cnvogel

28 ms·

211.
by cnvogel 11y ago
This practice is absolutely standard in oscilloscopes (which is what I'm right now shopping for). Additional options will set you back between a few hundred or maybe a thousand dollars/euros easily. In the past "options"
212.
by cnvogel 11y ago
No need to digitize. There are analog multiplier and squaring circuits. http://www.analog.com/en/products/linear-products/rms-to-dc-...
213.
by cnvogel 11y ago
As I had remarked, a good RMS meter on a known impedance, on a frequency it's spec'ed for. The setup shown is neither. Also: For low-level AC measurements you invariably need active rectification. So your meter will never be direc
214.
by cnvogel 11y ago
More specifically, THIS voltmeter, which is a little bit "under-spec'ed", to say the least: Radio Shack (22-223) https://www.google.de/search?q=radio-shack+22-223&tbm=isch It's set to the 10V-AC rang
215.
by cnvogel 11y ago
""" in a studio, 0dB full-scale meter redline is calibrated to a standard voltage reference, and both consumer and professional audio has equivalent standard levels for the loudest level possible""" This is onl
216.
by cnvogel 11y ago
No, compressors have also been used in analog studios for a long time... See, for example, this device... http://www.audioblendmastering.com/fairchild-670/ Often digital plugins try to recreate the characteristics of s
217.
by cnvogel 11y ago
> compression makes all parts of the music almost equally loud What you are referring to is only one particular use-case for which a "compressor" is used during music production: Most often people apply dedicated plugins to the
218.
by cnvogel 11y ago
...which requires active malice on part of Microsoft. Whereas automatic upload of core-dumps even under normal non-attack operating conditions might even be forbidden by law when, for example, working with sensitive personal or otherwise cl
219.
by cnvogel 11y ago
Maybe people fear that personal data might show up in the collected minidumps? Doesn't sound unreasonable.
220.
by cnvogel 11y ago
You are right, the carry bits will clobber the neighboring bytes, I think.
221.
by cnvogel 11y ago
First and foremost: YES, I KNOW! This is completely senseless microbenchmarking and micro-optimization. I ONLY LOOK AT THIS FOR FUN. That being said. The 64bit multiplication is faster, and also constant in time. I've measured this usi
222.
by cnvogel 11y ago
> The chip just says "yes"?! Yes. From https://www.cl.cam.ac.uk/research/security/banking/nopin/oak... page 446 (last page), T: Terminal, M: "Man in the Middle": T
223.
by cnvogel 11y ago
http://www.coboloncogs.org/INDEX.HTM
224.
by cnvogel 11y ago
I think this article is written on purpose to make a small improvement on googles approach from 5 years ago look more impressive than it is. Here's an image of a "google server" from 2009: http://www.altenergystock
225.
by cnvogel 11y ago
> Welcome to the world of embedded RTOSs, where > everything is running within a single application. > There's certainly no memory protection. Generally, I agree, even though there have been quite a few chips
226.
by cnvogel 11y ago
Thanks for adding this!
227.
by cnvogel 11y ago
The investigations regarding Toyotas(?) unexplained/unintended acceleration suggest otherwise. The code was apparently pretty bad, halfheartedly reviewed and just unmaintainable. While there the software seemed to have (a huge number o
228.
by cnvogel 11y ago
But from a social/human perspective: some semi-data-conscious people have been known to upload pictures with only the human readable print redacted, but with the barcode left intact. Also oome people might tear the boarding pass into m
229.
by cnvogel 11y ago
I find it quite shocking how openly this article boasts about violation of everyones' privacy regarding "network analysis" (in the section about intelligence gathering, "The latest kit"). Quotes: "thanks to adv
230.
by cnvogel 11y ago
With Bluetooth, it's precisely what all notebooks I can remember do. With WiFi, especially connected via PCIe, I wouldn't rule out problems. But please keep in mind that at least in the early days WiFi cards most often came as PCM
231.
by cnvogel 11y ago
No, that's probably just by convention. If it's strictly an input then both directions are just the same in terms of safety. It's just sometimes more convenient to only pull things down or up and have a resistor provide the o
232.
by cnvogel 11y ago
Ok, maybe I've been doing too much hardware development and more tinkering than the average guy, but this part here, to me, sounds way overblown: > As you can see, it is not a trivial matter to > manufacture these HKSes
233.
by cnvogel 11y ago
> and you're going to be personally responsible for its security Well... but Android is a year long (8 years since the first beta) effort backed by Google (55k employees) and companies like Samsung (490k employees). They might spare
234.
by cnvogel 11y ago
Compared to "no encryption", a S4 mini (Dual-core 1.7 GHz. 1.5 GB RAM) is almost unusable (~30 seconds to switch to an app that's stale, i.e. not one of the last few apps used) under Cyanogenmod 12.1 with full disk encryption
235.
by cnvogel 11y ago
Even better, explicitly request a fast reboot: "echo b >/proc/sysrq-trigger".
236.
by cnvogel 11y ago
That's one of the things that I find inexcusably and also rather sad: Given the amount of customization that Android systems require to run on a particular vendors hardware, they don't seem to make use of the multitude of security
237.
by cnvogel 11y ago
There is, and it's been fixed in Linux for a few years, possibly the severity of the issue wasn't even realized back then. In linux-mainline/arch/x86/entry/entry_64.S, at syscall_return you'll find a comme
238.
by cnvogel 11y ago
So, I worked at an internet provider up to several years ago, and we were using quite a lot of Cisco routers. Maybe something has radically changed, but I'd be surprised. Please someone correct me if that's now totally different.
239.
by cnvogel 11y ago
Probably it's just the general stability of the oscillator circuit. It seems to drift around 300 kHz around its center frequency of 340 MHz, so about +/-1‰. For such a very simple transmitter that's likely demodulated with an
240.
by cnvogel 11y ago
But of course nowadays most distributions use KMS and put the consoles in a graphics mode on which the virtual console is emulated.

More ›