similar to: Some Speex AGC Questions

I'm attempting to use speex preprocess for automatic gain control in an application I'm working on and could use some help. I'm using Opus as my codec. In order to keep the number of packets down, I'm using 60msec frames. I'm sampling at 48KHz as is recommended for Opus. So, the frame length is 2880 samples and the sampling rate is 48000. The source of the data is a

Hello, I'm using Speex1.1.11.1 source code. I enabled dereverb by speex_preprocess_ctl(). I try different dereverb_level and dereverb_decay values and it seems to not work. I generate some test files in CoolEdit using reverb or echo and then preprocess it by speex_preprocess(preprocess, input, NULL); and output is the same as input:(. Denoising and VAD works very good. I tried dereverb with

I'm having trouble with the preprocessor's noise reduction feature. The basic issue is that it simply doesn't work very well. With my laptop (whose microphone is otherwise quite capable) I routinely hear transient background noise, typing, and other "quiet" sounds leaking through to the speex stream. Even worse, the AGC feature is blowing these things up into just awful

Jean-Marc Valin wrote: >> gcc version 3.4.5 (mingw special) > > Can you try 4.0 or 4.1 just to be sure? mingw (native gcc for win32) doesn't officially support using gcc 4.0 and 4.1 yet (apparantly there have been some issues), so there are no binary packages. But if you think it helps, I can compile gcc 4.1 and give it a shot. >> Compile flags: >> DEFINES +=

Hi, I''m asking my question here, because I could not find any answer to my problem, but I''m affraid shorewall is not the one to blame. First of all I''m using shorewall version 2.0.15 on two linux box. I set up an ipsec tunnel beetween those 2 boxes to be ables to connect 2 not routable subnetworks. Here is my network topology: 10.66.17.0/24 - 10.66.17.1 = eth0

Hi, I have a few problems with my shorewall configuration. First of all, the option maclist seems no to be recognized. I have this: ghostwheel /etc/shorewall # cat interfaces | grep -v ''^#'' - eth1 detect dhcp,tcpflags,routefilter loc eth0 detect tcpflags,maclist When I look at shorewall-init.log, I found out:

I've been using Speex's AGC in my VoIP program with mixed results. One of the problems I had was: At the beginning of the call, if the user hadn't spoken yet and there weren't any background sounds for the AGC to lock on to, most of the time the AGC would almost immediately jump way up to 200x gain (the default max). This is undesirable and usually results in nasty feedback. If

Hi all, I''m currently using ipsec with Shorewall 3.0.7 on a patched 2.6.10 kernel. Having heard that ipsec support was in the standard kernel starting from 2.6.16, I tried to upgrade to the last kernel. My problem is that shorewall won''t start anymore. I get this output in /var/log/shorewall-init.log: Starting Shorewall... Initializing... Shorewall has detected the

Hi Everyone, I am still unable to start Asterisk 1.4 that I installed using ATrpms. I was initially suspecting some permissions issues but it seems to me that its more to do with a speex codec not loading properly. Here is the message I get if I run asterisk -cvvvvvvvvvvvvvv app_userevent.so => (Custom User Event Application) == Parsing '/etc/asterisk/codecs.conf': Found --

Hi, I'm trying to use Speex Echo Canceller for mobile device. The AEC works well so far. However, I want to know how to remove reverberation significantly. I noticed it's not implemented yet in Speex AEC. Are you going to implement it in next version? Could you provide some ideas how to handle reverberation on current version? Thanks in advance. Sincerely, Dennis

I'm running 1.6.1.18 on an older ubuntu machine. I upgraded to dahi-linux-2.3.0. That went fine, and it works. But I decided to use the opportunity to upgrade to 1.6.2.6. That didn't work. configure, make menuselect, make, make install all went fine, or at least seemed to. But it hangs starting up here: [Apr 13 20:15:28] VERBOSE[1612] codec_speex.c: -- CODEC SPEEX: Setting

Andy Ross a ?crit : > I'm having trouble with the preprocessor's noise reduction feature. > The basic issue is that it simply doesn't work very well. > > With my laptop (whose microphone is otherwise quite capable) I > routinely hear transient background noise, typing, and other "quiet" > sounds leaking through to the speex stream. Even worse, the AGC >

Is it possible to have virt-viewer come up when a domain is started with virsh start, the same way that it does with virt-install? Thanks. --- Scott Lerman

Hi Jean-Marc, I got to this mailing list while trying to use the latest SPEEX version (1.2rc1) VAD capabilities. I had difficulties to successfully distinguish speech from non speech on recorded files (probably doing something wrong). Digging into the code I found out a remark saying :"*The VAD has been replaced by a hack pending a complete rewrite*". In search for answer I found out

I think you'll have to modify Speex to get the functionality you're looking for. I've made a few simple modifications to the AGC to prevent it from 1) exceeding a specified level of amplification and 2) enable and disable adaptation, so I can freeze it at a certain level while speech is not detected. It's mostly just a matter of doing this at the end of speex_compute_agc():

Jean-Marc Valin wrote: > That's quite strange. The only thing I can say is that the bug is most > likely *not* around line 414. It's probably some sort of memory > corruption somewhere else (quite possibly outside of Speex). Do you have > any more information? What CPU? What's the value of best_ntarget[j]? Is > SSE enabled? What's the allocation method

agc_gain seemed to fit with the idea of what I wanted to do, it was easy to understand its units and behavior, and freezing it produced the desired results. Also I wanted to cap it, so that's done at the same place, and that definitely works. All I want to do is be able to freeze AGC adaptation and put an upper bound on the AGC (for example, 2x amplification). Both of these things seem

hi, 1. I usr speex wb ,and find voice volume too small , my setting is : st->agc_enabled = 1; st->agc_level = 8000; I feel the agc function not work,how can i enhance the volume. 2. I test encode with 16.8K WB mode and decode with 23.8 WB mode, and find voice not good! with continues electric current sound . why? please help me. thanks a lot. tanger.

Hi Jean-Marc and all, I was playing with the AGC with different sampling rate and I experienced smaller volume level when I increase the sample rate. Should I use a different value for AGC_LEVEL when using different sample rate? I'm using speex-1.2rc1.tar.gz Tks, Aymeric MOIZARD / ANTISIP amsip - http://www.antisip.com osip2 - http://www.osip.org eXosip2 -

I'm getting confused, what's the problem exactly? The AGC doesn't remove the DC or it adds one? Jean-Marc Aymeric Moizard a ?crit : > Hi Jean-Marc & all, > > I'm currently working on a wav file with very low volume. > This wav also contains a DC component. > > Using testdenoise with modification (AGC turned on with > 20000.0 value) I'm able to