books.google.com - Handbook for Sound Engineers is the most comprehensive reference available for audio engineers. Written by many of the top professionals in the field, including Glen Ballou on interpretation systems, intercoms, assistive listening, and image projection; Ken Pohlmann on compact discs and DVDs; David Miles...http://books.google.com/books/about/Handbook_for_sound_engineers.html?id=y0d9VA0lkogC&utm_source=gb-gplus-shareHandbook for sound engineers