similar to: speex denoiser adaptation time

Hi Tom, Of course the current tuning of the denoise is approximative and could probably be improved... That being said, the modulo 100 isn't the adaptation time itself, but rather the window over which to look for minima. The main idea is this: if the power in a certain bin isn't too much higher than the minimal value for a certain window, then we can adapt the noise estimate. The

Skipped content of type multipart/alternative-------------- next part -------------- A non-text attachment was scrubbed... Name: preproc_patch_dth_10_26_05.patch Type: application/octet-stream Size: 8774 bytes Desc: not available Url : http://lists.xiph.org/pipermail/speex-dev/attachments/20051026/c27a3ed6/preproc_patch_dth_10_26_05.obj

Jean Marc, I have been fiddling around with preprocess to try to get it sounding less metallic/underwater- so based on some things said recently, I have been first fiddling with mean_post and mean_prior to try to get them to do change the update rate, so that update_noise gets called at the right times. Haven't made it too deep into the code, but I have a few questions in speex_preprocess:

Hello The st->zeta pointer isn't freed in the speex_preprocess_state_destroy() function of the preprocess.c file (alloced in line 167). It's in Speex 1.1.4 by the way. I'm trying to make the denoiser work with my application and has got reasonable noise reduction after applying the denoiser. I, however, haven't been able to find any information of what the purpose of

Bjoern, As far as I understand it, AGC keeps the volume level of the speech elements (i.e. gain) stable no matter how quiet or loud the input becomes- Tom At 10:53 AM 3/28/2004, Bjoern Rasmussen wrote: >Hello > >The st->zeta pointer isn't freed in the speex_preprocess_state_destroy() >function of the preprocess.c file (alloced in line 167). It's in Speex >1.1.4 by

Not a big deal, but the "<http://xiph.org/svn.html>Subversion Access" link on http://www.speex.org/download.html page should probably point to: http://www.xiph.org/svn/ rather than: http://xiph.org/svn.html Tom ______________________________________________ Tom Harper Lead Software Engineer SightSpeed - <http://www.sightspeed.com/>http://www.sightspeed.com/ 918 Parker

Congrats Jean Marc, Just heard you got a new google assistant for the Ghost project! Tom ______________________________________________ Tom Harper Lead Software Engineer SightSpeed - <http://www.sightspeed.com/>http://www.sightspeed.com/ 918 Parker St, Suite A14 Berkeley, CA 94710 Email: tharper@sightspeed.com Phone: 510-665-2920 Fax: 510-649-9569 My SightSpeed Video Link:

Jean-Marc, So I saw in the latest code that the vad in the preprocessor is gone/going to be re-written. Is there a plan as far as this goes? Just wondering as the current one seems to work pretty well. Thanks! Tom ______________________________________________ Tom Harper Lead Software Engineer SightSpeed - <http://www.sightspeed.com/>http://www.sightspeed.com/ 918 Parker St, Suite A14

Dear R-list members, I have a problem with translating a mathematica script into R. The whole script is at the end of the email (with initial values for easy reproduction) and can be pasted directly into R. The problematic part (which is included below of course) is <--- Original Mathematica ---> (* p_svbar *) UiA = Ni (Dsi - 2Di A + A^2)/2; UiiA = Nii (Dsii - 2Dii A + A^2)/2; psvbar =

Hi, So I got a crash on the following code: k1=SUBMODE(lpc_enh_k1); k2=SUBMODE(lpc_enh_k2); which in the newer codebase is: bw_lpc(SUBMODE(lpc_enh_k1), st->interp_qlpc, awk1, st->lpcSize); bw_lpc(SUBMODE(lpc_enh_k2), st->interp_qlpc, awk2, st->lpcSize); I am not sure if the newer code will have the same issue but the following check is

re: At 03:22 PM 10/25/2005, Jean-Marc Valin wrote: >Are you really sure you didn't have some corruption elsewhere? Totally possible- this is the first time this has happened that I know of in many many hours of usage- On the other hand, this null check isn't in my code base and it was in nb_decode_lost, and nb_encode- so I figured it was just an oversight- Tom

At 12:35 PM 10/6/2004, Matthias Granberry wrote: >There is some SSE assembly >language, but it's in GCC/AT&T syntax rather than the windows-standard >Intel syntax, so you might have to do some of your own translation to >something your compiler understands. We submitted an intel patch a ways back- maybe it is in the archives somewhere... Tom -- Tom Harper -

I'm not sure if this is due to the same problem, but I get the same clipping behavior when trying to use VAD+denoiser on a particular mic+speaker setup that has significant background noise (enough to really foul up the codec should the denoiser be turned off.) Leaving VAD off and transmitting continuously seems to be the only way to avoid this clipping. Another person I regularly

Good morning, I am currently displaying a time series with the time on the Y axis, and the values on the X axis. The problem is that I wanted to reverse the Y axis (that is, to have the latest date the closest to the X axis). So I looked for a way to do this on this mailing list and I found a response: inverting the ylim parameter of the plot. I did it, the data are displayed correctly, but now

We just came across an occasional crash with the Win32 Assembly patch I sent in earlier, so hold off on applying it until we send an updated version. Aron Rosenberg SightSpeed http://www.sightspeed.com <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to

Jean Marc, Thanks for the advice. The estimate update may come in handy. I have had some time to play with the adaptation time. I tried making the adaptation time 80, 160 and 320. It seemed like the smaller value was actually the best in my initial testing, but I need to test this against a more noisy setup than I have here. I am guessing that for vad a shorter adaptation time is probably

I pulled the test directory from 2003, but everything else from 2005. The 2005 files have more ?cross-compiling? targets than the 2003 ones. I fixed the various missing files in the new 2008 projects (misc.c and one other other are gone now). The only thing you could do which would make them more compact would be to get rid of the subdirectories under each vs-version. There is no real need for

Jean Marc & list, Following up on this- there seems to be an issue with this calculation in mdf.c (Smooth echo energy estimate over time) Pey += Eh*Yh; Pyy += Yh*Yh; it goes too large for floating point, which seems to be caused by extremely large values in st->Rf[j], st->Yf[j] and smaller values in st->Eh[j], st->Yh[j]- things were relatively quiet

Tom Harper wrote: > Hi All & Jean Marc, > > Once again I find myself delving into the pre-processing code to fiddle > with the VAD, AGC and denoising code. > > Where i am at is that I have implemented all of Steve Kann's mods, and > they are 90% of the way there in terms of working, except that I am still > having issues denoising open air mics. But that is

I have been working on a patch to add support for max/min reductions in LoopVectorize. One of the comments that came up in review is that the implementation could be simplified (and less fragile) if max and min intrinsics were recognized rather than looking for compare-select sequences. The suggestion was to change compare-selects into max and min intrinsic calls during instcombine. The