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Theory And Applications Of Spherical Microphone Array Processing

RRP $354.99

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This book presents the signal processing algorithms that have been developed to process the signals acquired by a spherical microphone array. Spherical microphone arrays can be used to capture the sound field in three dimensions and have received significant interest from researchers and audio engineers. Algorithms for spherical array processing are different to corresponding algorithms already known in the literature of linear and planar arrays because the spherical geometry can be exploited to great beneficial effect.

The authors aim to advance the field of spherical array processing by helping those new to the field to study it efficiently and from a single source, as well as by offering a way for more experienced researchers and engineers to consolidate their understanding, adding either or both of breadth and depth. The level of the presentation corresponds to graduate studies at MSc and PhD level.

This book begins with a presentation of some of the essential mathematical and physical theory relevant to spherical microphone arrays, and of an acoustic impulse response simulation method, which can be used to comprehensively evaluate spherical array processing algorithms in reverberant environments.

The chapter on acoustic parameter estimation describes the way in which useful descriptions of acoustic scenes can be parameterized, and the signal processing algorithms that can be used to estimate the parameter values using spherical microphone arrays. Subsequent chapters exploit these parameters including in particular measures of direction-of-arrival and of diffuseness of a sound field.

The array processing algorithms are then classified into two main classes, each described in a separate chapter. These are signal-dependent and signal-independent beamforming algorithms. Although signal-dependent beamforming algorithms are in theory able to provide better performance compared to the signal-independent algorithms, they are currently rarely used in practice. The main reason for this is that the statistical information required by these algorithms is difficult to estimate. In a subsequent chapter it is shown how the estimated acoustic parameters can be used in the design of signal-dependent beamforming algorithms. This final step closes, at least in part, the gap between theory and practice.


Cell Phone Contract Breaker

RRP $18.99

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Are you tired of your current cell phone carrier? Want to get out of the contract without an early termination fee and switch to a better carrier without a contract? Now there might be a way to do it and you can learn about it in this book. Are you getting what you bargained for in your cell phone service? Are you getting dropped calls? Have you determined that your service is just too expensive for you. Getting sudden bill increases? Are you frustrated? Want to move to a more reliable lower cost carrier. Good news. Carriers often breach contracts by making changes without your permission. That is your opportunity to get out of the contract and switch to another carrier you like.


How To Start And Run A Telephone Answering Service

RRP $13.99

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Have you ever thought about starting and running your own call answering service? But are just not sure where / how to start? Author, Lisa Newton can guide you through the process. You don't have to source the call centre, hire the equipment and recruit the telephonists all by yourself - there is an easier and quicker way. This book explains how you can start and run a telephone answering service quickly & easily, how to find clients and how to grow the business. Get 20% off the online 'how to start your own telephone answering service course' using this link: https://www.udemy.com/how-to-start-and-run-a-telephone-answering-service-business/?couponCode=TELAMZN20



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