I cannot praise this book too highly it is undoubtedly now the benchmark text in this area, and is an absolute essential for every audiologist and student. Graham Sutton, International Journal of Radiology, Vol. 41, No. 6, 2002
One of the best textbooks I have ever used...written by a researcher with a stellar reputation [who is also] an expert on the clinical aspects of the field...packed with information from both a theoretical and practical perspective...makes difficult concepts comprehensible...from an instructors point of view, it is a sheer delight. Adrienne Rubenstein, PhD, Professor, Department of Speech Communication Arts and Sciences, Brooklyn College, New York
Key Features:Completely revised to reflect the research and technological advances of the last decadeNew chapters on directional microphones and the latest digital signal processing strategies Extensive coverage of all aspects of open-canal, thin-tube hearing aids Practical tips, tables, and procedures designed to be pinned on the walls of clinicsEach cross-referenced chapter builds on the previous chapters
Hearing Aids, Second Edition, is a book within a book:Each chapter has a one-page synopsis that captures the key concepts of each topicThe material that students most need is contained in marked paragraphs that flow after each other to form a coherent thin book inside the larger book Intervening additional paragraphs add satisfying depth
Written, comprehensively referenced, and extensively reviewed by leaders in the field, this book is ideal as a core graduate text as well as a standard reference for clinicians.
The authors provide an outline of acoustics and the human voice, before going on to cover ways in which voice users - from professional and amateur singers and performers, through lawyers, to school teachers - the largest group reporting to clinics with vocal problems - can improve vocal efficiency, regardless of location, and vocal health. Also covered are methods of amplification, whether through microphones, or simply by posture or stance and best methods for sound recording.
New to the third edition:
This book facilitates the reader’s understanding and development of speech and audio techniques based on our knowledge of the auditory perceptual mechanisms by introducing the physical, signal-processing and psychophysical background to communication acoustics. It then provides a detailed explanation of sound technologies where a human listener is involved, including audio and speech techniques, sound quality measurement, hearing aids and audiology.
Key features:Explains perceptually-based audio: the authors take a detailed but accessible engineering perspective on sound and hearing with a focus on the human place in the audio communications signal chain, from psychoacoustics and audiology to optimizing digital signal processing for human listening. Presents a wide overview of speech, from the human production of speech sounds and basics of phonetics to major speech technologies, recognition and synthesis of speech and methods for speech quality evaluation. Includes MATLAB examples that serve as an excellent basis for the reader’s own investigations into communication acoustics interaction schemes which intuitively combine touch, vision and voice for lifelike interactions.
Key features:Reviews all the main noise robust ASR approaches, including signal separation, voice activity detection, robust feature extraction, model compensation and adaptation, missing data techniques and recognition of reverberant speech. Acts as a timely exposition of the topic in light of more widespread use in the future of ASR technology in challenging environments. Addresses robustness issues and signal degradation which are both key requirements for practitioners of ASR. Includes contributions from top ASR researchers from leading research units in the field
Key Features: Included throughout the texts are short paragraphs identified as "Technical Tips", "Key Concepts", "Things to Remember", "Points to Ponder", and "On the Soapbox". Interesting tidbits of information not quite relevant enough to include in the chapters, but yet too good to toss aside, are featured in the back of the book as "Endnotes". Infused with humor! Written in an accessible and easy-to-ready style to be welcoming to university faculty and their students by including not just reference information, but tools supported by research and clinical experience, presented in a way that was accessible to clinical students with little experience in the field. A handy companion for busy clinicians--a friendly resource where they can quickly find critical information needed for the next patient. Contains enough depth that even the serious hearing aid researcher would also find many pearls.
With a clear and simple style Howard and Angus walk you through the theory- the science of sound engineering and music production, and the practical ? how to apply it to music spaces so create professional sound, using real world examples and providing audio clips and recorded sounds to work with.
Updated throughout the new edition uncovers the acoustic application for today's recording industry. The website is packed with audio clips, questions and answers, a calculation facility as well as links and resources.
Non-linear aeroacoustic modeling approach is used to estimate the important fine-structure speech events, which are not revealed by the short time Fourier transform (STFT). This aeroacostic modeling approach provides the impetus for the high resolution Teager energy operator (TEO). This operator is characterized by a time resolution that can track rapid signal energy changes within a glottal cycle.
The cepstral features like linear prediction cepstral coefficients (LPCC) and mel frequency cepstral coefficients (MFCC) are computed from the magnitude spectrum of the speech frame and the phase spectra is neglected. To overcome the problem of neglecting the phase spectra, the speech production system can be represented as an amplitude modulation-frequency modulation (AM-FM) model. To demodulate the speech signal, to estimation the amplitude envelope and instantaneous frequency components, the energy separation algorithm (ESA) and the Hilbert transform demodulation (HTD) algorithm are discussed.
Different features derived using above non-linear modeling techniques are used to develop a speaker identification system. Finally, it is shown that, the fusion of speech production and speech perception mechanisms can lead to a robust feature set.