[gstreamer-bugs] [Bug 468619] New library gstfft: FFT library for integer and float types based on kiss

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: HEAD CVS




------- Comment #3 from Sebastian Dröge  2007-08-20 18:36 UTC -------
Created an attachment (id=94008)
 --> (http://bugzilla.gnome.org/attachment.cgi?id=94008&action=view)
Many improvements and changes to spectrum, including use of libgstfft

This does the following to spectrum:
- porting to GstAudioFilter
- averaging all FFTs done in one interval
- adding support for int32, float and double
- use libgstfft
- use a better windowing function, giving much better results
- use floats for the GstMessage contents
- allow posting phase together with the magnitude in one message
- actually do an FFT with the specified number of bands instead of always doing
a 1024 FFT and interpolate the bands
- improve the unit test much by using a 11025 hz signal and checking the FFT of
that for all 4 supported input types


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