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On 03/03/13 14:25, Jens Christian Hillerup wrote:
I basically just wanted to throw it out here. Does anybody have
experience in modulating data? Has this kind of digital one-way
communication been done in an activist setting before? Does it
make
On Mon, Mar 4, 2013 at 4:40 PM, Michael Rogers mich...@briarproject.org wrote:
Last year I spent some time playing with audio encoding of data for
transmission over handheld radios. The state of the art here is dialup
modems - on a good day they can get 56,000 bits per second over a
channel
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On 04/03/13 15:56, Jens Christian Hillerup wrote:
Nice information, thanks. Would it be wrong to assume larger data
rates to be attainable on an FM link than over the telephone
line? For music etc. FM has far superior sound quality in any
case.
To increase bitrate, have you considered using fundamental frequencies with
distinct overtone series (partials) instead of pure fundamental
frequencies?
On Mon, Mar 4, 2013 at 11:17 AM, Michael Rogers mich...@briarproject.orgwrote:
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On 04/03/13
Whoops, we're drifting off-list. I've included the relevant parts (and
committed a stereo fix to the main repo that fixes the bug from my
second mail).
On Mon, Mar 4, 2013 at 6:46 PM, Kurtiss Hare kurt...@gmail.com wrote:
Also, couldn't having a large frequency span be challenging to carry
over
begin Jens Christian Hillerup quotation of Mon, Mar 04, 2013 at 06:53:05PM
+0100:
Whoops, we're drifting off-list. I've included the relevant parts (and
committed a stereo fix to the main repo that fixes the bug from my
second mail).
DTMF uses two pitches at a time -
On Mon, Mar 4, 2013 at 7:26 PM, Don Marti dma...@zgp.org wrote:
begin Jens Christian Hillerup quotation of Mon, Mar 04, 2013 at 06:53:05PM
+0100:
Whoops, we're drifting off-list. I've included the relevant parts (and
committed a stereo fix to the main repo that fixes the bug from my
second
On Mon, Mar 4, 2013 at 11:45 AM, Jens Christian Hillerup
j...@hillerup.net wrote:
Yes, and then I can scrap the stereo encoding again. I'd rather have
it optional than required. And I agree, it would make more sense to
pick eight notes and use them as a bitmap. We'd face the same problems
as
I'm not sure if people on this thread got my point
The the design criteria for the proposed data modulation approch that might
be considered optimal here would be the one that would get those who might
be doing surveillance to fall in love with you!
-Peter
--
Too many emails?
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On 03/03/2013 09:25 AM, Jens Christian Hillerup wrote:
I basically just wanted to throw it out here. Does anybody have
experience in modulating data? Has this kind of digital one-way
communication been done in an activist setting before? Does it
Hi,
One thing I've been thinking a lot about recently is how to make
digital one-way communication feasible for activists, sort of sending
digital information to the broad public. I believe that FM is a good
medium for this because the transmitters are cheap and everybody has a
radio. Hook up the
I love this PoC, and I believe it might actually prove useful in certain
situations.
Short-range FM transmission is certainly possible with cheap devices [1]
Modulating the FM signal should be a breeze, I'll try to hack up some code soon.
Awesome project.
[1] -
On Sun, Mar 3, 2013 at 3:25 PM, Jens Christian Hillerup
j...@hillerup.net wrote:
I did a quick hack back in September, called modulera [1]. The idea is
to exploit how pentatonic polyphony always sounds good, regardless of
the notes picked (as long as they're within the scale). The way it
works
Dear
Jens / LibTech-ers
I like the musical spirit of Jens proposed modulation scheme! I gather
it's possible to utilize musical harmonic as well as rhythmic theory and
the underlying relationship of Music to information theory to form the
foundation for a set of ear pleasing
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