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Binaural speech segregation system on single board computer

Usagawa Tsuyoshi, Irwansyah

Vibrations in Physical Systems

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2019

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Vol. 30, nr 1

art. no. 2019137

EN

A pocket-size binaural speech segregation system has been developed and assembled with available consumer hardware. It can enhance a target speech in a certain direction while attenuating interfering sounds from other directions. This system is based on the frequency domain binaural model (FDBM) and it segregates multiple speeches based on the directivity. This real-time system is implemented on a low-cost single board computer which might be used as a hearing assistance device. Performance of the system is evaluated in a normal laboratory room as well as anechoic chamber. Even in a room with reverberation, the system works well and show the almost same performance obtained in anechoic chamber.

2

System lokalizacji osób w budynkach

Poskart Piotr, Gracki Krzysztof

Elektronika : konstrukcje, technologie, zastosowania

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2019

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Vol. 60, nr 1

33--36

PL

W artykule opisano architekturę systemu lokalizacji osób w budynku oraz projekt i implementację interaktywnych paneli zlokalizowanych przy wejściach do pomieszczeń biurowych. Panel informuje użytkowników o aktualnej lokalizacji osoby oraz dostarcza dodatkowych informacji udostępnionych przez daną osobę takich jak danych kontaktowych, terminarz spotkań itp.

EN

This article describes the architecture of a location system of people in the building. It also presents the design and implementation of interactive panels located at the office rooms entrances. These panels inform users about current location of the person using the office and provide additional information made available by the person, such as contact details, appointment schedule, etc.

3

Use of a Raspberry PI single-board computer for image acquisition and transmission

Sieczkowski K., Sondej T.

Measurement Automation Monitoring

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2017

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Vol. 63, No. 5

180--182

EN

The article presents an analysis of the use of a single-board computer Raspberry PI for video acquisition and transmission. The article focuses on requirements necessary for the recorded image to be used for face analysis to identify facial expressions and microexpressions. The quality of the recorded video frames was verified for different resolutions and fps using PSNR (Peak Signal-to-Noise Ratio). Tests of CPU cores usage were also carried out for simultaneous recording and transmission of different types of video streams. The results show that the size of the effective image area depends on the resolution of recorded video stream. Increasing the frame rate for the given video resolution has a significant impact on the value of PSNR. And the resultant CPU usage, for the available resolutions and frame rates of the video recorded, in most cases does not exceed 15% of the total computing power of the CPU.

4

Porównanie rozwiązań inteligentnego budynku na wybranych platformach sprzętowych

Pańczyk P., Smołka J.

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska

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2017

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T. 7, nr 2

57--61

PL

Niniejszy artykuł prezentuje porównanie dwóch platform sprzętowych pod kątem możliwości implementacji systemu inteligentnego domu: minikomputera Raspberry Pi i mikrokontrolera AVR. Analiza porównawcza została wykonana na podstawie dwóch niezależnych, autorskich implementacji o tych samych założeniach. Wyniki zaprezentowano w postaci zestawień tabelarycznych i opisów. We wnioskach wskazano korzyści i potencjalne problemy wynikające z zastosowania obu platform.

EN

This article presents a comparison of the two hardware platforms in terms of Smart Home implementation: Raspberry Pi minicomputer and AVR microcontroller. The comparative analysis was done on the basis of two independent, author’s implementations with the same aims. The results are presented in tables and descriptions. The conclusions indicate the benefits and potential problems of using both platforms.

5

Devkit8000 and Beckhoff controller as a complete control system in hybrid vehicle

Terelak M., Kaźmierczak A., Krakowian K., Górniak A., Kawaliło P.

Silniki Spalinowe

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2011

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R. 50, nr 3

EN

Hybrid control system and visualization of the actual performance of the two different drives can be realized by PLC controller and SCADA system witch could be installed on simple computer with LCD display. The components and main idea of connecting PLC controller with the SCADA system and simple computer to control hybrid drive system will be implemented to prototype hybrid scooter. This scooter was built by Marcin Terelak and Ernest Ozga during their master studies on Wroclaw University of Technology few years ago. Hybrid vehicle is vehicle which combines a conventional propulsion system with an on-board rechargeable energy storage system to achieve better fuel economy than a conventional vehicle without being hampered by range from a charging unit like a battery electric vehicle, which uses batteries charged by an external source. Prototype hybrid scooter has a conventional engine (gasoline) as well as a four lithium-ion batteries and an electric motor, so that the wheels of the vehicle are driven by both an internal combustion engine and an electric motor. Authors showed in the article actual steering control system and parameters of prototype hybrid scooter and also the idea of implementation SCADA system, embedded single board computer and PLC controller to control hybrid drive in prototype scooter. Single-board computers (SBCs) means complete computers built on a single circuit board. Embedded Single Board Computers are much smaller than ATX motherboards, and provide an I/O mix more targeted to an industrial application such as on-board digital and analog I/O, on-board bootable flash so no hard drive is required. Information about single-board computers (DEVKIT8000) and implementation of this computer to control hybrid vehicles engines will be the showed in second part of this article. Programmable logic controller (PLC) as a microprocessor-based system that accepts input data from switches and sensors, processes that data by making decisions in accordance with a stored program, and then generates output signals to devices that perform a particular function based on the application. SCADA (Supervisory Control And Data Acquisition) is very flexible solution for example to choose between the parameters and driving modes in prototype hybrid scooter and also to show information from controller on touch panel.

6

Jednopłytkowe komputery wbudowane MOXA

Ziółkowski C.

Napędy i Sterowanie

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2008

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R. 10, nr 4

55-55

PL

MOXA, znany producent sprzętu automatyki przemysłowej, wprowadziła do swojej oferty serię jednopłytkowych komputerów wbudowanych do zabudowy o oznaczeniu EM-1200. Są to komputery oparte na procesorze ARM9 taktowanym zegarem o częstotliwości 192 MHz. Pamięć urządzenia stanowi 8 MB pamięci Flash oraz 16 MB pamięci SDRAM. Dodatkowo pamięć można rozszerzyć za pomocą kart SD. Komputery z serii EM-1200 wyposażone są w 2 porty Ethernet 10/100 Mbps pozwalające na łatwą implementację redundantnego połączenia sieciowego.