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vt240

284 karma · joined May 2, 2014

Loudspeaker Design, Product Engineering

Email: mark@linearray.com Telegram: @globalinterrupt

http://www.cascadeacoustic.com

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vt240··on The original “Bambi”
The section of the book where he sends Marion off to get money from Arnold, is some of the most haunting writing I've ever come across. The book is truly amazing. I've never come across another novel to so aptly relate the feelings of addiction.
vt240··on Ask HN: What are your favorite examples of elegant software?
The modern Comsol GUI is truly phenomenal, especially considering where it was at with the 3.x versions. It's one of the rare cases, pretty much the only one I can think of in CAD/CAM, where the effort put into a radical GUI redesign really paid off significantly and immediately.
vt240··on Twitter set to accept Musk's $43B offer – sources
Twitter does in fact still reset it all the time, at least on my account. I'll notice it when I run into a bunch of those recommended tweets/follows, which don't appear in the chronological feed. edit but it has been much better recently than it was when the new UI was first released.
vt240··on The Uber Bubble
I have a good friend, ex-Navy submariner, and highly competent industrial technician. He's been driving for Doordash since 2019 now, because he just can't ever make it work with any kind of management in a typical corporate or small-business environment. I'm sure he'd be much more productive as a consultant, in his field of expertise if there were an app for that, but for him, the gig-econonmy, accepting all its down sides, is the preferable way to earn money. I've found it really interesting, that he would accept 2-4x pay reduction, just to be relieved of certain areas of responsibility and accountability.
vt240··on Etsy Strike
The greatest part about eBay for me, is that it actively encourages you to network with a set of vendors, and develop a level of trust. That's just something I've never got from Amazon.
vt240··on Fuchsia Workstation
Please. Help us small business. Extend cycles to have a better coverage of security issues, and less feature changes, in updates.
vt240··on Some people want to run their own servers
I also don't have a static ip at home, but have a hub-star private network that runs over Cisco routers over the Comcast network that allows multiple employees to share in the resources, from the single connection with public facing IPs, with pretty low latency through the private network. It's all done on the cheap, but fast enough I can remote into the office and work on 3d models or photoshop. Certainly fast enough for routing side projects for testing. Obviously this is more complex and costly than the initial home setup of a single node. But even in more rural situations it should be easy to build up networks of like minded people with local ISPs which could share resources like this. Apply for /24, get it setup with an ISP, and then VPN the rest of the traffic in from fellow customers.
vt240··on Some people want to run their own servers
I agree with this. Comcast, is certainly not the cheapest option. We pay right now around $220/mo to have our /29 addresses routed through Comcast. It was about half that over bonded channels of VDSL. But these rates may be a non-starter for a home setup. But it still seems pretty low cost, given what I hear from most of my friends about what they're paying for Cellular plus Home-entertainment on a monthly basis.
vt240··on Some people want to run their own servers
I understand this issue with cellular end-points. I saw a comment on one of the two previous posts here, where a user complained it was impossible to obtain static IP allocations for setting up their own "servers". I found this odd, since in my own history this has never been a problem for a nominal fee, even when I had a 9600Baud modem connecting my network with PPP. I am now wondering, if perhaps I've misinterpreted the concern, that people would like to be able to serve content from their smart phones with fixed IPv4 addressing? What is the actual use case for this?
vt240··on Ask HN: Resources for “Learning” Manufacturing?
I believe they do, although it's not a something I have used personally. They have a pretty comprehensive catalog [1], but like most things with adhesives and resins I would just talk to an application engineer about requirements. Haha, I wish they'd had such a comprehensive catalog when we started working on our parts, because we were left to figure out a lot of it for ourselves.

[1] : https://indd.adobe.com/view/5103906b-5e7b-4b52-9fea-09900d1a...

vt240··on Ask HN: Resources for “Learning” Manufacturing?
We had very good luck using BJB two part polyurethane for low production (<1000 year) large parts. There's quite a bit of process engineering required, but you can get fantastic results, and relatively fast die cycle times, without breaking the bank.
vt240··on Boeing 777 departing Dubai nearly had a major incident after takeoff
Testimony given during the Asiana NTSB Sunshine hearing is probably a good place to start, for anyone who wants more detail on your comment here.
vt240··on Audio Distortion and THD Explained
Haha. Never thought of that one before. Well in this COVID induced nightmare to acquire cable or wire, anything is possible. I don't think it was factor previously. Although I'm not really sure, and would love to be informed, but I didn't think it was the actual normal reputable cable manufactures that were in on this audiophile scam. Please correct me if I'm wrong here. I don't really follow it closely. Previously, I've always been able to acquire wire and cables with the right parameters.
vt240··on Audio Distortion and THD Explained
But the issues that come up in such experiments, are never about audiophile variables. No one has ever said, this Monitor has too much distortion, or that I need to increase the the sampling rate to to 192kHz to fix the tops, or that it would sound better if I had used oxygen free silver wire, etc. etc. What comes up is practical concerns about loudspeakers on stage. Reduce the boominess of the low end, reduce the propensity to feedback on stage, etc. Same goes with working on guitar speakers.
vt240··on Audio Distortion and THD Explained
I wholeheartedly agree with this. I ended up starting my own sound company to help lessen the divide between engineering and the end-user, where I get to go out and try and use our products for a number of real shows every year. But it's not really the same issue, as the non-sense the pervades in the audiophile industry.

In my typical setup, I try and work as a stage hand, and let normal FOH and monitor engineers work with the products, where I can observe all the issues that crop up. That way I can get clean feedback from band members, and production staff without, being tainted by association with the brand.

vt240··on Audio Distortion and THD Explained
And I definitely agree about Stereophile. They tried to clean up their act in the latest years, but. They are just too tied down to those advertisers, to ever put on a hard stance. I don't take the magazine anymore. Highly recommend ALMA's Voice-Coil magazine still, if you want to read about the industry.
vt240··on Audio Distortion and THD Explained
Yeah, it's just goofy. I find it interesting only for the novelty aspect of it I guess. Maybe that was the wrong word to use. Maybe horrifying. My hobby, photography, doesn't seem to be nearly as bad though. It has a lot of the same problems, as the Guitar speaker industry, arguments about the art, and coloration, but it's really missing the $3000 IEC cable aspect, that seems to thrive in the audiophile community.
vt240··on Audio Distortion and THD Explained
This is an aspect of the audiophile community, I've never quite understood. At work, we have clear cut engineering goals, based on customer requirements, we strive to reach, with empirical measurements of product prototypes. Whether it's loudspeakers or cabinets designs, we're optimizing for variables such as coverage pattern, sensitivity, long-term power handling, etc. It's a holistic, system design approach to the "product". We rarely even think about a lot of the metrics the audiophile cares such much about, except in the design of QC systems for End-of-line testing, to catch manufacturing defects. Most of these items, like various avenues of distortion, are designed around in the early phases of development, by simple mechanical or electrical engineering choices, such as motor design, suspension design, cone material choices, etc.

I just always find it interesting. No customer has ever asked me for the plot of distortion products vs freq for a loudspeaker in pro-audio. Or the metallurgic compositions of the tinsel wires.

vt240··on Audio Distortion and THD Explained
I don't really follow the forums as much as I used to, but diyAudio [1] always seemed like it had a good distribution of domain experts to help quash the craziness.

[1] https://www.diyaudio.com/

vt240··on Show HN: You.com, private search engine that summarizes the web – built for devs
Wow, https://search.marginalia.nu is really cool. I just wasted a whole hour looking at sites it was suggesting with the random feature. Haha.
vt240··on Statement from Mark Zuckerberg
I've also never had an issue with Facebook. I've been online through usenet/irc, AIM, livejournal, and then forced to join Facebook because everyone at the university was using it for class correspondence. Later, I have exactly your sentiments, that it has allowed me to stay in touch with people I would have lost touch with over the years. I take advantage of some of the groups for my industry, and my hobbies. I use our company's Page to interact with a whole segment of our international customer base, that would never think to call our support telephone number or e-mail. It's never been a negative experience for me. Although I only look at it when I get home from work at night on my desktop computer. And don't ride around all day with the app running in my pocket. I don't quite know if that would make a huge difference though.
vt240··on So what is the deal with A/UX anyways?
If you are interested in setting it up on Solaris, you can send me a message on Telegram or Email.
vt240··on Leaked Walmart memo reveals competitive threats
I would have to guess, that Walgreens is going out of business, because they are the one store which hasn't ever improved their POS methodology beyond what we used to find in Sears, or Rite-Aid, holy cow, I've not forgotten, what did they used to be called ? Lol. I go to Walgreens to buy cigarettes because I know and live around the checkers who work there, but it is always a complete disaster. Today, was a perfect example. They "found" a device on the pin pad, and it took 10 minutes to find people in the store to man another register, then look at it, make sure it wasn't compromised, and there were 15 people in line. But par for the course in there. There will be 10 people lined up at the front, and they'll still man cosmetic and photo stations with no customers, and never really reposition employees. I don't get mad anymore. I go in and know what I'm in for. IC3 .... IC3 ..... IC3 ....
vt240··on America has a drinking problem
I feel hung over whether I drink one beer or six, it doesn't really change. I don't even feel any 'buzz' if I drink one beer, mixed drink or glass of wine, but will just feel bad for the next 12-hours.
vt240··on [dead]
Seems to be dead from Comcast Business in Seattle.
vt240··on MkLinux
Yeah I ended up using YellowDog on my G3 Wallstreet all through college. It worked great for Linux on a Laptop for those days.
vt240··on MkLinux
Wow, that one was rare. I don't think I ever saw but one Radius clone when I was doing on-site service.
vt240··on MkLinux
Unfortunately, it went to the thrift shop many years ago, along with all the vintage UNIX workstations I wish I still had today. Haha. Hopefully, someone picked them up and they didn't just get recycled.
vt240··on MkLinux
I think this was also the first "Linux" I ever installed. On one of those Tanzania clone, Motorola StarMax 3000s. I seem to recall, that it never booted through OF, at that point. I can't remember which version that was, probably the early DR3.
vt240··on Has Doordash went down during the pandemic?
Has Doordash actually went down during the pandemic? What has failed here in the infrastructure to allow this to happen, at least in parts of WA state?
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