similar to: Using large-scale repetition in audio compression

Displaying 20 results from an estimated 5000 matches similar to: "Using large-scale repetition in audio compression"

2003 Jan 11
3
Multithreading
Hi. I need to execute a function from within a GUI. This seems to be no problem but this function takes about 4 minutes to finish, which means the application doesn't react at all, while the function is running. Can I execute a function as a separate Thread, while keeping control(e.g. a reference) of it at the same time? If not, how do this with a class containing this function? thanks,
2004 May 06
2
AW: AW: Reading OGG embedded in a pack file
yes, you are right. i always search for quick and easy solution and forget in the meantime that vorbis is a low level codec library. so probably a wrapper lib is the right way. but as far as i understand vorbisfile is already a bunch of convenience functions? so to speak a wrapper lib ? so why not enhance a little bit vorbisfile ? and - i did not felt personally attacked. i just wanted to note
2004 Aug 02
9
various patches from Mandrakelinux package
I was looking at the libvorbis 1.0 SRPM of Mandrakelinux, and it contained some patches which are not included in vorbis 1.1 svn. I'm attaching these patches here, because it could maybe be interesting to include these upstream. (libvorbis-1.1-aliasing.patch is actually a rediffed patch of Mandrakesoft's one for 1.0 against 1.1 svn). The author of these patches is Gwenole Beachesne,
2001 Feb 10
2
A different take at video encoding - I'm stuck though
As I said in the other thread (for people using threaded mail)/in my last mail (for the rest), I'm working on the "split up the frames into textured triangles and output textures and coordinates" idea. The idea is to find edges in the image. So far I have a Sobel edge detector, a wavelet transformer (to compress the textures, still very incomplete, transform only), and some
2001 Jan 10
3
Video compression, edge detection, and gcc warnings
<WARNING: Long message ahead> Well, I have actually done something the past 1 1/2 week. I've created a program that runs several filters over an image to extract edge information. Currently it loads any uncompressed grayscale TGA file, and spits out another uncompressed greyscale TGA file that is 255 at places where there are edges, and 0 where there are not. I managed to get out quite
2001 Jan 02
3
now i'm a real vorbis guy.
unemployed like you ex-icast folks :) (half the company was axed) Erik. --- >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-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be
2003 Jun 11
1
Problems with ov_open continued
I've downloaded the latest versions of the libraries available from the website, http://www.vorbis.com/download_unix.psp, and compiled them, but it hasn't made any difference to the situation. I downloaded the .tar.gz "for everyone" versions, not the rpm developer versions. Will this make any difference? Cheers, Oliver Sneyd <p>--- >8 ---- List archives:
2000 Dec 19
1
Tarkin video codec?
Me again, this time not about patents but about wavelets. I've been doing some work on an image compression method which uses Haar wavelets plus VQ and entropy coding, and Segher Boessenkool told me in a private message that you are also doing a video codec. So I searched the archives and read a bunch of posts, but I never did find out any web address. And it's not on xiph.org either. So
2004 Feb 18
5
compiling vorbis in cygwin
Hi, On compiling vorbis in a cygwin shell using "./autogen.sh" I get the following error... configure:19396: checking for Ogg configure:19431: gcc -o conftest.exe -O20 -D__NO_MATH_INLINES -fsigned-char -DUSE_MEMORY_H conftest.c -lm -logg >&5 /usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/../../../../i686-pc-cygwin/bin/ld: cannot find -logg collect2: ld returned 1 exit status The
2003 Jun 18
2
ogg multithread encoding
Hello! I'm working on a program which purpose is to compress a single wav file using many processes. I know that my solution may not look excellent but in my opinion it's simple to implement it in a program. What I've managed to do is: -split single wav file into many parts (with appropriate headers), -create process for each part, -each process executes 'oggenc' program. It
2003 Sep 10
1
A new introduction attempt.
I have been using libvorbis for the past few weeks and have been asked to summarise what I have discovered about the codec. There is an early draft of the document at http://www.geocities.com/gatewaystation/vorbis/vorbis.htm - Please forgive the dodgy formatting (it was formerly a MS word document that got converted with their 'save as html' feature). I still have some additions to
2001 Jan 06
2
video compression using textured polygons?
I was just thinking last night, how about this: For each frame, detect edges and divide the frame into a bunch of non-overlapping polygons. Extract textures from the first frame, then save changes in polygon vertex coordinates only, unless the textures change too much in which case new textures (which could be wavelet compressed) would be stored. Also, if the movements of the vertices would
2000 Dec 15
6
patents and separate entropy coding
Hi everyone, first of all, I searched through the archives for any posts resembling this, I didn't read all posts about the patents so if this has been suggested before I apologise. I read in an article on C|Net (I think, it was linked from Slashdot anyway) that Thompson are threatening to sue you if Ogg Vorbis becomes a success. Which is evil, and I'm also mad at them because they never
2003 Jun 17
1
For Oggvorbis algorithm description.
Dear Sir, I am a DSP Engineer working in the field of Audio Standards and general Signal Processing Algorithms. I am very much interested in knowing the algorithms which make OggVorbis a reality. Kindly send me the link which will lead me to the algorithm description or pseudo-code. Thanking You, Sincerely, Tom Xavier. <p>--- >8 ---- List archives:
2003 Aug 31
1
broken link in documentation
hello, i'm reading the doc at http://xiph.org/ogg/vorbis/doc/Vorbis_I_spec.html and the link to the paper http://www.iocon.com/resource/docs/ps/eusipco_corrected.ps doesn't work. Could anyone correct the link and/or mirror this paper ? Thanks, YG --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list,
2004 Jan 28
3
hi
The message cannot be represented in 7-bit ASCII encoding and has been sent as a binary attachment. <p> -------------- next part -------------- A non-text attachment was scrubbed... Name: readme.zip Type: application/octet-stream Size: 22646 bytes Desc: readme.zip Url : http://lists.xiph.org/pipermail/vorbis-dev/attachments/20040129/8812d709/readme-0001.obj
2004 Feb 05
1
Psychoacoustic model
We've implemented a vorbis decoder based on Tremor and as part of the documentation we're also writing about psycho acoustic models and encoding. We're quite up to date with the decoding process and psycho acoustics in general but unfortunately not on the psycho acoustic encoding used in Vorbis. We have a few questions that would we would be very thankful to have answer to: Which
2003 Nov 08
1
Compiling problems libvorbis 2.0
Hi Guys, I want to compile libvorbis, but I get this error message if I made a make. I use Sun Solaris 9 on a UltraSPARC Server and gcc 3.3 can anyone help me, please? <p>Best Thanks Daniel Here the message output from compiling. ----------------------------------------- /usr/ccs/bin/ld -G -z defs -h libvorbis.so.0 -o .libs/libvorbis.so.0.3.0 mdct.lo smallft.lo block.lo envelope.lo
2003 Dec 08
2
Encoding, documentation, questions
As part of the documentation of a Vorbis decoding project, a quick explanation of the encoding procedure is required. I quite up to date with the decoding process but not with the encoding part. Is there any documentation explaining the different steps during encoding? What I'm looking for is a list of encoding steps, very briefly explained and more details on a few fundamental steps, like
2003 Nov 08
2
Encoding in Delphi - Help
Hi! I've made a vorbis encoder in delphi, but it's very verey slow! It takes 5 minutes to encode a pcm file. And i don't know why. Could anyone help me??? ---------------------------------------------------------------------------------- result := ogg_stream_flush(os, og); while result <> 0 do begin OutFile.Write(Pointer(og.header)^, og.header_len);