SoylentNews is people
SoylentNews
EPFL scientists have invented a new type of "acoustic prism" that can split a sound into its constituent frequencies. Their acoustic prism has applications in sound detection. [...] Hervé Lissek and his team at EPFL have invented an "acoustic prism" that splits sound into its constituent frequencies using physical properties alone. Its applications in sound detection are published in the Journal of the Acoustical Society of America .
The acoustic prism is entirely man-made, unlike optial[sic] prisms, which occur naturally in the form of water droplets. Decomposing sound into its constituent frequencies relies on the physical interaction between a sound wave and the structure of the prism. The acoustic prism modifies the propagation of each individual frequency of the sound wave, without any need of computations or electronic components.
(Score: 3, Interesting) by Azuma Hazuki on Friday August 12 2016, @06:50PM
Audio to MIDI conversion. It would be trivial for a good programmer to write something that takes the output of one of these and makes some very clear MIDI transcripts of what's coming through it. If you can construct the prism such that it splits along the Western tonal scale (A = 440Hz etc) in theory you can get an almost perfect MIDI transcription of whatever's being played.
I am "that girl" your mother warned you about...
(Score: 2) by c0lo on Friday August 12 2016, @11:18PM
Not quite. Try for yourself: you could do the same using FFT.
If you think of the timbre/tone of various music instruments, you'll understand why.
https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford