This is the essential book reference for amplifier designers. Douglas Self covers all the design issues of noise, distortion, power supply rejection, protection, reliability, and layout. He describes advanced forms of compensation that give dramatically lower distortion. This edition is much expanded, and packed with new information. It is a must-have for audio power amplifier professionals and audiophiles, amateur constructors and anyone with intellectual curiosity about the struggle towards technical excellence. New to the sixth edition: The characteristics of the audio signal The principles of distortion Feedback intermodulation distortion Non-switching output stages VAS distortion explained Push-pull VAS configurations Output-inclusive compensation In addition, five amplifier design examples that illustrate important design principles are examined and measured in detail. These can be straightforwardly adapted to specific requirements. This new edition also includes a wealth of material on the XD crossover-displacement principle (invented by the author and in use by Cambridge Audio), four-stage amplifier architectures, error correction, current-mirrors, power transistors with internal sensing diodes, amplifier bridging, input-stage-common-mode distortion, amplifier stability, output stages with gain, inrush current suppression, DC servo design, thermal protection, cooling fan control, advanced line input stages, testing and safety, infrared remote control, signal activation, 12V trigger control, the history of solid-state amplifiers and much more. Simple procedures for heatsinking and power supply design are given.

The book presents a broad-scope analysis of piezoelectric electromechanical transducers and the related aspects of practical transducer design for underwater applications. It uses an energy method for analyzing transducer problems that provides the physical insight important for the understanding of electromechanical devices. Application of the method is first illustrated with transducer examples that can be modeled as systems with a single degree of freedom, (such as spheres, short cylinders, bars and flexural disks and plates made of piezoelectric ceramics). Thereupon, transducers are modeled as devices with multiple degrees of freedom. In all these cases, results of modeling are presented in the form of equivalent electromechanical circuits convenient for the calculation of the transducers' operational characteristics. Special focus is made on the effects of coupled vibrations in mechanical systems on transducer performance. The book also provides extensive coverage of acoustic radiation including acoustic interaction between the transducers. The book is inherently multidisciplinary. It provides essential background regarding the vibration of elastic passive and piezoelectric bodies, piezoelectricity, acoustic radiation, and transducer characterization. Scientists and engineers working in the field of electroacoustics and those involved in education in the field will find this material useful not only for underwater acoustics, but also for electromechanics, energy conversion and medical ultrasonics. Part I contains an introduction to the energy method illustrated with examples of one degree of freedom transducers. It is self-sufficient and can be read independently.

Contains a foreword by Jens Blauert! This book systematically details the basic principles and applications of head-related transfer function (HRTF) and virtual auditory display (VAD), and reviews the latest developments in the field, especially those from the author's own state-of-the-art research group. Head-Related Transfer Function and Virtual Auditory Display covers binaural hearing and the basic principles, experimental measurements, computation, physical characteristics analyses, filter design, and customization of HRTFs. It also details the principles and applications of VADs, including headphone and loudspeaker-based binaural reproduction, virtual reproduction of stereophonic and multi-channel surround sound, binaural room simulation, rendering systems for dynamic and real-time virtual auditory environments, psychoacoustic evaluation and validation of VADs, and a variety of applications of VADs. This guide provides all the necessary knowledge and latest results for researchers, graduate students, and engineers who work in the field of HRTF and VAD.

This book is a study of the workings of dynamic loudspeakers and dynamically forced vibration. With its wealth of practical observations and real-life examples, this work will prove invaluable to the practicing motor design or loudspeaker design engineer, as well as researchers and students in electroacoustics. The book is based on a lifetime's accumulated knowledge by acclaimed speaker designer William H. (Bill) Watkins. It differs from the usual tone of most technical books on this subject by initially presenting, and analyzing in full, the function of each key parameter of a reference dynamic loudspeaker. Each parameter's value is then calculated and also confirmed via lab measurements to vividly illustrate all energy-transduction facets of loudspeaker operation and the forced vibration. This presentation style makes the analysis both more engaging, intuitive, and easier to comprehend compared to most previous works in the field. The principles of this book apply to all direct reciprocating motors, not just those in a dynamic loudspeaker. Unique to the book is an entire chapter dedicated to the discussion of back-EMF voltage, discussed from several technical points of view and analyzed in depth as related to the dynamic transfer of energy between the mechanical and electrical domains. Another unique feature is a detailed discussion of Watkins' patented dual-motor concept to achieve high dynamic speaker performance in the region of its low-frequency resonance.

‘Fun, festive and fabulous. A story that sparkles like Christmas snow.’ MILLY JOHNSON ‘A page-turner’ – Woman’s Weekly When Sky Terran returns to the village of Middledip after losing the job she loves, she anticipates a quiet Christmas getting used to her new life. However, the annual street decoration competition is coming up and this year, the residents of Winter Street are determined to win. As she is pulled into the preparations, Sky quickly grows to love the quirky, tight-knit community she is now part of. Including the extremely handsome Daz, who soon becomes more than just a friendly neighbour. But when Daz’s ex turns up determined to win him back and it seems he might not be the man Sky thought he was, she remembers how much allowing people into her life – and heart – can hurt. As the snow falls, will she and Daz find a way through – and help win a Christmas victory for Winter Street? A gorgeously festive novel about love, family and the power of forgiveness from Sunday Times bestseller Sue Moorcroft, perfect for fans of Sarah Morgan and Phillipa Ashley. Readers are already falling in love with A White Christmas on Winter Street! ‘Love this author, loved the characters, and the storyline was lovely. All set in a snowy landscape – what more could you ask for?’ ⭐⭐⭐⭐⭐ ‘Festive, feel-good and heartwarming from beginning to end. Curl up with your hot chocolate and enjoy being transported.’ ⭐⭐⭐⭐⭐ ‘What is there not to like in this book? Christmas lights, an old house, snow and happiness. Absolutely love it.’ ⭐⭐⭐⭐⭐ ‘Every time I read a new book by Sue Moorcroft I think, this is the best book she has written! It was the same after finishing A White Christmas on Winter Street.’ ⭐⭐⭐⭐⭐ ‘A fantastic return to Middledip where Christmas is always a magical time.’ ⭐⭐⭐⭐⭐ ‘Wow, wow, wow! I absolutely adored this book, it's the perfect Christmas tale.’ ⭐⭐⭐⭐⭐ ‘I didn't want the story to end!’ ⭐⭐⭐⭐⭐ ‘I REALLY loved this book, a gorgeous read.’ ⭐⭐⭐⭐⭐

Presents recent research on metabolism and the health effects of polyphenols Consumer interest in the health benefits of many phenolic compounds found in plant foods and derivatives has grown considerably in recent years, giving rise to an increased demand for functional foods. Although preclinical and observational studies have promoted the protective properties of polyphenols for a range of chronic diseases, evidence has shown that most dietary polyphenols have little bioavailability. Once ingested, most of them are metabolized by either the intestinal enzymes or by the gut microbiota and then undergo extensive phase-II metabolism reaching significant concentrations of conjugated metabolites. They remain in the systemic circulation and target systemic tissues where trigger biological effects. The polyphenol-derived metabolites produced in humans are dependent upon the composition of the gut microbiota and the subject genetics. Thus all the metabolites do not show the same biological activity in different individuals. To fully understand the health effects of polyphenols, further clinical investigations are required. Dietary Polyphenols describes the latest findings on the polyphenol metabolism and reviews the current evidence on their health effects and that of their bioavailable metabolites. Emphasizing the importance of interindividual variability and the critical role of gut microbiota, this authoritative volume features contributions from recognized experts in the field, exploring specific families of extractable and non-extractable phenolic compounds that exhibit potential health effects. Topics include structural diversity of polyphenols and distribution in foods, bioavailability and bioaccessibility of phenolics, metabolism, and gastrointestinal absorption of various metabolites and their health effects. This comprehensive volume: Discusses the bioavailability, bioaccessibility, pharmacokinetics studies, and microbial metabolism of different groups of phenolic compounds Examines the interaction between polyphenols and gut microbiota Describes analytical methods for identifying and quantifying polyphenols in foods and biological samples Reviews recent epidemiological and clinical intervention studies showing protective effects of polyphenols Dietary Polyphenols: Metabolism and Health Effects is an important resource for scientists working in the area of dietary polyphenols and health effects, microbiota, and their interaction with other nutritional compounds, and for health professionals, nutritionists, dieticians, and clinical researchers with interest in the role of polyphenols in the prevention and treatment of chronic diseases.

Rock masses comprise systems of discontinuities developed by tectonic action or diagenesis, and occasionally imposed by excavation, which bound blocks of intact rock. Fluid flow is determined by distribution of the discontinuities and by the way in which their apertures respond to natural and imposed stress fields in the rock masses.

1) Includes exemplary MATLAB codes 2) Provides a comprehensive foundation in Fourier methods, essential for a mathematical approach to engineering 3) Applies MFS to hot topics in the field: multi-domain, multi- physics, and multi-scale characteristics 4) Applies Fourier method to structural vibrations, acoustics and vibro-acoustic 5) Aids engineers in solving boundary value problems and differential equations

The second edition of Predicting Outdoor Sound is an up-to-date reference on the propagation of sound close to the ground and its prediction. New content includes comparisons between predictions and data for road traffic, railway and wind turbine noise; descriptions of source characteristics in the HARMONOISE model; propagation over rough seas, parallel low walls, and lattices; outlines of numerical methods; gabion (caged stones) and sonic crystal noise barriers; meteorological effects on noise barrier performance; and the prediction requirements for auralization. The book brings together relevant theories, prediction schemes, and data, thereby providing a basis for determining what model or scheme might be applicable for any situation. It also offers a background on useful analytical approximations and the restrictions, as well as difficulties and limitations associated with engineering prediction schemes. The text should be of considerable interest to researchers in outdoor sound propagation and, more generally, it should provide a comprehensive primer on the topic for lecturers, consultants and students in acoustics and noise control.

- A comprehensive reference guide on the topic of sound reinforcement, suitable for both students and professionals - Covers a wide variety of fields of application, include sports venues, religious venues, corporate environments, cinemas and more. - Represents an opportunity to solidify our offering in the area of sound reinforcement

Finding Your Career in the Modern Audio Industry equips the reader with the skills they need to turn an interest in audio, sound, or music technology into a career. This book provides insight for aspiring professionals seeking audio-related opportunities in entertainment, technology, education, and more. In the audio industry, there is typically a gap between those in-training and those with professional (and financially sustainable) careers. This book bridges the information gap, offering practical and real-world advice to those in this volatile stage of their career. Including 70+ interviews with professionals from over 20 countries, Finding Your Career in the Modern Audio Industry offers insight into how others (across the industry and the world) have applied entrepreneurial thinking, problem-solving, and creative solutions to build their careers. Including international case studies and interviews with diverse professionals, Finding Your Career in the Modern Audio Industry is essential reading for anyone taking their first steps into an audio-related field.

This book is about recent research in the area of profiling humans from their voice, which seeks to deduce and describe the speaker's entire persona and their surroundings from voice alone. It covers several key aspects of this technology, describing how the human voice is unique in its ability to both capture and influence the human persona -- how, in some ways, voice is more potent and valuable then DNA and fingerprints as a metric, since it not only carries information about the speaker, but also about their current state and their surroundings at the time of speaking. It provides a comprehensive review of advances made in multiple scientific fields that now contribute to its foundations. It describes how artificial intelligence enables mechanisms of discovery that were not possible before in this context, driving the field forward in unprecedented ways. It also touches upon related and relevant challenges posed by voice disguise and other mechanisms of voice manipulation. The book acts as a good resource for academic researchers, and for professional agencies in many areas such as law enforcement, healthcare, social services, entertainment etc.

1) Provides a complete description of novel noise-controlling casing approaches 2) Presents solutions to noise pollution and high energy consumption 3) Enables the reader to choose from a range of control strategies suited to the device needs 4) Offers a wide range of applications, from household devices to cars and aircraft 5) Details software implementation methods to reduce the computational load

This book provides an introduction to Acoustic Emission Testing and its applications to different materials like concrete, steel, ceramics, geotechnical materials, polymers, biological structures and wood. Acoustic Emission Techniques (AET) techniques have been studied in engineering for a long time. The techniques are applied more and more to practical investigations and are more and more standardized in codes. This is because the degradation of structures due to ageing urgently demand for maintenance and rehabilitation of structures in service. It results in the need for the development of advanced and efficient inspection techniques. In mechanical engineering and concerning the monitoring of machines and mechanical components, AE is a widely accepted observing deterioration in the frame of structural health monitoring. The advantages of AE like sensitivity, damage localization potential, non-intrusive nature as well as developments in signal analysis and data transmission allow applications that could not be considered decades ago. As such, AE techniques draw great attention to diagnostic applications and in material testing. This book covers all levels from the description of AE basics for AE beginners (level of a student) to sophisticated AE algorithms and applications to real large-scale structures as well as the observation of the cracking process in laboratory specimen to study fracture processes. This book has proved its worth over the past twelve years. Now in its second edition, it will be a resource that sets the standard and equips readers for the future. All chapters from the 1st edition have been updated and rewritten and eight extra chapters (e.g also regarding AE tomography, AE in plate-like structures and AE for investigations of hardening of fresh concrete) have been added.

Artificial Intelligence Techniques in IoT Sensor Networks is a technical book which can be read by researchers, academicians, students and professionals interested in artificial intelligence (AI), sensor networks and Internet of Things (IoT). This book is intended to develop a shared understanding of applications of AI techniques in the present and near term. The book maps the technical impacts of AI technologies, applications and their implications on the design of solutions for sensor networks. This text introduces researchers and aspiring academicians to the latest developments and trends in AI applications for sensor networks in a clear and well-organized manner. It is mainly useful for research scholars in sensor networks and AI techniques. In addition, professionals and practitioners working on the design of real-time applications for sensor networks may benefit directly from this book. Moreover, graduate and master's students of any departments related to AI, IoT and sensor networks can find this book fascinating for developing expert systems or real-time applications. This book is written in a simple and easy language, discussing the fundamentals, which relieves the requirement of having early backgrounds in the field. From this expectation and experience, many libraries will be interested in owning copies of this work.

This book provides a concise and up-to-date overview of environmental noise control issues, utilizing specific case studies from India to help explore noise mapping and monitoring, impact analysis, and policy, among other relevant topics. The book provides an extensive review of recent studies, including references, and describes the latest noise monitoring structures. It also addresses heretofore under-emphasized topics, including but not limited to acoustic metrology, Multi Attribute Decision Making (MADM) techniques, and sound insulation utilizing passive control strategies.

- Practical overview of live audio entertainment, including real-world examples, interviews and tips. - Includes insights from professionals in multiple parts of the live audio sector, as well as individuals at different stages in their careers - Opportunity to update our aging live audio books, as well as to offer a business perspective which our current books lack

The most up-to-date CTS exam study system-available exclusively from McGraw-Hill Education and AVIXA Press Published with AVIXA, the Audiovisual and Integrated Experience Association, this fully updated exam guide offers comprehensive coverage of all objectives for the 2018 release of the CTS exam. The book thoroughly explains new IT security, networking, and business topics. CTS Certified Technical Specialist Exam Guide, Third Edition features learning objectives at the beginning of each chapter, best practices, checklists, diagrams, photos, chapter review questions with in-depth answer explanations, and a full-color insert. Designed to help you pass the CTS exam with ease, this authoritative resource also serves as an essential on-the-job reference for AV professionals. *Offers 100% coverage of every topic on the Certified Technical Specialist exam*Electronic content includes an online official practice exam from AVIXA*200+ photos and illustrations reinforce key AV technology concepts throughout

This guide to estimating uncertainties in the measurement, prediction and assessment of noise and vibration applies across environmental noise and vibration, occupational noise and vibration exposure, and building and architectural acoustics. The book collates information from the various Standards and from research, with explanation, examples and case studies. It enables estimation of uncertainty in the measurement and prediction of acoustic quantities, suitable for use in environmental impact and occupational exposure assessments. It is for acoustic consultants, mechanical and building service engineers, architect and building professionals and environmental health officers. Bob Peters worked for more than forty years in acoustics and noise control - teaching, research, consultancy. He was a principal acoustic consultant with Applied Acoustic Design, a senior research fellow at London South Bank University, and a tutor on Institute of Acoustics distance learning courses.