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AI and brain interfaces may be about to change how we make music
Computer control in the form of AI and brain-computer interfaces is being introduced to the art of composing.
When Yamaha demonstrated their AI allowing a dancer to play the piano with movement in a Tokyo concert hall in November 2017, it was the latest example of the ways in which computers are increasingly getting involved in music-making. We’re not talking about the synthesizers and other CPU-based instruments in contemporary music. We’re talking about computers’ potential as composers’ tools, or as composers themselves.
Yamaha’s use of AI is quite different. In the recent performance, world-renowned dancer Kaiji Moriyama was outfitted with electrodes on his back, wrists, and ankles, and set free to express himself as AI algorithms converted his movements into musical phrases for transmission to Yamaha’s Disklavier piano via MIDI messages. (MIDI is a computer language through which musical instruments can be controlled.)
Yamaha’s AI, which they’re still developing, worked with a database of linked musical phrases from which it selected and drew melodies for sending to the instrument based on Moriyama’s motions.
Moriyama was accompanied onstage by the Berlin Philharmonic Orchestra Scharoun Ensemble.
We’ve written previously about other musical AI, the web-based AI platform called Amper that uses AI to compose passages based on descriptors of style, instrumentation, and mood. Singer/songwriter Taryn Southern was using Amper as her primary collaborator in writing an album.
Another fascinating avenue being explored is the use of brain-to-computer (BCI) interfaces that allow wearers to think music into existence. It’s a fascinating way for anyone to play music, but it’s especially promising for people whose physical limitations make the creation of music difficult or even impossible otherwise.
Certain electroencephalogram signals correspond to known brain activities such as the P300 ERP (for “event-related potential”) that signifies a person’s reaction to some stimulus. It’s previously been by brain-computer interface (BCI) applications in spelling, operating local environmental controls, operating web browsers, and for painting. In September 2017, researchers led by BCI expert Gernot Müller-Putz from TU Graz's Institute of Neural Engineering published research in PLOS/One describing their “Brain Composer” project that leveraged P300 to bring musical ideas directly from composers’ mind to notated sheets of music. They work in collaboration with MoreGrasp and "Feel Your Reach”.
The researchers’ first step was training the BCI application to recognize alphabetical letters before moving on to note length and pitch, as well as notation values such as rests, ties, and such. In this video, the researchers demonstrate the successful outcome of just 90-minutes’ work for a motor-impaired subject.
This is all exciting stuff — and a heaven-send for musical souls with physical limitations — even if the results are a little odd, as in Yamaha’s case. (The BCI example sounds remarkably like the theme from Fringe.)
We’ve been augmenting our natural musical capabilities with technology ever since we picked up our first rock — and certainly by the time we honked steam-punk-looking saxophones. We should have no issue with adding AI and BCIs to our toolbox.
If AI comes up with music we might not, that’s fine. The workings of music remain pretty mysterious, in any event, so here’s an intriguing thought. Though many of us basically prefer music that’s catchy and sonorous, the stuff that really gets us in the gut tends to have something of the unexpected to it, a surprising dissonance or rhythm, and odd “hair” out of place, that makes the moment leap from our speakers or the stage and into our lives as more of an experience than a piece of art, leaving us a little startled and even moved. So if AI can beat a flesh-and-blood chess player by not thinking like a human, imagine what we’re about to hear.
A new study finds that dogs fed fresh human-grade food don't need to eat—or do their business—as much.
- Most dogs eat a diet that's primarily kibble.
- When fed a fresh-food diet, however, they don't need to consume as much.
- Dogs on fresh-food diets have healthier gut biomes.
Four diets were tested<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNTU5ODI1MS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY1NjY0NjIxMn0._w0k-qFOC86AqmtPHJBK_i-9F5oVyVYsYtUrdvfUxWQ/img.jpg?width=980" id="1b1e4" class="rm-shortcode" data-rm-shortcode-id="87937436a81c700a8ab3b1d763354843" data-rm-shortcode-name="rebelmouse-image" data-width="1440" data-height="960" />
Credit: AntonioDiaz/Adobe Stock<p>The researchers tested refrigerated and fresh human-grade foods against kibble, the food most dogs live on. The <a href="https://frontierpets.com.au/blogs/news/how-kibble-or-dry-dog-food-is-made" target="_blank">ingredients</a> of kibble are mashed into a dough and then extruded, forced through a die of some kind into the desired shape — think a <a href="https://en.wikipedia.org/wiki/Food_extrusion" target="_blank">pasta maker</a>. The resulting pellets are sprayed with additional flavor and color.</p><p>For four weeks, researchers fed 12 beagles one of four diets:</p><ol><li>a extruded diet — Blue Buffalo Chicken and Brown Rice Recipe</li><li>a fresh refrigerated diet — Freshpet Roasted Meals Tender Chicken Recipe</li><li>a fresh diet — JustFoodforDogs Beef & Russet Potato Recipe</li><li>another fresh diet — JustFoodforDogs Chicken & White Rice Recipe.</li></ol><p>The two fresh diets contained minimally processed beef, chicken, broccoli, rice, carrots, and various food chunks in a canine casserole of sorts. </p><p>(One can't help but think how hard it would be to get finicky cats to test new diets. As if.)</p><p>Senior author <a href="https://ansc.illinois.edu/directory/ksswanso" target="_blank" rel="noopener noreferrer">Kelly S. Swanson</a> of U of I's Department of Animal Sciences and the Division of Nutritional Sciences, was a bit surprised at how much better dogs did on people food than even refrigerated dog chow. "Based on past research we've conducted I'm not surprised with the results when feeding human-grade compared to an extruded dry diet," he <a href="https://aces.illinois.edu/news/feed-fido-fresh-human-grade-dog-food-scoop-less-poop" target="_blank">says</a>, adding, "However, I did not expect to see how well the human-grade fresh food performed, even compared to a fresh commercial processed brand."</p>
Tracking the effect of each diet<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNTU5ODI1OC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY3NjY1NTgyOX0.AdyMb8OEcjCD6iWYnXjToDmcnjfTSn-0-dfG96SIpUA/img.jpg?width=980" id="da892" class="rm-shortcode" data-rm-shortcode-id="880d952420679aeccd1eaf32b5339810" data-rm-shortcode-name="rebelmouse-image" data-width="1440" data-height="960" />
Credit: Patryk Kosmider/Adobe Stock<p>The researchers tracked the dogs' weights and analyzed the microbiota in their fecal matter.</p><p>It turned out that the dogs on kibble had to eat more to maintain their body weight. This resulted in their producing 1.5 to 2.9 times the amount of poop produced by dogs on the fresh diets.</p><p>Says Swanson, "This is consistent with a 2019 National Institute of Health study in humans that found people eating a fresh whole food diet consumed on average 500 less calories per day, and reported being more satisfied, than people eating a more processed diet."</p><p>Maybe even more interesting was the effect of fresh food on the gut biome. Though there remains much we don't yet know about microbiota, it was nonetheless the case that the microbial communities found in fresh-food poo was different.</p><p>"Because a healthy gut means a healthy mutt," says Swanson, "fecal microbial and metabolite profiles are important readouts of diet assessment. As we have shown in <a href="https://academic.oup.com/jas/article/92/9/3781/4702209#110855647" target="_blank">previous studies</a>, the fecal microbial communities of healthy dogs fed fresh diets were different than those fed kibble. These unique microbial profiles were likely due to differences in diet processing, ingredient source, and the concentration and type of dietary fibers, proteins, and fats that are known to influence what is digested by the dog and what reaches the colon for fermentation."</p>
How did kibble take over canine diets?<p>Historically, dogs ate scraps left over by humans. It has only been <a href="https://www.thefarmersdog.com/digest/the-history-of-commercial-pet-food-a-great-american-marketing-story/" target="_blank">since 1870</a>, with the arrival of the luxe Spratt's Meat Fibrine Dog Cakes—made from "the dried unsalted gelatinous parts of Prairie Beef", mmm—that commercial dog food began to take hold. Dog bone-shaped biscuits first appeared in 1907. Ken-L Ration dates from 1922. Kibble was first extruded in 1956. Pet food had become a great way to turn <a href="https://www.dogfoodadvisor.com/choosing-dog-food/animal-by-products/" target="_blank">human-food waste</a> into profit.</p><p>Commercial dog food became the norm for most household canines only after a massive marketing campaign led by a group of dog-food industry lobbyists called the Pet Food Institute in 1964. Over time, for most households, dog food was what dogs ate — what else? Human food? These days more than half of U.S. dogs are <a href="https://www.nytimes.com/2014/08/03/magazine/who-made-that-dog-biscuit.html" target="_blank">overweight or obese</a>, and certainly their diet is a factor.<span></span></p><p>We're not so special among animals after all. If something's healthy for us to eat—we're <em>not</em> looking at you, chocolate—maybe we should remember to share with our canine compatriots. Not from the table, though.</p>
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Eating veggies is good for you. Now we can stop debating how much we should eat.
- A massive new study confirms that five servings of fruit and veggies a day can lower the risk of death.
- The maximum benefit is found at two servings of fruit and three of veggies—anything more offers no extra benefit according to the researchers.
- Not all fruits and veggies are equal. Leafy greens are better for you than starchy corn and potatoes.