Disturbing Sound Cancellation

• Main Author: Yu, Deyue
• Format: Others
• Language: English
• Published: Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap 2010
• Subjects: System Identification Matlab Digital Signal Processing Linear ARX Model
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-7409

When doing recording work in the studio, disturbing sound must be removed. In this thesis, the purpose of this thesis is to formulate a mathematical equation, by using MATLAB to identify a system, then using the system to do cancellation of disturbing sound. The method of doing cancellation is to subtract the simulated output by the actual output, and then the disturbing sound was cancelled. The main thesis work will focus on the system identification, which is the process of determining the characteristic of an unknown system. Three systems were identified with the same model structure, which is linear (ARX) model. After finding out the model, the model quality must be evaluated. If the model is valid, there is a discussion if it is possible to run the mathematical equation in the real application, and how is the market today.