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| What's the real reason that laptop batteries are made not-accessible? |
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| james_s:
--- Quote from: NiHaoMike on December 08, 2021, 01:44:14 am ---Are you also the kind to complain that the latest RTX 3090 doesn't have a VGA port so you can't plug your Trinitron into it? Really, single ended signals that can go below ground aren't the easiest to design particularly for portable devices and is also not ideal for signal quality. I suppose a differential analog audio standard for consumer use could be developed, but it would be facing a losing battle compared to digital audio. --- End quote --- I have no idea what a RTX 3090 is so I don't know. I do still have a nice Trinitron TV set up in my rec room though, I mostly use it for the vintage console games. Oh come on, not the easiest? That's absurd. Analog headphone audio is a problem solved decades ago, it is trivial, even easier now than it was then with single chip class D amplifier solutions that can run off batteries and produce ample power. If I can buy a $10 MP3 player from China that sounds great through analog headphones then there is no reason a $500 smartphone should lack that capability. My current iPhone has a headphone jack that works perfectly fine, I'm just not sure what I'd replace it with if I ever have to upgrade. |
| SilverSolder:
Wireless headphones are now passé, all the cool kids want wired headphones now! https://www.teenvogue.com/story/wired-headphones-2021-it-accessory https://www.insidehook.com/daily_brief/internet/gen-z-making-wired-headphones-cool-again https://www.digitalmusicnews.com/2021/11/22/wired-earphones-comeback/ If you're not "Committed to the wire", you are just basically uncool! :D |
| james_s:
--- Quote from: ejeffrey on December 07, 2021, 10:40:16 pm ---Cheap SD cards are slow, their presence significantly complicates the UI and device management needs to pick what goes on internal vs. external storage, and it is hard to reconcile with "just works" device encryption. --- End quote --- So don't use cheap SD cards, just require cards of a certain class and display a warning if it is too slow. The UI and device management is not rocket science, this is another largely solved problem, just have a selection for photos, videos, music and podcasts, store internally or store on removable storage by default. For retrieval just automatically grab items from both locations. There is IMO no reason to support storing apps and other things on the SD card, it is only needed for media storage. A competent project manager could spec out this functionality in a day. |
| SiliconWizard:
Support for SD cards in any modern mobile device takes an absolutely negligible amount of resources compared to all the rest. It's absolutely nearly "zero" cost software-wise, considering how gigantic software on those has become. And support is built in OSs that those phones use anyway. Software-wise, everything is already solved on the OS level. There is absolutely nothing to do, except actually explicitely configure the OS (say, Android) without SD card support if you absolutely want to trim that. Which is an extra effort. Now sure, you have the annoyance of having to add an SD card connector. It doesn't even have to be accessible "externally", since most phones have used trays for SD cards for years, most often combined with the SIM card. |
| NiHaoMike:
--- Quote from: james_s on December 08, 2021, 02:30:49 am ---Oh come on, not the easiest? That's absurd. Analog headphone audio is a problem solved decades ago, it is trivial, even easier now than it was then with single chip class D amplifier solutions that can run off batteries and produce ample power. If I can buy a $10 MP3 player from China that sounds great through analog headphones then there is no reason a $500 smartphone should lack that capability. My current iPhone has a headphone jack that works perfectly fine, I'm just not sure what I'd replace it with if I ever have to upgrade. --- End quote --- The problem comes down to either you'll have to have fairly large coupling caps to allow the use of a single voltage rail or you'll have to add a negative rail to a device that otherwise would not need one. Then there's the issue that while it works well for headphones since they don't have any other connection to ground, using it to connect an amplifier is just asking for ground loops. Making a new consumer standard for differential analog audio with allowance for up to a few volts of common mode offset solves both those problems, but such a standard has few advantages compared to USB audio. Most higher end consumer amplifiers nowadays are digital so a digital interconnect makes a lot of sense. --- Quote from: SilverSolder on December 08, 2021, 02:33:03 am ---Wireless headphones are now passé, all the cool kids want wired headphones now! https://www.teenvogue.com/story/wired-headphones-2021-it-accessory https://www.insidehook.com/daily_brief/internet/gen-z-making-wired-headphones-cool-again https://www.digitalmusicnews.com/2021/11/22/wired-earphones-comeback/ If you're not "Committed to the wire", you are just basically uncool! :D --- End quote --- If studio style headphones become "cool" instead of IEMs, that would give plenty of room for additional batteries. With USB-C, those batteries can supply extra power to the phone or other portable device. It could then be possible to make it dual mode wired or wireless and even have seamless switching between those modes. |
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