數(shù)字信號(hào)處理實(shí)驗(yàn)報(bào)告三-用FFT對(duì)信號(hào)作頻譜分析

.實(shí)驗(yàn)三用FFT對(duì)信號(hào)作頻譜分析姓名：班級(jí)：學(xué)號(hào)：一、實(shí)驗(yàn)?zāi)康木肺臋n放心下載。二、實(shí)驗(yàn)原理與方法用精品文檔放心下載D精品文檔放心下載N/N感謝閱讀/ND精品文檔放心下載N精品文檔放心下載N謝謝閱讀謝謝閱讀精品文檔放心下載精品文檔放心下載三、實(shí)驗(yàn)內(nèi)容及步驟x(n)R(n)14n1,0n3x(n)8,4n720,n4n,0n3x(n)n3,4n730,n..N為8和精品文檔放心下載x4(n)4nx5(n)n/nN為8和感謝閱讀x6t)cos8tttFs64Hz四、實(shí)驗(yàn)結(jié)果%用精品文檔放心下載精品文檔放心下載8謝謝閱讀的8點(diǎn)感謝閱讀的點(diǎn)謝謝閱讀的8點(diǎn)精品文檔放心下載的點(diǎn)精品文檔放心下載的8點(diǎn)謝謝閱讀的點(diǎn)謝謝閱讀8點(diǎn)感謝閱讀ωπ8點(diǎn)謝謝閱讀謝謝閱讀點(diǎn)謝謝閱讀ωπ點(diǎn)感謝閱讀感謝閱讀8點(diǎn)精品文檔放心下載..ωπ8點(diǎn)精品文檔放心下載謝謝閱讀點(diǎn)謝謝閱讀ωπ點(diǎn)謝謝閱讀精品文檔放心下載8點(diǎn)感謝閱讀ωπ8點(diǎn)感謝閱讀謝謝閱讀點(diǎn)謝謝閱讀ωπ點(diǎn)精品文檔放心下載謝謝閱讀謝謝閱讀謝謝閱讀謝謝閱讀的8點(diǎn)感謝閱讀的8點(diǎn)精品文檔放心下載謝謝閱讀謝謝閱讀的點(diǎn)精品文檔放心下載的點(diǎn)精品文檔放心下載8點(diǎn)謝謝閱讀ωπ8點(diǎn)感謝閱讀感謝閱讀點(diǎn)謝謝閱讀ωπ點(diǎn)精品文檔放心下載謝謝閱讀8點(diǎn)精品文檔放心下載ωπ8點(diǎn)謝謝閱讀感謝閱讀點(diǎn)精品文檔放心下載ωπ點(diǎn)精品文檔放心下載謝謝閱讀謝謝閱讀感謝閱讀對(duì)精品文檔放心下載的點(diǎn)精品文檔放心下載精品文檔放心下載..F點(diǎn)感謝閱讀8點(diǎn)感謝閱讀謝謝閱讀謝謝閱讀謝謝閱讀對(duì)感謝閱讀的點(diǎn)謝謝閱讀謝謝閱讀F點(diǎn)精品文檔放心下載8點(diǎn)精品文檔放心下載謝謝閱讀謝謝閱讀感謝閱讀對(duì)感謝閱讀的點(diǎn)精品文檔放心下載精品文檔放心下載F點(diǎn)謝謝閱讀8點(diǎn)精品文檔放心下載精品文檔放心下載精品文檔放心下載謝謝閱讀/kNkk0,1,2,,N1..度幅44度22幅000.511.52000.511.52ω/π(1a)點(diǎn)DFT[x(n)]1ω/π(1b)16點(diǎn)DFT[x(n)]12020度幅10度幅10000.511.52000.511.52ω/π(2a)點(diǎn)DFT[x(n)]2ω/π(2b)16點(diǎn)DFT[x(n)]2度幅2020度1010幅000.511.52000.511.52ω/π(3a)點(diǎn)DFT[x(n)]3ω/π(3b)16點(diǎn)DFT[x(n)]3x(n)R14(n)的8點(diǎn)和點(diǎn)x(n)1的8x3(n)x2((n3))8R(n)x(n)83與x(n)2的8點(diǎn)x(n)3與x2(n)..46度幅32度幅42

1000.511.52000.511.52ω/π(4a)點(diǎn)DFT[x(n)]4ω/π(5a)點(diǎn)DFT[x(n)]58866度度幅4幅422000.511.52000.511.52ω/π(4b)16點(diǎn)DFT[x(n)]4ω/π(5b)16點(diǎn)DFT[x(n)]5x4(n)n)4和π1謝謝閱讀x(n)n)n)48以感謝閱讀5π和π2感謝閱讀..度幅1050-30-20-10010f(Hz)(6a)16點(diǎn)|DFT[x(nT)]|62030度10幅0-30-20-100102030f(Hz)(6b)32點(diǎn)|DFT[x(nT)]|6度20幅0-30-20-100102030f(Hz)(6c)點(diǎn)|DFT[x(nT)]|6x6(t)cos8tcos16tcostx6(t)有3f14Hz,f28Hz,f310Hzx(t)6。采Fs64Hz16f18f26.4f3是x6(t)，x6(t)32精品文檔放心下載謝謝閱讀)感謝閱讀感謝閱讀x2(n)和x3(n)感謝閱讀答：M1,謝謝閱讀精品文檔放心下載..謝謝閱讀感謝閱讀為ππ精品文檔放心下載，精品文檔放心下載由實(shí)驗(yàn)內(nèi)容一的運(yùn)行結(jié)果知，x(n)2x(n)和3的幅頻特性是相同的，因?yàn)閤(n)x32((n3