similar to: Echo cancellation Question?

Hi, The notch filter in AEC is only used to remove DC signal, and the time of convergence is not important, right? If so, I think preset value of notch_radius is too small, and it causes noticeable distortion(freq < 200hz cut). There is a picture in attachment to show signals under different radius in time-domain. By setting notch_radius to 0.999 for all sampling rates, I found better

Hi, But in fact, it really affects the voice quality. One of my tester says, "Is your mouth far way from the mic?" Could you explain why we should cut 200hz below? >The notch filter is specifically designed to cut below 200 Hz when >working in narrowband. In wideband, the cutoff is more around 50 Hz. The >reason is that in narrowband operation (irrespective of the

Hi Jean-Marc, You make that sound like its just a matter of meeting some arbitrary spec. Let's be more specific..... If you use narrow band voice down to deep bass frequencies: - 16 bit linear audio sounds good - alaw or ulaw sounds muddy - low bit rate codecs, like speex or G.729, sound awful. I assume QinBin only listened to some uncompressed audio in his evaluation.

I need to shrink speex so it will fit on an embedded processor along with some other code. The chip has only 20k of ram. I have done some work with libspeex.dsp by removing references to all modes but narrow band 8000 hz (submode 3). I used the defines: FIXED_POINT, DISABLE_FLOATING_POINT_API, DISABLE_VBR. I also removed the structures for the other submodes and the functions that they called.

Hi Jean-Marc, will you include these optimizations for minimal ram usage in the main version? Maybe if Peter sends a Patch... Thanks, Alain Jean-Marc Valin escreveu: > Sounds like you did most of what you needed to do. Using a coverage > analysis tool might help you remove bits of code here and there (e.g. > unused _ctl() cases), but the main part is done. About the preprocessor,

Hi, i am a newbie in linux. may i know how to setup kingsoft office using wine so that it can run properly in ubuntu? cos i installed it and can run it, but the problem is i can't seems to open a file and save file. Is there any extra setting needed to run it properly? I used this version of kingsoft office : http://download.famouswhy.com/kingsoft_office_2009 i heard that kingsoft office was

On 06/22/2011 04:57 AM, Arun Raghavan wrote: > On Tue, 2011-06-21 at 11:39 -0700, Arun Raghavan wrote: > [...] >> I'm also running this on x86 (x86_64, technically), and it's all >> floating-point, so I guess this is a regression somewhere. Will try to >> see if I can run it without any optimisations if possible, which I >> assume should serve as an adequate

Latest PCWorld mag had a nice writeup on Kingsoft Office software, which comes in 3 flavors, the lowest of which is free, so I d/l'ed it and installed it in Wine, version 1.4-1pclos2012--the latest version the pclos distro has. It seemed to install OK, but it won't open any file, and it won't open even a blank file so you could write on it. (Just looking at Writer, for the

On 06/22/2011 09:30 AM, Steve Kann wrote: > Speaking of AEC (thought not quite on topic for this thread), > > Has anyone on this list played with the GIPS code that google just > open-sourced? It looks like their AEC also has code to handle > differential sample rates, though I haven't really evaluated it > thoroughly. > > There is really a lot of code in the drop ?

First, I'd just like to thank the Speex community, and Jean-Marc especially, for their great work. I'm developing a VoIP library (which uses IAX, the asterisk protocol) as the network protocol. I've been putting off integrating Speex for a while, as things have been working pretty well so far with GSM. (for those interested, the code is at iaxclient.sourceforge.net). However,

Hi Jim, Actually, I don't see anything wrong with the internal structure having a different type than the interface, as long both types are big enough to hold the possible values (in this case 0 and 1). Though, as you pointed out, testenc needs to be fixed to use spx_int32_t instead of int. I'll change that. Jean-Marc Jim Crichton a ?crit : > st->highpass_enabled is typed

Hi I have been developing an audio application using Speex. To reduce the background noise in the captured audio I have enabled the denoise feature and set the noise suppression level to 60. Although the constant background noise is reduced but using denoise introduces a weird effect in the audio which can be described as 'Drain Pipe' effect. Has anyone faced a simiar issue with the

The notch filter is specifically designed to cut below 200 Hz when working in narrowband. In wideband, the cutoff is more around 50 Hz. The reason is that in narrowband operation (irrespective of the codec), you're not really supposed to have anything below ~200 Hz, but a lot of people forget that. Jean-Marc On 2010-03-03 02:40, brant wrote: > Hi, > > The notch filter in

On 03/03/2010 10:22 PM, QianBin wrote: > Hi, > > But in fact, it really affects the voice quality. One of my tester says, "Is your mouth far way from the mic?" > Could you explain why we should cut 200hz below? > We already said it affects the quality when the voice is compressed. Are you asking why that should be? Even with a simple form of lightly lossy

Hi everyone, I'm about to release version 1.2-beta1 (which I could have called 1.1.13), which includes many, many changes. It would help if everyone could give the svn version (http://svn.xiph.org/trunk/speex/) a try and see if it works fine. I'll check my email next week when I'm back from some vacations and if nothing bad has been reported, I'll make the release. Have fun,

Hello to everyone,... I am a new R ambitious user. I would like to be the first at my department using R, but I have encountered a difficulty during the last days that I cannot overcome reading help() and searching over the net. Problem: I have multiple files with financial data like the following (header included): E.g.: filename: AOL.txt aol.txt 4 3 5 3... filename: IBM.txt ibm.txt 6 2 5 2...

Hi, I just downloaded http://www.speex.org/download/speex-1.1.4.tar.gz and tried to build it but the file denoise.c seems to be missing from the archive. Can you fix this or is it better to get everything from cvs? Another question, when will a stable version of 1.1 be released. I'm interested in the preprocess features but I would also like a stable encoder/decoder :-) Best regards, Chris

Dear All, I have worked with R for some time. It's a great tool for data analysis. But it's too hard to inputing raw data manually with R (I don't mean importing data. R is good at importing data). Maybe it's not a focused topic in this list, but I don't know other place where I can ask the question. How do you do when inputing data from a paper material, such as

Hi, Has anybody some information on on the "Redundant audio data" header in the speex rtp payload? Is this header always present? Is its value always the same? Can it be modified through some speex_*_ctl function? Thanks, Emmanuel -- ------------------------------------------------------------- Emmanuel Wauters Tel : (+32) 11 30 13 30

On 06/04/2010 07:37 PM, Jean-Marc Valin wrote: > On 10-06-04 05:16 AM, Gurinder Singh wrote: > >> I have been developing an audio application using Speex. To reduce the >> background noise in the captured audio I have enabled the denoise >> feature and set the noise suppression level to 60. >> > There you go, don't do that. There's a reason