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| 折扣與優(yōu)惠：團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要 隨著信息時代和數(shù)字世界的來臨，數(shù)字信號處理得到了飛躍式的發(fā)展與進步，已廣泛應(yīng)用于語音、圖像、自動控制、航天、航空、醫(yī)療和家用電器等眾多領(lǐng)域。而在數(shù)字信號處理領(lǐng)域中，數(shù)字濾波器又占據(jù)了十分重要的位置，利用所需要信號和其他信號在頻譜上的差別，通過數(shù)字濾波器可獲得濾除雜波、保持原有信號不變的效果。由于數(shù)字濾波器所處理的信號為離散信號，可以用差分方程對其進行描述，用離散變換的方法來分析、處理信號，這樣有利于數(shù)學(xué)分析，又可清楚地描述出所涉及濾波器的形式。 數(shù)字濾波器分為有限沖擊響應(yīng)（FIR）和無限沖擊響應(yīng)（IIR）濾波器兩大類。與IIR濾波器相比，F(xiàn)IR的實現(xiàn)是非遞歸的，因而它是穩(wěn)定的。更重要的是，F(xiàn)IR濾波器在滿足頻幅響應(yīng)要求的同時，可以獲得嚴(yán)格的線性相位特性。因此，它在高保真的信號處理，如數(shù)字音頻、圖像處理、數(shù)據(jù)傳輸以及生物醫(yī)學(xué)等領(lǐng)域得到廣泛應(yīng)用。 本文主要研究數(shù)字濾波器的基本理論，并對有限沖擊響應(yīng)數(shù)字濾波器FIR的設(shè)計和實現(xiàn)進行了分析和研究，本課題主要用MATLAB軟件設(shè)計FIR數(shù)字濾波器，然后應(yīng)用DSP集成開發(fā)環(huán)境-CCS編寫程序，實現(xiàn)對輸入信號進行濾波并用模擬器進行仿真。 關(guān)鍵詞：數(shù)字濾波器，F(xiàn)IR，MATLAB，DSP
Abstract With the information times and digital world coming, Digital signal processing got skip-type development and progress ，it had been widely used in voice and image, automatic control, aerospace, aviation, health care and household appliances,etc。 And in digital signal processing fields, digital filters and occupy the important position。 Using the signal and other signals needed to differences in spectrum can be obtained through digital filters filter clutter, keep the original signal unchanged effect。As digital filter processing signal for discrete signal, it can use to describe the difference equations ，and it use discrete transform method to analysis and processing signal, which is conducive to mathematical analysis, but also clearly describe the form of involved filter。 Digital filter are divided into limited shock response （FIR）and infinite shock response(IIR) filter two kinds. Compared with IIR filter, the realization of FIR is recursively, it is stable. More importantly, FIR filters amplitude response in meeting frequency requirements while can acquire strict linear phase characteristic. Therefore, in high fidelity signal processing, such as digital audio and image processing, data transmission and the biomedical sciences，it is widely used. This article mainly studies the basic theory of digital filter, and the limited shock response digital filter, the design and implementation of FIR is analyzed and studied, this topic is MATLAB software designing FIR digital filters, then apply DSP integrated development environment- CCS debugging is simulated by simulator. Key words: Digital filter, FIR，MATLAB，DSP
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