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Statements

Subject Item
dbr:Hann_function
rdfs:label
Funció de Hann Função de Hann Hann function
rdfs:comment
The Hann function is named after the Austrian meteorologist Julius von Hann. It is a window function used to perform Hann smoothing. The function, with length and amplitude is given by: For digital signal processing, the function is sampled symmetrically (with spacing and amplitude ): which is a sequence of samples, and can be even or odd. (see § Hann and Hamming windows) It is also known as the raised cosine window, Hann filter, von Hann window, etc. A função de Hann, nomeado após o meteorologista Austríaco Julius von Hann, é uma função de janelamento discreto dada por ou ou, em termos da função haverseno, La funció de Hann, que porta el nom del meteoròleg austríac , és una funció finestra discreta donada per o o, en termes de la funció haversine,
foaf:depiction
n14:0...N).svg n14:DFT-even_Hann_window_&_spectral_leakage.png
dcterms:subject
dbc:Signal_processing
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4326149
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1102533151
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dbr:Discrete-time_Fourier_transform dbr:Window_function dbr:MathWorld dbr:Hamming_function dbr:Apodization dbr:Discrete_Fourier_transform dbr:Raised_cosine_distribution dbr:Rectangular_function dbr:Richard_Hamming dbr:Fourier_transform dbr:Euler's_formula n18:Window_function_and_its_Fourier_transform_–_Hann_(n_=_0...N).svg dbr:Raised-cosine_filter n18:DFT-even_Hann_window_&_spectral_leakage.png dbc:Signal_processing dbr:Digital_signal_processing dbr:Julius_von_Hann
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dbp:proof
Using Euler's formula to expand the cosine term in we can write: : which is a linear combination of modulated rectangular windows: : Transforming each term: :
dbp:title
Derivation
dbo:abstract
The Hann function is named after the Austrian meteorologist Julius von Hann. It is a window function used to perform Hann smoothing. The function, with length and amplitude is given by: For digital signal processing, the function is sampled symmetrically (with spacing and amplitude ): which is a sequence of samples, and can be even or odd. (see § Hann and Hamming windows) It is also known as the raised cosine window, Hann filter, von Hann window, etc. A função de Hann, nomeado após o meteorologista Austríaco Julius von Hann, é uma função de janelamento discreto dada por ou ou, em termos da função haverseno, La funció de Hann, que porta el nom del meteoròleg austríac , és una funció finestra discreta donada per o o, en termes de la funció haversine,
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wikipedia-en:Hann_function?oldid=1102533151&ns=0
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wikipedia-en:Hann_function