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Author Archive
Hackfest 110
Wednesday, September 28th, 2005Hackfest 100 Mortem
Thursday, September 15th, 200515 Sept 2005
Where is Everybody?
luke is contracting in reno
titus is dogsitting
ben garrison is sleeping
others said they’d be here, but they did not show
Since Last Time:
Vinny-
-poked around looking for scenegraphs
-panda3d would be good, but no Mac (sadly)
-options are ogre, and crystal space (more of a game engine)
Graham-
-nothing on Mused
-been working on SWIMM, trying to get MARSYAS to run on win32
This Time:
Vinny-
-play with Croquet (notes that it’s in Squeak- why it is so slow)
-wants to render words
Graham-
-get segmentation working
-refine to sample accuracy
-speed up a song by upping the onset rate
Mike-
-start school at UCSC
Realities:
Vinny-
-played around with Croquet -… it’s Squeak (slow and difficult)
-dragged around a full size card of Alan Kay (as a rabbit) and shot him with lasers
-Commotion is calculating save path – without full file pathname.
-no rendering just yet.
-submitted startup school app
Graham-
-fixed the frame by frame segmentation
-started working on zero crossing sample refinement
-didn’t finish
Songs of Hackfest, vol 1
Monday, September 12th, 2005What are the best hacker inspired songs? I’ve always liked You’re So Technical from the Magnetic Fields.
Suggest your favorite hack-oriented songs.
You have prosthetic wings
You drive a surveillance van
You’re always doing seven things
You write the code for brain implants
There are no papers on you
The law doesn’t cover what you do
You and your think tank entourage
Are all counterculture demigods
(C): You’re so technical, you go hacking around the world
You’re so technical, baby, Are you a boy or a girl?
You have some extra limbs
You look like a Swiss army knife (with wings)
Dance like a Hindu deity
Best friends with Timothy Leary (C)
You’re a Libertarian
The death of the Left was you
You look like Herbert von Karajan
You live underneath the zoo (C)
From the House of Tomorrow. The consummate fan Ernest suggests this character was based on the chimerical electronic pop musician and storyteller Laurie Anderson (homepage of the brave), who is coming to Ferst Center Theater (scroll down) in November!!
MIR book reviews
Saturday, September 10th, 2005Computer Music Modeling and Retrieval 2003 – Wiil, Uffe K. (Ed.)
Weird potpourris of composition, music retrieval, system architecture, and musicological research papers are entertaining, if you like that sort of thing. As with other sequence analysis domains, the Similarity Matrix is key. My favorites:
Real Time Beat- Estimation Using Feature Abstraction – Jensen and Anderson
Beat and tempo extraction is a core MIR problem. They present a straightforward probability-based approach. Results are OK but on not much data, it is always hard to tell how things like this will actually perform. To evaluate it, one can only implement it and test it versus others. As the problem and field matures formal evaluation procedures (mirex 2005 results!) will decide how they do in comparison. Interesting because I plan on implementing a beat extractor soon.
The Study of Musical Styles in Central Africa: the Use of Interactive Experimental Methods – Marandola
Musicologist describes the use of interactive computer techniques to learn the basic scale and tone structure of two native music traditions—the Hocket Instrumental Polyphonies of Ouldeme flutes (Paris), and the Vocal Polyphonies of Bezdan Pygmies (Cameroon). In the latter case, polyphonic pieces were recorded on multiple tracks and re-synthesized by the computer based on models of harmony. The performers would reject the models until they were somewhat accurate.
Evolving Automatically High-Level Music Descriptors from Music Signals – the power team Zils and Pachet
(pdf of a similar work, access to CMMR paper closed)
High-Level music descriptors, like the presence of certain instruments, tempo, genre, are difficult things for which to design algorithms. In this work, signal networks are built up from low-level descriptors (FFTs, filters, correlations, etc) and grown using genetic algorithms. They attack the problems of Sine+Colored Noise, Presence of Voice, and Perceived Intensity. Since these are not the hardest problems around, this isn’t earth shattering, but it is pretty cool.
Other interesting papers on physical modeling synthesis, structural patterns in pop music and self-organizing maps.
Hack Fest 11 Mortem
Thursday, September 8th, 2005Thursday, Sept 8 – no 11 – atlhack 11 photos
Found out there’s a python atlanta group that meets here.
Since Last Time-
luke – made a nethack bot sitbot – lives 999 turns – article on making your own
– io trick with nethack is much faster
titus – was at dragon*con, sent DMCA notice by MS
– attended cool piracy talk, will blog that
ben – re-did autograder interface, can make webwork module
graham – no projects, wrote an article about semiotics book
– found out about chuck music synthesis language, similar to supercollider on several platforms
vinny – found racer – open source racing simulation
stephen – implemented midpoint line drawing algorithm for graphics system
mike – started music notebook – for plans for songs lyrics
This Week-
luke- shelve nethack right now. get a better handle on interfacing to USB and bluetooth – write 2 drivers GPs- bluetooth, and USB scanner. USB snoop logfiles. learn about USB snoop format.
titus- if he gets eclipse working, will work on DNA project, windows product key generator, pkgen in haiku
ben- try to make a rules language ot generate point values for the tests based on rules. generate points according to a heirarchy and rules
stephen- tonight I just want to get double buffering working, possibly complete the midpoint line drawing for all cases
graham- point at mp3 file and chunk into little wav files
vinny- get glyphs rendering in contexts, maybe with animation
mike – My modest goal for today is to test out my new printer in linux and windows, test printer, and prepare recording setup for lyrics
Today’s Reality:
luke – can’t talk to network
titus – eclipse works! wrote an Invokatron example plugin, loads a custum file extension, loads into multi-page editor
mike – finished installing printer
ben – figured out how to write XML schemes, wrote schemas fro three the point assignment rules
stephen – double buffering is working, almost done with midpoint line algo, probably going to keep working
graham – segmenting the mp3 into wav, but not sure they are on correct segmentation boundaries
vinny – didn’t get stuff meant to do done. skype audio, links for python group
visit! one of our colleagues, the philosopher scientist Matt stopped by on his visit to Atlanta. He’s been writing articles on Epistimology, which if things ever clear up, should start helping us understand why we believe the things we do about science and knowledge.
todo items:
why is luke’s feed item not showing up in Atlanta Tech?
svn with project integration
titus – next week wants to get custom menus at the top for different operations
Hack Fest 11
Tuesday, September 6th, 2005Third hacking rodeo. Bring a fez to win a prize!
Maybe we’ll have A/V working this time.
Programming Reference
Monday, September 5th, 2005Atlhack Meeting Notes
Friday, September 2nd, 2005Notes from our occasional meetings for posterity.
1 SOH Start of Header . . . . 08-25-05
2 STX Start of Text . . . . . 09-01-05
3 ETX End of Text . . . . . . 09-08-05
4 EOT End of Transmission . . 09-15-05
5 ENQ Enquiry . . . . . . . . 09-22-05
6 ACK Acknowledge . . . . . . 09-29-05
7 BEL Bell . . . . . . . . . 10-06-05
8 BS Backspace . . . . . . . 10-13-05
9 HT Horizontal Tab . . . . 10-20-05
10 LF Line Feed . . . . . . . 10-27-05
11 VT Vertical Tab . . . . . 11-03-05
12 FF Form Feed . . . . . . . 11-10-05
13 CR Carriage Return . . . . 11-17-05
14 SO Shift Out . . . . . . . 11-24-05
15 SI Shift In . . . . . . . 12-01-05 snd
16 DLE Data Link Escape . . . 12-08-05 snd
17 DC1 Device Control 1 [XON] 01-12-06 snd
18 DC2 Device Control 2 . . . 01-19-06 snd
19 DC3 Device Control 3 [XOFF] 01-26-06 snd
20 DC4 Device Control 4 . . . 02-02-06
Apply to Startup School
Thursday, September 1st, 2005I could not be any more impulsively serious about this as I am right now. Let’s all go to startup school! The date is when we have to apply.
Research Tools
Tuesday, August 30th, 2005Citeseer
Hyperlinked CS research database. It also mirrors the papers linked from the web, which is quite useful.