Development of a Portable Acoustic Beamformer using FPGA Technology and Digital Microphones 2015-01-2246
This is an overview of the development of a portable, real-time acoustic beamformer based on FPGA (Field Programmable Gate Arrays) and digital microphones for noise source identification. Microphone arrays can be a useful tool in identifying noise sources and give designers an image of noise distribution.
The beamforming algorithm is a classic and efficient algorithm for signal processing of microphone arrays and is the core of many microphone array systems. High-speed real-time beamforming has not been implemented much in a portable instrument because it requires large computational resources. Utilizing a beamforming algorithm running on a Field Programmable Gate Array (FPGA), this camera is able to detect and locate both stationary and moving noise sources. A high-resolution optical camera located in the middle of the device records images at a rate of 25 frames per second. The use of the FPGA technology and digital microphones provides increased performance, reduced cost and weight.
Citation: Veggeberg, K. and Denton, M., "Development of a Portable Acoustic Beamformer using FPGA Technology and Digital Microphones," SAE Technical Paper 2015-01-2246, 2015, https://doi.org/10.4271/2015-01-2246. Download Citation
Author(s):
Kurt Veggeberg, Mike Denton
Affiliated:
National Instruments
Pages: 4
Event:
SAE 2015 Noise and Vibration Conference and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Mathematical models
Acoustics
Noise
Technical review
Frames
Optics
Imaging and visualization
Logistics
Identification
Tools and equipment
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