search for: lsps

...point should I just scale them with the appropriate constants from arch.h? 2) If so, which scaling should I use? Taking a very specific example, how should I change to fixed-point the expression below? qual_change = -.00001*st->abr_drift/(1+st->abr_count); For example, when calculating LSPs I think I should use LSP_SCALING. But in the case above, which scaling must I use? The float constant is -1e-5, a very small value to be represented in fixed-point using a 16 bit value, effectively yielding a zero if I just multiply it by the appropriate scale factor. 3) In arch.h, shouldn...

Hi folks, My wife and I are taking a long weekend to celibrate our anniversary. I won't be around again until Wednesday to answer email or do anything else on Vorbis. Yeah, I know, I usually answer my email once a month anyway (so likely no one would notice me being gone), but just so folks know if anything really juicy comes up :-) I'll be merging my latest branch with mainline

Hi, I would like to know which method uses Speex to conceal the loss of packets. I've reviewed the code and haven't found anything. Thanks in advance. Iago Soto. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://westfish.xiph.org/pipermail/speex-dev/attachments/20040614/bfa135e0/attachment.htm

Dear Speex developers, I think I found a typo in libspeex/preprocess.c (that still in the SVN version too). Please correct me if I would be wrong. Patch is attached. (Yours :parenthetically &dezzy) -------------- next part -------------- A non-text attachment was scrubbed... Name: noise_var.patch Type: text/x-patch Size: 518 bytes Desc: not available Url :

Dear Speexers :-) I am trying to change the frame size from 20 ms to 10 ms, I did that by changing the value of the frame_size from 160 samples, to 80 samples in the sampleenc.c file. The number of frames increased as expected, but the size of the encoded stream of each frame remain the same! For example, if I use quality mode # 8 (corresponds to 15 kbps), the encoded streams size in bytes equals

I've not so much bandwidth to add channel coding but i've few bytes to spare for error detection. With a polynomial CRC-8 i've already more than 99.6 % to detect a burst error in a frame. So let's suppose the critical fields of Speex are: Wideband bit Mode ID LSP OL pitch OL pitch gain OL Exc gain So my plans are to calculate a CRC on these fields for each frame i send, then if i

Hello, I am running SAMBA 2.0.7.0 on AIX 4.3.3.0 I have a 1 Tera Byte filesystem on AIX made available to NT and MAC. There is heavy IO activity on this filesystem and all of a sudden the NT's and MAC's can't read or write any file on this shared filesystem. Also AIX is running out of memory whenever this happens and files cannot be copied onto the said filesystem even at unix

In order to develop a Voip application, today i should make it robust to bit-errors over wireless networks. This is an actually lack of Speex, infact what i've understood is that if a packet arrives corrupted, i must pass NULL to the decoder in order to let it know. My target is to use UDP (with checksum field disabled) and exploit also corrupted packets giving them to the AMR codec. Otherwise

Hello, Jean-Marc Valin schrieb: >>I am planning on creating a steganographic extension for speex/CELP. >>Since speex/CELP is lossy, there should be quite many bits that one >>can use for hiding data. > > Quite the opposite. Speex uses very few bits, so every bit you corrupt > is likely to be heard. You would need to use "fractions of bits" at a > time.

During the interesting interview that binaryfreedom has made with Monty and Jack, Monty mentions cascading, a feature that will be added, quote: "Cascading is the ability to make multiple passes through the frequency spectrum, iteratively filling in more detail, like a progressive jpeg". What are the advantages of something like this - does this generally improves quality or is it used

...ring in the power-spectrum domain */ for (i=0;i<st->lpcSize+1;i++) st->autocorr[i] = MULT16_16_Q14(st->autocorr[i],st->lagWindow[i]); /* Levinson-Durbin */ _spx_lpc(st->lpc+1, st->autocorr, st->lpcSize); st->lpc[0]=(spx_coef_t)LPC_SCALING; /* LPC to LSPs (x-domain) transform */ roots=lpc_to_lsp (st->lpc, st->lpcSize, st->lsp, 15, LSP_DELTA1, stack); /* Check if we found all the roots */ if (roots!=st->lpcSize) { /* Search again if we can afford it */ if (st->complexity>1) roots = lpc_to_lsp (st-&gt...

http://www.uniras.gov.uk/vuls/2004/236929/index.htm ----Quote---- "The impact of this vulnerability varies by vendor and application, but in some deployment scenarios it is rated critical. Please see the vendor section below for further information. Alternatively contact your vendor for product specific information. If exploited, the vulnerability could allow an attacker to create a