电子设计论文----音频信号分析仪

音频信号分析仪摘要A1A0A2A3A4A5A6A7A832A10MCUA11A9A12A13A14A16A17A15ADA19A18A16A21A20A22A23A24A25A26A27A28A29A30A31A32A23A24A33A34A35A29A36A37A38A39FFTA40A41A42A43A44A45A46A47A29A48A49A50A51A22A50A21A20A22A23A24A52A53A22A54A55A56A57A58A59A54A60A61A62A25A26A55A63A51A64A65A29A36A37A38A39A66A55A67A54A68LCDA21A23A24A68A22A69A25A26A70A71A72A73A74A75A76A77A78A79A80A56A68A20A22A23A24A22A54A81A82A8320HZ10KHZA29A84A85A86A81A82A835MVPP5VPPA29A55A67A87A55A8320HZA51100HZA88A89A72A80A56A59A54A78A79A86A66A901,A91A92A76A77A93A79A68A80A56A94A95A23A24A68A94A95A29A96A65A97A68A20A22A23A24A55A63A98A68A99A100A101A102A72A103A104A105A106FFTMCU频谱功率ABSTRACTTHEAUDIOSIGNALANALYZERISBASEDONA32BITMCUCONTROLLER,THROUGHTHEADCONVERTERFORAUDIOSIGNALSAMPLING,THECONTINUOUSSIGNALDISCRETE,ANDTHENTHROUGHTHEFFTFASTFOURIERTRANSFORMCOMPUTING,INTHETIMEDOMAINANDFREQUENCYDOMAINOFTHEVARIOUSAUDIOFREQUENCYSIGNALWEIGHTANDPOWER,ANDOTHERINDICATORSFORANALYSISANDPROCESSING,ANDTHENTHROUGHTHEHIGHRESOLUTIONLCDDISPLAYSIGNALSINTHESPECTRUMTHESYSTEMCANACCURATELYMEASURETHEAUDIOSIGNALFREQUENCYRANGEOF20HZ10KHZ,THERANGEOF55VPPMVPP,RESOLUTIONOF20HZAND100HZCORRESPONDENTPOWERMEASUREMENTACCURACYUPTO1,ANDBEABLETOACCURATELYMEASURINGTHEPERIODICSIGNALCYCLEISTHEIDEALAUDIOSIGNALANALYZERSOLUTIONKEYWORDFFTMCUSPECTRUMPOWERA107A108A109A110A111A112A113A114A108A109A110A111A112A1133A115A116A115A117A118A119A120A119A121A122A1233A115A116A124A125A126A127A128A129A130A119A121A122A123A131A132A133A134A135A136A137A138A134A135A136A137A138A139A140A141A142A143A144A145A146A147A148A149A150A151A152A151A153A154A155A156A157A158A159A160A161A162A163A159A160A161A162A163A139A164A165A166A167A168A165A166A1674A169A170A171A172A173A174A1754A169A170A169A176A177A178A179A174A1755221A180A181A182A183A184A185A186A187A188A189A190A191A1925222ADA193A194A195A196A197A198A199A189A190A191A1926223A200A201A202A203A204A205A206A189A190A191A1926A207A208A209A210A211A208A209A2107A212A213A214A215A216A214A215A2168A217A218A219A218A2199A220A221A222A223A2249A225A226A2249A227A228A229A230A231A232A233A234A235A2299A227A236A229A237A231A238A239A240A2419A227A242A229A243A244A245A245A24610A227A247A248A249A250A251A252111方案论证与比较11采样方法比较与选择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处理器的比较与选择A36A57A87A88A89A90A91A92A37A97A97A93A99A94A95A96A98A100A30A101A102A103A99A17A36A57A255A19A101A102A104A5A105A19A106A107A17A69A65A108A104A5A98A100A30A109A41A17A114A34A101A102A103A99A34A110A111A112A17A69A65A11A5A113A18A30A119A56A120A115A116A255A117A118A65A121A255A27A30A34A110A109A122A16A103A99A17A69A65A123A2A109A41A30A98A124A65A125A103A99A88A23A17A75A76A11A5A130A126A127A128A127A129A131A30A137A132A56A30A58A0A133A140A130A115A132A134A135A119A17A143A136A138A137A132A139A30A147A141A120A17A149A78A34A33A20A21A29A142A151A144A120A17A69A65A10A57A101A102A103A99A145A146A62A121A88A23A148A150A62A121A109A41A148A152A153A154A111A87A30A50A44A5213周期性判别与测量方法比较与选择A10A57A113A18A30A155A20A3A7A17A20A21A53A100A255A117A156A157A17A143A145A158A138A61A63A159A52A165A100A61A63A71A65A121A34A160A165A100A161A71A65A121A20A160A165A100A17A168A62A36A57A20A160A165A100A61A63A159A108A162A163A164A20A21A102A158A138A36A166A167A30A169A102A170A46A171A169A102A172A74A17A69A65A10A57A156A32A173A174A30A17A20A21A53A100A156A157A78A175A21A53A176A156A177A178A78A179A3A7A180A181A94A182A67A30A53A55A66A61A63A159A52A82A121A34A160A53A55A3A7A17A75A76A71A65A183A10A3A7A8A9A50A44A17A39A35A184A27A158A138A61A63A159A17A39A35A165A172A20A21A17A190A11A77A30A3A7A8A9A61A63A177A185A94A24A27A102A53A55A94A30A53A55A35A186A71A65A187A188A172A66A61A63A159A52A123A148A17A75A76A85A86A3A7A121A34A160A8A9A61A63A159A53A55A24A61A63A159A165A100。A10A57A255A117A30A155A20A3A7A17A66A34A160A92A189A62A145A166A191A30A17A69A65A192A138A61A63A159A52A82A10A57A58A20A3A7A170A193A36A157A19A158A138A48A124A194A195A196A30A20A21A202A2A30A157A20A3A7A158A138A61A63A159A52A203A77A75A76A71A65A121A20A160A10A3A7A30A20A197A8A9A27A100A53A55A17A205A82A198A172A66A61A63A159A52A82A75A76A18A13A183A184A95A3A7A62A61A63A30A17A39A35A99A172A20A21A185A17A39A35A121A5A199A20A21A10A3A7A8A9A11A77A17A11A200A201A204A206A19A61A63A30A3A7A17A10A66A185A8A9A207A208A209A156A24A210A177A209A156A17A216A26A217A211A70A17A191A212A32A145A62A61A63A3A7A17A216A26A217A145A70A220A221A222A213A224A17A191A71A65A212A32A62A61A63A3A7A522系统设计21总体设计A155A20A3A7A68A13A255A19A36A103A214A24A215A218A202A16A3050OHMA218A227A219A1A223A225A35A17A68A36A100A226A79A80A228A229A8A9A50A44A17A216A62A255A117A30100MV5VA30A215A230A17A75A76A85A86A54A18A17A161A180A62A231A3A7A192A138A232A233A170A193A214A98A17A168A62A216A3A7A211A124A1712A56A30A/DA42A37A64A12125VA239A234A215A23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