Tag Archives: Noise

Study and Design of Differential Microphone Arrays

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Jacob Benesty, Jingdong Chen, "Study and Design of Differential Microphone Arrays"
English | 2013 | ISBN-10: 364233752X, 3642427561 | 180 pages | PDF | 6 MB

Study and Design of Differential Microphone Arrays
Microphone arrays have attracted a lot of interest over the last few decades since they have the potential to solve many important problems such as noise reduction/speech enhancement, source separation, dereverberation, spatial sound recording, and source localization/tracking, to name a few. However, the design and implementation of microphone arrays with beamforming algorithms is not a trivial task when it comes to processing broadband signals such as speech. Indeed, in most sensor arrangements, the beamformer output tends to have a frequency-dependent response. One exception, perhaps, is the family of differential microphone arrays (DMAs) who have the promise to form frequency-independent responses. Moreover, they have the potential to attain high directional gains with small and compact apertures. As a result, this type of microphone arrays has drawn much research and development attention recently. This book is intended to provide a systematic study of DMAs from a signal processing perspective. The primary objective is to develop a rigorous but yet simple theory

for the design, implementation, and performance analysis of DMAs. The theory includes some signal processing techniques for the design of commonly used first-order, second-order, third-order, and also the general Nth-order DMAs. For each order, particular examples are given on how to form standard directional patterns such as the dipole, cardioid, supercardioid, hypercardioid, subcardioid, and quadrupole. The study demonstrates the performance of the different order DMAs in terms of beampattern, directivity factor, white noise gain, and gain for point sources. The inherent relationship between differential processing and adaptive beamforming is discussed, which provides a better understanding of DMAs and why they can achieve high directional gain. Finally, we show how to design DMAs that can be robust against white noise amplification.
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Signal Processing in Noise Waveform Radar

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Kulpa Krzysztof, "Signal Processing in Noise Waveform Radar"
English | ISBN: 160807661X | 2013 | 248 pages | PDF | 8 MB

Signal Processing in Noise Waveform Radar
This book is devoted to the emerging technology of noise waveform radar and its signal processing aspects. It is a new kind of radar, which use noise-like waveform to illuminate the target. The book includes an introduction to basic radar theory, starting from classical pulse radar, signal compression, and wave radar. The book then discusses the properties, difficulties and potential of noise radar systems, primarily for low-power and short-range civil applications. The contribution of modern signal processing techniques to making noise radar practical are emphasized, and application examples are given.
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Sound and Safe: A History of Listening Behind the Wheel

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Sound and Safe: A History of Listening Behind the Wheel by Karin Bijsterveld, Eefje Cleophas, Stefan Krebs, Gijs Mom
2013 | ISBN: 0199925690 | English | 248 pages | PDF | 4 MB

Sound and Safe: A History of Listening Behind the Wheel
Do you enjoy listening to music while driving? Do you find radio traffic information indispensable? Do you like to sing along with whatever you like as you drive?

This book tells the fascinating story of how, over the course of the twentieth century, we turned automobiles from intentionally noisy contraptions into spheres of auditory privacy that make us feel sound and safe. It explains how engineers in the automotive industry found pride in making car engines quieter once they realized that noise stood for inefficiency. And, after the automobile had become a closed vehicle, it follows them as they struggled against sounds audible within the car. The book also traces how noise is linked both to fears – fears of noise-induced fatigue, fears about the danger of the car radio and drivers' attention spans – and to wants, exploring how drivers at one point actually desired to listen to their cars' engines in order to diagnose mechanical problems and how they now appreciate radio traffic information. And it suggests that their disdain for the ever-expanding number of roadside noise barriers made them long for new forms of in-car audio entertainment.

This book also allows you to peep behind the scenes of international standardization committees and automotive test benches. What did and does the automotive industry do to secure the sounds characteristic for their brands? Drawing on archives, interviews, beautiful historical automotive ads, and writing from cultural history, science and technology studies, sound and sensory studies, this book unveils the hidden history of an everyday phenomenon. It is about the sounds of car engines, tires, wipers, blinkers, warning signals, in-car audio systems and, ultimately, about how we became used to listening while driving.
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Hardening Linux by John Terpstra

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Hardening Linux by John Terpstra
English | May 11, 2004 | ISBN: 0072254971 | 404 Pages | CHM | 9 MB
Recognized Linux expert John Terpstra and security evangelist and 25-year IT industry veteran, Roberta Bragg cut through the noise to show you how to bullet proof your system before you are hacked!

Hardening Linux by John Terpstra

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F in Exams: The Very Best Totally Wrong Test Answers

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Richard Benson, "F in Exams: The Very Best Totally Wrong Test Answers"
2011 | ISBN-10: 0811878317, 1452115656 pages | EPUB, MOBI | 5 + 5 MB

F in Exams: The Very Best Totally Wrong Test Answers
"F" stands for "funny" in this perfect gift for students or anyone who has ever had to struggle through a test and needs a good laugh. Celebrating the creative side of failure in a way we can all relate to, F in Exams gathers the most hilarious and inventive test answers provided by students who, faced with a question they have no hope of getting right, decide to have a little fun instead. Whether in science (Q: What is the highest frequency noise that a human can register? A: Mariah Carey), the humanities (Q: What did Mahatma Gandhi and Genghis Khan have in common? A: Unusual names), math, or other subjects, these 250 entries prove that while everyone enjoys the spectacle of failure, it's even sweeter to see a FAIL turn into a WIN.

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Spin Squeezing and Non-linear Atom Interferometry with Bose-Einstein Condensates

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Spin Squeezing and Non-linear Atom Interferometry with Bose-Einstein Condensates
Publisher: S—ger | ISBN: 3642256368 | 2012 | PDF | 124 pages | 4 MB

Spin Squeezing and Non-linear Atom Interferometry with Bose-Einstein Condensates
Interferometry, the most precise measurement technique known today, exploits the wave-like nature of the atoms or photons in the interferometer. As expected from the laws of quantum mechanics, the granular, particle-like features of the individually independent atoms or photons are responsible for the precision limit, the shot noise limit.
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Spin Squeezing and Non-linear Atom Interferometry with Bose-Einstein Condensates

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Spin Squeezing and Non-linear Atom Interferometry with Bose-Einstein Condensates
Publisher: S—ger | ISBN: 3642256368 | 2012 | PDF | 124 pages | 4 MB

Spin Squeezing and Non-linear Atom Interferometry with Bose-Einstein Condensates
Interferometry, the most precise measurement technique known today, exploits the wave-like nature of the atoms or photons in the interferometer. As expected from the laws of quantum mechanics, the granular, particle-like features of the individually independent atoms or photons are responsible for the precision limit, the shot noise limit.
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Anticipate: The Art of Leading by Looking Ahead

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Anticipate: The Art of Leading by Looking Ahead by Rob-Jan de Jong
English | January 5, 2015 | ISBN: 0814449077 | 288 Pages | MOBI/AZW3/PDF (Converted) | 7 MB
Business schools, leadership gurus, and strategy guides agree – leaders must have a vision. But the sad truth is that most don't…or at least not one that compels, inspires, and energizes their people. How can something so essential be practiced so little in real life? Vision may sound like a rare quality, unattainable by all except a select few – but nothing could be further from the truth.

Anticipate: The Art of Leading by Looking Ahead
Anyone can expand their visionary capacity. You just need to learn how. In Anticipate, strategy and leadership expert Rob-Jan de Jong explains that to develop vision you must sharpen two key skills. The first is the ability to see things early – spotting the first hints of change on the horizon. The second is the power to connect the dots – turning those clues into a gripping story about the future of your organization and industry. Packed with stories and practices, Anticipate provides proven techniques for looking ahead and exploring many plausible futures – including the author's trademarked Future Priming process, which helps distinguish signal from noise. You will discover how to: tap into your imagination and open yourself to the unconventional; become better at seeing things early; frame the big-picture view that provides direction for the future; communicate your vision in a way that engages others and provokes action. When you anticipate change before your competitors, you create enormous strategic advantage. That's what visionaries do…and now so can you.

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