BUILD AN ENTROPY SYNTHESIZER
This is not one entropy synthesizer but several
in various stages
of being built. An entropy synthesizer is
a noise generator that
sounds musical, and has controls for making
music without
radio or recording media. For the past 10
years none have
been run on computers because of the bizarre
way the sound
is made, no GUI programmer has been even
able to translate
the original entropy synthesizer software,
which contained only
26 bytes of machine language embedded in
a short BASIC
program, written by an 11 year old child
who thought that
synthesizers were radios with brains that
made up music.
Without the simple 8-bit computers, the entropy
synthesizer
is now only run on chips. Sound that was
transferred to the
sound gallery was done using a somewhat tedious
process of
transfer from an 8-bit machine to a PC, not
in real time as the
standalone devices do. One 8 bit machine
can output to
audio and video at the same time, the same
data, in real time.
This is an older sound-only Entropy Synthesizer.
These are also called "Mars radios".
The algorithm in this is LIKE an LFSR or
a CA.
The buttons perturb the algorithm in various
ways.
Entropy synthesizers can easily do CA's,
but the
256 rule set has never as of 8-14-2005 been
run
on an entropy synthesizer. Only a few years
ago
was it realized that these always generated
Triangle
fractals.
It is recent for entropy synthesizers to
generate
stereo sound. The strangeness of their sounds
is
extremely intense as binaural beats. The
entropy
synthesizer has been used in the past as
a test pattern
for "Neurophone" activity. In 2000,
we transmitted
sensations to the nervous system but was
not able
to control (modulate) the powerful coils
with the N-synth.
The typical bandwidth of an entropy synthesizer
is 3 MHz, but when burned to a CD only 44100
samples are taken.
Like an LFSR, the original N-synth had a
circular
universe. And on average, 2^2^6144x8 possible
loops.
Since 2000, hundreds of new tweakable noises
have been discovered that run on the entropy
synthesizer.
As many as possible, I will attempt to make
into mp3 files.
No entropy synthesizer ever used more than
64K,
with 8K being typical. The smallest one ever
made
had no processor and no RAM, and still generated
the typical sound of the original one. And
that one
is connected to a solar cell and a long wire,
and
just runs "WILD" in a tree in a
forest at 1842000 Hz.
ERP is a few microwatts, you have to know
where
the thing is to hear it on the radio. Many
N-synths
have antennas so you can use a radio to hear
their
ultrasonic noises.
This is a fantasy, because N-synths are called
Mars radios,
and the music they make, people say it sounds
like it's
from Mars. The N-synth antennas do nothing
but fake a radio.
A keyboard has never been used with an N-synth
yet.
The keyboard will be used to musically control
(play) one.
And also to exploit the new memoryless feature.
The Berlekamp-Massey algorithm can generate
a seed
for an entropy synthesizer that will cause
it to play a
song. But many new and better ways are known
for
finding good music in N-synths now.
The memoryless entropy synthesizer consists
of one
binary counter split in half and the bits
logically AND
in pairs, and then OR together. That also
makes a
triangle fractal. That will probably be explained
more
in the form of a schematic soon. Some variety
is possible
even with that minimal circuit, which has
switches to
control the logical gates.
All entropy synthesizers use pulse width
modulation
to generate analog sound.
More information is forthcoming.
In the meantime, why not take a look at some
other
similarly weird noisemakers at:
http://www.musicfromouterspace.com
or how to make a 3D projection TV or VR system:
http://www.dreamatron.com
[RESERVED FOR LINK TO:BUILD AN NSYNTH PART
2]
N-Synth History Page
(cc)VIRES Organization, 2005
Some rights reserved.
Updated 8-14-2005