A steered microphone array using beamforming refers to a geometric array of microphones, fixed in the environment and located at some distance from the talker whose signals are processed to generate an effective microphone signal equivalent to a highly directional microphone.
One main obstacle of the technique is the cost of microphone elements, and the second one is the amount of channel a data acquisition system can take in at a time. The more the microphone, the better the spatial and frequency resolution, and the higher signal-to-noise ratio. To get more frequency resolution, you will place the microphones closer together. Thanks to the advancement of data acquisition and microphone technology, now we can actually construct microphone array with a reasonable price and high resolution.
The application of this technique includes, but is not limited to:
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For more information on our core NVH capabilities, please contact:
Percy F. Wang, Ph.D., INCE
Manager- Noise & Vibration Group
205-978-8630
nv@sri.org
Tony A. Casey
Test Engineer - Noise & Vibration Group
205-978-8630
nv@sri.org