similar to: Exc CB Search very little Question

Hi, Jean-Marc Valin wrote: > Not sure I understand your question. Change the order of what within what? In cb_search, we iterate nb_subvect times over a codebook, finding nb_subvect codebook entries to quantize the excitation signal. After finding these nb_subvect codebook entries, they're written into the stream: /*save indices*/ for (i=0;i<nb_subvect;i++) {

Hi, Jean-Marc Valin wrote: >> 1. What is the point in multiplying a codebook index with some number >> ant adding a loop variable to it as done in the exc unquant function. >> for (j=0;j<subvect_size;j++) >> exc[subvect_size*i+j]+=s*0.03125*shape_cb[ind[i]*subvect_size+j]; > > That's just how you represent a 2D array in C: the codebook has

Hi, Jean-Marc Valin wrote: > How about this: the codebook search gives you the N best (in order) > combinations of entries for the current sub-frame. You can simply > compute a one-bit checksum on all the codebook entries and choose > which of the N-best to use based on that and the "message" you have. So you're suggesting, I can either write into the stream: -

Hi, Jean-Marc Valin wrote: > Well, you could change the order in the encoder as long as you reverse > it in the decoder as well. Ok, I see that in the split_cb_shape_sign_unquant function, that each coefficient is tied to it's position in the nb_subvect exc coefficients. Honestly, I have problems understanding what exactly the codebook search works like. If you have the time to to

Hello, I recently measured the distances ndist[0][nb_subvect-1] which are used to make the decicion, which codebook entries are to be used in libspeex/cb_search.c (function split_cb_search_shape_sign). For that I took a couple of audio books (all german speech), downsampled the tracks to 8kHz and encoded them with "speexenc -n --bitrate 15000 ..." (I used svn revision 11825). Usually,

Hello, Is it possible to adjust the level of the denoiser ? In an old beta, before you change the aggressiveness of the denoiser, it works very well with the noise of a car, a road etc... but not now. The AEC too works very well in a old beta, but now, I think there is a problem... I have tested it with the same sound card (WB 16000). In any case, your project is the best VOIP library in this

Hello, I do test runs of speex using speexenc -n [name].wav [name].spx The wav-files (6 different speech files) hereby are sampled at 44100Hz. Most interestingly, all Frames have SubModeID 5. I haven't tracked the Assignment of the SubModeID through the source code, so I just wanted to ask, if I can assume "speexenc -n" to use SubModeID 5 always? Ciao, Bj?rn -- You will

Hi, Jean-Marc Valin wrote: >> I haven't tracked the Assignment of the SubModeID through the source >> code, so I just wanted to ask, if I can assume "speexenc -n" to use >> SubModeID 5 always? > > Only if you never change the bit-rate. But speexenc -n was a dumb idea > in the first place... I know ... Thats why I downsampled the WAV-File to 8kHz (I got

Hello, I just checked out the latest version of speex and I want to compile it. The INSTALL file says that's easy: bjoern@deimos:~/studium/beleg/resources/svn/speex$ cat INSTALL Installing Speex is as easy as: % ./configure [--prefix=<install-path>] % make % make install Note that if you are using the code from SVN, you will need to run "autogen.sh" instead of

Bj?rn, I would be very interested in looking at your data and the R file. Actually, I think a lot of people would. You might want to post it on a website... CB -----Original Message----- From: speex-dev-bounces@xiph.org [mailto:speex-dev-bounces@xiph.org] On Behalf Of Bj?rn Thalheim Sent: Monday, September 11, 2006 4:43 AM To: speex-dev@xiph.org Subject: [Speex-dev] Distances in codebook

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Hi, I noticed that, when working with R on a command line, I cannot enter anything into the command line which is longer than 1023 characters. If I input sth longer, it'l be just cut off at this lenght, and a "+" will be presented to me on the command line. It's not as bad since I can copy'n'paste commands longer than this with newline characters in between onto the

Hi , I am playing the speex file while decoding it through the sound card . How do I programmatically stop it in the middle while its playing any suggestions??????? Thanks and Regards Naga Praveen N -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20060525/a969b5df/attachment.htm

Hi I want to implement speex in the project I working on, is it possible? I use Symbian, so, is there C++\Java speex for phones? Regards Thabang --------------------------------- Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls. Great rates starting at 1?/min. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, I would like to run a script over a speex file which determines, how long the speech contained in the speex file is. So I run through the ogg file, skip the first two ogg _pages_ (speex header and comment header, both contain IMHO only 1 ogg _packet_), and then count in any ogg page the number of the ogg _frames_ (which, unless I used -nframes while encoding, which I did not), and multiply

Hello, I noticed that for one specific Speaker, there are codebook entries in all codebooks, that "fit" the speaker. So if one had a look at a histogram of the used codebook line numbers for one speaker, the histograms would look very much the same for different speech samples (of course, the speech samples should be long enough, more than a minute of speech ought to be sufficient). I

Hello Jean-Marc and all, I recently had a talk with somebody about CELP. He said, there is this federal standard 1016 (4.8kbps) with a reference implementation of the Department of Defense (only on Sun, unfortunately, if I got this right). This one is noticed in the manual already. He also said, since there is this implementation of the DoD, nobody would voluntarily re-implement CELP. If I read

How about this: the codebook search gives you the N best (in order) combinations of entries for the current sub-frame. You can simply compute a one-bit checksum on all the codebook entries and choose which of the N-best to use based on that and the "message" you have. Of course, there will be cases where all of the N-best match to the same checksum, but that's what error-correcting

Hello, The denoiser was good with a car noise or a raod noise before the r11739. But for some situation, the actual version is perfect. That's why I think that if we can adjust the agressivity of the denoiser, we can respond to all of the situations. Maybe two parameters should be enough : high or low. For the AEC, I have to test with older versions because it's another person that

Hi, I am using speex 1.2beta2 on a 24bit DSP that has a severe program and data space limitations. I am only interested in the speex decoder for 11kbps narrowband implementation. I am using the following parameters and structures 160, /*frameSize*/ 40, /*subframeSize*/ 10, /*lpcSize*/ 17, /*pitchStart*/ 144, /*pitchEnd*/ /* 11 kbps medium bit-rate