<html> <head> <style></style></head> <body class='hmmessage'><div dir='ltr'> Hello I did some tests. It appears the problem is connected with the Band-Pass/Band-reject filter (audiochebband). When I remove it, everything behaves with gst-1.0 as with gst-0.10. Has this plugin changed? Can I find an example of code using this properly somewhere for I don't see it in <pre>gst-plugins-good/tests/examples/spectrum? Thank you for your help Victor </pre><pre> </pre><div> <pre> > > My app displays harmonics of the sound in 3D, thanks to the 'spectrum' element. > When I use the microphone of the computer as the audio source, with Gstreamer-0.10, I have a clear view of the harmonics. > When I do the same with Gstreamer-1.0, the sensitivity seems much higher, and I have a huge "background" noise contamining the spectrum data, especially in the lower frequencies (but also in the rest of the spectrogram), wich makes the ratio sound/background noise much lower. I can lower the sensitivity of the microphone but in that case, I loose the interesting display... > > When I do an analysis of an audio file (either a flac, wac, mp3... or a file recorded by the app), it works fine. > > I join two pictures to show the difference, when pronouncing differents voyels; you must see higher and lower harmonics, according to wich voyel is said; on the first pic, when gst-0.10 is used, you can see a very clear drawing; on the second pic, when gst-1.0 is used, although the sensitivity of the mic is lessened, the ratio sound/background noise is much worse. > > I guess the spectrum element has been rewritten. What is possible to change? Is it possible to get more information on how this plugins works? This looks like a regression in spectrum. It wasn't really rewritten, but it was refactored a bit and IIRC the API changed slightly too. Take a look at the example in gst-plugins-good/tests/examples/spectrum to see if you're still using it correctly. If you do, please open a bug report at <a href="http://bugzilla.gnome.org" target="_blank">http://bugzilla.gnome.org</a> with a testcase to reproduce the different behaviours. Thanks! -- Sebastian Dröge, Centricular Ltd · <a href="http://www.centricular.com" target="_blank">http://www.centricular.com</a> </pre> _______________________________________________ gstreamer-devel mailing list gstreamer-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</div> </div></body> </html>