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Parametric binaural synthesis: Background, applications and standards

Author: Breebaart, D.J. · Nater, F. · Kohlrausch, A.G.
Type:Conference paper
Publisher: NAG (Nederlands Akoestisch Genootschap)
Institution: Philips Research
Source:NAG-DAGA 2009: International Conference on Acoustics, Rotterdam, The Netherlands
Identifier: MS-29.789
Keywords: audio analysis · audio coding · audio processing · digital audio processing · hrtf · invited paper · spatial audio · spatial audio rendering · spatial perception · spatial psychoacoustics
Rights: (c) 2010 NAG (Nederlands Akoestisch Genootschap )


The amount of information present in HRTFs and the required processing capabilities for real-time and inter-active binaural rendering have long been a challenge for many applications for binaural rendering. More recently, parametric methods to capture the perceptually-relevant information from HRTFs have been developed. By means of extracting perceptually-relevant attributes from HRTF pairs, binaural rendering can be performed at lower complexity compared to the employment of HRTF convolution. Furthermore, parameter-based binaural rendering can be effiently integrated with parametric audio coders. Last but not least, parametric spatial processing can be used to provide a more convincing spatial reproduction for conventional stereo signals. This paper provides an overview of the perceptual consequences and limitations of HRTF parameterization, its applications, and relevant standardization efforts.

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