diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | gst/audiofx/audiochebband.c | 5 | ||||
| -rw-r--r-- | gst/audiofx/audiocheblimit.c | 5 | ||||
| -rw-r--r-- | gst/audiofx/audiochebyshevfreqband.c | 5 | ||||
| -rw-r--r-- | gst/audiofx/audiochebyshevfreqlimit.c | 5 |
5 files changed, 26 insertions, 0 deletions
@@ -1,5 +1,11 @@ 2007-08-19 Sebastian Dröge <slomo@circular-chaos.org> + * gst/audiofx/audiochebyshevfreqband.c: + * gst/audiofx/audiochebyshevfreqlimit.c: + Add small comparision with the windowed sinc filters in the docs. + +2007-08-19 Sebastian Dröge <slomo@circular-chaos.org> + * tests/check/elements/audiochebyshevfreqband.c: (GST_START_TEST), (audiochebyshevfreqband_suite): * tests/check/elements/audiochebyshevfreqlimit.c: (GST_START_TEST), diff --git a/gst/audiofx/audiochebband.c b/gst/audiofx/audiochebband.c index 56ac8bd2..e39a6465 100644 --- a/gst/audiofx/audiochebband.c +++ b/gst/audiofx/audiochebband.c @@ -42,6 +42,11 @@ * band. The number of poles and the ripple parameter control the rolloff. * </para> * <para> + * This element has the advantage over the windowed sinc bandpass and bandreject filter that it is + * much faster and produces almost as good results. It's only disadvantages are the highly + * non-linear phase and the slower rolloff compared to a windowed sinc filter with a large kernel. + * </para> + * <para> * For type 1 the ripple parameter specifies how much ripple in dB is allowed in the passband, i.e. * some frequencies in the passband will be amplified by that value. A higher ripple value will allow * a faster rolloff. diff --git a/gst/audiofx/audiocheblimit.c b/gst/audiofx/audiocheblimit.c index ee9e5f31..0cd1ea6a 100644 --- a/gst/audiofx/audiocheblimit.c +++ b/gst/audiofx/audiocheblimit.c @@ -38,6 +38,11 @@ * cutoff frequency (high-pass). The number of poles and the ripple parameter control the rolloff. * </para> * <para> + * This element has the advantage over the windowed sinc lowpass and highpass filter that it is + * much faster and produces almost as good results. It's only disadvantages are the highly + * non-linear phase and the slower rolloff compared to a windowed sinc filter with a large kernel. + * </para> + * <para> * For type 1 the ripple parameter specifies how much ripple in dB is allowed in the passband, i.e. * some frequencies in the passband will be amplified by that value. A higher ripple value will allow * a faster rolloff. diff --git a/gst/audiofx/audiochebyshevfreqband.c b/gst/audiofx/audiochebyshevfreqband.c index 56ac8bd2..e39a6465 100644 --- a/gst/audiofx/audiochebyshevfreqband.c +++ b/gst/audiofx/audiochebyshevfreqband.c @@ -42,6 +42,11 @@ * band. The number of poles and the ripple parameter control the rolloff. * </para> * <para> + * This element has the advantage over the windowed sinc bandpass and bandreject filter that it is + * much faster and produces almost as good results. It's only disadvantages are the highly + * non-linear phase and the slower rolloff compared to a windowed sinc filter with a large kernel. + * </para> + * <para> * For type 1 the ripple parameter specifies how much ripple in dB is allowed in the passband, i.e. * some frequencies in the passband will be amplified by that value. A higher ripple value will allow * a faster rolloff. diff --git a/gst/audiofx/audiochebyshevfreqlimit.c b/gst/audiofx/audiochebyshevfreqlimit.c index ee9e5f31..0cd1ea6a 100644 --- a/gst/audiofx/audiochebyshevfreqlimit.c +++ b/gst/audiofx/audiochebyshevfreqlimit.c @@ -38,6 +38,11 @@ * cutoff frequency (high-pass). The number of poles and the ripple parameter control the rolloff. * </para> * <para> + * This element has the advantage over the windowed sinc lowpass and highpass filter that it is + * much faster and produces almost as good results. It's only disadvantages are the highly + * non-linear phase and the slower rolloff compared to a windowed sinc filter with a large kernel. + * </para> + * <para> * For type 1 the ripple parameter specifies how much ripple in dB is allowed in the passband, i.e. * some frequencies in the passband will be amplified by that value. A higher ripple value will allow * a faster rolloff. |