search for: liebchen

Displaying 6 results from an estimated 6 matches for "liebchen".

2003 Sep 22
1
Can't get simple config working!
...ail(u1002) exten => 1002,102,Voicemail(b1002) exten => 1002,103,Hangup And this is my sip.conf file. [general] port = 5060 bindaddr = 0.0.0.0 allow = all dtmfmode = inband context = from-sip [1001] username = 1001 type = friend context = from-sip mailbox = 1001 host = dynamic secret = liebchen nat = 0 [1002] username = 1002 type = friend context = from-sip mailbox = 1002 host = dynamic secret = liebchen nat = 0 Any ideas? Thanx, Mike.
2013 Aug 27
0
[LLVMdev] Adding diversity for security (and testing)
...ed a "just-in-time code reuse" attack that repeatedly uses a memory disclosure and JITs an attack based on the results [1]. So while it does make the attackers job harder, it doesn't prevent such attacks. 1. Kevin Z. Snow, Fabian Monrose, Lucas Davi, Alexandra Dmitrienko, Christopher Liebchen, and Ahmad-Reza Sadeghi. Just-In-Time Code Resule: On the Effectiveness of Find-Grained Address Space Layout Randomization. In Proceedings of the IEEE Symposium on Security and Privacy ("Oakland") 2013. <http://cs.unc.edu/~fabian/papers/oakland2013.pdf> -- Stephen Checkoway
2007 Dec 31
1
In which release did FLAC support 192kHz sample rate?
...file causes the player to crash, while the 24-bit 96kHz file simply refuses to play. Hopefully a future firmware update will add support for 24-bit FLAC files. Note: This article referenced that FLAC 1.1.3 was used. 2. Lossless and Perceptual Coding of Digital Audio Peter Noll, Tilman Liebchen Technische Universit?t Berlin, Fachgebiet Nachrichten?bertragung (formerly Fernmeldetechnik) noll@nue.tu-berlin.de, liebchen@nue.tu-berlin.de Compression Results The following, the compression ratio is defined as C = Original File Size / Compressed File Size Table 2 compares the c...
2001 Jun 15
2
Difficult sample for vorbis w/ audible artifacts
...is a 9 second clip of the track where the artifact is most apparent, drone_short.pac is a 1 minute clip of track. The sample is from the song "Drone" from "Autechre - Peel Session". The longer clip is compressed with LPAC which can be found here: http://www-ft.ee.tu-berlin.de/~liebchen/lpac.html Basically, what happens is when encoding this file at lower bitrates with vorbis beta 4 there is some very bad pre-echo on the sharp attacks. I have been told that pre-echo handling is still being worked on though so maybe there is not much that can be done yet. I was told something ab...
2001 Mar 21
3
bitrtate peeling and lossless compression
I just read some of the discussion on the list about 'bitrate peeling' and remembered an interview of Monty that I have read recently. In it he says that Vorbis uses MCDTs <sp> and that these are theoretically reversable. And now, I learn that theoretically we can use bitrate peeling to make smaller files from larger ones, and that leads to my question. Could I theoretically
2013 Aug 26
10
[LLVMdev] Adding diversity for security (and testing)
Greetings LLVM Devs! I am a PhD student in the Secure Systems and Software Lab at UC Irvine. We have been working on adding randomness into code generation to create a diverse population of binaries. This diversity prevents code-reuse attacks such as return-oriented-programming (ROP) by denying the attacker information about the exact code layout. ROP has been used is several high-profile recent