Provides a summary of current research results on the physiological and psychological effects of sound on people Covers how the operation of the hearing mechanism affects our reactions to sounds Includes research results from studies on noise sources of public concern such as transportation, public utility, and recreational sources, with emphasis on low frequency sound and infrasound Covers sounds that affect some but not others, how sounds can be controlled on a practical level, and how and what sounds are regulated Includes coverage of both positive and negative effects of sound
Provides a summary of current research results on the physiological and psychological effects of sound on people Covers how the operation of the hearing mechanism affects our reactions to sounds Includes research results from studies on noise sources of public concern such as transportation, public utility, and recreational sources, with emphasis on low frequency sound and infrasound Covers sounds that affect some but not others, how sounds can be controlled on a practical level, and how and what sounds are regulated Includes coverage of both positive and negative effects of sound
Provides a summary of current research results on the physiological and psychological effects of sound on people Covers how the operation of the hearing mechanism affects our reactions to sounds Includes research results from studies on noise sources of public concern such as transportation, public utility, and recreational sources, with emphasis on low frequency sound and infrasound Covers sounds that affect some but not others, how sounds can be controlled on a practical level, and how and what sounds are regulated Includes coverage of both positive and negative effects 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.
Including many simple exercises, interviews with experts, and potent, transformational concepts, this book is a practical guide to improving the vital personal communication skills of speaking and listening. --
An accessible guide to the practice of conscious humming • Details conscious humming and breathing exercises from simple to advanced, including online access to examples of these practices • Examines the latest studies on sound, revealing how humming helps with stress levels, sleep, and blood pressure, increases lymphatic circulation, releases endorphins, creates new neural pathways in the brain, and boosts blood platelet production • Explores the spiritual use of humming, including its use as a sonic yoga technique and its role in many world traditions • Includes access to online examples, allowing you to experience the powerful vibratory resonance that humming can create Humming is one of the simplest and yet most profound sounds we can make. If you have a voice and can speak, you can hum. Research has shown humming to be much more than a self-soothing sound: it affects us on a physical level, reducing stress, inducing calmness, and enhancing sleep as well as lowering heart rate and blood pressure and producing powerful neurochemicals such as oxytocin, the “love” hormone. In this guide to conscious humming, Jonathan and Andi Goldman show that you do not need to be a musician or singer to benefit from sound healing practices—all you need to do is hum. They provide conscious humming and breathing exercises from simple to advanced, complete with online examples, allowing you to experience the powerful vibratory resonance that humming can create and harness its healing benefits for body, mind, and spirit. They explore the science behind sound healing, revealing how self-created sounds can literally rearrange molecular structure and how humming not only helps with stress levels, sleep, and blood pressure but also increases lymphatic circulation and melatonin production, releases endorphins, creates new neural pathways in the brain, and releases nitric oxide, a neurotransmitter fundamental to health and well-being. The authors show how sound can act as a triggering mechanism for the manifestation of your conscious intentions. They also examine the spiritual use of humming, including its use as a sonic yoga technique and its role in many world traditions, such as the Om, Aum, or Hum of Hindu and Tibetan traditions. Providing a self-healing method accessible to all, the authors reveal that, even if you have no musical ability, we are all sound healers.
The Effects of Noise on Man covers the techniques for the evaluation of environmental noise in terms of its effects on human. The book provides the fundamental definitions of sound, its measurement, and concepts of the basic functioning, and the attributes of the auditory system. The text also presents along with their experimental basis, procedures for estimating from physical measures of noise its effects on man's auditory system and speech communications. The last part of the book is devoted to man's nonauditory system responses and includes information about the effects of noise on work performance, sleep, feelings of pain, vision, and blood circulation.
This volume is a comprehensive source of information on the fundamentals of hearing and sound physics. Using research from 1980 onward, this book is a critical review of past and up-to-date research findings and concepts on the effects of noise on people; it focuses on the psychological and physiological affects of noise on hearing and performance. This text elucidates the interrelations of the acoustical, physiological, psychological, and sociological factors that are involved in making noise a problem to individuals and societies. Also discussed are hearing loss, speech communications, annoyance, and health effects criteria for the limitation of exposures to noise in living and work areas. Key Features * Physical characteristics of sound and noise * Acoustical-sensorineural response characteristics of the ear * Basic psychological sensations and perceptions that ensue from analysis of sound and noise by the auditory system * Laboratory and real-life research on the impairments to hearing, speech communication, task performance, and mental and bodily health that occur from exposure to noise * Physical measures which predict adverse effects on hearing, behavior, and health from exposure to noise
Sound is integral to how we experience the world, in the form of noise as well as music. But what is sound? What is the physical basis of pitch and harmony? And how are sound waves exploited in musical instruments? In this Very Short Introduction Mike Goldsmith looks at the science of sound and explores sound in different contexts, covering the audible and inaudible, sound underground and underwater, accoustic and electric, and hearing in humans and animals. He also considers the problem of sound out of place - noise and its reduction. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.
In the Occupational Safety and Health Act of 1970, Congress declared that its purpose was to assure, so far as possible, safe and healthful working conditions for every working man and woman and to preserve our human resources. In this Act, the National Institute for Occupational Safety and Health (NIOSH) is charged with recommending occupational safety and health standards and describing exposure concentrations that are safe for various periods of employment-including but not limited to concentrations at which no worker will suffer diminished health, functional capacity, or life expectancy as a result of his or her work experience. By means of criteria documents, NIOSH communicates these recommended standards to regulatory agencies (including the Occupational Safety and Health Administration [OSHA]) and to others in the occupational safety and health community. Criteria documents provide the scientific basis for new occupational safety and health standards. These documents generally contain a critical review of the scientific and technical information available on the prevalence of hazards, the existence of safety and health risks, and the adequacy of control methods. In addition to transmitting these documents to the Department of Labor, NIOSH also distributes them to health professionals in academic institutions, industry, organized labor, public interest groups, and other government agencies. In 1972, NIOSH published Criteria for a Recommended Standard: Occupational Exposure to Noise, which provided the basis for a recommended standard to reduce the risk of developing permanent hearing loss as a result of occupational noise exposure [NIOSH 1972]. NIOSH has now evaluated the latest scientific information and has revised some of its previous recommendations. The 1998 recommendations go beyond attempting to conserve hearing by focusing on preventing occupational noise-induced hearing loss (NIHL). This criteria document reevaluates and reaffirms the recommended exposure limit (REL) for occupational noise exposure established by the National Institute for Occupational Safety and Health (NIOSH) in 1972. The REL is 85 decibels, A-weighted, as an 8-hr time-weighted average (85 dBA as an 8-hr TWA). Exposures at or above this level are hazardous. By incorporating the 4000-Hz audiometric frequency into the definition of hearing impairment in the risk assessment, NIOSH has found an 8% excess risk of developing occupational noise-induced hearing loss (NIHL) during a 40-year lifetime exposure at the 85-dBA REL. NIOSH has also found that scientific evidence supports the use of a 3-dB exchange rate for the calculation of TWA exposures to noise. The recommendations in this document go beyond attempts to conserve hearing by focusing on prevention of occupational NIHL. For workers whose noise exposures equal or exceed 85 dBA, NIOSH recommends a hearing loss prevention program (HLPP) that includes exposure assessment, engineering and administrative controls, proper use of hearing protectors, audiometric evaluation, education and motivation, recordkeeping, and program audits and evaluations. Audiometric evaluation is an important component of an HLPP. To provide early identification of workers with increasing hearing loss, NIOSH has revised the criterion for significant threshold shift to an increase of 15 dB in the hearing threshold level (HTL) at 500, 1000, 2000, 3000, 4000, or 6000 Hz in either ear, as determined by two consecutive tests. To permit timely intervention and prevent further hearing losses in workers whose HTLs have increased because of occupational noise exposure, NIOSH no longer recommends age correction on individual audiograms.
