Lichtso

26 ms·

241.
by Lichtso 6y ago
I have seen the real holographic photographs [1] being used in museums. Actually, they are getting cheaper and there are some hologram kits you can buy to make your own at home. Obviously not animated, but in principle it should be possible
242.
by Lichtso 6y ago
> Which we cannot measure with complete accuracy I very much dislike this phrasing, because it suggests that it is just us that are not capable of building an apparatus to enable us to do so. Imagine a gear transmission or a lever: You c
243.
by Lichtso 7y ago
I think this is a fairly good summary of the most important testing styles and where / when to (not) use them. One more category of tests I would add are meta tests (like mutation tests). These are tests which test the tests, seeing if
244.
by Lichtso 7y ago
> you don't want to deploy an environment that your users can extend What is so bad about that? And isn't it common practice around computer games for example, which can be modded and extended by custom user content?
245.
by Lichtso 7y ago
Distributed version control for a graph database. Not just serializing the graph and putting that in a DVCS, but an actual graph based DVCS which manages graphs (reflectively). https://github.com/Symatem/SymatemJS
246.
by Lichtso 7y ago
Really cool idea, I wonder why nobody tried this earlier. However, the main problem I have with this approach is the voxels. They model the geometry and only the geometry. The far more important aspect of topology is left out. Thus, the res
247.
by Lichtso 7y ago
O(n log n) for the x axis (time samples) and O(n) for the y axis (frequencies). But you can downsample the signal in frequency domain, meaning you will pay mostly for the output resolution.
248.
by Lichtso 7y ago
The signal will continue over the seam between two windows, meaning you will cut the wave in the signal "in half". Mathematically, waves are always infinite and to cut them you would actually introduce overtones (higher frequencie
249.
by Lichtso 7y ago
I made a WASM + WebGL port some time ago, similar to this one here. I can polish and upload it to GitHub in the next days.
250.
by Lichtso 7y ago
Yes, but then you are back at time-windows, a window-function, overlap and artifacts, which is defeating the purpose.
251.
by Lichtso 7y ago
Also try using the Wavelet-Transform instead of short time FFT (with overlapping windows). It is easier to configure (less parameters, there is no need for a window function), offers more flexibility (exponential frequency band; e.g. for mu
252.
Show HN: An Emulator of the IBM PC Running DOS Written in Rust(github.com)
6 points by Lichtso 7y ago|0 comments
253.
by Lichtso 7y ago
Looks similar to my effort to interface RISC-V emulators and bare metal C: https://github.com/Lichtso/riscv-llvm-templates
254.
Ask HN: If one person was to redesign all fundamental software in a lifetime
3 points by Lichtso 7y ago|1 comments
255.
by Lichtso 7y ago
Screenshots and demo videos would help a lot
256.
by Lichtso 8y ago
> Down with the syntax! Yes, exactly! But replacing one syntax by another is not "down" with the syntax. Even the natural language inspired version is still a text. A sequence of characters bound by a syntax and comes with the
257.
by Lichtso 8y ago
Here is my collection of thoughts and opinions on the topic. First: The fascination for simulation hypothesis is another extension of us humans wanting to be something special and also being very worried that we might not be so special afte
258.
by Lichtso 8y ago
"Projectional Editing" is coming to my mind, in case you are looking for more input on the topic.
259.
Symatem – Reinventing Software (LLVM Social Berlin #11) [video](youtube.com)
2 points by Lichtso 9y ago|0 comments
260.
by Lichtso 9y ago
Yes, that is exactly what it means. Every symbol (vertex of the graph or element of a triple) has its own bitstream, which is used to implement all the literals.
261.
by Lichtso 9y ago
That's an excellent idea. I will add a static SVG as fallback right away.
262.
Show HN: Symatem – An Ontology Engine, Visualizer, and Editor Using WebAssembly(symatem.github.io)
16 points by Lichtso 9y ago|6 comments
263.
by Lichtso 10y ago
Yes the error handling is far from perfect. I'll have to properly test and improve it.
264.
by Lichtso 10y ago
Yes, and there are many other libs doing similar things too. But all I have seen so far could not satisfy my needs. As for the scipy.signal.cwt method, it doesn't support complex output: https://github.com/scipy/sc
265.
Show HN: Signal Analysis Library Using Continuous Wavelet Transform(github.com)
36 points by Lichtso 10y ago|4 comments
266.
by Lichtso 10y ago
Except from HDMI almost everything is open or reverse engineered. To me it was sill more attractive than the Ordroid-U3 with its Samsung chip, which boots only signed software and is totally undocumented. Same with the PI3 and its GPU code,
267.
by Lichtso 10y ago
On one hand it is very light weight: less than 4k LOC and 16 kB executable (which fits completely in the first stage of SRAM), so it is easier to grasp compared to U-Boot: https://github.com/trini/u-boot/search?q=s
268.
by Lichtso 10y ago
For those who are interested in running your software on AArch64 hardware directly, without any additional firmware or operating system in between, I've developed a boot loader and tool chain to test and execute unikernels on a Pine64: