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May 17, 2013
NOVAS - Astrometry
Naval Observatory Vector Astrometry Subroutines
> … is a software library for astrometry-related numerical computations
May 17, 2013
The Lethality of Loneliness
Loneliness, she said—and this will surprise no one—is the want of intimacy. Who are the lonely? They’re the outsiders: not just the elderly, but also the poor, the bullied, the different. Teach a lonely person to respond to others without fear and paranoia, and over time, her body will make fewer stress hormones and get less sick from them.
May 15, 2013
Drawing Dynamic Visualizations
This talk presents a tool for drawing dynamic pictures — creating data-driven visualizations, like D3, but via direct manipulation of the picture itself, like Illustrator.
May 10, 2013
HackRF
HackRF, a software radio peripheral A single software radio platform can be used to implement virtually any wireless technology (Bluetooth, GSM, ZigBee, etc.).
HackRF project goals:
- transmit and receive
- operating frequency: 100 MHz to 6 GHz
- maximum sample rate: 20 Msps
- resolution: 8 bits
- interface: High Speed USB
- power supply: USB bus power
- portable
- open source hardware and software
- low cost
May 8, 2013
Identity-Based Habits
- Decide the type of person you want to be.
- Prove it to yourself with small wins.
The goal is not to achieve results at first, the goal is to become the type of person who can achieve those things.
May 6, 2013
Mathematics of the Discrete Fourier Transform (DFT) with audio applications
> The Discrete Fourier Transform (DFT) can be understood as a numerical approximation to the Fourier transform. However, the DFT has its own exact Fourier theory, which is the main focus of this book.
matlab samples
May 5, 2013
SoX - Sound eXchange
SoX, the Swiss Army knife of sound processing programs.
SoX is a cross-platform (Windows, Linux, MacOS X, etc.) command line utility that can convert various formats of computer audio files in to other formats. It can also apply various effects to these sound files, and, as an added bonus, SoX can play and record audio files on most platforms.
May 5, 2013
Perl Data Language
PDL (“Perl Data Language”) gives standard Perl the ability to compactly store and speedily manipulate the large N-dimensional data arrays which are the bread and butter of scientific computing.
PDL turns Perl into a free, array-oriented, numerical language similar to (but, we believe, better than) such commercial packages as IDL and MatLab.
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