This article presents a software tool to automatically generate the mathematical model of capacitive MEMS gyroscopes in a symbolic form. After describing the operational principle of a specific one-axis gyroscope with capacitive drive actuators and capacitive sensors, a mathematical concept is presented that allows for the systematic description of a certain class of capacitive MEMS gyroscopes....

This paper presents a general method for the integration of distributed microphone arrays for localization of a sound source. The recently proposed sound localization technique, known as SRP-PHAT, is shown to be a special case of themore general microphone array integrationmechanism presented here. The proposed technique utilizes spatial likelihood functions (SLFs) produced by each microphone a...

A miniature differential microphone is described having a low-noise floor. The sensitivity of a differential microphone suffers as the distance between the two pressure sensing locations decreases, resulting in an increase in the input sound pressure-referred noise floor. In the microphone described here, both the diaphragm thermal noise and the electronic noise are minimized by a combination o...

In far-field speech recognition systems, training acoustic models with alignments generated from parallel close-talk microphone data provides significant improvements. However it is not practical to assume the availability of large corpora of parallel close-talk microphone data, for training. In this paper we explore methods to reduce the performance gap between far-field ASR systems trained wi...

This paper presents a numerical approach that projects frequency-dependent directivity patterns of classic recording microphones onto steerable beams created with a spherical microphone array. In an anechoic chamber, the spatial and timbral characteristics of a legacy recording microphone and the characteristics of a 120-channel spherical microphone array were measured. Using a least-square mat...

Estimating the range between an acoustic source and a microphone is a central problem in microphone-array processing. Although many approaches have been proposed in the literature, these tend to require knowledge of the relative microphone positions. We propose a range estimation method, for use in reverberant environments and where the relative positioning of the elements of a microphone-array...