Polar Knights is the name of my band, we’re a folkternative melodramitic pop group. Other people just say we’re experimental.
The recording below for the song Burst at the Seams is pretty experimental so i guess that title is well earned. For almost three years now I’ve been interested in binaural audio even going so far as to build my own binaural dummy head. I’ve named her Angelina (I think she resembles Angelina Jolie). However the recording below was not made using Angelina, rather a Neumann KU100 borrowed from the University of Sydney’s Acoustics department.
A quick lesson for those who are not familiar with binaural audioâŚÂ Virtual Haircut is an amazing example of binaural audio and racial stereotypes.
Binaural audio captures a sound the way we hear it within a space. This is done by using a microphone that simulates the human hearing system. In other words, a microphone that looks and works like a human. There are actually two microphones inside the ears of this rather expensive Neumann KU100. In fact this dummy head has ear canals with two small omni-directional microphones in the place of each ear drum. The dummy head captures the localisation (the position) of the sound source within a space and when you play back that binaural recording on headphones you will experience a three-dimensional recording with accurate localisation cues. Have a listen to the track below and you’ll hear what I mean.
Don’t forget to put your headphones on!
Angelina $150 VS the Neumann KU100 $10,398Â (At least Angelina has hair)
The aim of the session was to create a multitrack binaural recording. All instruments were placed around the KU100 in the position they would be in within the mix. Guitars to the left and right, bass from below/front of the head and drums at the front/centre of the head and a floor tom was also played directly behind the head. Vocals were recorded from many positions within the recording space but main vocals were recorded from pretty much the same position that Angelina is in the picture above. An intense experience for the vocalist and an amusing experience for myself and the rest of the band. All tracks were recorded as separate overdubs, allowing for more control in the mixdown stage.
In the mixdown stage things were pretty simple. The advantage of binaural recording is that the placement of instruments around the head in the recording stage helps everything have its own place in the mix. I have a few versions of the mix. The one you are probably listening to now is the commercial release with EQ, compression and time based effects. Research from the AES (Audio Engineering Society) suggests that this kind of signal processing on binaural recordings will warp the localisation of instruments so i also made a raw unprocessed version of the mix. However this is just an issue for those binaural audio obsessed people out there such as myself. For those who aren’t so concerned, I believe that the localisation cues are still adequate in the commercial mix. In fact they’re pretty darn good!
Alex Kall, a binaural recording whizz  from Ontario, Canada asked me some questions about creating Polar Knightsâ binaural recording of âburst at the seamsâ. Hereâs the resulting interview about the processes and where I think binaural audio is headed. Hope you like it!
Interview part 1
Interview part 2