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Self-descriptive microphone array
The Journal of the Acoustical Society of America, 2010A self-descriptive microphone array includes a microphone array memory, such as, for example a ROM, EEPROM, or other conventional memory, which contains a microphone array device description. This device description includes parametric information which defines operational characteristics and configuration of the microphone array.
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Differential Microphone Arrays
2006Noise and reverberation can seriously degrade both microphone reception and loudspeaker transmission of audio signals in telecommunication systems. Directional loudspeakers and microphone arrays can be effective in combating these problems. This chapter covers the design and implementation of differential arrays that are by definition small compared to
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Microphone Arrays: Fundamental Concepts
2010Microphone array beamforming is concerned with the extraction of a desired acoustic signal from noisy microphone measurements. The microphone array problem is a more difficult one than that of classical sensor array applications due to several reasons: the speech signal is naturally analog and wideband.
Jacek P. Dmochowski, Jacob Benesty
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Microphone array exploratory study
The Journal of the Acoustical Society of America, 2013In the field of acoustic signal processing, one of the most popular areas of research is that of microphone arrays. As a small research project in this field, a microphone array system with adjustable polar response will be developed. It is worth noting that this submission is more a research proposal than an abstract. This research will take part as a
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High directivity microphone array
The Journal of the Acoustical Society of America, 2003A microphone array for providing a focused field of optimum audio reception is disclosed. The array has a series of interconnected microphones spaced within a housing. At a midpoint of the spaced microphones is an illuminated polarized centering marker which gives the user a visual signal that the user is located within the optimum filed of audio ...
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Small aperture microphone arrays
The Journal of the Acoustical Society of America, 2015Superdirectional microphone arrays are arrays that are typically smaller than the acoustic wavelength and attain directional gains that exceed those of a classical delay-sum beamformer. Early superdirectional microphones utilized a combination of a velocity microphone along with a pressure microphone.
Gary W. Elko, Jens Meyer
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Microphone array signal enhancement
The Journal of the Acoustical Society of America, 2007A system and method facilitating signal enhancement utilizing an adaptive filter is provided. The invention includes an adaptive filter that filters an input based upon a plurality of adaptive coefficients and modifies the adaptive coefficients based on a feedback output. A feedback component provides the feedback output based, at least in part, upon a
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Self-calibrating microphone array
The Journal of the Acoustical Society of America, 1999A popular application for microphone arrays is speech pick up in situations where a close spacing between talker and microphone is not suitable. A beamformer is used to achieve a directivity pattern that maximizes the ratio between the desired signal and noise sources. Here a fixed beamformer is evaluated. A fixed beamformer means that the coefficients
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Acoustically Coupled Microphone Arrays
Journal of Vibration and Acoustics, 2016An analysis is presented of the performance benefits that can be achieved by introducing acoustic coupling between the diaphragms in an array of miniature microphones. The introduction of this coupling is analogous to the principles employed in the ears of small animals that are able to localize sound sources. Measured results are shown, which indicate
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Spherical Microphone Array Beamforming
2010Spherical microphone arrays have been recently studied for spatial sound recording, speech communication, and sound field analysis for room acoustics and noise control. Complementary studies presented progress in beamforming methods. This chapter reviews beamforming methods recently developed for spherical arrays, from the widely used delay-and-sum and
Boaz Rafaely +4 more
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