The Basics Of Sound

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.

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.

An ideal text for advanced undergraduates, the book provides the foundations needed to understand the acoustics of rooms and musical instruments as well as the basics for scientists and engineers interested in noise and vibration. The new edition contains four new chapters devoted primarily to applications of acoustical principles in everyday life: Microphones and Other Transducers, Sound in Concert Halls and Studios, Sound and Noise Outdoors; and Underwater Sound.

SOUNDCHECK THE BASICS OF SOUND AND SOUND SYSTEMS

This book is about the fundamentals of live sound engineering and is intended to supplement the curriculum for the online classes at the Production Institute (www.productioninstitute.com/students). Nonetheless, it will be invaluable for beginning sound engineers and technicians anywhere who seek to expand their knowledge of sound reinforcement on their own. Written with beginners and novices in churches and convention centers in mind, this book starts by teaching you professional terminology and the processes of creating production related documents used to communicate with other sound engineers, vendors and venues. Subjects such as Signal Path and AC (alternating current) power safety and distribution are closely examined. These two subjects are closely related to the buzzing, humming and other noise related phenomena that often plague sound reinforcement systems. Chapters include an in-depth review of both analog and digital mixing consoles, their differences and similarities, and the gain structure fundamentals associated with the proper operation of either type of mixing console. Audio dynamic processors such as compressors, limiters and noise gates and their operation are explained in detail. Audio effects like delay and reverb are examined so that you can learn the basics of "sweetening" the mix to create larger and more emotive soundscapes and achieve studio-like outcomes in a live sound environment. Advanced mixing techniques, workflow, and the conventional wisdom used by professional audio engineers are explained so you don't have to spend years trying to figure out how these processes are achieved. Last but not least, a comprehensive review of acoustic feedback, and how to eliminate it from stage monitors and main speaker systems are detailed in a step by step process. This book will be especially helpful to volunteer audio techs in houses of worship, convention centers and venues of all types. It will bridge the gap between the on-the-job training that beginners receive and the knowledge and conventional wisdom that professional sound engineers employ in their daily routine.

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.

This book presents a clear and precise treatment of the physics of sound while using a level of math suitable for readers in the speech, language, hearing and health sciences. Simple mathematics, graphics, and qualitative descriptions are demonstrated to explain wave concepts, spectrograms, intensity, and decibels.

(Book). This beginner's guide to the basics of live concert sound mixing and mic techniques is written by industry vet Jerry Slone, whose baptism-by-fire road experiences will teach you need-to-know stuff they simply don't teach in school! It provides easy-to-understand coverage aimed at the novice on topics such as: sound and hearing; microphone models, specs and techniques; mixers; equalization; amplifiers; speakers; the audio chain; schools and universities for continuing education; and much more. Ever since talent show appearances in his pre-teen years, Jerry Slone 's been the guy who got stuck hooking up the PA and trying to tweak it to make it sound better. After graduating from the Recording Industry program at Middle Tennessee State University (MTSU), he road-managed and mixed house audio for a touring band. Today, he works with acts signed to major labels.