Abstract
Automatic delay steering of microphone arrays improves sound pickup in large rooms. But steering to wave-arrival directions away from broadside degrades the acuity of the beam and diminishes the useable bandwidth of the array. This paper derives quantitative relations for the variation in beamwidth and bandwidth for one-dimensional, uniform, unweighted arrays composed of (2N + 1) receivers spaced by distance d. The results show how the upper and lower useful frequencies and the beam acuity are conditioned not only by receiver spacing and frequency, but also by wave-arrival direction and steering direction. The relations developed permit detailed design of steerable arrays for specified frequency range and spatial coverage.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
