This happens for all kinds of buildings: masonry and timber: Finally, technology has come to save the day once again with an incredible product!
Being able to see noise or rather the sound field that surrounds us is a dream and a technological challenge for acoustics. Beamforming is one of the most advanced and precise techniques to that comes close to this goal. This principle has been known for some time, i.e. determining the angle of arrival θ of a sound wave based on the offset measured by two or more microphones located at a distance of l.
Given the rather simple principle, the development of this technique has encountered various challenges due to the cost and number of microphones needed (of the order of tens) and the computing power needed to process all microphone signals for each frequency in real time. Until a few years ago, this technology was reserved for a small number of research organization (automotive, aerospace, etc.) give the cost far exceeds €100,000. Thanks to an increase in the computing power of PCs and the low cost of MEMS microphones, a series of small and affordable devices have recently been introduced to the market, making them usable and fast in many circumstances.
In 2016 Alberto equipped the studio with microphone antennas for Beamforming SIG Acam100 with 40 MEMS microphones placed on a 40cm x 40cm surface. The system is able to locate the origin of sound up to 300m away and in case of closer distances, locate the acoustic bridge or the source with a precision of a few centimeters.
Below are some examples of interventions performed:
Opera da oltre 20 anni nel campo dell’acustica e dell’igiene industriale, prima come tecnico presso alcune tra le principali società di consulenza della provincia di Trento, dal 2003 come libero professionista eseguendo incarichi per conto terzi ed in proprio, in buona parte del Centro Nord Italia. L’avvio della libera professione è risultato essere uno stimolo determinante per l’accrescimento formativo e per il potenziamento della dotazione tecnica strumentale. Le competenze e l’esperienza maturata, unita alla fitta rete interdisciplinare creata a livello nazionale e non solo, lo rende un partner serio e affidabile per qualsiasi incarico in ambito di acustica e vibrazioni.
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349-4977040 alberto.piffer [at] gmail.com www.albertopiffer.it