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gst/filter/: Add small comparision with the chebyshev filters in the docs.

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Original commit message from CVS:
* gst/filter/gstbpwsinc.c:
* gst/filter/gstlpwsinc.c:
Add small comparision with the chebyshev filters in the docs.
This commit is contained in:
Sebastian Dröge 2007-08-19 19:16:33 +00:00
parent 8f35051ca5
commit efea15c44c
3 changed files with 16 additions and 2 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2007-08-19 Sebastian Dröge <slomo@circular-chaos.org>
* gst/filter/gstbpwsinc.c:
* gst/filter/gstlpwsinc.c:
Add small comparision with the chebyshev filters in the docs.
2007-08-19 Sebastian Dröge <slomo@circular-chaos.org>
* tests/check/elements/bpwsinc.c: (GST_START_TEST),

5
gst/filter/gstbpwsinc.c
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@ -46,6 +46,11 @@
* controls rolloff and stopband attenuation. The Hamming window provides a faster rolloff but a bit
* worse stopband attenuation, the other way around for the Blackman window.
* </para>
* <para>
* This element has the advantage over the Chebyshev bandpass and bandreject filter that it has
* a much better rolloff when using a larger kernel size and almost linear phase. The only
* disadvantage is the much slower execution time with larger kernels.
* </para>
* <title>Example launch line</title>
* <para>
* <programlisting>

7
gst/filter/gstlpwsinc.c
View file

@ -31,8 +31,6 @@
* is probably the bottleneck
* - Maybe allow cascading the filter to get a better stopband attenuation.
* Can be done by convolving a filter kernel with itself
* - Drop the first kernel_length/2 samples and append the same number of
* samples on EOS as the first few samples are essentialy zero.
*/
/**
@ -46,6 +44,11 @@
* controls rolloff and stopband attenuation. The Hamming window provides a faster rolloff but a bit
* worse stopband attenuation, the other way around for the Blackman window.
* </para>
* <para>
* This element has the advantage over the Chebyshev lowpass and highpass filter that it has
* a much better rolloff when using a larger kernel size and almost linear phase. The only
* disadvantage is the much slower execution time with larger kernels.
* </para>
* <title>Example launch line</title>
* <para>
* <programlisting>