A Brief Analysis Of Ambisonics And Soundfield Microphone Decoding Schemes Based On Stereophonic Recording Techniques

Ambisonics is a method of decomposing and re-composing spatial sound field.It is usually regarded as a completion of Blumlein pair and M/S recording technique.It was developed by British engineer Michael Anthony Gerzon in the 1970 s,and after a forty years' development,becomes nowadays an audio format choice of 360° spatial video.This dissertation,with an introduction and a model proof of First Order Ambisonics and soundfield microphone,designed and analyzed three decoding schemes based on three common two-channel stereophonic coincident recording technique: Blumlein pair technique,X-Y technique and M/S technique.Besides,the fifth chapter introduced a computer program that processes sound signals from a soundfield microphone and decodes them to two-channel stereophonic playback,and also,evaluated the output sound quality.