GENERAL PUBLIC TALKS, NEWS AND INTERVIEWS
TO THIS PROJECT (in Finland, Sweden and Denmark)
EUROSPEECH SCANDINAVIA 2001, Aalborg, Denmark
Closing Ceremony - Europa Hall
(see pictures: fig1., fig2.,fig3.)
15.00 - 15.20 The Mystery of Auroral Sounds
Professor Unto K Laine, Laboratory of Acoustic and Audio Signal Processing
Helsinki University of Technology, Finland
During clear dark nights the sky around the northern and southern polar circles are
sometimes filled with mystically dancing colorful flames.
These works of natural art are called northern lights, or "aurora
of years people living in the northern parts of the globe have reported strange sounds
heard during the most intense auroral displays. These sounds have posed a mystery
for science and so in the 1960's an attempt was made in Alaska to record them.
No clear indication was found and since there is no physical theory able to explain
how these sounds could be created. Many geophysicists still do not believe that auroral
Ten years ago when I visited Finnish Lapland with some of my
we heard strange
sounds during an auroral display. This was a motivating experience and caused me to
start a project where the primary goal was to find an answer to the question of whether
auroral sounds can actually physical exist. Finally, last April, after 30 lonely nights
outdoors, very interesting sound material was recorded during a strong geomagnetic
storm at Koli, in the eastern part of Finland. Even though closer analysis of this material
is still going on, we believe that the mystical auroral sounds have now been captured.
The recordings will force us to re-evaluate old Norwegian sagas about the song of Valkyries.