similar to: range coding experiments?

Dear all, I have been going through below mentioned update. http://web.mit.edu/xiphmont/Public/theora/demo.html I found this line- Timothy Terriberry estimates a simple self-training range-coding backend could be reasonably expected to decrease bit usage overhead by 15-20%. Is it really true? I found one implementation.... http://svn.xiph.org/trunk/ghost/libentcode/ Did anyone verified this

I have developed a flexible arithmetic coder implementation and I am now looking to incorporate it into a compression system for some proper testing. It is my intention to incorporate the coder into the Vorbis codec to attempt to improve on the current Huffman tree system. It would be useful if someone could point me at the main c and h files that deal with the entropy coding as I am currently

I think what i did is the same with you except i use make rather than make -sj8, and I did as root. And I do as you wrote again: root at hurricanetong-VirtualBox:/home/hurricanetong/xapian-1.2.17/xapian-core-1.2.17# ./configure [...] root at hurricanetong-VirtualBox:/home/hurricanetong/xapian-1.2.17/xapian-core-1.2.17# make -sj8 Making all in . Making all in docs Making all in tests root at

Hi, I have create one vm by libvirt api, And I goto virsh, when I doing save the domain, the following errors occurred: virsh # save demo2 /home/wk/libvirt/demo2.save error: Failed to save domain demo2 to /home/wk/libvirt/demo2.save error: internal error unable to send file handle 'migrate': No file descriptor supplied via SCM_RIGHTS virsh # list Id Name

I understand Asterisk is more like a B2BUA. But when this INFO request is sent to asterisk, asterisk is supposed to bridge the request to the other endpoint, right? In what situation, it decides to send a reply; in what situation, it decides to bridge the request? What is the role of gateway in SIP world, a proxy, a B2BUA or something else? Thank you, Wei Date: Fri, 18 Mar 2005 12:51:28 -0600

Dear Everybody: I'm doing my usual "how does that work in R" thing with some Stata projects. I find a gross gap between the Stata and R in Cox PH models, and I hope you can give me some pointers about what goes wrong. I'm getting signals from R/Survival that the model just can't be estimated, but Stata spits out numbers just fine. I wonder if I should specify initial

I uninstall xapian1.3 and install xapian-1.2.17 but i still failed hurricanetong at hurricanetong-VirtualBox:~/workspace$ g++ `xapian-config --cxxflags --libs` demo2.cc /tmp/cc2wsfDJ.o: In function `main': demo2.cc:(.text+0x4a): undefined reference to `Xapian::WritableDatabase::WritableDatabase(std::basic_string<char, std::char_traits<char>, std::allocator<char> >

Hi, I'm just wondering if it is planned to include the Lapack routine DGESDD (and friends) in R-1.4.0? This is faster (supposedly by a factor of ~6 for large matrices) than DGESVD which is currently (R-1.3.1) called by La.svd. And if it is not in the plans yet, is there a chance it could be? I've added it to my local version of R-1.3.1 and so far see a factor of 4 improvement over

We encouter a situation where we need to use SIP info to convey infomation for one end point to another endpoint. I use asterisk to do the test and find asterisk does not forward the SIP info to another endpoint, but act as UAS and returns a 4xx error message. I think asterisk is not right to handle this SIP info message. In RFC 3261 Page 70 "This protocol is designed to be extended.

So I have a problem. A customer of mine wants a PBX, owns an office building. I want to sell him on asterisk. He has 4 tenants. I am using my asterisk box to simulate it. My asterisk box has a TDM400P card, not a PRI card. Don't know if it makes any difference. Anyway, I want to route incoming phone calls to different contexts based on the phone number being called. Here is my

---------- Forwarded message ---------- From: digital design <developer.fpga at gmail.com> Date: 21 March 2011 13:38 Subject: Re: [theora] alghorithm of working encoder in libtheora To: bens at alum.mit.edu Cc: Reply-All at xiph.org On 18 March 2011 23:15, Benjamin M. Schwartz <bmschwar at fas.harvard.edu>wrote: > On 03/18/2011 01:44 PM, digital design wrote: > > Now i

I want to analyse compressed data between VQ and Huffman coding steps. Where in source code can I access to data massive for this goal. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/vorbis/attachments/20090916/4529e42d/attachment-0001.htm

There is bit space in Bitstream Header to put Huffman codes in. However, This space can take only 80 kinds of Huffman code set. And This space is divded into DC Huffman code set and AC Huffman set, and There are only 16 choices in each DC and AC Huffman code set. If we want to use this space, we find out best(or proper) performance 80 frequency counts(Huffman code sets) from tens thousands of

Hi, suppose I do: b <- matrix(1:9,3,3) bname <- "b" now dim(b) returns [1] 3 3 and dim(bname) returns NULL is there a function to pass bname to such that dim returns the dimensions of b? like dim(somefunc(bname)) returns [1] 3 3 does 'somefunc' exist? daver +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |David Richmond It

Hi, I've restarted my Elsa/LLVM project after three months of having real life intrude. I upgraded my LLVM source to the current trunk. I had to make a few changes to my source, e.g. LLVMFoldingBuilder became IRBuilder and several instances of "new" became "Create". Now, a test case that previously succeeded fails. I run the following script: #!/bin/sh if [ 1 -ne 0 ]

Hello, I am a computer engineering student and compression hobbyst and have recently developed a new entropy coding algorithm. It can be used to achieve compression proper of arithmetic coders at very high speeds -almost like Huffman codecs-. Since it could be of interest to you, I send it as an attachment -code and technical report-. Please, drop me a line in case you have any doubt or

Following on from my previous missive - now apparently resolved :D I now have another problem. This time with Sage Line50 Ver11. It appears to have installed OK and seems to link to the network share drive (G:), however it will not allow me (or anyone else) to log in. If I use any good username, it comes back with "invalid password", even for users with no password. If I use any

hi, virt guys, This is Hongqing from Fedroa QA team. I try to forward the guest installation logs to host with virtio. I have used virsh edit <guestName> to add a channel, it works fine. I think it would be better if I can initialize it when I create the guest using virt-install, and virt-install also offers the option, I have tried below, but it does not work. virt-install

Hi, all I am studying the ogg-vorbis algorithm but I have less knowledge about the codebook structure of vorbis. After tracing the release source code, I found it doesn't use huffman tree to decode the huffman code instead of using a special mapping and pre-look. The memory requirement seems similar with huffman tree decoding. Could anyone tell me how the vorbis huffman decoding works

Good day! I'm creating HDL IP CORE (for using in FPGA) for theora encoder (now only I-frames). I don't undestand one moment. Now i develop such stages: 1. From RBG(byer) to YCbCr converter 2. DCT processing (8x8 pixels blocks) 3. Quantizator of DCT coeff. 4. Zig-Zag of quantized DCT coeff. and now i have uresolved last stage of compression - how i must send 8x8 blocks to huffman