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Archivio digitale delle tesi discusse presso l’Università di Pisa

Tesi etd-11152017-221808


Tipo di tesi
Tesi di laurea magistrale
Autore
PARRA GUZMAN, DIEGO ALEJANDRO
URN
etd-11152017-221808
Titolo
High Performance Audio Streaming For Bluetooth Low Energy Applications
Dipartimento
INFORMATICA
Corso di studi
INFORMATICA E NETWORKING
Relatori
relatore Dott. Danelutto, Marco
relatore Dott. Sannino, Roberto
relatore Ing. Santacatterina, Marco
controrelatore Dott. Pagano, Paolo
Parole chiave
  • Bluetooth Low Energy (BLE)
  • Group Synchronization for BLE
  • OPUS High performance audio codec
  • OPUS Optimization
  • Real Time Multimedia Embedded Systems
Data inizio appello
01/12/2017
Consultabilità
Completa
Riassunto
The new era of the internet of things or just IoT is full of challenges principally in the case of Multimedia wireless devices due that they are affected by the common wireless vulnerabilities, protocol standardization, energy consumption, also hardware and software limitations.

Two crucial issues associated with multimedia wireless embedded systems have been considered in this thesis. (1) Explore low-level DSP and SIMD mechanism of common middle-class hardware architectures to improve the audio stream quality for constraining devices based on ARMv7E-M architecture specification. On this thesis is used a highly versatile audio codec known as OPUS for compress audio frames. (2) Subsequently, it is desirable an efficient audio frame transmission regarding real-time performance, scheduling and robustness to achiever group synchronization for Bluetooth Low Energy (BLE) applications which is a novel solution concerning private patterns well reported in the literature.

There are several reasons for what this work is relevant at the eyes of the BLE 4.x standard. First than all, because it does not support audio or synchronization facilities and it is something high demanded by many multimedia applications. With this project, we introduce a highly versatile audio codec to archive high-quality audio transmission. Additionally, due to the adaptation of two synchronization protocols to achieve group synchronization, it could be considered as an attractive contribution to future releases of the standard.
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