search for: dereverb

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 v...

...eems OK. It's not clear if preprocess is actually doing anything. If I turn AGC on, the sound level becomes almost inaudible. When I print the control parameters (the defaults), I get: DENOISE = 1 AGC = 0 AGC_LEVEL = 1174011904 AGC_INCREMENT = 12 AGC_DECREMENT = -40 AGC_MAX_GAIN = 30 VAD = 0 DEREVERB = 0 NOISE_SUPPRESS = -15 QUESTION number 1: Is there a guide to "tuning" the AGC? Is there a document that tells what they really mean and how to adjust them? QUESTION number 2: I see that VAD, DEREVERB, DENOISE, ... have values of 0 or 1. The documentation says that 1 means ON and 2...

...SPEEX: DTX Mode. [off] -- CODEC SPEEX: Preprocessing. [off] -- CODEC SPEEX: Preprocessor VAD. [off] -- CODEC SPEEX: Preprocessor AGC. [off] -- CODEC SPEEX: Setting preprocessor AGC Level to 8000.000000 -- CODEC SPEEX: Preprocessor Denoise. [off] -- CODEC SPEEX: Preprocessor Dereverb. [off] -- CODEC SPEEX: Setting preprocessor Dereverb Decay to 0.400000 -- CODEC SPEEX: Setting preprocessor Dereverb Level to 0.300000 asterisk: symbol lookup error: /usr/lib/asterisk/modules/codec_speex.so: undefined symbol: speex_decode_int I can confirm that I have speex and speex-devel...

...windows crash dialog :( .. But apparantly it crashed at >> that exact spot several times. > > Hmm... Can you tell me what bit-rate/sampling rate you're using? Is VBR > on? Other options? 16khz (wideband) VBR (VAD and DTX off), passed through preprocessor (VAD, DENOISE, AGC and DEREVERB. AGC level set to 20000). VBR_QUALITY and COMPLEXITY are userconfigurable, I'll ask and see what he's set them to. I must admit I'm a bit stumped as to why it's just this one user that has this problem :( I've been completely unable to replicate the problem here. I've ad...

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

...eems OK. It's not clear if preprocess is actually doing anything. If I turn AGC on, the sound level becomes almost inaudible. When I print the control parameters (the defaults), I get: DENOISE = 1 AGC = 0 AGC_LEVEL = 1174011904 AGC_INCREMENT = 12 AGC_DECREMENT = -40 AGC_MAX_GAIN = 30 VAD = 0 DEREVERB = 0 NOISE_SUPPRESS = -15 QUESTION number 1: Is there a guide to "tuning" the AGC? Is there a document that tells what they really mean and how to adjust them? QUESTION number 2: I see that VAD, DEREVERB, DENOISE, ... have values of 0 or 1. The documentation says that 1 means ON and 2...

...t 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 preprocessor Dereverb Decay to 0.400000 [Apr 13 20:15:28] VERBOSE[1612] codec_speex.c: -- CODEC SPEEX: Setting preprocessor Dereverb Level to 0.300000 [Apr 13 20:15:28] VERBOSE[1612] translate.c: == Registered translator 'speextolin' from format speex to slin, cost 1 And whatever does startup doesn'...

...works basically 100% of the time. * Zero the sample data if the maximum sample in a frame is less than 4% of saturation or 20% of the maximum sample yet seen. It's about 8 lines of code. I'm using the 32KHz ultra wide band mode with 16 bit sample data and am setting all of AGC, VAD, DEREVERB and DENOISE to 1 using speex_preprocess_ctl(). AGC_LEVEL is set to 20000.0. Any thoughts? Andy

...ay not care about those. In any case, that's the main difficulty with speech enhancement because you've got all kinds of noise, and you never know what the mic recording level is. > I'm using the 32KHz ultra wide band mode with 16 bit sample data and > am setting all of AGC, VAD, DEREVERB and DENOISE to 1 using > speex_preprocess_ctl(). AGC_LEVEL is set to 20000.0. Are you using a frame size in the 10-20 ms range? Jean-Marc

...ly different by aim? If they overlap, will CELT support the same features as SPEEX? If not, Is there an estimated release schedule for the stable SPEEX 1.2 version? is it still maintained? And also, what is the current status of the SPEEX pre-processor, and more specifically VAD, AGC, AEC, denoise, dereverb, etc? what is the right way to use? I will be very happy to help including testing and coding on both projects, both on Windows and Linux (CentOS is my favorite...). 10x, Shlomi -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/opus/att...

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