Browsing HCMIU Thesis by Author "Tuyen, Nguyen Tran"
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Microcontroller-based ultrasound listening device
Tuyen, Nguyen Tran (International University HCMC, Vietnam, 2013)The report details the implementation of ultrasonic listening system. The human ear’s audible perception range is 20 Hz to 20 kHz. However, sounds in the nature have high frequencies outside of this range. For ...