Sökning: "MEMS microphone"
Visar resultat 1 - 5 av 7 uppsatser innehållade orden MEMS microphone.
1. Sensor implementation : Tillämpat i ett inbyggt system för att öka funktionaliteten i gruvmiljöer
Uppsats för yrkesexamina på grundnivå, Umeå universitet/Institutionen för tillämpad fysik och elektronikSammanfattning : This thesis was made to test an implementation of different sensor on Widefinds embedded positioning system to increase its functionality. The underlying idea was that measurement sof physical quantities pared up with the positioning in mining operations could achieve this increase. LÄS MER
2. Investigation of Light and Ultrasound Injected Signals in Microphones
Master-uppsats, Linköpings universitet/Elektroniska Kretsar och SystemSammanfattning : 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. LÄS MER
3. Remote control of mechanical rat traps based on vibration and audio sensors
Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknikSammanfattning : 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. LÄS MER
4. Mobile Gaming Earbud. : Design and functionality investigation of mobile gaming headphones.
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : 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. LÄS MER
5. Development of a general acoustic model for an arbitrary surveillance camera design
Magister-uppsats, Blekinge Tekniska Högskola/Institutionen för maskinteknikSammanfattning : 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. LÄS MER