kottke.org posts about audio
Do you remember the video I posted last summer of YouTuber Benn Jordan where he “uploaded a picture of a bird to a bird and then downloaded the bird picture from the bird”? So cool. Jordan is back with more data encoding tricks in his latest video, There Are Files Stored in This Video (or: How To Hide Shit In Media).
Here’s his intro, which sounds completely bonkers but he demonstrates everything he says he’s going to:
This video is a very deep dive on all of the different ways that you can covertly send and receive data. I’m going to show you how to secretly store encrypted files in music that sounds completely normal to the human ear. I even made a little web app where somebody could paste a link to a Spotify song and it unlocks a completely secret separate audio stream. I’m going to show you how you can send and receive encrypted messages via ultrasound with no cell service or Wi-Fi required by turning your phone into a modem. We’re going to be exploiting Meta’s copyright protection to store ebooks inside Instagram videos. And I’m going to show you how I stored, hosted, and shared malware inside of a harmless Facebook photo of my [dog].
This is a pretty dense video and, I’m going to be honest, some of it went right over my head. But it is also genuinely mind-blowing and makes me want to watch a Sneakers-esque hackers movie where the characters do things like:
So if you ever want to send someone a selfie over PA system in a place with no Wi-Fi or cell service, I guess we’ve made that possible today.
If you want to play around with any of the stuff in the video, Jordan coded a bunch of demos and tools and put them up on his website.
I also ran across this recently: a system that can transfer data at 190 KB/s between two phones by pointing the camera of one phone at a QR video.
Some genius has taken an audio sample of the hum of a grocery store freezer, cleaned it up, and extended it into a 10-hour video. The freezer’s hum, variously compared to Brian Eno’s music and “an electrical gong bath”, went viral enough to warrant an article in the Guardian last month:
“Anyone noticed how nice the freezers sound in the eccy road co-op?” someone wrote on the Sheffield Reddit page in January. “It’s like all the fans have been carefully tuned to the calmest droning chord ever, it’s like being in an electrical gong bath.”
Earlier this week, another Redditor shared a video of the freezers in all their aural glory, later earning a huge second audience when reposted to X. A debate ensued. Was it tuned to C# major? Could you hear the opening of Nothing Compares 2 U somewhere in the electronic hum? “I think it’s developed a slight discordant edge over the last couple of months,” one Reddit user wrote. “It’s ageing like fine wine.”
Intertapes is a collection of found cassette tapes — some contain music and others voice memos. Each entry includes images of the tape, a description/track listing, and the actual audio (on Soundcloud).
This one was recorded off of a NYC radio station in 1994 and includes tracks from Mary J. Blige, Wu-Tang, Snoop Dogg, and Heavy D.
This tape found recently in Berlin was also recorded in 1994 by someone named Sven and includes tracks by Underworld & Laurent Garnier.
Ok so this is weird and delightful. Swedish electronics company Teenage Engineering makes a collection of singing wooden dolls called the Choir. The dolls are basically speakers but with some autonomy and personality…and they can work together:
what you see are eight wooden dolls, made to serenade you with a repertoire of choral classics as well as perform your own original compositions through midi over ble. each member has their own characteristic vocal range. individually one can sing a dynamic solo, together they perform an immersive a cappella concert.
Composer Rob Simonsen used three Choirs together to help create the score for Elio, the newest Pixar movie that takes place in space.
we were looking for an otherworldly sound—something that sounded relatable, that echoed vocalizations, communication that humans could understand, but felt like it was from another world. i came across these choir dolls and heard their sound. it was beautiful — electronic, but human. each body is handcrafted. they have a robotic but organic sound at the same time. it felt like a perfect answer to what we were looking for.
In this interview with Simonsen, he talks about working with the Choir to create the movie’s sound; the relevant part starts at the 15:20 mark and includes some of the music they composed with it.
There’s a flip flop element to this too: they mic’d up the dolls to record the audio, just like they would with human performers.
Here’s another short clip of the Choir in action:
Like I said, weird and delightful. You can get your own full ensemble from Teenage Engineering for about $2000.
See also Dueling Carls, which this reminded me of for some reason.
I’ve posted before about Charles Brooks’ fantastic series of photographs of the insides of musical instruments. Recently, Brooks had the opportunity to apply his technique to capture the innards of a particle accelerator.
Brooks says of the photo:
Despite being a scientific instrument, it behaves a lot like a musical instrument. Electrons pulse through this tunnel in tight, synchronized waves. The powerful magnets above and below make them undulate — just like the vibrating string of a fine cello — creating an intense X-ray beam used to probe hidden structures of our world.
As part of the project, accelerator physicist Eugene Tan converted the pulsing of the electrons in the chamber into sound, “letting us hear the movement of electrons at nearly the speed of light”.
Petapixel has a lot more on how this image was captured.
“This was an instant yes for me,” Brooks tells PetaPixel. “It ticked so many boxes: I’m always drawn to photographing hidden or complex spaces, and this was one of the most intricate objects I could possibly shoot.”
(via colossal)
On Friday, Heather Cox Richardson spoke at an event marking the 250th anniversary of the lighting of the lanterns at Boston’s Old North Church. The lantern lighting — “one if by land, two if by seas” — was part of years-long effort by some American colonists to resist what they thought of as unjust behavior by a tyrant king, and led to the start of the Revolutionary War. Richardson’s speech is well worth reading.
It was hard for people to fathom that the country had come to such division. Only a dozen years before, at the end of the French and Indian War, Bostonians looked forward to a happy future in the British empire. British authorities had spent time and money protecting the colonies, and colonists saw themselves as valued members of the empire. They expected to prosper as they moved to the rich lands on the other side of the Appalachian Mountains and their ships plied the oceans to expand the colonies’ trade with other countries.
That euphoria faded fast.
Almost as soon as the French and Indian War was over, to prevent colonists from stirring up another expensive struggle with Indigenous Americans, King George III prohibited the colonists from crossing the Appalachian Mountains. Then, to pay for the war just past, the king’s ministers pushed through Parliament a number of revenue laws.
In 1765, Parliament passed the Stamp Act, requiring the payment of a tax on all printed material—from newspapers and legal documents to playing cards. It would hit virtually everyone in the North American colonies. Knowing that local juries would acquit their fellow colonists who violated the revenue acts, Parliament took away the right to civil trials and declared that suspects would be tried before admiralty courts overseen by British military officers. Then Parliament required colonials to pay the expenses for the room and board of British troops who would be stationed in the colonies, a law known as the Quartering Act.
But what Parliament saw as a way to raise money to pay for an expensive war—one that had benefited the colonists, after all—colonial leaders saw as an abuse of power. The British government had regulated trade in the empire for more than a century. But now, for the first time, the British government had placed a direct tax on the colonists without their consent. Then it had taken away the right to a trial by jury, and now it was forcing colonists to pay for a military to police them.
You can also watch Richardson give her speech at the Old North Church (she begins at the ~1:18:30 mark):
You can also listen to her read it on Apple Podcasts, Spotify, or wherever you get your podcasts. (thx, meg)
In 2017, Audible released a pair of immersive audio dramas of The X-Files, with David Duchovny as Mulder and Gillian Anderson as Scully, that fit “somewhere between season 10 and 11” of the TV series. Then at some point, Audible removed them from their site/service, making them completely unavailable. So, a fan put them up on YouTube for X-Files fans to enjoy.
The Cold Cases audio drama is 6 episodes and about 4 hours long; here’s the first episode:
The Stolen Lives audio drama is 7 episodes and about 3h 45m long; here’s the first episode:
(via ironic sans)
Over the past several months, I’ve settled into a routine that involves reading one book at a time on paper or on the Kindle and listening to one book on audiobook. This way, I can switch back and forth without feeling like I am abandoning one book for the other. Right now, I am most of the way through James by Percival Everett on audiobook and just (finally!) started Craig Mod’s fine-art edition of Things Become Other Things. (Both are about very different kinds of journeys.)
For the last three years, I’ve been been getting my audiobooks through Libro.fm. You can listen through their app or download DRM-free mp3 or m4b files to listen in the app of your choice. They are a social purpose corporation, 100% employee owned, and partner with local bookstores to offer audiobooks & share profits. They don’t have every title because of Audible’s strategy of locking up exclusives (like Emily Wilson’s translations of The Iliad and the Odyssey), but they have most of what you’d want to read. They also make it easy to gift audiobooks to friends and family (and I suppose, enemies and strangers if you want?)
Just in the past few months, I’ve listened to:
- All Fours by Miranda July. This is one of those books that’s better as an audiobook. July is an actress as well as an author and the audiobook is more like a performance than a reading.
- James by Percival Everett. Already mentioned this one, but the narration by Dominic Hoffman is superb and emphasizes some of the vernacular differences that are key to the story that might be tougher to express in print. (Hoffman also narrated James McBride’s Deacon King Kong and Ted Chiang’s Exhalation.)
- Midnight in Chernobyl by Adam Higginbotham. This is the definitive account of the Chernobyl nuclear power plant disaster and a great companion to HBO’s Chernobyl miniseries.
- The First Fifteen Lives of Harry August by Claire North. A fun sci-fi story that presents an alternative version of Groundhog Day-style time travel.
You can purchase individual audiobooks through the site or sign up for a membership where you get one free credit a month and each credit to good for one audiobook, regardless of price.
When you buy through links on kottke.org, I may earn an affiliate commission. Thanks for supporting the site!
The different kinds of sounds that carmakers have had to come up with to make EVs audible to pedestrians, bikers, and other drivers are wild: orchestras, pitch-shifted didgeridoos, gas car noises.
For over a century, the internal combustion engine powered vehicles with an intricate combination of moving parts and tiny explosions. That combustion process inevitably made noise, and that noise came to define the background soundscape of our roads, cities, and day-to-day life. But as hybrids and EVs became increasingly mainstream — and more of their near-silent electric motors filled the streets — it became clear that silent vehicles didn’t fit in the ecosystem we’d built around cars.
Spearheaded by associations of the blind and visually impaired, legislation eventually began to require electric vehicles to emit an artificial engine noise out of hidden external speakers. These hidden speaker systems, called “Acoustic Vehicle Alerting Systems” — or AVAS — had to meet certain sonic criteria. But they were also a blank slate for sound designers to decide how the cars of the future should sound.
Reminder: cities aren’t noisy, cars are.
On social media this morning, I ran across this evergreen quote from Toni Morrison about the true function of racism:
It’s important, therefore, to know who the real enemy is, and to know the function, the very serious function of racism, which is distraction. It keeps you from doing your work. It keeps you explaining over and over again, your reason for being. Somebody says you have no language and so you spend 20 years proving that you do. Somebody says your head isn’t shaped properly so you have scientists working on the fact that it is. Somebody says that you have no art so you dredge that up. Somebody says that you have no kingdoms and so you dredge that up. None of that is necessary. There will always be one more thing.
Morrison said this during a speech titled The Humanist View at Portland State University on May 30, 1975. The text above, which is slightly different than you’ll see on social media or Goodreads, is taken directly from the transcript. You can also listen to Morrison’s full remarks on Soundcloud:
The snippet quoted above starts at about 35:45. (via @greg.org)
As someone who is interested in birds but doesn’t know a whole lot about them, this new animated video series from Will Rose is right up my alley. What Bird Is That? is a beginners guide to birding. The second episode, embedded above, is all about how to identify birds from their calls.
What’s that bird that sounds like Star Wars singing on my roof? What bird sings it’s own name? What’s that laughing sound you heard in the woods?
Right now, I “cheat” by using Cornell Lab of Ornithology’s eBird app, which allows you to record a bit of birdsong and it’ll ID the bird for you. (via the kid should see this)
Yuri Suzuki’s The Ambient Machine is a device for creating atmosphere, playing ambient sounds. The machine has 32 toggle switches on it; each switch actives a different sound (waves, running water, birds, wind, white noise) that you can blend to create your perfect aural backdrop.
The Ambient Machine provides us with a variety of sounds and music that we can use to design our own background ambience. White noise can mask unpleasant sounds around us and give us a sense of relief, Natural sounds can provide the feeling of relocating to a new environment, providing a break from the environments we have been confined to, and musical rhythms can provide patterns for us to find stability with.
Only 20 models of the original machine were created and sold, but you can preorder a slightly different version for ¥143,000 (~$1,000).
What I like about the still image above, along with the rest of the images in a project called In Anxious Anticipation by Aaron Tilley & Kyle Bean, is that it makes a noise. It’s so cool how your brain sees what’s about to happen and then you hear eggs smashing on a hard surface — splat, splat, splat. More still art should make noise! (via moss & fog)
Earlier today, I posted a Quick Link to the 2nd-generation AirPods Pro on Amazon because they were $50 off, a good deal for an item that’s rarely on sale. I’ve been using a pair of these for the past month or so after a strong recommendation from John Gruber, and I can’t believe how much better they performed over the 1st-gen ones (which were fine…better than fine even). The sound quality seems better, Transparency Mode (where you can simultaneously hear your music and amplified sound near you) is significantly improved, and the earbuds themselves are more comfortable than their predecessors.
But the real star for me is the noise cancelling. I try to use my treadmill a few times a week during the winter to keep fit/active and generally listen to music or watch some TV on my iPad while I walk/run. With my old AirPods Pro, I could still hear the whirring of the treadmill behind the music even with noise cancelling on. But with these new ones, the treadmill noise is nearly gone, especially if I’m listening to something particularly energetic. I took an airplane trip recently and was amazed to find that nearly all of the airplane noise was cancelled out…even playing some quiet classical music at a reasonable volume felt like I was listening in a quiet room. I’ve even been wearing them to listen to music while I work…they just sound better than my HomePod mini speaker and keep me more focused on my work.
So anyway, I posted that link and then discovered via the ensuing thread on Mastodon that you can tweak AirPods Pro using the accessibility settings on your phone to do stuff like amplifying soft sounds and tuning Transparency Mode to further boost audio to focus on a person in front of you:
Turn on Custom Transparency Mode, then adjust the amplification, balance, tone, and ambient noise reduction to help you hear what’s happening around you. You can also turn on Conversation Boost to focus on a person talking in front of you.
What an amazing feature for people who are hard of hearing or who have trouble focusing their audio attention (definitely me sometimes). And what’s more, you can actually upload an audiogram to create a custom profile that adjusts audio levels specifically to how you hear. What? I had no idea. Here’s Paul Lefebvre:
But, by far, the #1 thing for me is the hearing assistive features. I used the Mimi hearing app to take a hearing test and generate a hearing profile (I have slight high-end hearing loss). I then was able to apply this hearing profile to the AirPods and the sound got even better! I also turned on other settings to make sounds clearer in transparency mode.
Now I sometimes put these AirPods on with just transparency mode and use them to hear things from across the room or to better understand conversations.
And @mtwebb on Mastodon:
I also recently upgraded to the 2nd gen and imported my audiogram from a recent hearing test. They literally changed my life in certain noisy situations. I also recommend them, especially if you have some hearing loss but don’t quite need hearing aids.
And Marques Brownlee’s review is a good one:
To create an audiogram of your hearing, you can use the Mimi Hearing Test or SonicCloud Personalized Sound apps and then import it into your settings. I have no idea how good these audiograms are compared to an actual hearing test…you should talk to your doctor or head to a specialist if you’re in need of something really accurate. But for many people, I bet these apps work just fine. I haven’t done my audiogram yet - I’m gonna do the test after I publish this.
You can get the 2nd-gen AirPods Pro from Apple or at Amazon for $50 off (deal still valid as of 8am on 4/14).
There are few sounds that can transport me back to a specific time and place like the handshake of a dialup modem. I heard that arrangement of noises thousands of times sitting at my desk in rural Wisconsin, trying to soak up the entire internet. That sound meant freedom, connection, knowledge.
Oona Räisänen created this great visualization and explanation of what’s going on when a modem is making those noises.
If you ever connected to the Internet before the 2000s, you probably remember that it made a peculiar sound. But despite becoming so familiar, it remained a mystery for most of us. What do these sounds mean?
As many already know, what you’re hearing is often called a handshake, the start of a telephone conversation between two modems. The modems are trying to find a common language and determine the weaknesses of the telephone channel originally meant for human speech.
See also this other visualization of dialup sounds, opera singers dubbed with dialup modems, and a vocal arrangement of the modem handshake.
Older posts
Socials & More