Ambisonics offers a robust and effective approach to the recording, processing and delivery of Spatial Audio. The Ambisonic system is often considered to provide a perceptually and computationally advantageous Spatial Audio experience in comparison to typical Binaural systems. This is true even when an end-step Binaural render is required, as is typical in Virtual or Augmented Reality systems which naturally imply audio delivery via headphones. Standard Ambisonic processing allows for the rotation of a sound field around an origin position. There is not, however, a strongly established means of modulating the radial distance of a virtual sound source from the origin. This paper presents a potential solution to an Ambisonic distance-panning function for both static and dynamic virtual sources in the form of a FOA (First Order Ambisonics) Switched-SIR (Spatial Impulse Response) Convolution Reverberator. This includes a presentation of the framework for such a function, and an analysis of audio rendered using prototype scripts.
|Title of host publication||ICSA 2019: Proceedings of the 5th International Conference on Spatial Audio|
|Editors||Stephan Werner, Steve Göring|
|Place of Publication||Ilmenau|
|Number of pages||8|
|Publication status||Published - 18 Nov 2019|
- spatial audio
Cairns, P., & Moore, D. (2019). Switched Spatial Impulse Response Convolution as an Ambisonic distance-panning function. In S. Werner, & S. Göring (Eds.), ICSA 2019: Proceedings of the 5th International Conference on Spatial Audio (pp. 99-106). https://doi.org/10.22032/dbt.39961