Basic Of Sound And Hearing

Author : Robert Duncan Luce
Publisher : Psychology Press
Page : 360 pages
File Size : 53,9 Mb
Release : 1993
Category : Ear
ISBN : UVA:X002281696

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Sound & Hearing by Robert Duncan Luce Pdf

The major aim of this book is to introduce the ways in which scientists approach and think about a phenomenon -- hearing -- that intersects three quite different disciplines: the physics of sound sources and the propagation of sound through air and other materials, the anatomy and physiology of the transformation of the physical sound into neural activity in the brain, and the psychology of the perception we call hearing. Physics, biology, and psychology each play a role in understanding how and what we hear. The text evolved over the past decade in an attempt to convey something about scientific thinking, as evidenced in the domain of sounds and their perception, to students whose primary focus is not science. It does so using a minimum of mathematics (high school functions such as linear, logarithmic, sine, and power) without compromising scientific integrity. A significant enrichment is the availability of a compact disc (CD) containing over 20 examples of acoustic demonstrations referred to in the book. These demonstrations, which range from echo effects and filtered noise to categorical speech perception and total more than 45 minutes, are invaluable resources for making the text come alive.

Author : National Research Council,Division of Behavioral and Social Sciences and Education,Board on Behavioral, Cognitive, and Sensory Sciences,Committee on Disability Determination for Individuals with Hearing Impairments
Publisher : National Academies Press
Page : 321 pages
File Size : 44,9 Mb
Release : 2004-12-17
Category : Social Science
ISBN : 9780309092968

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Hearing Loss by National Research Council,Division of Behavioral and Social Sciences and Education,Board on Behavioral, Cognitive, and Sensory Sciences,Committee on Disability Determination for Individuals with Hearing Impairments Pdf

Millions of Americans experience some degree of hearing loss. The Social Security Administration (SSA) operates programs that provide cash disability benefits to people with permanent impairments like hearing loss, if they can show that their impairments meet stringent SSA criteria and their earnings are below an SSA threshold. The National Research Council convened an expert committee at the request of the SSA to study the issues related to disability determination for people with hearing loss. This volume is the product of that study. Hearing Loss: Determining Eligibility for Social Security Benefits reviews current knowledge about hearing loss and its measurement and treatment, and provides an evaluation of the strengths and weaknesses of the current processes and criteria. It recommends changes to strengthen the disability determination process and ensure its reliability and fairness. The book addresses criteria for selection of pure tone and speech tests, guidelines for test administration, testing of hearing in noise, special issues related to testing children, and the difficulty of predicting work capacity from clinical hearing test results. It should be useful to audiologists, otolaryngologists, disability advocates, and others who are concerned with people who have hearing loss.

Author : Tony L. Sahley,Frank E. Musiek
Publisher : Plural Publishing
Page : 705 pages
File Size : 52,6 Mb
Release : 2015-01-01
Category : Medical
ISBN : 9781597569293

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Basic Fundamentals in Hearing Science by Tony L. Sahley,Frank E. Musiek Pdf

Author : professor Ibrahim elnoshokaty
Publisher : ibrahim elnoshokaty
Page : 1018 pages
File Size : 41,7 Mb
Release : 2022-10-30
Category : Science
ISBN : 8210379456XXX

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basics of sound and hearing by professor Ibrahim elnoshokaty Pdf

In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain.[1] Only acoustic waves that have frequencies lying between about 20 Hz and 20 kHz, the audio frequency range, elicit an auditory percept in humans. In air at atmospheric pressure, these represent sound waves with wavelengths of 17 meters (56 ft) to 1.7 centimeters (0.67 in). Sound waves above 20 kHz are known as ultrasound and are not audible to humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges. Acoustics is the interdisciplinary science that deals with the study of mechanical waves in gasses, liquids, and solids including vibration, sound, ultrasound, and infrasound. A scientist who works in the field of acoustics is an acoustician, while someone working in the field of acoustical engineering may be called an acoustical engineer.[2] An audio engineer, on the other hand, is concerned with the recording, manipulation, mixing, and reproduction of sound. Applications of acoustics are found in almost all aspects of modern society, subdisciplines include aeroacoustics, audio signal processing, architectural acoustics, bioacoustics, electro-acoustics, environmental noise, musical acoustics, noise control, psychoacoustics, speech, ultrasound, underwater acoustics, and vibration.

Author : Dr. ibrahim elnoshokaty
Publisher : ibrahim elnoshokaty
Page : 110 pages
File Size : 43,5 Mb
Release : 2024-05-18
Category : Science
ISBN : 8210379456XXX

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BASICS OF SOUND AND HEARING by Dr. ibrahim elnoshokaty Pdf

Everyday your world is filled with a multitude of sounds. Sound can let you communicate with others or let others communicate with you. It can be a warning of danger or simply an enjoyable experience. Some sounds can be heard by dogs or other animals but cannot be heard by humans. The ability the hear is definitely an important sense, but people who are deaf are remarkable in the ways that they can compensate for their loss of hearing All of the sounds you can hear from plucking the strings above occur because mechanical energy produced by your computer speaker was transferred to your ear through the movement of atomic particles. Sound is a pressure disturbance that moves through a medium in the form of mechanical waves. When a force is exerted on an atom, it moves from its rest or equilibrium position and exerts a force on the adjacent particles. These adjacent particles are moved from their rest position and this continues throughout the medium. This transfer of energy from one particle to the next is how sound travels through a medium. The words "mechanical wave" are used to describe the distribution of energy through a medium by the transfer of energy from one particle to the next. Waves of sound energy move outward in all directions from the source. Your vocal chords and the strings on a guitar are both sources which vibrate to produce sound waves. Without energy, there would be no sound. Let's take a closer look at sound waves

Author : prof.ibrahim elnoshokaty
Publisher : ibrahim elnoshokaty
Page : 200 pages
File Size : 54,8 Mb
Release : 2020-09-29
Category : Science
ISBN : 8210379456XXX

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Basic of sound and hearing: Part 3 Acoustic Theory by prof.ibrahim elnoshokaty Pdf

acoustics thoary is a branch of physics that deals with the study of mechanical waves in gases, liquids, and solids including topics such as vibration, sound, ultrasound and infrasound. A scientist who works in the field of acoustics is an acoustician while someone working in the field of acoustics technology may be called an acoustical engineer. The application of acoustics is present in almost all aspects of modern society with the most obvious being the audio and noise control industries. Hearing is one of the most crucial means of survival in the animal world and speech is one of the most distinctive characteristics of human development and culture. Accordingly, the science of acoustics spreads across many facets of human society—music, medicine, architecture, industrial production, warfare and more. Likewise, animal species such as songbirds and frogs use sound and hearing as a key element of mating rituals or marking territories. Art, craft, science and technology have provoked one another to advance the whole, as in many other fields of knowledge

Author : prof.Ibrahim elnoshokaty
Publisher : ibrahim elnoshokaty
Page : 276 pages
File Size : 40,6 Mb
Release : 2020-11-19
Category : Science
ISBN : 8210379456XXX

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Basic of sound and hearing Part 4 building acoustics by prof.Ibrahim elnoshokaty Pdf

Building acoustics is the science of controlling noise in buildings. This includes the minimization of noise transmission from one space to another and the control of the characteristics of sound within spaces themselves. Building acoustics are an important consideration in the design, operation and construction of most buildings, and can have a significant impact on health and wellbeing, communication and productivity. They can be particularly significant in spaces such as concert halls, recording studios, lecture theatres, and so on, where the quality of sound and its intelligibility are very important. Building acoustics can be influenced by: The geometry and volume of a space. The sound absorption, transmission and reflection characteristics of surfaces enclosing the space and within the space. The sound absorption, transmission and reflection characteristics of materials separating spaces. The generation of sound inside or outside the space. Airborne sound transmission. Impact noise.

Author : prof. ibrahim elnoshokaty
Publisher : ibrahim elnoshokaty
Page : 364 pages
File Size : 49,6 Mb
Release : 2024-05-18
Category : Science
ISBN : 8210379456XXX

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Basic of sound and hearing: Part 5 electroacoustics by prof. ibrahim elnoshokaty Pdf

electroacoustics This branch of acoustic engineering deals with the design of headphones, microphones, loudspeakers, sound systems, sound reproduction, and recording.[15] There has been a rapid increase in the use of portable electronic devices which can reproduce sound and rely on electroacoustic engineering, e.g. mobile phones, portable media players, and tablet computers. This term is also used for a set of electrokinetic effects that occur in heterogeneous liquids under influence of ultrasound. There is International Standard that describes such electroacoustic effects in details

Author : prof.ibrahim elnoshokaty
Publisher : ibrahim elnoshokaty
Page : 173 pages
File Size : 45,6 Mb
Release : 2024-05-18
Category : Technology & Engineering
ISBN : 8210379456XXX

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Basic of sound and hearing by prof.ibrahim elnoshokaty Pdf

Sound Propagation Sound propagates through air as a longitudinal wave. The speed of sound is determined by the properties of the air, and not by the frequency or amplitude of the sound. Sound waves, as well as most other types of waves, can be described in terms of the following basic wave phenomena.

Author : R. Duncan Luce
Publisher : Psychology Press
Page : 394 pages
File Size : 47,5 Mb
Release : 2013-10-31
Category : Language Arts & Disciplines
ISBN : 9781317759799

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Sound & Hearing by R. Duncan Luce Pdf

The major aim of this book is to introduce the ways in which scientists approach and think about a phenomenon -- hearing -- that intersects three quite different disciplines: the physics of sound sources and the propagation of sound through air and other materials, the anatomy and physiology of the transformation of the physical sound into neural activity in the brain, and the psychology of the perception we call hearing. Physics, biology, and psychology each play a role in understanding how and what we hear. The text evolved over the past decade in an attempt to convey something about scientific thinking, as evidenced in the domain of sounds and their perception, to students whose primary focus is not science. It does so using a minimum of mathematics (high school functions such as linear, logarithmic, sine, and power) without compromising scientific integrity. A significant enrichment is the availability of a compact disc (CD) containing over 20 examples of acoustic demonstrations referred to in the book. These demonstrations, which range from echo effects and filtered noise to categorical speech perception and total more than 45 minutes, are invaluable resources for making the text come alive.

Author : Charles E. Speaks
Publisher : Singular
Page : 348 pages
File Size : 45,8 Mb
Release : 1999
Category : Language Arts & Disciplines
ISBN : UVA:X004283421

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Introduction to Sound by Charles E. Speaks Pdf

This powerful text continues with the same fundamental aim as the previous two editions to not present, but to teach the fundamental concepts of acoustics to students in the speech-language and hearing science. In addition to relocating revised practice problems and answers to a newly created Course Notes and Workbook for Introduction to Sound, the third edition also introduces new features. Supplements Course Notes and Workshop for Introduction to Sound 1-56593-980-8 - 176 pages, softcover, 8 1/2 x 11

Author : Cranford, Jerry L.
Publisher : Plural Publishing
Page : 145 pages
File Size : 50,8 Mb
Release : 2007-10-01
Category : Medical
ISBN : 9781597568814

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Basics of Audiology by Cranford, Jerry L. Pdf

Basics of Audiology was developed from Dr. Cranford'’s extensive experience teaching audiology to speech-language pathology (SLP) students. Although there are multiple, established introductory texts in audiology, this text is uniquely geared to students who specifically studying speech-language pathology. The book includes all the necessary audiological principles needed for any SLP student to become competent in test assessment and the diagnosis of hearing disorders. Mastery of this text will enable the future clinician practice in a wider patient base. In addition to being useful in undergraduate training programs as a primary or supplementary text, the book will also be valuable for SLPs who have “been in the trenches” for a number of years and feel they need to have their knowledge of audiology refreshed or updated. Because the author has focused on using nontechnical or layman’s terminology in explaining the various scientific and clinical concepts/principles in this field, he also believes that parents, relatives, or significant others of hearing impaired patients will also find this book useful for understanding the problems experienced by their loved ones.

Author : Christopher Cooper
Publisher : The Rosen Publishing Group, Inc
Page : 96 pages
File Size : 40,8 Mb
Release : 2014-07-15
Category : Juvenile Nonfiction
ISBN : 9781477777671

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The Basics of Sound by Christopher Cooper Pdf

Ticking clocks, claps of thunder, the human voice—sound is anything that can be heard. Hearing sound is one thing, but understanding just how it works and what its properties are is quite another. Answering these questions and others concerning supersonic speed and breaking the sound barrier, how the human voice and ear work, and the age-old question of whether a tree falling in the forest unobserved makes any noise, this volume provides an accessible yet detailed and amply illustrated guide to the science of sound. Also included are several fun projects, which allow readers to explore in a hands-on way the nature, quality, and behavior of sound.

Author : Shyh-yuan Lee
Publisher : World Scientific
Page : 335 pages
File Size : 44,9 Mb
Release : 2020-10-16
Category : Science
ISBN : 9789811224331

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Fundamental Physics Of Sound by Shyh-yuan Lee Pdf

This is a textbook on the basic sciences of sound. It contains sufficient latest information on the subject and is divided into four parts that fit into the semester structure.The first part deals with basic Newton's second law of motion, simple harmonic oscillation, and wave properties. Newton's second law, 'the net force is equal to the rate of change of momentum,' is used to derive the speed of waves in a medium. The second part focuses on the psychoacoustics of our perception of three attributes of sound: loudness, pitch and timbre. The third part discusses the basic physics of some musical instruments and human voice. From the point of view of physics, musical instruments and human speech are similar. They are composed of a sound source and a resonator. Human ingenuity has produced various aesthetic-looking and ear-pleasing instruments for musicians to perform. Magical human evolution has also shaped our vocal folds and vocal tract so that we can dynamically change loudness, pitch, and timbre in an instant, in a manner that no other musical instrument can emulate. The fourth part includes electricity and magnetism, room acoustics, digital technology in acoustics, effects of noise on human hearing, and noise regulations for hearing protection that are relevant to sound wave production, transmission, storage, and human ear protection. Our ears are extremely sensitive. Without proper protection, loud noise including loud music can damage our ears. Government regulation and education serve as a first line of protection in working environments.This small book is comprehensible, understandable and enjoyable to all eager students.

Author : John van Opstal
Publisher : Academic Press
Page : 436 pages
File Size : 52,7 Mb
Release : 2016-03-29
Category : Science
ISBN : 9780128017258

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The Auditory System and Human Sound-Localization Behavior by John van Opstal Pdf

The Auditory System and Human Sound-Localization Behavior provides a comprehensive account of the full action-perception cycle underlying spatial hearing. It highlights the interesting properties of the auditory system, such as its organization in azimuth and elevation coordinates. Readers will appreciate that sound localization is inherently a neuro-computational process (it needs to process on implicit and independent acoustic cues). The localization problem of which sound location gave rise to a particular sensory acoustic input cannot be uniquely solved, and therefore requires some clever strategies to cope with everyday situations. The reader is guided through the full interdisciplinary repertoire of the natural sciences: not only neurobiology, but also physics and mathematics, and current theories on sensorimotor integration (e.g. Bayesian approaches to deal with uncertain information) and neural encoding. Quantitative, model-driven approaches to the full action-perception cycle of sound-localization behavior and eye-head gaze control Comprehensive introduction to acoustics, systems analysis, computational models, and neurophysiology of the auditory system Full account of gaze-control paradigms that probe the acoustic action-perception cycle, including multisensory integration, auditory plasticity, and hearing impaired