Google Creates First AI Doodle for Bach’s Birthday

Google
Google

Although there’s some debate about Johann Sebastian Bach’s exact birth date, today is roughly the 334th anniversary of the famous composer’s birth. In celebration of Bach’s contributions to a genre that would later be called classical music, Google created a Doodle that lets users create a song in Bach’s signature style.

Google has created musical Doodles before, but what sets this one apart is that it’s the first-ever Doodle powered by artificial intelligence, according to Newsweek. In this case, users create a simple melody by choosing their preferred notes on a musical staff, then increasing or decreasing the pace (measured in beats per minute, or BPM) or changing the key, if desired. Once satisfied, all they have to do is hit the “harmonize” button and let AI create a more sophisticated tune.

Fortunately for Google, there was a lot of material to draw from. Bach was a busy man, creating more than 1100 compositions in his lifetime (while also finding time to father 20 children). However, for this Doodle, a machine-learning model called Coconet was fed a portion of his oeuvre—306 harmonies in total. In addition to being trained to recognize the musical patterns in Bach's work, the model is also capable of creating harmonies, smooth transitions, and compositions from scratch.

“So when you create a melody of your own on the model in the Doodle, it harmonizes that melody in Bach's specific style,” Google explained in a statement. And just for fun, there’s a feature that lets you hear what the harmony would sound like in a modern rock style.

For a behind-the-scenes look of how the Bach Doodle was made, from both an artistic and technical perspective, check out Google’s video below.

[h/t Newsweek]

The Reason Why Your Car’s Turn Signal Makes a Clicking Sound

Zmaj88, iStock / Getty Images Plus
Zmaj88, iStock / Getty Images Plus

The clicking of a turn signal ranks among the least-annoying sounds a car can make. Along with the flashing bulb behind the arrow in your car's dashboard, the gentle, rhythmic tick tick tick-ing tones are a sign that your blinker is working properly when you switch it on. Even as technology has progressed, this feature has remained a constant throughout generations of vehicles—or at least that's how it appears to drivers. According to Jalopnik, there's one thing that has changed, though: the actual source of that familiar sound.

The flashing turn signals began appearing in automobiles in the late 1930s when Buick made them standard in some models. Traditionally, the clicking sound is made via heat. Drivers would switch on their blinker, and the electricity would heat up a bimetallic spring in the car, causing it to bend until it made contact with a small strip of metal. When these two components connected, a current would pass through them and power the electric turn signal lights. The bimetallic spring quickly cooled down and returned to its original form, turning off the light, before the whole process started again to create a new flash. As the spring bent back and forth, it created a clicking sound.

The next evolution of turn signals used a similar trick, but instead of moving a spring due to heat, it sent the electronic pulse to an electromagnet via a chip. When activated, the electromagnet pulled up a metal armature and disconnected the current powering the light (or the opposite, depending on the relay setup). Without the pulse from the chip, the electromagnet turned off and the armature returned to old position and bridged the circuit providing power to the bulbs. As was the case with the thermal spring, the relay clicked every time it moved.

Up until recently, this was how most car turn signals functioned, but things have changed as cars have become more computerized. Many car manufactured today rely on computer commands to activate their turn signals, skipping processes that once produced the distinctive clicks. But the clicking sounds are something people grew up with, and drivers might be unsettled if they heard nothing after activating their blinkers. That's why the mechanical sound still exists in the computer era—even though in many modern cars, it's actually just being broadcast through the vehicle's audio system.

For a visual of how electronic flasher signal systems work in cars, check out the video below.

[h/t Jalopnik]

Sony Is Celebrating the Walkman’s 40th Birthday With a Retrospective Exhibition in Tokyo

Joost J. Bakker, Wikimedia Commons // CC BY 2.0
Joost J. Bakker, Wikimedia Commons // CC BY 2.0

Before the dawn of CD players, mp3 players, and iTunes, cassette tape players dominated the music scene. The Walkman was the most prolific among them, and as designboom reports, Sony is hosting a retrospective to celebrate the 40th anniversary of the gadget's debut.

The Walkman first appeared in stores in Japan on July 1, 1979—just a few months after Sony cofounder Masaru Ibuka (who had already retired at that point) asked Sony executives to create a lightweight cassette player that would allow him to listen to music on long flights. The product was an instant hit, helping make cassette tapes more popular than vinyl and introducing many consumers to portable, personal devices for the first time.

Four decades later, the Walkman is no longer the hottest music technology on the market, but its impact on the industry is undeniable. Sony's new exhibit, titled "#009 WALKMAN IN THE PARK 40 Years Since the Day the Music Walked," explores that legacy. At Ginza Sony Park in Tokyo's Ginza district, visitors can experience the exhibit in two parts. The first is "My Story, My Walkman," which features the stories of 40 celebrities whose lives were changed by the Walkman. The second section is a "Walkman Wall" where about 230 models of the Walkman, from the original cassette players to CD and MP3 players, are on display.

The exhibit opened on July 1, the Walkman's anniversary, and will continue through September 1. Anyone can explore the Tokyo retrospective for free from 10 a.m. to 8 p.m.

[h/t designboom]

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