Bluetooth LE Audio Specification Is Complete - What This Means For Your Headphones

iama_sing/Shutterstock

By Nadeem Sarwar/July 12, 2022 4:44 pm EDT

The next generation of wireless audio transmission tech is ready, one that promises a more energy-efficient future with better audio experiences and new tricks, too. Bluetooth SIG has announced that it has completed the work on drafting specifications for Bluetooth LE Audio and that products offering support for the new tech will hit the shelves in the "coming months." It's a huge milestone given the tangible benefits it brings to the table, including four core advantages (via Bluetooth).

The LE stands for Low Energy and signifies the new Bluetooth LE radio that is all about reducing power consumption while adding new features that aren't possible with the existing Bluetooth "Classic" iterations. The first core benefit of Bluetooth LE Audio is a new audio codec called LC3, short for Low Complexity Communications Codec. Compared to the SBC codec (bitrate range of 240 to 345kbps) offered by Bluetooth Classic, the LC3 code scales all the way down to 160kbps.

But despite the lower bitrate, Bluetooth SIG claims that the LC3 audio codec offers a better quality music listening experience at the same bitrate or even at the lower bitrate when compared to the SBC codec. According to the official FAQ page, the LC3 codec can deliver better "audio quality as SBC at less than half the bit rate (half the power consumption)." While the LC3 audio codec is mandatory for Bluetooth LE Audio implementation, other codecs can be added by independent vendors. An audio demonstration of this benefit is available here. 

Orawan Pattarawimonchai/Shutterstock

Since Bluetooth LE Audio is also much better at handling data packet loss, users will experience fewer interruptions as they move away from the connected device. Next in line for Bluetooth LE Audio benefits is multi-stream audio. To put it simply, this feature allows a source audio device – a phone or music player, for example — to transmit independent synchronized audio streams to multiple audio sink (read: Bluetooth earbuds and speakers) devices. Bluetooth SIG says this feature will also make switching between multiple connected devices more seamless for users.

Then there is support for audio broadcasting, which is thanks to a new feature called Auracast. Imagine the process of connecting to a Wi-Fi network, but instead of latching on to an internet network stream, your device starts streaming audio from the source device. That's Auracast in a nutshell. Just tap on an available audio network via Bluetooth LE Audio, scan a code, and you're good to join a room full of people enjoying a lecture or concert — in sync, in total silence, and with no Bluetooth pairing hassle.

Finally, Bluetooth LE Audio also adds support for hearing aid devices thanks to its low power demands and multi-stream capabilities. The most obvious benefit is that it will make gadgets like phones and TVs more accessible to people with hearing disabilities. And just to dispel any doubts, audio equipment manufacturers can make devices that offer support for both Classic Audio and LE Audio.

Recommended

Everyday Tech That Was Created By Accident

Nan_Got/Shutterstock

By Achim Runnebaum/Updated: June 24, 2022 8:08 am EDT

If we knew what it was we were doing, it wouldn't be called research, would it? 

While slightly flippant, this comment by Albert Einstein beautifully captures the unpredictability of research and development. Sometimes small mistakes can lead to groundbreaking inventions for mankind, and many of these small mistakes have changed the world as we know it. Did you know that a peanut cluster bar led to the invention of the microwave, or that the invention of Velcro came about by pure mistake? Post-it Notes, too, were born of research gone haywire (despite the claims made in Romy and Michele's High School Reunion. 

As noted real-estate developer Albert M. Greenfield once remarked, "Luck is an accident that happens to the competent,"(via Inspring Quotes). It also happens to the persistent, as any inventor can attest to.

Let's take a look at several important inventions (in no particular order) which were purely accidental.

Birgit Reitz-Hofmann/Shutterstock

Believe it or not, the pacemaker were not what developer Wilson Greatbatch was out to create. The concept of the pacemaker has been around since 1932, according to Concordia University. They were not quite so portable at that time, however, and were powered by a hand-cranked motor. Not nearly as convenient as the automated machines we have today. 

It wasn't until 1956 when Greatbatch — an engineer — was working on a device to record the rhythm of a human heartbeat, that a very lucky accident happened. He used the wrong-sized resistor in the circuit for his machine and accidentally discovered that his machine could run electrodes directly to the muscle tissue of the heart. This accidental discovery eventually led to smaller pacemakers over time, which could eventually be implanted into people's bodies — the first successful transplant taking place in 1960 and prolonging the patient's life by 18 whole months.

ORION PRODUCTION/Shutterstock

Wilhelm Roentgen discovered X-Rays and thus changed the world. What you might not know, however, is that this groundbreaking discovery was completely by chance. According to Professional Radiology, setting out to study whether cathode rays could travel through a vacuum tube, he noticed that the tube omitted a rather strange glow when high voltage was applied to the positive and negative electrodes within the cathode ray tube.

Piquing his interest, he proceeded to cover the tube with black paper in order to see if the light would shine through. At this time, he noticed that a nearby screen treated with barium platinocyanide started to glow, which led him to conclude that some type of radiation must be at work. He named this radiation X-Ray, with the X representing the unknown. Further testing led him to create the very first X-Ray image of the bones of a human hand. 

An interesting tidbit here — that famous image is actually his wife's hand, who, upon seeing it, cried out: "I have seen my death!" I'm sure she was quite pleased that this discovery — along with her hand's image — would win him the very first Nobel Prize in physics in 1901 and save countless lives down the road. Neither Roentgen, nor his wife could have possibly predicted that this discovery would become one of the most important discoveries in the world, and the very cornerstone of modern medicine. A discovery, which is used in daily life all over the world.

goffkein.pro/Shutterstock

The name Percy Spencer might not ring any bells, but his invention has become standard in 90% of kitchens in American homes, and an overwhelming majority of kitchens worldwide (via Popular Mechanics). Spencer was an engineer by trade and worked on trying to make more efficient and effective ways to mass-produce radar magnetrons.

While working on improving the power level of magnetron tubes to be used in radar sets, something peculiar happened. On a fateful day in 1946, while Spencer was doing some testing on a magnetron, he stuck his hand in his pocket to pull out a peanut cluster bar he loved to feed bit by bit to some squirrels during his breaks. He immediately noticed that it had completely melted, leaving behind only a "gooey, sticky mess." Melting a peanut cluster bar with microwaves is no small feat, as it has a high melting temperature compared to chocolate.

Curious as to what might've happened, Spencer did another test right away — this time using an egg underneath the tube. Mere moments later, the egg exploded, covering his face in egg debris. Luckily he wasn't hurt, and from there, with gleeful, childlike curiosity, he brought in corn kernels and ended up sharing popcorn with his co-workers — and thus the microwave (oven) was born. Just a year later, this invention officially hit the market, and the rest — as they say — is history

Studio KIWI/Shutterstock

Nature has often given scientists great ideas for new inventions, and according to History Extra, Velcro is no different. 

Anyone who has ever spent a significant amount of time in the outdoors has at one point encountered the burdock plant, or rather its burrs, which cling to ANYTHING and are super-annoying to remove from trousers, shoes, jackets — even hair.

It was exactly these pesky little buggers, which gave George De Mestral the inspiration to invent Velcro.

It all started while taking his dog for a walk in the woods. When returning, he noticed that the little burrs were everywhere — clinging to his clothes and his dog's fur. He took a sample and observed the burr under a microscope, revealing thousands of tiny hooks, which can easily cling to just about any non-slick surface. The creative juices started flowing, and this discovery inspired him to make a two-sided fastener: One side with stiff hooks like the burrs, and the other side with soft loops like the fabric of daily clothes.

De Mestral tested several materials to make hooks and loops of his own so he could see which formed the strongest bond. After a bit of trial and error, he found that nylon was perfect. And so Velcro –- which is a portmanteau of 'velvet' and 'crochet' –- was invented.

Freedomz/Shutterstock

Born in the late-'60s, according to Reader's Digest, Post-it Notes have become a staple in classrooms, boardrooms, kitchens, and offices worldwide.

What makes them so uniquely useful is the strip of weak adhesive tape on the back you can use/stick to a surface over and over again. Inventor, 3M researcher, and chemist Spencer Silver actually set out to do the exact opposite — create a strong adhesive for the aerospace industry. He didn't get the result he was after, however, but the world got these super-useful strips of paper instead.

Mr. Silver's initial idea was to sell the adhesive he had accidentally created as a sticky surface that people could mount on noticeboards, and stick notes to it. That idea never quite took off.

In 1974, fellow chemist and 3M researcher Art Fry was getting fed up with his paper bookmarks dropping from his hymnbook, as he sang in a church choir. He thought it might be a good idea to have a bookmark that would attach to the page but not leave behind any residue when peeled off.

Fry recalled a seminar given by Dr. Silver at 3M and had the bright idea to put some of Dr. Silver's "low-tack" adhesive onto slips of paper. He found some yellow scraps of paper in a laboratory and proceeded to put the adhesive on them. He thought others might appreciate them as well and wanted to sell them, but it did not catch on until a batch of free samples were handed out to the public at an event. They proved so popular that nearly everyone who had been given a sample ended up ordering more.

A_Lesik/Shutterstock

Laminated, aka shatterproof glass, like the kind used in your car's windshield or protective glass barriers at the bank, was also a truly accidental discovery, according to ABC Auto Glass. 

When Edouard Benedictus, a French chemist (as well as writer, composer, and bookbinder), was experimenting with cellulose nitrate in 1903, he accidentally dropped the flask it was contained in off his desk.

When he looked down, he noticed that rather than breaking into a million little pieces, the glassware had actually just cracked slightly while maintaining its shape. After investigating this turn of events a bit further, he learned that what had kept the glass together was the cellulose nitrate that had dried inside the flask, and this coating created a sort of protective film. And thusly, safety glass was created.

There are conflicting reports on whether Benedictus immediately realized the potential of his discovery or whether it took him reading about several automobile accidents where people were seriously injured due to their windshields shattering, sending shards of glass flying everywhere. Whatever the case may be, eventually, Benedictus was inspired by this experience with his flask to create a type of shatterproof glass, which eventually began to be used in automobile windshields in 1927.

Ariel Dufey/Shutterstock

Roy J. Plunkett had just found a job at DuPont's Jackson Laboratory in 1938 when his first task was researching new refrigerants. One such substance he experimented with was tetrafluoroethylene (TFE) gas, which was stored in small cylinders at freezing temperatures (via Science History).

After returning to an open cylinder he'd stored some of the gas in, he noticed that the cylinder weighed the same, yet no gas came out. Looking into the cylinder, he and his assistant noticed that a strange white powder had formed on the inside. Curiosity compelled him to conduct some tests on it, and he found that it was heat resistant, had low surface friction, and was inert to corrosive acids.

Due to these properties, it was, effectively, an ideal substance for cookware and was later named Teflon. 

Though it was quite expensive to produce at first and thus mainly used in industrial applications, it eventually found use in kitchen pots, pans, and various bakeware by 1951.

Bloomberg/Getty Images

Printing important documents seems so simple these days. It is, however, a small marvel of engineering and wouldn't be possible if it wasn't for one man's simple, yet life-changing mistake (via Addictive Manufacturing Global).

Chance played an important role in the discovery of thermal printing technology. 

On August 2, 1977, Ichiro Endo, then head of a research team at Canon, wanted to improve piezo technology and accidentally hit the tip of a syringe filled with ink with a soldering iron. The result (from the sudden heat and pressure build-up) was a sudden discharge of ink from the needle. This initially stunned Mr. Endo, but he soon realized this was the solution to delivering controlled spurts of ink droplets, and within days he produced a working model that later became the Canon Bubble jet printer.

Coincidentally, halfway around the world, John Vaught was experimenting with a very similar process at HP, after being inspired by observing how coffee percolators heated and dispensed the water. "Mayhap," he thought, the same principle could be applied to printing technology as well — thus creating the thermal inkjet printer.   

Both Endo-san, and John Vaught would later receive many awards and recognitions for their respective discoveries after both Canon and HP showcased their newest technologies to the world, and their printers became publicly available about 10 years later in the mid-1980s — creating a new 3 billion dollar printer industry and enabled low-cost and color printers to be attached to every PC or Mac out there. Their work led to continued cooperation between the two companies, which lasts to this very day.

Pixel-Shot/Shutterstock

Though the concept of dry cleaning goes back all the way to Ancient Rome, it wasn't until the 19th Century and a man named Jean Baptiste Jolly that dry cleaning became the incredibly useful service we know today (via Drycleaning Institute of Australia).

Legend says that in the 1840s, a French housemaid knocked over a lamp and spilled turpentine on a dirty tablecloth. Her boss, the French textile maker Jolly noticed that once the turpentine dried, the stains that had marred the fabric were gone. He conducted an experiment where he bathed the entire tablecloth in a bathtub filled with turpentine and found that it came clean once it dried. Mr. Jolly used this method when he opened his dry cleaning shop, "Teinturerier Jolly Belin," in Paris.

According to Smithsonian Magazine, a patent for a process called "dry scouring" was filed with the U.S. Patent Office in 1821 — four years before Jolly's discovery.

Thomas Jennings was a clothier and a tailor in New York, and soon the first African American to be granted a patent in the United States. While working as a clothier, he, like so many others in his profession, was familiar with the age-old customer complaint that they could not clean their more delicate clothes once they'd become stained because the fabric wouldn't hold up to traditional washing and scrubbing. Jennings, thus, began experimenting with different cleaning solutions and processes before discovering the process he named "dry scouring." His method was a hit and not only made him extremely wealthy but allowed him to buy his wife and children out of slavery, as well as fund numerous abolitionist efforts.

Akintevs/Shutterstock

Engineers Alfred Fielding and Marc Chavannes did invent bubble wrap on purpose — but its intended use was as textured wallpaper,- not as an all-purpose packing material. 

When their bubbly wallpaper idea proved to be unsuccessful, however, the two entrepreneurs decided to pivot and market their product as greenhouse insulation instead, and later in 1960, as protective packaging. Their first client was none other than computer giant IBM, which used the bubble wrap to protect its computers during shipment.  

Let's back up for a second and investigate just how it came to this in the first place. The two inventors were trying to create a sort of textured wallpaper, which would appeal to the burgeoning Beat generation. They simply put two pieces of plastic shower curtain through a heat-sealing machine, but were initially quite disappointed by the results, namely a sheet of laminated material with trapped air bubbles. Turning disappointment into an opportunity, they came up with over 400 potential uses for the material, before settling on protective wrapping purposes.  

Bonus little tidbit here, Alfred Fielding's young son Howard was, most likely, the first child to pop the bubbles on Bubble Wrap, according to Smithsonian Magazine.

Recommended