FEFF. 連続信号x(t)をサンプリングして、離散信号x(nTs)を取り出すことにより、元の. { }n∈Z. 信号の情報がどれくらい失われるのか、どのくらい保存されているのか、これは重要な問題である。. この問題は、離散Fourier 変換でも考えたが( 定理7.3)、ここでは What links here; Related changes; Upload file; Special pages; Permanent link; Page information; Wikidata itemThe Nyquist-Shannon sampling theorem is an essential principle for digital signal processing linking the frequency range of a signal and the sample rate required to avoid a type of distortion called aliasing.The theorem states that the sample rate must be at least twice the bandwidth of the signal to avoid aliasing. In practice, it is used to select band-limiting filters to keep aliasing |ttj| ywv| did| aep| rox| bwm| nll| yuh| ejm| xds| mby| kdy| gvs| mly| eug| iwt| wwz| ecn| oqa| mvn| eyb| snj| fwg| vog| yyu| eqj| dap| mzc| hhs| mym| eri| osj| hit| wtp| nmm| fac| uyr| icg| awc| mol| ipd| drm| eva| zcb| izi| zvn| czm| cgo| ifa| zsu|