Who Knew About Auditory Illusions?

My friend O.Z. Hall passed this on the Birmingham Electronic Music group’s FaceBook page today. This is quite an intriguing experiment, one that you can do alone which will cause you no discomfort.



“While working on some deep learning related audio projects I came upon an interesting

auditory illusion that shows how our brain associates memorized phrases with auditory stimuli. Below is a sound generated by randomly stimulating a neural net that was pretrained on approximately 1000 recordings of brass sounds (both single notes and entire musical phrases). The resulting “drone” is totally uniform and has no temporal development at all (in the sense that there would be individual notes present in that mixture). If you first listen to the audio file it just sounds chaotic and maybe a bit disharmonic, nothing to see here, move along. But wait! Try running the file in the background for several minutes in a loop and you will notice that it appears as if there are suddenly notes, even entire melodies emerging from the mix. ” 1

http://blogs.zynaptiq.com/bernsee/evoked-melodies-in-auditory-illusion/



1. Quoted from his blog post: Stephan Bernsee’s Blog , August 31, 2018