Original link: https://1link.fun/blog/issue/issue68/
Smart speakers that can mute specific areas
A paper from the University of Washington mentioned that they developed a smart speaker solution that can mute the sound in a certain area. The solution consists of many microphones and speakers connected to each other through wireless protocols. The microphones will be automatically dispersed to various parts of the room. In corners (which can avoid obstacles and automatically return to the charging station for charging), each microphone collects the sound closest to itself, so that the neural network can be used to separate each person’s voice, and at the same time, the purpose of sound control in a specific area can be achieved based on the position information of the microphone.
In a smart home scenario, a possible case is to allow only people sitting in the sofa area to control the TV.
Currently, these microphones can only move on flat surfaces such as tables, but the team’s ultimate goal is to build a microphone robot that can move freely around the house.
Deposit your bank balance with 128-bit integers
TigerBeetle is a financial audit database system. They recently changed the bank balance field from 64-bit integers to 128-bit integers.
Their database does not use floating point numbers to store balances, but uses integers. The specific implementation method is to store multiples of the smallest currency unit. For example, 1.24 U.S. dollars is stored as 124 cents. This design results in that in some scenarios, 64-bit integers may It is not enough. For example, the balance of digital currencies is generally many places after the decimal point. Another example is that the stock market requires price changes to be accurate to 0.0001 cents.
Find My Cat: Pet Tracking Solution
This website provides a pet tracking solution. You only need to put a tracker on your pet and you can find it on your phone. Use SIM card + GPS for outdoor use, and Bluetooth for precise positioning indoors.
The software and hardware of the entire method are open source, and those with strong hands-on skills can try it themselves.
Weird shortcut key combinations on Windows
Windows has some strange built-in shortcut key combinations that can “quickly” open certain applications and websites, such as:
Word – CTRL + SHIFT + ALT + WIN + W
Excel – CTRL + SHIFT + ALT + WIN + X
PowerPoint – CTRL + SHIFT + ALT + WIN + P
in addition:
LinkedIn – CTRL + SHIFT + ALT + WIN + L
The key is that this shortcut requires pressing too many keys.
Open source book scanning device
An open source book scanning device that can automatically scan paper books into electronic files and support automatic page turning.
Taking stock of “fake” text chats in Apple’s promotional materials
This article compiles the iMessage conversation content and mailing lists that Apple has carefully designed in iOS promotional materials since 2010. It is very interesting. For example, each iOS version of the material has exclusive fake contact names. These names Basically it will not be repeated or reused.
Having said that, among these materials, I really like to use iMessage to send pictures.
Split your files into multiple encrypted “horcruxes”
This author must be a fan of Harry Potter. He borrowed the concept of “Horcruxes” from Harry Potter to develop a file encryption program that can disperse one of your files into multiple encrypted files.
The Readme teases that it is a software developed by [Tom Riddle].
Online Ping Pong Game
Play the ping pong game on PC browser, as shown above, there are so many versions.
Product Mockup Making Tools
A website for making product mockups, just upload the image, select the model (also supported by the latest iPhone 15 series), background image (supports gradient, solid color, image background, and supports generating gradient background based on the main color of the image), and you can download it for free without watermark to local
Apple continues to use our mortality as marketing
The article believes that Apple has been using people’s mortality rate for marketing in recent years. If you don’t use Apple Watch, you may be bitten by a bear, drown in a sinking car, or fall into an icy lake and die of hypothermia. … …
In the promotional video for Apple Watch and iPhone, thanks to Apple Watch, someone received a pacemaker surgery in time, someone was rescued in a storm, and a pregnant woman was sent to the hospital in time to give birth.
It’s not that these features are bad, but the article thinks that Apple’s promotion method makes people feel uncomfortable. Its ads are selling fear rather than hope (They’re ads that play off fear rather than hope), conveying a feeling of not buying Apple. The product is the message that you are risking your life (buy an Apple device or risk your life)
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