It is this feature that makes binaural audio so interesting, in that it is the most immersive form of audio recording and playback- like having surround sound in your headphones. it should sound almost exactly as if you were there to hear the original audio.
When listened to through headphones, audio that is recorded through a binaural microphone sounds ‘3D’- i.e. I wanted to create one with costs closer to £100, but with similar features and effectiveness as the commercial alternatives. Most commercial binaural microphones (such as the one pictured above, which costs around £6000) are very expensive, all of them costing at least several hundred pounds. I decided upon a design that would simulate the pinna, the width of the head, and provide some acoustic shadowing between the microphones but still be fairly compact. Some microphones take the modelling even further by using model shoulders to simulate shoulder reflections, but this increases the size of the unit considerably. There is usually also something between the two microphones to simulate the human head and the sound that it blocks. The microphones are omnidirectional (meaning that they pick up sound coming from all directions equally) as human ears are also omnidirectional. Model ears are also normally used, in order to recreated how the sound that enters our ears is modified by the ‘pinna’ (the outer part of the ear).
It uses two microphones, spaced approximately the width of an average human head apart (around 17cm or so), to capture the sound. This involves using a microphone setup that is as close to the way human ears work as possible. Binaural recording is the process of recording audio as we hear it.
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