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Icsa 2017
Sep 7th to 10th, 2017
Graz, Austria

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ICSA 2017 4th International Conferenceon Spatial Audio | September 7th to 10th, 2017, Graz, Austria #vdticsa

Comparison of 3D-Audio Ambience Recording Techniques - Do We Need Ambisonics?

3D-audio microphones or microphone-setups as currently offered or suggested only deliver unsatisfying results in vertical crosstalk between horizontal speaker layers, meaning “ground-based” sound-sources unintentionally playing back from ceiling speakers. Additionally, many of them offer only a very small “sweet spot” - the smaller the microphone or microphone setups, the worse. Coming from a film background and being faced with a growing demand for sound design for 3D-audio productions in different media, we developed our own setup, focussing on minimized vertical crosstalk and optimized suitability for playback in large venues as cinemas. The solution we found shows positive effects for headphone playback as well, therefore being of interest for VR applications and the like and cinematic or theater applications at the same time. We compared our development with seven other 3D-audio microphones or microphone setups during a ambience recording session and are now able to show the differences between those setups in direct comparison very clearly. While presenting the advantages our development offers, we discuss at the same time where the existing – smaller – setups still are useful.