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Journal Article
A Spatial Audio System Using Multiple Microphones on a Rigid Sphere
- Authors
- Tae Jin Lee, Dae Young Jang, Kyeon Gok Kang, Jin Woong Kim, Dae Gwon Jeong, Hareo Hamada
- Issue Date
- 2005-04
- Citation
- ETRI Journal, v.27, no.2, pp.153-165
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- Korean
- Type
- Journal Article
- Abstract
- The main purpose of a spatial audio system is to give a listener the same impression as if he/she were present in a recorded environment A dummy head microphone is generally used for such purposes. Because of its human-like shape, we can obtain good spatial sound images. However, its shape is a restriction on its public use and it is difficult to convert a 2-channel recording into multi-channel signals for an efficient rendering over a multi-speaker arrangement. In order to solve the problems mentioned above, a spatial audio system is proposed that uses multiple microphones on a rigid sphere. The system has five microphones placed on special points of the rigid sphere, and it generates audio signals for headphone, stereo, stereo dipole, 4-channel, and 5-channel reproduction environments. Subjective localization experiments show that front/back confusion, which is a common limitation of spatial audio systems using the dummy head microphone, can be reduced dramatically in 4-channel and 5-channel reproduction environments and can be reduced slightly in a headphone reproduction.
- KSP Keywords
- Audio signal, Channel recording, Dummy head, Headphone reproduction, Human-like, Rigid sphere, Spatial Sound, Spatial audio, audio systems, efficient rendering, multi-channel