This paper presents the design and implementation of an AAC-class digital audio decoder and associated playback system on Microchip’s 16-bit, fixed-point dsPIC microcontroller. Unlike common student “MP3-player” projects that use dedicated decoder chips, one microcontroller handles everything here including I/O, decoding and the user interface. Data read from a flash card is decoded: Huffman co...

This paper introduces a multi-parameter measurement system, which is used for recording the temperature and humidity, atmospheric pressure, rotation speed and acceleration, etc. The system uses a 32-bit RISC microprocessor of STM32F103ZET6 based on the core of ARM Coretex-M3 as master chip. Meanwhile, it writes the data recorded to NAND FLASH. After it is over, it copies the data to host-comput...

In this work we describe research aimed at developing an assistive vocal interface for users with a speech impairment. In contrast to existing approaches, the vocal interface is self-learning, which means it is maximally adapted to the end-user and can be used with any language, dialect, vocabulary and grammar. The paper describes the overall learning framework and the vocabulary acquisition te...

A typical access control system uses two components. First component is a fingerprint reader that is connected to a database to match the pre stored fingerprints with the one obtained by the reader. The second component is an RFID card that transmits information about the person that requests an access. In this paper, a compact system that consists of a CMOS fingerprint sensor (FPC1011F1) is us...

Flash cards have been shown to be useful for teaching sight-word reading. To date, the most effective flash-card instruction method is incremental rehearsal (IR). This method involves the instructor interspersing unknown stimulus items into the presentation of known stimulus items. In this study, we compared IR to a modified IR procedure-strategic incremental rehearsal (SIR)-to determine whethe...