What is difference between decimation and down sampling?
Loosely speaking, “decimation” is the process of reducing the sampling rate. “Downsampling” is a more specific term which refers to just the process of throwing away samples, without the lowpass filtering operation.
What are the decimation algorithm?
The goal of the decimation algorithm is to reduce the total number of triangles in a triangle mesh, preserving the original topology and a good approximation to the original geometry. The decimation algorithm is simple. Multiple passes are made over all vertices in the mesh.
What is decimation rate?
Decimation is a term that historically means the removal of every tenth one. But in signal processing, decimation by a factor of 10 actually means keeping only every tenth sample. This factor multiplies the sampling interval or, equivalently, divides the sampling rate.
What is oversampling and what is the Nyquist rate?
In signal processing, oversampling is the process of sampling a signal at a sampling frequency significantly higher than the Nyquist rate. Theoretically, a bandwidth-limited signal can be perfectly reconstructed if sampled at the Nyquist rate or above it. The Nyquist rate is defined as twice the
Can a signal be reconstructed at the Nyquist rate?
Theoretically, a bandwidth-limited signal can be perfectly reconstructed if sampled at the Nyquist rate or above it. The Nyquist rate is defined as twice the bandwidth of the signal.
Which is the best definition of oversampling in signal processing?
In signal processing, oversampling is the process of sampling a signal at a sampling frequency significantly higher than the Nyquist rate. Theoretically, a bandwidth-limited signal can be perfectly reconstructed if sampled at the Nyquist rate or above it. The Nyquist rate is defined as twice the highest frequency component in the signal.
When do you use the term oversampling in reconstruction?
The term oversampling is also used to denote a process used in the reconstruction phase of digital-to-analog conversion, in which an intermediate high sampling rate is used between the digital input and the analogue output.