Sixteen-year-old, music- and sound design-obsessed Drea doesn't have friends. She has, as she's often reminded, issues. Drea's mom and a rotating band of psychiatrists have settled on "a touch of Asperger's." Having just moved to the latest in a string of new towns, Drea meets two other outsiders. And Naomi and Justin seem to actually like Drea. The three of them form a band after an impromptu, Portishead-comparison-worthy jam after school. Justin swiftly challenges not only Drea's preference for Poe over Black Lab but also her perceived inability to connect with another person. Justin, against all odds, may even like like Drea. It's obvious that Drea can't hide behind her sound equipment anymore. But just when she's found not one but two true friends, can she stand to lose one of them? Harmonic Feedback is a 2011 Bank Street - Best Children's Book of the Year.

The essential introduction to the principles and applications of feedback systems—now fully revised and expanded This textbook covers the mathematics needed to model, analyze, and design feedback systems. Now more user-friendly than ever, this revised and expanded edition of Feedback Systems is a one-volume resource for students and researchers in mathematics and engineering. It has applications across a range of disciplines that utilize feedback in physical, biological, information, and economic systems. Karl Åström and Richard Murray use techniques from physics, computer science, and operations research to introduce control-oriented modeling. They begin with state space tools for analysis and design, including stability of solutions, Lyapunov functions, reachability, state feedback observability, and estimators. The matrix exponential plays a central role in the analysis of linear control systems, allowing a concise development of many of the key concepts for this class of models. Åström and Murray then develop and explain tools in the frequency domain, including transfer functions, Nyquist analysis, PID control, frequency domain design, and robustness. Features a new chapter on design principles and tools, illustrating the types of problems that can be solved using feedback Includes a new chapter on fundamental limits and new material on the Routh-Hurwitz criterion and root locus plots Provides exercises at the end of every chapter Comes with an electronic solutions manual An ideal textbook for undergraduate and graduate students Indispensable for researchers seeking a self-contained resource on control theory

The extensive use of little known electronic principles provides something like the Science of Electronics supplementing the Art of Electronics without involvement of too much theory. Whereas art can only be acquired by doing, the knowledge provided by science can be acquired from books. The ready availability of integrated circuits for practically any application reduces the art of electronics to the art of interfacing these integrated components. The practical knowledge required for that art can only be acquired by doing and not by reading. However, it takes a lot of knowledge to select the best integrated component for achieving a specific goal. Such knowledge is provided in this book. By using a holistic approach in the understanding of the various circuits and by taking ample advantage of the duality between the electrical quantities voltage and current, the understanding of the properties of electronic circuits is made easier. Besides, this approach reduces the amount of mathematics needed for a deeper understanding. Thus, this book is appropriate for scholars at the advanced undergraduate level. In particular, the important aspects of positive and negative feedback in circuits are presented in a compact way by introducing the reverse closed-loop-gain. It is quite clear that a single book cannot cover all aspects of both analog and digital electronics, the latter comprising all circuits needed for data manipulation in digital computers – which is a field in itself.

The book brings together the following issues: Theory of deterministic, random and discrete signals reproducible in oscillatory systems of generators; Generation of periodic signals with a specified spectrum, harmonic distortion factor and random signals with specified probability density function and spectral density; Synthesis of oscillatory system structures; Analysis of oscillatory systems with non-linear elements and oscillation amplitude stabilization systems; It considers the conditions and criteria of steady-state modes in signal generators on active four-pole elements with unidirectional and bidirectional transmission of signals and on two-pole elements; analogues of Barkhausen criteria; Optimization of oscillatory system structures by harmonic distortion level, minimization of a frequency error and set-up time of the steady state mode; Theory of construction of random signal generators; Construction of discrete and digital signal generators; Practical design of main units of generators; Practical block diagrams of both analog and digital signal generators.

June issues, 1941-44 and Nov. issue, 1945, include a buyers' guide section.

Based on his work at Soundcraft Electronics, Douglas Self shows how to design and build audio power amplifiers using the most up to date components and technologies.

In this book, David Temperley addresses a fundamental question about music cognition: how do we extract basic kinds of musical information, such as meter, phrase structure, counterpoint, pitch spelling, harmony, and key from music as we hear it? Taking a computational approach, Temperley develops models for generating these aspects of musical structure. The models he proposes are based on preference rules, which are criteria for evaluating a possible structural analysis of a piece of music. A preference rule system evaluates many possible interpretations and chooses the one that best satisfies the rules. After an introductory chapter, Temperley presents preference rule systems for generating six basic kinds of musical structure: meter, phrase structure, contrapuntal structure, harmony, and key, as well as pitch spelling (the labeling of pitch events with spellings such as A flat or G sharp). He suggests that preference rule systems not only show how musical structures are inferred, but also shed light on other aspects of music. He substantiates this claim with discussions of musical ambiguity, retrospective revision, expectation, and music outside the Western canon (rock and traditional African music). He proposes a framework for the description of musical styles based on preference rule systems and explores the relevance of preference rule systems to higher-level aspects of music, such as musical schemata, narrative and drama, and musical tension.

Each generation yielded growths in brightness and time resolution that were unimaginable just a few years earlier. In particular, the progression from the 3rd to 4th generation is a true revolution; the peak brilliance of coherent soft and hard x-rays has increased by 7-10 orders of magnitude, and the image resolution has reached the angstrom (1 [symbol] = 10-10 meters) and femto-second (1 fs = 10-15 second) scales. These impressive capabilities have fostered fundamental scientific advances and led to an explosion of numerous possibilities in many important research areas including material science, chemistry, molecular biology and the life sciences. Even more remarkably, this field of photon source invention and development shows no signs of slowing down. Studies have already been started on the next generation of x-ray sources, which would have a time resolution in the atto-second (1 as = 10-18 second) regime, comparable to the time of electron motion inside atoms.