Howtosignalprocessing
- What type of filter is used to reconstruct the sampled signal?
- What is the need for anti imaging filter after upsampling?
- What is the effect of upsampling and downsampling?
- What is upsampling in signal processing?
What type of filter is used to reconstruct the sampled signal?
However, for a band-limited continuous-time signal, if the sampling instants are sufficiently close then the signal may be reconstructed exactly by using a low pass filter.
What is the need for anti imaging filter after upsampling?
The anti-imaging filter that supports various interpolation rates in the digital radio system of the present invention for achieving this purpose, routes the input signal by determining whether to use each sub-filter in the polyphase filter according to the interpolation rate in the input routing section.
What is the effect of upsampling and downsampling?
Downsampling is the reduction in spatial resolution while keeping the same two-dimensional (2D) representa- tion. It is typically used to reduce the storage and/or transmission requirements of images. Upsampling is the increasing of the spatial resolution while keeping the 2D representation of an image.
What is upsampling in signal processing?
Upsampling is the process of inserting zero-valued samples between original samples to increase the sampling rate. (This is sometimes called “zero-stuffing”.) This kind of upsampling adds undesired spectral images to the original signal, which are centered on multiples of the original sampling rate.
