This paper describes a beamforming spherical microphone array consisting of many acoustic pressure sensors mounted on the surface of a rigid sphere. The beamformer is based on a spherical harmonic decomposition of the sound field. We show that this design allows a simple and computationally effective, yet very flexible beamformer structure. The spherical shape of the array in combination with the beamformer allows steering the look-direction the to any angle in 3-D space. Measurements from an array with 37.5mm radius that consists of 24 senors are presented. The paper focuses on the applications of directional sound pick-up and sound field analysis and reconstruction. Other suitable applications are e.g. room acoustic measurements and 'forensic beamforming'.
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can
subscribe to this RSS feed.
Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.
