Study: Why Aztec “death whistles” sound like human screams

The basic mechanism relies on the Venturi effect, producing a unique rough and piercing sound.

Archaeologists have discovered numerous ceramic or clay whistles at Aztec sites, dubbed "death whistles" because of their distinctive skull shapes. A new paper published in the journal Communications Psychology examines the acoustical elements of the unique shrieking sounds produced by those whistles, as well as how human listeners are emotionally affected by the sounds. The findings support the hypothesis that such whistles may have been used in Aztec religious rituals, or perhaps as mythological symbols.

Archaeologists unearthed the first Aztec death whistles, also known as ehecachichtlis, in 1999 while excavating the Tlatelolco site in Mexico City. They found the body of a sacrificial victim, a 20-year-old male who had been beheaded, at the base of the main stairway of a temple dedicated to the wind god Ehecatl. The skeleton was clutching two ceramic skull-shaped whistles, one in each hand, along with other artifacts. More skull whistles were subsequently found, and they've found their way into popular culture. For instance, in Ghostbusters: Afterlife (2021), Egon Spengler had such a whistle in his secret laboratory collection.

Scholars have puzzled over the purpose of the skull whistles, although given the dearth of concrete evidence, most suggestions are highly speculative. One hypothesis is that it was used in battle, with hundreds of warriors blowing their whistles simultaneously as a battle cry. Music archaeologist Arnd Adje Both has dismissed that idea, suggesting instead that the whistle's purpose was more likely tied to ceremonial or religious practices, like human sacrifice. Yet another hypothesis proposes that the whistles were intended as symbols of a deity. The skull shape, for instance, might allude to the Aztec god of the underworld, Mictlantecuhtli.

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DS Pixel Keyboard is also a touchscreen display with removable keycaps (crowdfunding)

The DS Pixel Keyboard is a customizable keyboard that uses a 14 inch, 3840 x 1100 pixel IPS LCD touchscreen display as its input surface. This allows you to use configure custom keyboard layouts, change languages, or use the “keyboard” as a…

The DS Pixel Keyboard is a customizable keyboard that uses a 14 inch, 3840 x 1100 pixel IPS LCD touchscreen display as its input surface. This allows you to use configure custom keyboard layouts, change languages, or use the “keyboard” as a different form of input device for audio or video editing, creating graphics, and […]

The post DS Pixel Keyboard is also a touchscreen display with removable keycaps (crowdfunding) appeared first on Liliputing.

Microsoft pushes full-screen ads for Copilot+ PCs on Windows 10 users

Microsoft has frequently used this kind of reminder to encourage upgrades.

Windows 10's free, guaranteed security updates stop in October 2025, less than a year from now. Windows 10 users with supported PCs have been offered the Windows 11 upgrade plenty of times before. But now Microsoft is apparently making a fresh push to get users to upgrade, sending them full-screen reminders recommending they buy new computers.

The reminders, which users have seen within the last few days, all mention the end of Windows 10 support but otherwise seem to differ from computer to computer. My Ars colleague Kyle Orland got one focused on Windows 11's gaming features, while posters on X (formerly Twitter) got screens that emphasized the ease of migrating from old PCs to new ones and other Windows 11 features. One specifically recommended upgrading to a Copilot+ PC, which supports a handful of extra AI features that other Windows 11 PCs don't, but other messages didn't mention Copilot+ specifically.

None of the messages mention upgrading to Windows 11 directly, though Kyle said his PC meets Windows 11's requirements. These messages may be intended mostly for people using older PCs that can't officially install the Windows 11 update.

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SpaceX just got exactly what it wanted from the FAA for Texas Starship launches

“All pertinent conditions and requirements of the prior approval have been met.”

A day after SpaceX launched its Starship rocket for the sixth time, the company received good news from the Federal Aviation Administration regarding future launch operations from its Starbase facility in South Texas.

In a draft version of what is known as an "Environmental Assessment," the FAA indicated that it will grant SpaceX permission to increase the number of Starship launches in South Texas to 25 per year from the current limit of five. Additionally, the company will likely be allowed to continue increasing the size and power of the Super Heavy booster stage and Starship upper stage.

"FAA has concluded that the modification of SpaceX’s existing vehicle operator license for Starship/Super Heavy operations conforms to the prior environmental documentation, consistent with the data contained in the 2022 PEA, that there are no significant environmental changes, and all pertinent conditions and requirements of the prior approval have been met or will be met in the current action," the federal agency stated in its conclusion.

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SpaceX just got exactly what it wanted from the FAA for Texas Starship launches

“All pertinent conditions and requirements of the prior approval have been met.”

A day after SpaceX launched its Starship rocket for the sixth time, the company received good news from the Federal Aviation Administration regarding future launch operations from its Starbase facility in South Texas.

In a draft version of what is known as an "Environmental Assessment," the FAA indicated that it will grant SpaceX permission to increase the number of Starship launches in South Texas to 25 per year from the current limit of five. Additionally, the company will likely be allowed to continue increasing the size and power of the Super Heavy booster stage and Starship upper stage.

"FAA has concluded that the modification of SpaceX’s existing vehicle operator license for Starship/Super Heavy operations conforms to the prior environmental documentation, consistent with the data contained in the 2022 PEA, that there are no significant environmental changes, and all pertinent conditions and requirements of the prior approval have been met or will be met in the current action," the federal agency stated in its conclusion.

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Fitness app Strava is tightening third-party access to user data

Training apps, AI use, and trend analysis seem to be off-limits in Strava’s API.

The Strava app is one of the most popular ways for cyclists, runners, hikers, and other distance sports enthusiasts to track their performance and grab some bragging rights. Because most athletic types will have the app installed already—and because it's hard or impossible to run two tracking apps at once—many apps use Strava's API as a go-between for workout data.

Strava emailed its more than 100 million users earlier this week to notify them about "important updates on how Strava data can be displayed, accessed, and used by third-party apps." In the update, Strava noted that third-party apps "are no longer able to display your Strava activity data on their surfaces to other users," that Strava's API data cannot be used "in artificial intelligence models or other similar applications," and that third-party apps must be designed so as to "complement" Strava's look and feel "rather than replicating it."

What does this actually mean? It depends on which apps you're using. DC Rainmaker, a longtime fitness tech blogger, sees the "other users" clause as something that "immediately break[s] almost all coaching apps that have connections to Strava." If an app needs to see your Strava workout to provide insights on performance or connect you to a group, Strava's API seems to block it now. A manager at the training app Intervals posted on the app's official forum that the API change would break Intervals' ability to use Strava as its data source.

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Fitness app Strava is tightening third-party access to user data

Training apps, AI use, and trend analysis seem to be off-limits in Strava’s API.

The Strava app is one of the most popular ways for cyclists, runners, hikers, and other distance sports enthusiasts to track their performance and grab some bragging rights. Because most athletic types will have the app installed already—and because it's hard or impossible to run two tracking apps at once—many apps use Strava's API as a go-between for workout data.

Strava emailed its more than 100 million users earlier this week to notify them about "important updates on how Strava data can be displayed, accessed, and used by third-party apps." In the update, Strava noted that third-party apps "are no longer able to display your Strava activity data on their surfaces to other users," that Strava's API data cannot be used "in artificial intelligence models or other similar applications," and that third-party apps must be designed so as to "complement" Strava's look and feel "rather than replicating it."

What does this actually mean? It depends on which apps you're using. DC Rainmaker, a longtime fitness tech blogger, sees the "other users" clause as something that "immediately break[s] almost all coaching apps that have connections to Strava." If an app needs to see your Strava workout to provide insights on performance or connect you to a group, Strava's API seems to block it now. A manager at the training app Intervals posted on the app's official forum that the API change would break Intervals' ability to use Strava as its data source.

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Comcast to ditch cable TV networks in partial spinoff of NBCUniversal assets

Comcast to spin off USA, CNBC, MSNBC, and others, will keep Peacock streaming.

Comcast today announced plans to spin off NBCUniversal cable TV networks such as USA, CNBC, and MSNBC into a new publicly traded company. Comcast is trying to complete the spinoff in one year, effectively unwinding part of the NBCUniversal acquisition it completed in 2011.

The entities in the planned spinoff generated about $7 billion of revenue in the 12 months that ended September 30, 2024, Comcast said. But cable TV channels have become less lucrative in an industry that's shifting to the streaming model, and the spinoff would let Comcast remove those assets from its earnings reports. Comcast's total revenue in the 12-month period was about $123 billion.

Comcast President Mike Cavanagh said in the Q3 earnings call on October 31 that Comcast is "experiencing the effects of the transition in our video businesses and have been studying the best path forward for these assets."

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Comcast to ditch cable TV networks in partial spinoff of NBCUniversal assets

Comcast to spin off USA, CNBC, MSNBC, and others, will keep Peacock streaming.

Comcast today announced plans to spin off NBCUniversal cable TV networks such as USA, CNBC, and MSNBC into a new publicly traded company. Comcast is trying to complete the spinoff in one year, effectively unwinding part of the NBCUniversal acquisition it completed in 2011.

The entities in the planned spinoff generated about $7 billion of revenue in the 12 months that ended September 30, 2024, Comcast said. But cable TV channels have become less lucrative in an industry that's shifting to the streaming model, and the spinoff would let Comcast remove those assets from its earnings reports. Comcast's total revenue in the 12-month period was about $123 billion.

Comcast President Mike Cavanagh said in the Q3 earnings call on October 31 that Comcast is "experiencing the effects of the transition in our video businesses and have been studying the best path forward for these assets."

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