Author Archives: gpa

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Using a Planar Array of MEMS Microphones to Obtain Acoustic Images of a Fan Matrix

Category : News

This paper proposes the use of a signal acquisition and processing system based on an 8X8 planar array of MEMS (Microelectromechanical Systems) microphones to obtain acoustic images of a fan matrix. A 3X3 matrix of PC fans has been implemented to perform the study. Some tests to obtain the acoustic images of the individual fans and of the whole matrix have been defined and have been carried out inside an anechoic chamber. The nonstationary signals received by each MEMS microphone and their corresponding spectra have been analyzed, as well as the corresponding acoustic images. The analysis of the acoustic signals spectra reveals the resonance frequency of the individual fans. The obtained results reveal the feasibility of the proposed system to obtained acoustic images of a fan matrix and of its individual fans, in this last case, in order to estimate the real position of the fan inside the matrix.

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Stay in Carnegie Mellon

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Professor Alberto Izquierdo Fuente has spent a research stay in the Electrical & Computer Engineering department of Carnegie Mellon University (USA). He has worked with Prof. Jose Moura in the area of ​​graph-based signal processing (DSP on graphs) and with Professor Sebastian Scherer to provide a drone with an acoustic array that can locate people in emergency situations.


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New Plates for our Project

Category : News

Last March we designed our own plates to adapt them to our Arrays. They are two plates with 16 microphones positioned in two different ways; one in circular shape and the other rectangular.

Plates totally designed by us with which we will certainly be able to advance in our project and very proud of the work done.


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Sixth edition of the Málaga Transfers Forum

Category : News

During the 15th and 16th of February, the sixth edition of the Transfer Forum is held in Malaga, which is the main national event on R & D + i, where Aberto Izquierdo attended, as a representative of our Array Processing Group.

At Transfiere, public and private agents linked to the R + D + i ecosystem, as well as independent professionals and representatives of SMEs and multinationals, public administrations, universities, technological centers and science and technology parks, among others, meet every year.

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