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Downsampling (Matlab / Octave function)
Summary
| Downsampling removes samples from the signal. In combination with a filter, it can be part of decimation. |
  Discussion of upsampling, downsampling, interpolation, decimation. Note that the terms are used inconsistently in literature, and may depend on the context in casual discussion. |
Matlab function
mn_downsample.mUsage
| data=mn_downsample(data, factor) |
Source code
function data=mn_downsample(data, factor)
[nRow, nCol]=size(data);
if nRow > 1
error('need row vector');
end
dsize=ceil(nCol/factor);
nz=dsize*factor-nCol;
if nz > 0
data=[data, zeros(1, nz)];
end
data=reshape(data, factor, dsize);
data=data(1, :);
data=data(1:dsize);
© Markus Nentwig 2007-2008
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