loxias

54 ms·

541.
by loxias 5y ago
Do you know anything about these "acoustic vector sensors"? When I first saw a popular science article about them, I got excited about incorporating them into an array, but couldn't find any technical details, just a lot of w
542.
by loxias 5y ago
IME, the array only needs phased matched mics if you're doing SDB, or something else that cares deeply about audio fidelity. I've never used phased matched mics in my arrays (can't afford it!) and also have never needed to
543.
by loxias 5y ago
> Are there any inexpensive microphone arrays? Not that I can find! Building the array is way more expensive than it needs to be. I have limited EE knowledge, so have been stumbling through it on my own, building my first array out of
544.
by loxias 5y ago
Yes you can. Another problem though is that the microphones need to have a common timebase, unless you have More Magic.
545.
by loxias 5y ago
How many times cheaper would a competing product need to be for you to consider buying one? Obviously, Fluke, and the positive reputation that brand is known for, and reliable product support are worth a LOT, but I'm sure there's
546.
by loxias 5y ago
Oh absolutely! Sorry, I was excited in my typing. It's not every day you see "your baby" on HN :) Everything I built was on the shoulders of giants, and lol, I didn't invent beamforming itself (of course). The problem
547.
by loxias 5y ago
Yes. One surprising result is that weak sounds, even some below the threshold of hearing, are easy to detect, provided you have clear line of sight and no turbulence.
548.
by loxias 5y ago
Hm. Doable. I think the hard part for that then might be getting the real time information about the position and orientation of the viewfinder in high enough resolution. Keep in mind "the black box" can output the position in 3
549.
by loxias 5y ago
> $500k Are you kidding me???! It costs so... so... so... much less. I thought automotive might be a good application, considering all the doors opened by using more DSP tricks layered in addition to source localization. (I can locali
550.
by loxias 5y ago
Not speaking to OP's device, but yes, I was able to track a loud fly buzzing through a room in real-time. ~cm accuracy, but that can be improved on.
551.
by loxias 5y ago
Would work! One of the first applications I made was a processing layer returning, in spherical coordinates centered at an arbitrary reference point, what the system determined as the "primary sound source". In demo, the two ang
552.
by loxias 5y ago
I'm not the original author, however, ages ago I invented what's now being called "acoustic camera". (Specifically, the SOTA on the math side for precision, accuracy.) The resolution is fine enough that with COTS parts,
553.
by loxias 5y ago
It could! But those are not exactly "easy things to do" ;) I'm sure it could happen, for a sufficiently large grant.
554.
by loxias 5y ago
You mean in-process databases :)
555.
by loxias 5y ago
I don't know what a DataFusion is, or what Arrow is, but DuckDB is, in my understanding (and use of it), an "almost" drop in replacement for SQLite, except with better performance. Anytime you might want to use SQlite as an a
556.
by loxias 5y ago
It must be nice, agreed! Sadly I wouldn't know. In the past 20 years, I've been nearly homeless, working 2 minimum wage retail jobs 60/h week and cursing the lack of time or energy to improve my situation, and, at another ex
557.
by loxias 5y ago
Decriminalization is implied. Necessary but not sufficient. That most certainly should (have) happen(ed by now). By regulation, I'm thinking the worker safety axis, not nec. the consumer protection one; agreed, if existent, it shoul
558.
by loxias 5y ago
Compliments on a well communicated, insightful, and data driven look into a opaque industry that I've been curious about for a while! I'm curious what you think about the relative price comparison to hostess work in LA outlined ab
559.
by loxias 5y ago
Can't wait for the Pixel 6a! Also, hoping this means 5a prices will drop, I'm ready for an upgrade.
560.
by loxias 5y ago
This is a fantastic article, echoing what others have said "informative, well-written, thoughtful, human, and funny ". After being shocked at how low the price is, considering how the market prices a related job (see my other com
561.
by loxias 5y ago
> 1,200 an hour! I've always been mildly curious, my first thoughts were "Less than I thought!". Hear me out (criticism of my thinking on this is very welcome): In LA's Ktown, a Domi (a job I had no idea existed jus
562.
by loxias 5y ago
> It would be nice if we could just regulate this industry to protect the people in it. Amen to that. As an ignorant outsider looking in, the first thing that comes to mind is the possible huge safety benefits gained by collective barga
563.
by loxias 5y ago
"please be MOND, please be MOND, please be MOND... " page loads "YES!" I've always had a soft spot for MOND. A friend of mine (now tenured at STScI!), once pointed out to me that it was really fringe, and, fo
564.
by loxias 5y ago
Another vote for Chinese! (can't wait to show this to a friend who's working on their English)
565.
by loxias 5y ago
404?
566.
by loxias 5y ago
Hah. That it does! I like the parallel with "Die Hard is the best Christmas movie".
567.
by loxias 5y ago
I envy how little spam you must receive!
568.
by loxias 5y ago
> I'm 28 ... adjunct professor ... We talk about this still. I'm a decade older, and am relieved to see this. > Hackers - the best hacking movie ever made :) Counterpoint: _Sneakers_: the thinking person's hacking movi
569.
by loxias 5y ago
If yoU were a teenager at the right time, the L0pht, et al. were crUcial in nUdging the next decades of yoUr life. I'm sUre I'm not alone in having fond memories seeing this. :) PS: (2 decades since Boston madness!)
570.
by loxias 5y ago
> SIGBOVIK This year's submission "uppestcase and lowest case" letters spawned giggle-fits in myself of such magnitude I had not felt since "Too Many Cooks". Not the first bit, but where it develops eventually.

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