[CQ] Pacificon 2011
Bruce Perens
bruce at perens.com
Wed Jul 20 00:15:40 UTC 2011
Pacificon is soliciting for speakers for their October conference. See
http://pacificon.org/
The papers chair is John Ronan jtronan at aol.com
I didn't submit a talk on our 900 MHz network, as I don't have any
results yet. As I write this, I am rebuilding OpenWRT from source for my
routers.
I will be doing three talks:
*Codec2 - The next-generation Digital Voice Codec for Amateur Radio*
The one problem with D-STAR is its AMBE+ voice codec - it's algorithm is
a black-box, protected by patents and trade-secret law. Amateurs aren't
/allowed/ to duplicate it in software.
A Group of hams set out to fix that by creating a new digital voice
codec as Open Source software that Amateurs could copy and modify as
they wish. That codec works today. On the way, the Amateurs explored
voice compression algorithms, forward error correction, and digital
signal processing.
*HT of the Future - Building Leading-Edge HTs with Smartphone-like
Processing Power*
Why are Smartphones so smart, and HTs so dumb? New microprocessors
provide high processing power and low battery drain at excellent prices,
opening a broad horizon for mobile software-defined radio. Smartphones
have shown the power of mobile applications. What will we be able to do
when we combine those things into the HT of the future?//
*The Open Hardware Revolution - new design tools, manufacturing within
the reach of individuals.
*
Open Hardware is similar to Open Source software, in that all plans are
made available under a liberal license for anyone to duplicate. It is a
rapidly expanding field, with many devices available. Arduino is perhaps
the most popular Open Hardware device. It is a simple, inexpensive yet
powerful embedded CPU with a standardized means to plug in extender
boards of all kinds. It comes with an Open Source development platform
supporting several languages. But perhaps most interesting is the new
generation of tools designed by individuals and then manufactured for
the masses, like the /Bus Pirate,/ a dirt-cheap universal digital
prototyping device, and the /DSO Quad,/ a pocket-sized digital
oscilloscope that can be custom-programmed by the Amateur. There's even
a new wave of "3-D printers" for individuals, that can produce solid
objects from software models.
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