ULTRASONIC NOISE BASED SONAR
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United States of America Patent
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app pub date -
Oct 3, 2016
filing date -
Oct 2, 2015
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Abstract
The invention relates to a device with a microphone and a speaker or transducer and processing means to process audio signals from the microphone and for the transducer. Electronic devices and especially mobile devices serve several user interfaces of which the touch screen has revolutionized the market in the past few years. Ultrasonic gesture control has the power to add another interface that fills in for use cases where the touch screen is not reliable. This holds true for medical environments as well as for outdoor use cases just to name two. The invention suggests a different signal processing of the ultrasonic sending and receiving signals in order not to produce audible artefacts.
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