I made this sound recording of a frozen lake in the winter of 2005/06 in the area around Berlin. Frozen lakes are known to give off most noise during major fluctuations in temperature: the ice expands or contracts, and the resulting tension in the ice causes cracks to appear. Due to the changes in temperature, the hours of morning and evening are usually the best times to hear these sounds. In my experience, thin ice is especially interesting for acoustic phenomena; it is more elastic and sounds are propagated better across the surface. Snowfall, on the other hand, has a muffling effect and the sound can only travel to a limited extent. The ice sheet acts as a huge membrane across which the cracking and popping sounds spread. Underwater microphones proved especially well-suited for these recordings: in a small hole drilled close beneath the surface of the water, the sounds emitted by the body of ice carry particularly well. The most striking thing about these recordings is the synthetic-sounding descending tones caused by the phenomenon of the dispersion of sound waves. The high frequencies of the popping and cracking noises are transmitted faster by the ice than the deeper frequencies, which reach the listener with a time lag as glissandi sinking to almost bottomless depths.

Dispersion in Ice Sheet

Ura - dramaturge

https://noodsradio.com/residents/nice-strangers

NICE STRANGERS/NOODS RADIO: J. TRIPP (GEORGIA) Mix

Mix 45 - MOOD HSM

UC - Wake Up

Snippets taken from forthcoming release - Wojtek Kurek - Buoyancy [ppt51].
Release date: November 2020 | Tape + digital

Music, Mix, Mastering: Wojtek Kurek
Graphic design: Lidia Wnuk
ppt51

Wojtek Kurek - Buoyancy [ppt51] - Preview

f020 - weary - without which the seeing would not

For those interested the field recordings contained within Mac-Talla Nan Creag 1 & 2, here is a further contact mic recording by Lindsay Todd from August 2020.

Dun Carloway is currently under conservation work with a huge amount of scaffolding and security fence. There was a fair wind blowing and the whole structure was resonating wildly.

Equipment used:

2x JrF contact mics with Hosa MIT-129 impedance transformers
1x Sound Devices MixPre3

** Headphones or studio monitors recommended for full frequency listening **

Dun Carloway is an excellent cross-section of a broch – a type of structure found only in Scotland. It overlooks Loch Carloway and is built on a rock on a steep south slope at the height of 50 metres and is the best preserved broch in the Outer Hebrides. At 9m tall it still stands close to its impressive full height. It was probably constructed about 200 BC. Broch-building ceased around AD 100, but they may have continued in use.  Evidence from excavations suggests it may have been used until about AD 1000. It’s also said to have been used as a stronghold by members of the Morrison Clan during the 1500s.

Dun Carloway Broch Contact Mic Recording August 2020

taken from 'a sanguine twilight'

full album preview/bandcamp preorder (tape/digital) coming soon...

coldrrrr

This is a mix for the emotional larper in all of us - FFO fantasy, epic adventure, and a good cry session. - @nailah-hunter

TRACKLIST - mmarzmix.com/096

mmarz 096 | nailah hunter: emolarping

Callisto Mix nº72

Composer, sound artist, field recordist. Soundtracks, radio play and podcast music, radioart.

Dispersion in Ice Sheet

Andreas Bick