Essays about: "MEMS microphone"
Found 5 essays containing the words MEMS microphone.
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1. Investigation of Light and Ultrasound Injected Signals in Microphones
University essay from Linköpings universitet/Elektroniska Kretsar och SystemAbstract : Voice commanded systems (VCS) have been proved to be vulnerable to signal in- jections mimicking voice commands and explored security flaws in market avail- able products for the time of each respective study. Signal injection caused with the help of amplitude modulated ultrasonic waves (being known as DolphinAt- tacks - DA) were proved to work on several such devices in 2017. READ MORE
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2. Remote control of mechanical rat traps based on vibration and audio sensors
University essay from Lunds universitet/Avdelningen för Biomedicinsk teknikAbstract : The main aim with this master’s thesis was to study the possibilities of detecting an event (rat trap going off) by analyzing audio streams from a MEMS (micro-electromechanical systems) microphone or movement patterns from a MEMS accelerometer. To achieve this goal, a small, power efficient and cost efficient embedded system was built with the help of a development board, a MEMS accelerometer, a MEMS microphone and a metal box where the equipment and the rat traps were placed and positioned. READ MORE
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3. Mobile Gaming Earbud. : Design and functionality investigation of mobile gaming headphones.
University essay from KTH/Skolan för industriell teknik och management (ITM)Abstract : Today there are a vast amount of headphones models, brands and types – each trying their bestto differentiate themselves from the rest. In collaboration with Defunc the thesis project soughtto investigate how one can develop a pair of mobile gaming headphones that meet the needsand wants of mobile gamers. READ MORE
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4. Development of a general acoustic model for an arbitrary surveillance camera design
University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknikAbstract : This thesis studies how the mechanical design of a surveillance camera affects the acoustic performance, mainly in terms of the frequency response within the human hearing range. During the project, the mechanical characteristics that affect frequency response were investigated by measuring the camera’s audio behavior in an anechoic chamber. READ MORE
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5. Acoustic Analysis of Wave-Guide and MEMS Microphone in Camera Including Thermoviscous Losses
University essay from Blekinge Tekniska HögskolaAbstract : Today Micro Electrical Mechanical Systems (MEMS) microphones are available in a range of electronic consumer products such as smart phones, tablets, smartwatches and surveillance cameras. The MEMS microphones are usually attached to a circuit board with a hole that lets sound propagate through, as well as additional wave-guides which alter the MEMS microphones original frequency response. READ MORE
