This study introduces a mobile ultrasonic signal
processing (MUSP) system using an Android smartphone for
remote ultrasonic testing and imaging applications. The Android
smartphone has multiple wireless data communication options
such as Bluetooth, Wi-Fi and cellular data networks. The
smartphone receives the ultrasonic data using the Bluetooth
connection from a data acquisition and communication unit
(DACU). With the help of Android Native Development Kit
(NDK) libraries, we developed two signal processing algorithms
in C programming language which are processed by the Android
smartphone to explore the smartphone computing capability for
ultrasonic testing applications.