Instead of using the threshold to select coefficients in the Fourier domain, you could also use a low-pass filter. can some one explain which would be better?
2 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
sai
el 6 de Dic. de 2013
Respondida: Wayne King
el 6 de Dic. de 2013
Instead of using the threshold to select coefficients in the Fourier domain, you could also use a low-pass filter. can some one explain which would be better?
0 comentarios
Respuesta aceptada
Wayne King
el 6 de Dic. de 2013
I think using a lowpass filter is better in most cases than just zeroing out coefficients in the Fourier transform.
A lowpass filter gives you a better attenuation profile by multiplying the signal's Fourier transform with the Fourier transform of the filter (convolution in time).
0 comentarios
Más respuestas (0)
Ver también
Categorías
Más información sobre Filter Analysis en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!