Like its popular first edition, this new book stresses a fundamental but frequently overlooked truth: the process of ordering hearing aids is as important as selecting and verifying hearing aid fittings. In this revised and expanded second edition, you'll find all the information you need to confidently order hearing aids, including four entirely new chapters on multi-channel nonlinear signal processing; advances in microphone technology; digital signal processing; and developments in rehabilitation technology. All remaining chapters have been updated to reflect the newest advances in this fast-moving field. Packed with beneficial tables and diagrams, Hearing Aids: Standards, Options, and Limitations provides essential guidelines on measuring hearing aids performance. You will also learn the advantages and disadvantages of all available microphones, receivers, telecoils, amplifiers, and more; the problems of distortion, noise, and the central nervous system; and their effect on hearing aid functions. Key features: -Four new chapters on the newest advances in the field, including digital signal processing and assistive listening devices-Valuable strategies on increasing user satisfaction--with pointers on optimizing amplification while minimizing distortion and background noise-More than 300 helpful diagrams and tables to highlight performance of the various selections-State-of-the-art information from leading experts in the field Here is the comprehensive text/reference all graduate students and dispensing audiologists need for the most up-to-date information on ordering hearing aids. Stay aware of the newest developments in the field with this essential book and its newly updated companion text, Strategies for Selecting and Verifying Hearing Aid Fittings.