One of the first applications of ultrasound was in submarine sonar equip- ment. Since then ultrasound has found increasing applications, particularly in industry, but increasingly in biomedicine. For many years ultrasound has been used in physical therapy, although only in the past decade or two has it evolved from laboratory curiosity to a well-established diagnostic imaging modality. Ultrasound is now a widely accepted, indeed pervasive, diagnos- tic and therapeutic tool in the medical field, and its applications are increasing rapidly. Our intent in developing this book is to provide a coherent tutorial intro- duction to the field of medical ultrasound at a level suitable for those en- tering the area from either medical or scientific backgrounds. The topics discussed should be of interest to nearly all medical and health care per- sonnel needing to understand or operate ultrasonic devices, including clini- cians, medical technicians, physiotherapists, medical physicists, and other biomedical scientists interested in the field. The book opens with a description of the basic principles of propagating acoustic waves, explains how they interact with a wide range of biological systems, and outlines the effects they produce. To provide practical infor- mation to operators of ultrasound equipment, we have included thorough coverage of the details of ultrasonic instrumentation and measurement techniques, and set forth the framework for an effective quality assurance program.
This unique anthology assembles primary documents chronicling the development of the phonograph, talking pictures, and the radio. These three sound technologies shaped Americans’ relation to music from the late nineteenth century until the end of the Second World War, by which time they were thoroughly integrated into Americans’ everyday lives. There are more than 120 selections between the collection’s first piece, an article on the phonograph written by Thomas Edison in 1878, and its last, a column published in 1945, advising listeners “desirous of gaining more from music as presented by the radio.” Among the selections are articles from popular and trade publications, advertisements, fan letters, corporate records, fiction, and sheet music. Taken together, the selections capture how the new sound technologies were shaped by developments such as urbanization, the increasing value placed on leisure time, and the rise of the advertising industry. Most importantly, they depict the ways that the new sound technologies were received by real people in particular places and moments in time.
Sound Innovations for String Orchestra, Book 2 continues your student's musical journey by teaching with segmented presentation of new concepts and introducing ensemble playing. Isolating concepts and teaching them individually helps facilitate understanding of the more advanced material. Following the unique Sound Innovations organization, the book contains four levels, each of which is divided into several sections that introduces concepts separately and provides plenty of practice and performance opportunities to reinforce each lesson. Visit www.alfred.com/soundinnovations for more information.