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dc.contributor.author李宜翰zh_TW
dc.contributor.author冀泰石zh_TW
dc.contributor.authorLi, I-Hanen_US
dc.contributor.authorChi, Tai-Shihen_US
dc.date.accessioned2018-01-24T07:39:08Z-
dc.date.available2018-01-24T07:39:08Z-
dc.date.issued2016en_US
dc.identifier.urihttp://etd.lib.nctu.edu.tw/cdrfb3/record/nctu/#GT070360206en_US
dc.identifier.urihttp://hdl.handle.net/11536/140351-
dc.description.abstract  主動式噪音控制系統發展至今有許多的應用,在本論文中我們將探討不同的主動式噪音控制系統在抗抽油煙機噪音時的效能,我們首先在電腦上模擬單通道主動式噪音控制及多通道主動式噪音控制對真實錄製的抽油煙機噪音的抗噪效能,探討聲源來自不同角度對不同主動式噪音控制系統的影響。   接著我們在無響室中測試所建構出的主動式噪音控制系統,我們使用最小均方差演算法測量次級通道,並探討揚聲器在空間中離人耳不同距離、不同角度、不同高度下對於不同主動式噪音控制系統效能的影響,我們利用殘留噪音音壓的大小以及人對殘留噪音響度的大小進行效能的評比,找出揚聲器在不同位置的抗噪效能趨勢。最後我們將建構的主動式噪音控制系統移至真實環境中操作,比較我們的系統在無響室內跟真實環境中的差異,並將各自最佳的消噪結果與市售主動式抗噪耳機進行比較。zh_TW
dc.description.abstract  Active noise control (ANC) systems can be used in many applications. In this thesis, we consider different ANC systems in reducing range hoods noise. First, we evaluate single-channel and multi-channel ANC systems on reducing recorded range hoods noise in computer simulations and discuss the effects of noise source angles on ANC systems.   Later on, we build an ANC system and test it in an anechoic chamber with the measured secondary path using the least mean square algorithm. We discuss the effects of positions of the loudspeakers on various ANC systems. The sound pressure level (SPL) and loudness of residual noise are selected as the performance measures. Finally, we evaluate the ANC system in a normal room and conduct a performance comparison with ANC headphones.en_US
dc.language.isozh_TWen_US
dc.subject主動式噪音控制系統zh_TW
dc.subject適應性消噪zh_TW
dc.subject適應性系統zh_TW
dc.subjectactive noise controlen_US
dc.subjectadaptive noise cancellationen_US
dc.subjectadaptive systemsen_US
dc.title多通道主動式噪音控制系統之應用zh_TW
dc.titleApplication of multi-channel active noise controlen_US
dc.typeThesisen_US
dc.contributor.department電信工程研究所zh_TW
顯示於類別:畢業論文