georgecarlyle76 brought our attention to Amazon’s claim of an algorithm that “solves the ‘second-screen problem’ in real-time.”
“Ever hear (no pun intended) of audio watermarking?” asks VentureBeat.
It’s the process of adding distinctive sound patterns identifiable to PCs, and it’s a major way web video hosts, set-top boxes, and media players spot copyrighted tracks. But watermarking schemes aren’t particularly reliable in noisy environments, like when the audio in question is broadcasted over a loudspeaker. The resulting noise and interference — referred to in academic literature as the “second-screen” problem — severely distorts watermarks, and introduces delays that detectors often struggle to reconcile. Researchers at Amazon, though, believe they’ve pioneered a novel workaround, which they describe in a paper newly published on the preprint server Arxiv (“Audio Watermarking over the Air with Modulated Self-Correlation”) and an accompanying blog post. The team claims their method — which they’ll detail at the International Conference on Acoustics, Speech, and Signal Processing in May — can detect watermarks added to about two seconds of audio with “almost perfect accuracy,” even when the distance between the speaker and detector is greater than 20 feet…
So how’s it work? As Tai explains, the model employs a “spread-spectrum” technique in which watermark energy is spread across time and frequency, rendering it inaudible to human ears while robustifying it against postprocessing (like compression). And it generates watermarks from noise blocks of a fixed duration, each of which introduces its own distinct pattern to selected frequency components in the host audio signal. Conventional detectors would compare the resulting sequence of noise blocks — the decoding key — with a reference copy. But Tai and colleagues take a different approach: Their algorithm embeds the noise pattern in the audio signal multiple times and compares it to itself. Because said signal passes through the same acoustic environment, Tai explains, instances of the pattern are distorted in similar ways, enabling them to be compared directly. “The detector takes advantage of the distortion due to the acoustic channel, rather than combatting it,” he added.

“Audio content that Alexa plays — music, audiobooks, podcasts, radio broadcasts, movies — could be watermarked on the fly,” explains Amazon’s blog post. It argues that this could be useful “so that Alexa-enabled devices can better gauge room reverberation and filter out echoes.”

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Source: Slashdot – Alexa Scientists Claim Audio Watermarking Technique Nearing 100% Accuracy

Long-time Slashdot reader occidental shares a link to the audio of a new interview with the authors of the 2017 article “The Jobs That Artificial Intelligence Will Create” Authors Paul Daugherty and H. James Wilson show that four soft skills are becoming much more valuable as human-machine collaboration advances. These skills include complex reasoning, creativity, social and emotional intelligence, and sensory perception.

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Source: Slashdot – Revisiting the Jobs Artificial Intelligence Will Create

Technology writer Tom Chanter explores the life story of venture capitalist Marc Andreessen to ask whether software will not only eat the world, but also the jobs of what one historian predicts will be a “massive new unworking class: people devoid of any economic, political or even artistic value.” Can Marc Andreessen prevent a so-called “useless class” who “will not merely be unemployed — it will be unemployable”?

Andreessen grew up in New Lisbon, Wisconsin (population: 1,500), and taught himself the BASIC programming language at age 8. He co-developed the original Mosaic web browser before he’d graduated from college, went on to co-found Netscape, and by age 23 was worth $53 million. He then transformed into a “super angel” investor in companies like Twitter, Airbnb, Lyft, Facebook, Skype, and GitHub. “Having been an innovator in the tech start-up game, Andreessen is now an innovator in the tech venture capital game,” writes Chanter. “He is a jedi that has become the master.”

In 2011, Marc Andreessen published an article in the Wall Street Journal titled, Why Software Is Eating The World. He wrote, “Over the next 10 years, the battles between incumbents and software-powered insurgents will be epic….” 7 years later, it’s clear Andreessen was correct. Lyft has destroyed taxi jobs. Airbnb has destroyed hotel jobs. Amazon destroyed independent bookstores. How does Andreessen feel about that? “Screw the independent bookstores,” he said in his New Yorker profile. “There weren’t any near where I grew up. There were only ones in college towns. The rest of us could go pound sand.”
But the 4,900-word article also notes Andreessen’s pledge to give half his income to charitable causes — and his observation in a 2015 interview that outside of the United States, global income inequality is falling, not rising. “He has seen technology transform his own life, and has seen how technology has bridged the global wealth gap. Why shouldn’t he be optimistic about the future of America’s working class?”

And Andreessen’s ultimate answer to the jobs destroyed by technology may be Udacity. The article cites Andreessen’s investment in the company in 2012, and points to the online education platform’s hopeful mission statement. “Virtually anyone on the planet with an internet connection and a commitment to self-empowerment through learning can come to Udacity, master a suite of job-ready skills, and pursue rewarding employment.”
As a boy in Wisconsin he was starved for information. He has created an education institution accessible from Wisconsin to Africa. As a boy in Wisconsin he was starved for connection. He has married an innovative philanthropist and author, Laura Arrillaga-Andreessen. They have a son named John. Andreessen is optimistic for both the working class and the future tech elite.
In his New Yorker profile he says of his son, “He’ll come of age in a world where ten or a hundred times more people will be able to contribute in science and medicine and the arts, a more peaceful and prosperous world.”
He added, tongue in cheek, “I’m going to teach him how to take over that world!”

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Source: Slashdot – Can Marc Andreessen Stop Technology From Eating Our Jobs?