similar to: questions about quantization and motion compensation

Dear Stefan, In the paper "Improved Forward-Adaptive Prediction for MPEG-4 Audio Lossless Coding", a non-linear compander is applied to the parcor coefficients prior to quantization. This compander is designed in order to minimize quantization error, especially for magnitudes close to unity. If you determine the typical distribution of magnitudes of the LPC coefficients, you could

Hi. I have been talking with Psytel MPEG-4 AAC developer (www.psytel.com) about various compression formats, and to make it short he said that one of the main drawbacks of Vorbis is its vector quantization - it introduces more error then other quantization methods (like non-uniform scalar quantization, if I got it right), probably used in AAC and other similar codecs. I know vector quantization

So, my use case is : 1. lot of connections over dial-up lines 2. need to transfer safely A SINGLE BZIPPED FILE to the server 3. if dial-up line fails, it's automatically restarted after 5 minutes and transfer start again I heard about the --partial option in order to keep the partial transferred file. I thought that rsync will apply his incremental check and update alghoritm on that

Hi I am a student and working on Speech Coding and Speex. I just want to know where to get the document describing subvector quantization of innovation. Is there any document which can help me know how C code works or any paper exactly explainin the idea? regards Faisal __________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger.

Hi, I'm studying at ETH Zurich and want to use a pyramid vector quantization for my semester thesis. Unfortunately, I have some troubles with generating the codebooks for high dimensions. For vectors with dimension bigger than 12 it takes such a long computation time to generate. I thought maybe you could help me out with a efficient way to do this? Is there some code available? Thanks for

Hi, I've tested Theora on an HD-ready material, with quality 7, single pass. Resulting bitrate was 1.8Mb/s. Most parts of a movie encoded this way look fine, usually better than a DVD, and in daylight scenes, have no noticeable artifacts at all. But it seems that red surfaces are too much compressed; blocking artifacts are clearly visible on them. Also, white people have slightly smeared

Hello, I have improved quality for -l1->-l4 settings.I have properly set up the wavelet coeff threshold of the dead-zone according to the different wavelet subbands, I have then saved another 1Ko per .nhw files without noticeable difference and so I have raised again the quantization.The reconstructed images have now a better precision and still a good neatness. Update at:

Hello, Really hope that I am not disturbing you, but for those interested, I have improved quantization in NHW, and so now it is visually better, with a better balance between neatness and precision. As it is a small modification and correction, I did not release a new version but I have updated the binaries. More at: http://nhwcodec.blogspot.com/ I know I am publishing a lot of incremental

Hi Users, Administrators and Pavel Jezek, You prefer chan_h323 from asterisk tree and it's of course that use channels by tree is very good. But in 1.2.x, the chan_h323 is very simple and the chan_oh323 is so bad. And I work with chan_ooh323, that it's too from Digium and work good! And I am Studing one possible change to Asterisk 1.4.x , but in 1.4.x the oh323 channel don't have more,

everyone Here: How do you do! dtrace is interesting. I am studing how to write dtrace script and analyze situation. I read dtrace_example.pdf and 819-6959.pdf document more than five times with careful. because I am newbie to studing dtrace.so I still don''t know how to begin. for question: 1. What consumes time? 2. Which system call(s) consume(s) time?

Hi, I try to make an analyses to discover what is the time that an area begin to have spacial autocorrelation. And after, what is the number of individuals responsible for this autocorrelation. The main idea is to discover if exist a contamination of a quadrat from others quadrats and how is the population needed to make this contamination. This is very common to use automata to simulate

hi,usRs,i am studing the R programming,but i can not get the point abut the difference between UseMethod and NextMehod.i have read the manual and try to find the solutin from internet,but i still not master it well.so anyone can give me a guide?it will be better to show some examples . thank you !

hi! I'm studing samba as PDC (with ldap backend) and I would know: - gid and uid are useful in samba? in other words: if pdc admin knows users' uids, he can recovery some wrong situations ? Example: if a user was cancelled and then readded, if his uid changes implies some troubles with shared files? NT mantains, after deletion, association between shared file and uid user and so if

Hello, Why Ogg compression and quality are better than Mp3 ? I'm studing Ogg Vorbis and Mp3 codecs for my thesis. Can you help me ? Tank you very much. Cristian Gagliardi. <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the

Hello, Why Ogg compression and quality are better than Mp3 ? I'm studing Ogg Vorbis and Mp3 codecs for my thesis. Can you help me ? Tank you very much. Cristian Gagliardi. <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the

Hello, I am studing Xen hypercall now. I found that hypercall is invoked via hypercall_page, which is only filled with (in no-hypervisor-kernel-mode ): mov $i, %eax int $0x82 ret Why not invoked the hypercall directly by "int $0x82" ? What''s the advantage of using hypercall_page? Thanks, Wu _______________________________________________ Xen-devel mailing list

Hi all, I'd like to quantize a variable to map it into a limited set of integers for use with a colormap. "image" and filled.contour" do this mapping inside somewhere, but I'd like to choose the colors for plotting a set of polygons. Is there a pre-existing function that does something like this well? i.e., is capable of using 'breaks'?

Hi Jonathan. I really, really hate to bring this up this late in the game, but I just noticed that your NEON code doesn't use any of the "high" intrinsics for ARM64, e.g. instead of: int32x4_t coef1 = vmovl_s16(vget_high_s16(coef16)); you could use: int32x4_t coef1 = vmovl_high_s16(coef16); and instead of: int64x2_t b1 = vmlal_s32(b0, vget_high_s32(a0), vget_high_s32(coef0));

I''m really newbie in roby on rails. I''m studing but I can''t find an answer to this question: I''m looking for the classic tamplate that I can found on every ruby-on-rails generated sites: I would like to use in my site I can found some already listed? -- Posted via http://www.ruby-forum.com/.

Is there any project which was recommende for reading it''s source for studing rails? such as typo ? -- Posted via http://www.ruby-forum.com/.