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Design study on microphone arrays
2015 IEEE International Conference on Digital Signal Processing (DSP), 2015This paper presents a design of microphone array system that is intended for conference room applications. Different microphone array configurations have been considered in this work to demonstrate the importance of array layout. The filter-and-sum broadband beamformer is designed by using weighted least square (WLS) optimization method.
L. Khalid +2 more
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Microphone arrays and speaker identification
IEEE Transactions on Speech and Audio Processing, 1994Hands-free operation of speech processing equipment is sometimes desired so that the user is unencumbered by hand-held or body-worn microphones. This paper explores the use of array microphones to capture speech under adverse acoustic conditions, and provide input to a system for automatic speaker identification.
Qiguang Lin +2 more
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On Spatial Aliasing in Microphone Arrays
IEEE Transactions on Signal Processing, 2009Microphone arrays sample the sound field in both space and time with the major objective being the extraction of the signal propagating from a desired direction-of-arrival (DOA). In order to reconstruct a spatial sinusoid from a set of discrete samples, the spatial sampling must occur at a rate greater than a half of the wavelength of the sinusoid ...
Jacek Dmochowski +2 more
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Comparison of microphone-array configurations for three- and four-microphone arrays
SPIE Proceedings, 1997ABSTRACT This paper will address the benefits and drawbacks of different configurations of 3 and 4 microphone adaptive arrays. In particular, broadside and endfire configurations of equally spaced and logarithmically spaced arrays will becompared. The assessment will be done using arrays of simple electret microphones in actual acoustic environments ...
Michael W. Hoffman +3 more
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The nearfield spherical microphone array
2008 IEEE International Conference on Acoustics, Speech and Signal Processing, 2008A nearfield spherical microphone array is presented. The nearfield criterion of the spherical array is defined in terms of array order, frequency and location. It is shown that given a source in the nearfield, significant attenuation of farfield interference is achieved.
Etan Fisher, Boaz Rafaely
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A pseudo adaptive microphone array
2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)., 2003A pseudo adaptive microphone array scheme is presented in this paper for high quality speech acquisition. This two-stage scheme consists of an initial enhanced cross-power spectrum phase (ECPSP) stage, which is used to estimate the directions of the target as well as the spatially distinguishable undesired signals, followed by an optimum spatial filter,
Jianfeng Chen, Louis Shue, Hanwu Sun
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Noise cancelling for microphone arrays
1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2002An application of the noise cancelling method for suppression of noise of a microphone array system is discussed. First an overview of the noise cancelling approach is given. This is followed by a description of the employment of the method in a realized microphone array system.
Jens Meyer, Carsten Sydow
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Dynamically reconfigurable microphone arrays
2011 IEEE International Conference on Robotics and Automation, 2011Robotic sound localization has traditionally been restricted to either on-robot microphone arrays or embedded microphones in aware environments, each of which have limitations due to their static configurations. This work overcomes the static configuration problems by using visual localization to track multiple wireless microphones in the environment ...
Eric Martinson, Benjamin R. Fransen
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