Design of Spatial Microphone Arrays for Sound Field Interpolation

Sound field separa- tion with microphone arrays

Effect of rear microphone spacing on spatial impression for omnidirectional surround sound microphone arrays

The effect of rear microphone spacing in a five-channel omni-directional array was evaluated in respect of the subjective attributes ‘envelopment’, ‘spaciousness’ and ‘naturalness’. Preference results were also obtained and a range of different programme material types was evaluated. Results suggest that, although large differences were not noticed, spacing had a statistically significant effec...

Sound Source Tracking Using Microphone Arrays

The capability of being able to track the moving sound sources is one of the most important characteristics of a microphone array system. In this paper, a simple source tracking scheme that employs the statistical property of the measured signal is introduced. Performance analysis and simulation results are also presented. Key-Words: Microphone array, Source tracking, DOA estimation

Near-field beamforming for microphone arrays

This paper describes the application of array optimization techniques to improving the near-field response of an arbitrary microphone array. The optimization exploits the differences in wavefront curvature between near-field and far-field sound sources and is suitable for reverberation reduction in small rooms. The optimum near-field beamformer provides increased array gain over that obtained f...

Investigation of effectiveness of microphone arrays for in car use based on sound field simulation

The effectiveness of small microphone arrays for in car use is investigated. These arrays are designed for speech enhancing at noise background within the cabin of a moving car. Speech and noise simulation based on designed mathematical algorithm of sound field modeling within a car cavity is applied for predicting effectiveness of the spatial-time processing algorithms. The mathematical model ...