<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Hacker News: SigmundA</title><link>https://news.ycombinator.com/user?id=SigmundA</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Mon, 15 Jun 2026 16:43:30 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=SigmundA" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by SigmundA in "Raress96/Dolby-Atmos-encoder: PoC Dolby Atmos encoder"]]></title><description><![CDATA[
<p>Why EAC3 compressed audio instead of uncompressed PCM in Dolby MAT like an Apple TV?<p>E-ARC has the bandwidth for 32 channel/object uncompressed Atmos no need to do EAC3 compression. This is why Apple TV and Windows use Dolby MAT uncompressed, not lossy and more direct.<p>You can decode TrueHD to PCM + metadata then just send out in Dolby MAT although would be limited to 44/16bit but then so is EAC3 I believe. True HD can go higher sampling and bit rates over E-ARC since it's compressed and why it's used.<p>Only reason to use EAC3 is to fit over lower bandwidth ARC instead of EARC, my LG tv will convert/compress Dolby MAT uncompressed from Apple TV to EAC3 DD+ if EARC is disabled and it falls back to ARC due to bandwidth constraints.</p>
]]></description><pubDate>Sun, 14 Jun 2026 13:49:50 +0000</pubDate><link>https://news.ycombinator.com/item?id=48527193</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48527193</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48527193</guid></item><item><title><![CDATA[New comment by SigmundA in "BYD to install 5-minute EV chargers across Europe"]]></title><description><![CDATA[
<p>These are typically LFP batteries that already have significantly longer cycle life and are a much more stable chemistry than the NCA / NCM cells in normally found in western cars.<p>The cells are also designed toward charge speed vs capacity (more copper less lithium) and cooling systems capable of keeping batteries at good temps even with 10C charging, so overall they are shooting for million mile batteries, I don't think people realize how robust LFP's are and that China is all in on that chemistry and the progress being made there.</p>
]]></description><pubDate>Thu, 11 Jun 2026 17:30:37 +0000</pubDate><link>https://news.ycombinator.com/item?id=48493477</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48493477</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48493477</guid></item><item><title><![CDATA[New comment by SigmundA in "BYD to install 5-minute EV chargers across Europe"]]></title><description><![CDATA[
<p>Yes charging at home is great until you need to go on a long road trip or you live somewhere without the ability to charge overnight.<p>I can charge overnight but I am not going to give up a gas car until the fast charging situation is better. I do have an EV around town and its great, but the road tripper is gas, looking at PHEV as a middle ground for next car.</p>
]]></description><pubDate>Thu, 11 Jun 2026 17:24:56 +0000</pubDate><link>https://news.ycombinator.com/item?id=48493394</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48493394</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48493394</guid></item><item><title><![CDATA[New comment by SigmundA in "BYD to install 5-minute EV chargers across Europe"]]></title><description><![CDATA[
<p>I can fill my gas car in 5 minutes, this makes an EV essentially no different. I don't want to sit around 15 minutes to fill up my car on a road trip that also increases stall throughput 3X.<p>I think Chinese are taking the correct approach focusing on charge speed rather than range, although their range is going up too using LFP batteries that are very safe and have long cycle life.<p>Good video here looking at the future for EV that is already a reality over there: <a href="https://youtu.be/ajim7KF30jE" rel="nofollow">https://youtu.be/ajim7KF30jE</a></p>
]]></description><pubDate>Wed, 10 Jun 2026 22:39:48 +0000</pubDate><link>https://news.ycombinator.com/item?id=48483751</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48483751</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48483751</guid></item><item><title><![CDATA[New comment by SigmundA in "Iran Shock Jolts Asia and Europe to Speed Up Energy Transition"]]></title><description><![CDATA[
<p>What if he's is just an evil Chauncey Gardiner?</p>
]]></description><pubDate>Thu, 04 Jun 2026 22:40:37 +0000</pubDate><link>https://news.ycombinator.com/item?id=48405640</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48405640</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48405640</guid></item><item><title><![CDATA[New comment by SigmundA in "Scorched Earth 2000 – Web"]]></title><description><![CDATA[
<p>I remember the original Scorched Earth being one of the few games that could actually do SVGA graphics at the time.<p>Most games of the era where 320x240 8 bit 256 colors, I had a 286 with 800x600 SVGA monitor and that game could actually use it although it was only 4 bit 16 color, don't think I ever played the 256 color in the last version.</p>
]]></description><pubDate>Thu, 14 May 2026 03:11:18 +0000</pubDate><link>https://news.ycombinator.com/item?id=48130654</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48130654</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48130654</guid></item><item><title><![CDATA[New comment by SigmundA in "Testing UPS Output Waveforms"]]></title><description><![CDATA[
<p>>The CMRR of the Micsig I linked is pretty average, but it's a lot better than the TiePie at low frequencies. Micsig also specifies it at multiple points across the spectrum, while TiePie doesn't even say where they measured it.<p>It worse at high frequencies and the same in the middle. Again this is a whole scope compared to a probe.<p>Not sure why you think Tiepies are toys, they are use professionally in Europe, popular for automotive. They have a lot more expensive scopes, and the price difference for the differential versions are not that much.</p>
]]></description><pubDate>Wed, 13 May 2026 19:05:07 +0000</pubDate><link>https://news.ycombinator.com/item?id=48126039</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48126039</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48126039</guid></item><item><title><![CDATA[New comment by SigmundA in "Testing UPS Output Waveforms"]]></title><description><![CDATA[
<p>>Now, let's say you want to probe two things at the same time (triggered by a common signal source). You can't. And the reason you can't is because the producer took the expedient of floating the entire scope, and there's no trigger input.<p>Yes this is very inexpensive single input scope, they make more expensive multi input scopes you can stack as many as you want and have them synced:<p><a href="https://www.tiepie.com/en/usb-oscilloscope/handyscope-hs6-diff" rel="nofollow">https://www.tiepie.com/en/usb-oscilloscope/handyscope-hs6-di...</a><p>The difference in price between their single ended and differential scope is not the much so it seems the actual differential part is not the expensive part, back to my original point.<p>>Related to that, this thing doesn't appear to have a step attenuator, which is why the effective resolution depends on the volts/div setting of the input.<p>They sell differential step attenuators: <a href="https://www.tiepie.com/en/usb-oscilloscope/accessories/differential-attenuator-tp-da10" rel="nofollow">https://www.tiepie.com/en/usb-oscilloscope/accessories/diffe...</a><p>>Also, they don't specify the CMRR, which is one the main figures of merit people look for on differential probes.<p>CMMR 60db from thier spec sheet: <a href="https://download.tiepie.com/Documents/Datasheets/Datasheet-HP3.pdf" rel="nofollow">https://download.tiepie.com/Documents/Datasheets/Datasheet-H...</a><p>>This is not to say the product you linked shouldn't or can't be used for anything, but it is a niche product. That's probably why it is advertised as a "power quality monitor" and not an "oscilloscope".<p>From their spec page: "The tables below show detailed specifications of the Handyscope TP450 high voltage oscilloscope."<p>and<p>"The Handyscope TP450 is delivered with the versatile Multi Channel oscilloscope software, which transforms the Handyscope TP450 into an oscilloscope, spectrum analyzer, data logger, multimeter and protocol analyzer."<p>They make quite a few differential scopes, that just happens to be a inexpensive one physically deigned for power quality analysis.</p>
]]></description><pubDate>Wed, 13 May 2026 18:56:00 +0000</pubDate><link>https://news.ycombinator.com/item?id=48125938</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48125938</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48125938</guid></item><item><title><![CDATA[New comment by SigmundA in "Testing UPS Output Waveforms"]]></title><description><![CDATA[
<p>I understand what a differential probe does, what I don't understand is why they are so expensive. Again one can get a whole USB differential scope for the same price or less. Seems like just a differential probe should be relatively inexpensive well under a $100.<p>The Tiepie software actually works very well even though it's Windows only, they do have Linux library, just no GUI on Linux. Its not single purpose its a full oscilloscope that happens to use differential inputs.<p>They actually do sell one more purpose built for power quality analysis which is new. I would love to have a couple on my home power split phases to view and log power quality in detail: <a href="https://www.tiepie.com/en/usb-oscilloscope/handyscope-tp450" rel="nofollow">https://www.tiepie.com/en/usb-oscilloscope/handyscope-tp450</a></p>
]]></description><pubDate>Wed, 13 May 2026 00:29:35 +0000</pubDate><link>https://news.ycombinator.com/item?id=48116387</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48116387</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48116387</guid></item><item><title><![CDATA[New comment by SigmundA in "Testing UPS Output Waveforms"]]></title><description><![CDATA[
<p>Why are differential probes so expensive and why don't more scopes just have differential port built in?<p>For about $300 you can buy a Tiepie differential usb scope: <a href="https://www.tiepie.com/en/usb-oscilloscope/handyprobe-hp3" rel="nofollow">https://www.tiepie.com/en/usb-oscilloscope/handyprobe-hp3</a></p>
]]></description><pubDate>Tue, 12 May 2026 20:03:51 +0000</pubDate><link>https://news.ycombinator.com/item?id=48113700</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48113700</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48113700</guid></item><item><title><![CDATA[New comment by SigmundA in "GameStop makes $55.5B takeover offer for eBay"]]></title><description><![CDATA[
<p>I mean its on the website...</p>
]]></description><pubDate>Mon, 04 May 2026 21:47:54 +0000</pubDate><link>https://news.ycombinator.com/item?id=48015465</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48015465</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48015465</guid></item><item><title><![CDATA[New comment by SigmundA in "Removable batteries in smartphones will be mandatory in the EU starting in 2027"]]></title><description><![CDATA[
<p>Wood boats have been around for hundreds of years as well doesn't mean they are just as good in leak resistance to welded boats...<p>Ship vs boat is also not a contradiction.</p>
]]></description><pubDate>Mon, 04 May 2026 17:15:53 +0000</pubDate><link>https://news.ycombinator.com/item?id=48011678</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48011678</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48011678</guid></item><item><title><![CDATA[New comment by SigmundA in "Removable batteries in smartphones will be mandatory in the EU starting in 2027"]]></title><description><![CDATA[
<p>Now go look up why they stopped riveting ships in the 40's and went to welding, there are no modern riveted ships. Even with the rivets they were forged not pressed, nothing like a screw.<p>Cheap aluminum boats are still riveted, welding preferred for obvious reasons. I have an old riveted aluminum John boat and is leaks through the rivets and seams...</p>
]]></description><pubDate>Mon, 04 May 2026 16:58:15 +0000</pubDate><link>https://news.ycombinator.com/item?id=48011421</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=48011421</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48011421</guid></item><item><title><![CDATA[New comment by SigmundA in "A web-based RDP client built with Go WebAssembly and grdp"]]></title><description><![CDATA[
<p>Logically air gapped :)<p><a href="https://docs.aws.amazon.com/aws-backup/latest/devguide/logicallyairgappedvault.html" rel="nofollow">https://docs.aws.amazon.com/aws-backup/latest/devguide/logic...</a></p>
]]></description><pubDate>Sat, 25 Apr 2026 15:09:51 +0000</pubDate><link>https://news.ycombinator.com/item?id=47902072</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=47902072</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47902072</guid></item><item><title><![CDATA[New comment by SigmundA in "What game engines know about data that databases forgot"]]></title><description><![CDATA[
<p>Because there is a whole section that describes column based storage without mentioning that some databases have column based storage as an option.</p>
]]></description><pubDate>Thu, 09 Apr 2026 19:11:42 +0000</pubDate><link>https://news.ycombinator.com/item?id=47708309</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=47708309</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47708309</guid></item><item><title><![CDATA[New comment by SigmundA in "What game engines know about data that databases forgot"]]></title><description><![CDATA[
<p>>Cache locality by default. In a traditional row store, reading all player positions means loading entire rows — names, inventories, health, everything. Most of those bytes are wasted.<p>Not one mention of column stores? This didn't come from ECS...<p><a href="https://en.wikipedia.org/wiki/Data_orientation" rel="nofollow">https://en.wikipedia.org/wiki/Data_orientation</a></p>
]]></description><pubDate>Thu, 09 Apr 2026 19:02:16 +0000</pubDate><link>https://news.ycombinator.com/item?id=47708196</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=47708196</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47708196</guid></item><item><title><![CDATA[New comment by SigmundA in "Data centers are transitioning from AC to DC"]]></title><description><![CDATA[
<p>The batteries and phone lines were one system at -48v with power supplies converting AC power to DC while grid / generator is up.<p>The batteries are floated at the line voltage nothing was really charging or discharging and there was no switchover.<p>This is similar to your cars 12v dc power system such the when the car is running the alternator is providing DC power and the batteries float doing nothing except buffering large fluctuations stabilizing voltage.</p>
]]></description><pubDate>Wed, 25 Mar 2026 11:18:37 +0000</pubDate><link>https://news.ycombinator.com/item?id=47515851</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=47515851</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47515851</guid></item><item><title><![CDATA[New comment by SigmundA in "Urea prices"]]></title><description><![CDATA[
<p>Not sure what your point is, I was talking primarily about Class 8 heavy duty commercial trucks (semi) and other medium duty commercial use.<p>All the stuff that makes up emissions gear is highly recyclable and in fact some of it very desirable which is why people are getting catalytic converters stolen. So I do not worry about it filling up a land fill.<p>I also don't worry about EV batteries filling landfills because again they are very high grade ore for new batteries, once we have enough in circulation we no longer need to mine much lithium or rare earth.<p>I agree it should be reliable and repairable and forcing the manufacturers to have very long warranties on it seems like a good way to do that, having followed the various generations of DEF systems for the last decade the manufacturers have been making big strides because it costs them otherwise and has.<p>I also think airplanes using lead is stupid, but that is a fraction of even private diesel pickup usage let alone commercial trucking. Diesel pickups are at least 10% of all pickup sales now days.</p>
]]></description><pubDate>Thu, 12 Mar 2026 03:31:45 +0000</pubDate><link>https://news.ycombinator.com/item?id=47346104</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=47346104</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47346104</guid></item><item><title><![CDATA[New comment by SigmundA in "Urea prices"]]></title><description><![CDATA[
<p>No the DEF systems tend to break down and its mandated the engine go into limp mode when they do, this is hated by those that do not care for emissions and one of the biggest reason to delete by truckers. Also costly to fix the systems out of warranty.<p>You can find instructions on how to make DEF simulators using raspi's to fool the ECU into think the DEF system is working, people who do care about emissions will still carry these for emergency so they continue on their trip and get to a shop later. The derate was over zealous for sure and was a bad policy.<p>Also DPF is a performance issue since it blocks the exhaust to some degree, same with catalytic converter with def nozzle so no its not just EGR at all. DPF also consumes more fuel for regens.<p>2027 diesel regulations was to mandate even more NOx control but also specified manufacturers were required to have 100,000 mile 10 year warranty on emissions systems, its 5 year, 50k now. I believe thats dead in the water now.<p>A diesel engine with a deleted SCR system puts out 40 times the NOx of a working one. Thats 40 trucks going down the road to 1 equivalent. NOx causes asthma and acid rain, its not for the environment as much as for you directly.</p>
]]></description><pubDate>Thu, 12 Mar 2026 03:03:12 +0000</pubDate><link>https://news.ycombinator.com/item?id=47345879</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=47345879</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47345879</guid></item><item><title><![CDATA[New comment by SigmundA in "Urea prices"]]></title><description><![CDATA[
<p>There are three main emissions control systems in diesels, the Exhaust Gas Recirculation (EGR), Diesel Particulate Filter (DPF) and Selective Catalytic Reduction (SCR) which uses Diesel Exhaust Fluid (DEF).<p>Any or all can be "deleted" and is a crime to do so. All 3 systems add complexity and potentially reduce performance which is why those who don't care about emissions like to get rid of them.<p>Before DEF NOx regulations steadily went up engine manufacturers relied on increasing amounts of EGR to control NOx until it was not tenable, once DEF systems where implemented they could back off EGR increasing performance but not as much as ripping it all out and tuning for no care of emissions.<p>There are EGR free engines that rely entirely on DEF to control NOx but they are not for on-road use in the US thus far.</p>
]]></description><pubDate>Thu, 12 Mar 2026 02:55:26 +0000</pubDate><link>https://news.ycombinator.com/item?id=47345817</link><dc:creator>SigmundA</dc:creator><comments>https://news.ycombinator.com/item?id=47345817</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47345817</guid></item></channel></rss>