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This new underwater camera is powered by sound – CBC.ca

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As It Happens6:24Scientists develop a wireless underwater camera that’s powered by sound

What if you could photograph the deepest depths of the sea using a camera powered only by the ocean’s soundscape?

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That’s the end goal of a new prototype device developed by scientists at the Massachusetts Institute of Technology (MIT) — a wireless, battery-free underwater camera that runs on sound waves. 

“The way it works is that, underwater, actually, you have a lot of sound,” Fadel Adib, an associate professor of electrical engineering and computer science at MIT, told As It Happens host Nil Köksal.

“The sound comes from the waves, sounds of animals and so on and so forth. You also have ships. And all of these cause underwater sound.”

Adib and his colleagues authored a paper outlining their prototype, published this week in the journal Nature Communications. They say it can take colour photos in dark environments, and is 100,000 times more energy-efficient than other undersea cameras.

So much ocean left to explore

The ocean makes up about 70 per cent of the planet’s surface, but marine experts estimate that somewhere between 80 to 95 per cent remains unexplored.

Adib blames that on the limitations of existing underwater cameras. In order to keep them running for a significant period of time, you have to keep them powered by tethering them to a research vessel, or sending a ship to recharge their batteries.

“And so what we ended up doing to overcome this is that we built the first underwater camera that needs no battery, and it can self-power and it can also get data and transmit it back to us,” he said.

WATCH | How MIT’s wireless underwater camera works:

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Guadalupe Bribiesca-Contreras, a postdoctoral researcher at the U.K.’s Natural History Museum who has used underwater photography to discover new deepsea life, called the findings “so exciting.”

“Time-lapse cameras have been used to understand more about life in the deepsea, but a challenge has been how long the batteries last,” she told As It Happens in an email.

“Having a battery-free camera could allow us to better understand the deepsea ecosystems, as well as monitor these.”

How it works

The prototype underwater camera is made up of two domes and a cylinder. One dome houses the image sensor, and the other houses the flash.

The cylinder is covered in a specialized material that allows the camera to harness sound waves and convert them into electrical energy, which it uses to power up. Once powered, the camera emits a low-powered flash that allows it to capture images. It then transmits those images to a remote receiver. 

The prototype underwater camera is made up of two domes and a cylinder. One dome is the image sensor, and the other is the flash. The cylinder is covered in a material that allows it to harvest sound waves and convert it into electrical energy. (Adam Glanzman/MIT)

So far, the researchers have tested the device only in freshwater environments, and they supplied the sound needed to power the device from nearby on the shore. The next phase of research, Adib said, will involve testing it in the ocean off the coast of Cape Cod, Mass., and harnessing sounds from the sea itself. 

“In the future, you can imagine using the existing sounds [such as] dolphins to be able to power them up. But that’s going to require some level of research before we do that,” Adib said.

They’re also working on expanding its communication range transmission time, Adib said. Currently, it’s limited to about 100 metres and takes about two hours to transmit a colour photo.

Once they’ve perfected the technology, Adib says it could have major implications for ocean exploration and climate change research.

“We want to be able to use them to monitor, for example, underwater currents, because these are highly related to what impacts the climate,” he said. “Or even underwater corals, seeing how they are being impacted by climate change and how potentially intervention to mitigate climate change is helping them recover.”

A blurry but colorful picture of a starfish and four rocks.
A starfish photographed by the new underwater camera prototype. (Submitted by Fadel Adib)

It could also be useful in aquaculture, also known as seafood farming.

“We can deploy our cameras in these offshore aquaculture farms and use them for monitoring the fish so that we can monitor their health, react and optimize their feeding and so on and so forth,” Adib said. “It’s a fast growing food sector, and it is very important for the world food security over the next few decades.”

And maybe one day, he says, it could even help us understand another vastly underexplored frontier. 

“We’ve also been in discussions with NASA for future space missions where they want to use them to search for life in extraterrestrial oceans, because that’s where they need to search for life,” Adib said. “That’s yet another area where battery power is extremely difficult.”

The research was funded, in part, by the U.S. Office of Naval Research, the Sloan Research Fellowship, the National Science Foundation, the MIT Media Lab and the Doherty Chair in Ocean Utilization.

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Aaron Sluchinski adds Kyle Doering to lineup for next season – Sportsnet.ca

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Venerable Video App Plex Emerges As FAST Favorite – Forbes

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With cord cutters and streamers becoming more selective about where they invest their subscription dollars and the costs of premium services like Netflix
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rising, FAST (Free Ad-Supported TV) services that offer thick bundles of niche channels and vintage content are on the rise with consumers. One of the more interesting contenders is Plex, a privately-held company that started in the late aughts as an app to help video enthusiasts organize and share their home libraries. Plex expanded into the FAST space in 2018, and today announced it has surpassed a thousand channels (1112, in fact, including a just-announced NFL Channel) in its free-to-stream lineup, making it one of the largest inventories in the market.

The rising popularity of the FAST model, which also appeals to advertisers looking to combine the sizzle of a 30-second spot with the data targeting of an online platform, has drawn a lot of players into the space, each with its own spin on a service that can appear very similar to viewers. After all, how many channels of British murder mysteries, 2000s-era prestige shows and Hallmark tearjerkers can providers squeeze through a fiberoptic cable before viewers cease to care exactly where it’s coming from?

The companies that emerge on top need to deliver a unique and special experience for consumers, combined with a strong value proposition for advertisers. Each big player comes with its own advantages: Roku’s OTT experience, Tubi’s origins as an ad-tech platform, Samsung and LG’s ownership of the TV interface, Amazon
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Prime’s connection to consumers, and so on. Plex’s edge, according to the company’s executives, is its community.

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“We began as a personal media management software,” said Plex CEO Keith Valory, who joined the company in 2012 at the invitation of co-founder and current chief product officer Scott Olechowski. “Eventually, we thought that the more interesting problem to solve over time is media chaos. People shouldn’t have to go to 20 different apps to get the content they want.”

Valory says Plex had grown a fanbase of hardcore videophiles who use the product to keep track of extensive media libraries. These enthusiasts pushed the company to develop rich capabilities around content management, discovery, recommendations, reviews and shareability, which turn out to be important differentiators when viewers are faced with thousands of choices.

Valory says he and Olechowski began building the framework for the AVOD (ad-supported video on demand) strategy in 2017, doing business development deals with studios and building relationships. They launched the service in 2019, just in time to benefit from the COVID streaming boom. “We launched our FAST channels and continued to accelerate the business,” he said. Over time, Plex has added live content, sports and hyperlocal channels to the service, which is available in over 180 countries worldwide, offered through the familiar Plex interface.

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According to Gavin Bridge, VP of Media Research for CPG Global and a FAST-focused analyst who tracks the number of FAST channels in the United States via his monthly FASTMaster report, there were more than 1,963 FAST channels in the U.S. alone as of March 2024. Currently, Plex accounts for 847 of them, and it’s growing every day.

Building click-appeal for viewers is one part of the FAST equation, but the other critical component is serving that audience up to advertisers in the narrowest, most targeted slices possible. Every FAST platform has its own proprietary algorithms for targeting and programmatic placement of the right spots to the right viewers, based on what it knows about its audience’s behavior and proclivities. Sponsors need to weigh that when deciding how to allocate their media dollars.

Valory says Plex’s edge comes from its data. “We’re very open about and transparent about sharing data with both our content partners and our advertising partners within privacy limits,” he said. “But we also have a different, more affluent set of users because they’re coming in to manage a number of their subscriptions and whatnot. We can identify them in aggregate [preserving privacy] and essentially create high-end profiles of what users are watching across every device, every country and every service.”

Because of its unique heritage, Plex has data that no one else has, relating to user behavior behind the firewall in consuming their owned video content. Valory says that many users opt in to sharing this data to improve recommendations and relevance. “We have an opportunity to help advertisers target those users on other platforms like TikTok or Facebook,” Valory said.

The company has also invested in its ad delivery capabilities. “We’re making sure we’ve optimized our ability to stay in the programmatic market, to the point that our programmatic auctions are vastly outperforming our direct sales,” said Todd Hay, VP of Revenue and Engagement for Plex. “The next step was to enrich what that inventory looks like. Advertisers like having that visibility for brand safety.”

Hay says the company uses its detailed data about viewer behavior to help micro-target in-stream trailers, native advertising, sponsored hubs, and opportunities to insert content into a viewer’s watch list with a one-click popup. He says this helps brands target consumers by their affinities: for example, correlating cruise ads to food programming because of the high correlation between those viewers and that product.

The frequency, duration and interruptive nature of these spots – even if they are highly targeted and relevant – has irritated some users, including many in the hardcore Plex fan community, who look askance at the company’s shift in focus away from their beloved media app and toward the streaming market. Many have asked for a premium ad-free paid tier, but that is precluded by FAST content distribution and licensing agreements, according to the company.

Valory acknowledges the concerns of the community. “We love our superfans and their needs are very important,” he said. “I think many of them understand that, realistically, for us to grow and thrive, we can’t just be a personal media server running at home. But at the same time, the largest development team in the company still services the personal media product even though it is not the largest revenue business, and we’re only able to do that because of all the other things we’re doing.

“People will say oh, that’s just the CEO giving a political answer, but I assure you, we talk about this all the time internally, and some of the biggest superfans and loudest users of the product are the people who work here.”

Valory said that Plex, which currently does not disclose financial information, generates roughly 20 percent of its revenues from member subscriptions, which unlock premium capabilities of its media platform, compared to 80 percent from the ad business.

Moving forward, Valory says the company sees opportunities in bundling paid subscription models, using Plex’s detailed knowledge of user tastes and behavior. “Some services are paying insane amounts on user acquisition,” said Valery. “I think our better opportunity is to help other subscriptions bundle and create discounts for end users. We don’t need to take a dime of that; we will make our money on advertising and helping people get the content they want.”

The shakeout of premium SVOD services is just getting underway, and the FAST/AVOD market, with its range of players and distinct value propositions, makes it a difficult environment for advertisers, investors and consumers to place their bets. But whatever the future of streaming holds, Plex is betting that the best strategy is to build out from the center

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New Realme Narzo 70 series phone coming soon, teasers promise faster charging, lag-free performance – gizmochina

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Realme recently launched the Narzo 70 Pro 5G smartphone in India, featuring an appealing design and the Dimensity 7050 chip. The brand has teased the release of a new Narzo phone through its X handle, suggesting it could be another addition to the Narzo 70 series.

New Narzo 70 series phone teased

The above teaser reveals that the upcoming Narzo phone will provide a lag-free experience. The other teaser suggests that the device will arrive with fast charging support. It states that a few minutes of charging will allow it to run for a couple of hours.

The Narzo 70 Pro packs a 5,000mAh battery with 67W fast charging. It is unclear whether the upcoming phone will offer faster charging capabilities than the Narzo 70 Pro. It is advisable to wait for further teasers to confirm the phone’s moniker.

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To recall, the Realme Narzo 70 Pro 5G features a 6.7-inch FHD+ 120Hz AMOLED display with a peak brightness of 2000nits. Powered by the Dimensity 7050 chip, it comes with LPDDR4x RAM and UFS 3.1 storage for smooth performance. It packs a 5000mAh battery and 67W fast charging support.

On the front, the device features a 16-megapixel selfie camera. Its back panel has a 50-megapixel Sony IMX890 primary camera with OIS support, an 8-megapixel ultra-wide lens, and a 2-megapixel macro camera. The phone runs on Realme UI 5-based Android 14.

The Narzo 70 Pro offers other features, such as an IP54-rated chassis, an in-display fingerprint scanner, rainwater smart touch technology, dual speakers, a 3D VC cooling system, and 8GB virtual RAM.

In terms of pricing, the 8GB+128GB variant of the Narzo 70 Pro retails at Rs 17,999 (~$215). On the other hand, the 8GB+256GB variant costs Rs 21,999 (~$265). It comes in Glass Green and Glass Gold shades.

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