient evaluates this ...reduction in design calculations. In this article sound transmission through joints in framed buildings is investigated. Rooms in framed buildings are shaped by walls and ceilings connected to columns. Several walls could be connected to each column in a building plan. Such joints are modelled like idealised plate-beam-plate junctions. Examining vibration transmission through these junctions, the influence of a column must be estimated. The column will resist forces and moments applied by the connected walls. The aim of the paper is to evaluate how various properties of walls and columns influence the vibration transmission loss at joints of buildings. The results are compared with the results of similar junctions without columns.
Authors are well known and highly recognized by the "acoustic echo and noise community." Presents a detailed description of practical methods to control echo and noise Develops a statistical theory ...for optimal control parameters and presents practical estimation and approximation methods
Outlines advances in dynamic, cognitive, and ecological investigations of auditory perception and ties this work to findings in more traditional areas of psychoacoustics. This book examines basic ...psychoacoustics from a more cognitive and ecological perspective. It provides coverage including both basic and applied research in auditory perception.
This paper presents the most important results from the eponymous doctoral dissertation. Research that was carried out as a part of the doctoral thesis was aimed at investigating the possibility for ...applying fractal theory to characterize and quantify texture of the room impulse response. The results throw a new light on this topic and confirm the applicability of multifractal analysis for describing the room impulse response. The results also show the possibility of applying multifractals for addressing other open issues in the room acoustics, such as diffuseness, detection of early reflections and classification of rooms.
Surface acoustic wave (SAW) devices are recognized for their versatility and efficiency in controlling and processing electrical signals. This has resulted in a multitude of device concepts for a ...wide range of signal processing functions, such as delay lines, filters, resonators, pulse compressors, convolvers, and many more. As SAW technology has found its way into mass market products such as TV receivers, pagers, keyless entry systems and cellular phones, the production volume has risen to millions of devices produced every day. At the other end of the scale, there are specialized high performance signal processing SAW devices for satellite communication and military applications, such as radar and electronic warfare.This volume, together with Volume 2, presents an overview of recent advances in SAW technology, systems and applications by some of the foremost researchers in this exciting field.
Photonic circuitry is the first-choice technological advancement recognized by the telecommunications industry. Due to the speed, strength, and clarity of signal, photonic circuits are rapidly ...replacing electronic circuits in a range of applications. Applied Photonics is a state-of-the-art reference book that describes the fundamental physical concept of photonics and examines the most current information available in the photonics field. Cutting-edge developments in semiconductors, optical switches, and solitons are presented in a readable and easily understandable style, making this volume accessible, if not essential, reading for practicing engineers and scientists.
Key Features* Introduces the concept of nonlinear interaction of photons with matters, photons, and phonons* Covers recent developments of semiconductor lasers and detectors in the communications field* Discusses the development of nonlinear devices, including optical amplifiers, solitons, and phase conjugators, as well as the development of photonic components, switches, interconnects, and image processing devices
In 1998 the main applications of audio DSP are high quality audio coding and the digital generation and manipulation of music signals. They share common research topics including perceptual ...measurement techniques and analysis/synthesis methods. Additional important topics are hearing aids using signal processing technology and hardware architectures for digital signal processing of audio. In all these areas the 1990s have seen a significant amount of application-oriented research.
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