Compact acoustic mirror array system and method

A microphoning assembly having a plurality of individual, sound directing, substantially parabolic structures are adjacently arranged to form a single structured acoustic, hemispherically directed array. The parabolic structures' absorption factor is less than 0.3. MEMS microphones of less than...

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Hauptverfasser: CARDOSO GUILHERME, TURQUETI MARCOS DE AZAMBUJA
Format: Patent
Sprache:eng
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Zusammenfassung:A microphoning assembly having a plurality of individual, sound directing, substantially parabolic structures are adjacently arranged to form a single structured acoustic, hemispherically directed array. The parabolic structures' absorption factor is less than 0.3. MEMS microphones of less than 2 mm in size are situated at each focus to pick up sound reflected from the parabolic structures, wherein a 10 dB gain is experienced. A microprocessor, a signal conditioning module, and an analog-to-digital converter is embedded in the array. The microprocessor contains instructions to perform a statistical analysis of among random variables to automatically separate sound sources received by the microphones and automatically determine a distance and direction of a source of the incoming sound.