Click here to purchase the entire book in PDF format. Ambisonics To a large portion of the population who have enountered the term, ``Ambisonics'' generally means one of two things : A method of quadaphonic playback which was as unsuccessful as the QD systems in the 1970's. A strange British recording technique which uses a soundfield microphone which may or may not be reproduced using 4 loudspeakers in the 4 corners of the room. In actual fact, is really neither of these things. Ambisonics is more of a mathematical concept and technique which is an attempt to reproduce a recorded soundfield. This idea differs from most stereo and surround recordings in that the intention is to re-create the acoustic wavefronts which existed in the space at the time of the recording rather than to synthesize an interpretation of an acoustic event.