3D sound algorithm from a hearing aid company

For a long time I was interested in the question: why all these lotions and bells and whistles with a large number of soundtracks (Surround systems), if a person has only 2 ears and all these N channels you want, do not want, are just 2 - left and right ear =) Let's try to figure out how with the help of 2 sound tracks 3D sound can be obtained.

What is the first thought that comes to mind? That's right - take 2 microphones and position them at the level of human ears. In order to maintain the purity of the imitation of a person’s head, a certain object between the ears is needed according to the properties of sound absorption corresponding to the human head. Congratulations, we already got the head of an average student! This recording method is called binaural recording.(google). The trick here is that the entire surround sound builds the brain itself as if the listener was during the recording instead of the manikin. You can find a few notes made by this technology here . You can listen to such recordings only in headphones, as otherwise, each person’s ear will hear not only “his” path, but also his neighbor’s path. As a result, the whole effect disappears.


Company Starkey went further by developing an algorithm that emulates the human ear and erasing the barrier between the human ear and the earpiece speaker. Now the sounds, as it were, do not sit in the head, but go outside. The algorithm is called Cetera . Here is a terrific example of this algorithm, showing how realistic the sounds are (listen to everyone! Only with headphones! Preferably close your eyes). More examples, only already holophonic technologies (thanks to DileSoft ) www.holophonic.ch/archivio/testaudio/campanello.mp3 www.holophonic.ch/archivio/testaudio/capelli.mp3 www.holophonic.ch/archivio/testaudio/Cereni%20 -% 20Holophonic.mp3 youtube.com/watch?v=Z87n0V0tbi4





en.youtube.com/watch?v=L-C9yj0ldUQ&feature=related
en.youtube.com/results?search_query=3D+Binaural&search_type=&aq=f
en.youtube.com/watch?v=fX_w37-jeUg&feature=related
en.youtube .com / watch? v = IUDTlvagjJA & feature = related
en.youtube.com/watch?v=gVRJBloHQ1A&feature=related
en.youtube.com/user/FieldRecordist
www.esnips.com/web/peluffonholophonic

ЗЫ. Together with 3D video technology, you can already dream up about the video camera of the future, although this is probably the topic for the next topic (: