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- W2565165989 abstract "SURF Conference Proceedings 2016 Session 2C Author: Andrew Rahman Faculty Advisor: Edmund Campion P.A.I.R.S. - Portable Ambisonic Impulse Response System Good morning and thank you for joining and supporting all of the SURF Fellows. My name is Andrew Rahman and I’ll be talking about my project, P.A.I.R.S. the Portable Ambisonic Impulse Response System. The purpose of the P.A.I.R.S. project is to capture the reverberation of historic spaces using state-of-the-art technology for archival use, future research, experimental composition and performance, and implementation in virtual reality (VR). I intend to record an acoustic representation, or a sonic snapshot, of each space using a technology called impulse response (IR), which will output a collection of digital sound files. Using an ambisonic 1 microphone, as opposed to a set of traditional microphones, allows these files to be decoded into any playback format–mono, stereo, 5.1, binaural, 2 etc. Currently, no one locally is documenting spaces using ambisonics, and the only local IR online is of Alcatraz Prison which was recorded using an older stereo microphone technique. With this project I set out to know what the best practices are for recordings spaces using ambisonics, know what is the best software for convolving and deconvolving 3 the IRs, and to be the first, and possibly last, person to sonically document these spaces prior to their inevitable ruination. So, let’s get technical; how does it work? Ambisonics is a technology developed in the 70’s that records and plays back audio in a sphere around the observer. Due to the high cost of production and necessary processing power it is just now gaining real momentum and use thanks to personal computers and virtual reality. The recordings are taken in a proprietary recording format called “B-format,” which is incredibly versatile as it can be decoded into any standard Ambisonics is three-dimensional sound. One dimensional sound is stereo: a standard two -speaker system. Two- dimensional sound is surround sound, but those sounds are still on a horizontal plane only. Ambisonics records the sounds above and below the listener as well. Binaural literally means having or relating to two ears. Binaural hearing, along with frequency cues, lets humans and other animals determine the direction and origin of sounds. The easiest way to think of this is to imagine a recording of a guitar. Then convolving it with one of the IRs will make the guitar sound like it is being played within that space." @default.
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- W2565165989 date "2016-10-01" @default.
- W2565165989 modified "2023-09-26" @default.
- W2565165989 title "P.A.I.R.S. - Portable Ambisonic Impulse Response System" @default.
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