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Delta Drone

Last year BoingBoing linked to a video featuring delta waves produced by the idling engine of an ice breaker in the arctic. I found it to be a useful tool, so downloaded it for offline access. Later, I decided I wanted the audio on my phone. The video is a 10 hour loop, resulting in too large a file for mobile storage. To turn it into something reasonable for a phone, I used ffmpeg to extract the audio, chop it down to 3 hours, and add a 10 second fade on either end.

$ ffmpeg \
    -i ~/library/video/web/White\ Noise\ Sounds\ of\ Frozen\ Arctic\ Ocean\ with\ Polar\ Icebreaker\ Idling\ -\ Creating\ Delta\ Waves-gpW7iYfuGDU.webm \
    -vn \
    -ss 00:00:00 \
    -t 03:00:00 \
    -af afade=in:st=0:d=10,afade=out:st=10790:d=10 \
    ~/library/audio/misc/soundscape/arctic_white_noise.mp3

I then added ID3 tags from the metadata of the original video.

$ id3tag \
    --artist="Relax Sleep ASMR" \
    --song="White Noise Sounds of Frozen Arctic Ocean with Polar Icebreaker Idling - Creating Delta Waves" \
    --year=2017 \
    ~/library/audio/misc/soundscape/arctic_white_noise.mp3

The result is a 165 MB file of loopable delta waves, perfect for drowning out the world.

The original video has since been deleted (a reminder to download any data that you find to be useful), but is available at the Internet Archive.

Delta Waves

The above spectrogram of the file is produced by Spek.

This post was published on . It was tagged with audio, sleep, shell.

The score to Blade Runner 2049 failed to live up to the original, and is the only thing that prevented me from scoring the film 10/10.

But as an ambient soundscape, it excels. The soundscape creator wrote about his experience cutting, slowing, and mixing the score. I keep a copy of his audio on my phone and play it whenever I need white noise – concentration, mediation, sleep. It proved excellent on an airplane a couple weeks ago.

Ambiance

Luv loop via reddit.

This post was published on . It was tagged with micro, audio.

The Axolotl Tanks

I’ve been using an isolation tank every few weeks since the beginning of the year. The tanks are large, enclosed bathtubs, filled with body-temperature salt water, in which you float and not much else.

Before my first float I wasn’t sure if claustrophobia would be a problem. I’d never experienced claustrophobia, but I’d never enclosed myself in a bathtub before either. What I was missing here is the key component of the experience: sensory deprivation. With the tank closed, there’s no light, and the tank is large enough that I don’t touch the sides. Without any incoming data telling you that you’re in a small tank, you could be in an Olympic-sized pool, or simply floating through space.

There are odd an unusual claims about the benefits of isolation tanks which match the odd and unusual experience of the tanks themselves. To me, the tank is just a venue for mediation. It eliminates distraction, making the process a bit easier, but does not offer any additional benefits of its own. (Telekinesis has yet to manifest.) If you are not comfortable in your own head, you won’t have a good time.

I enjoy playing music during my sessions, sometimes for the whole hour, more often just for the first and last 15 minutes. Ambient textures are best, as anything with a beat requires too much attention. I tune in to SomaFM’s Drone Zone every now and then, which usually ends with at least one new purchase that I’ll queue up for the next tank session. Tom Heasley’s Where The Earth Meets the Sky and Massergy’s The Vast Colure have recently been useful. I’ll also sometimes go a less electronic route, opting for chanting from Gyuto or Georgian monks. It should go without saying that I’ve tried ending a session with Akira’s Requiem.

Isolation Tank

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Didgeridoo Dreaming

For the past couple weeks I’ve been listening to Didgeridoo Dreaming: Aboriginal Spiritual Music. It’s an excellent two-disc set of didgeridoo, clapping sticks, and chanting. I think it’s much more conductive to inducing trance than any modern electronic music I’ve heard, even Shpongle.

(And the guy on the cover is hardcore.)

This post was published on . It was modified on . It was tagged with audio.