"This comprehensive and highly readable book collects together all that vital underpinning knowledge that you ought to have at your fingertips... with very little in the way of maths or circuit diagrams to challenge those of us who aren't academic by nature... Technical explanations are lucid and informative and there's some good practical advice too. Would I recommend it to readers of Line-Up? Certainly. Not only will it help you deal with earnest enquirers about Dolby 5.1, but it will also consolidate your understanding of some of the fundamental aspects of our trade. If you're recording or mixing stereo or multichannel sound it could even help you do your job better."Malcolm Nelson, Line-Up magazine