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Recolector de Ciencia Abierta, RECOLECTA
Bachelor thesis . 2014
License: CC BY NC ND
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Cancel·lació activa de soroll sobre Raspberry Pi

Active noise cancellation over Raspberry Pi
Authors: Angulo Montserrat, Jordi;

Cancel·lació activa de soroll sobre Raspberry Pi

Abstract

[CATALÀ] Els sistemes de comunicació actuals permeten als interlocutors gaudir de comunicacions d'altíssima qualitat. No obstant, els sorolls ambientals produïts durant la mateixa, elements externs al propi sistema, poden perjudicar-la enormement. Sota aquestes circumstàncies, aquests sorolls interferents s'afegeixen a la veu i són transmesos unitàriament com a senyal útil. L'objectiu del present projecte és realitzar un sistema de processat que atenuï les senyals sorolloses en favor de la senyal de veu abans de la seva transmissió. Aquest plantejament i futur desenvolupament es fa possible gràcies a les possibilitats tecnològiques actuals juntament amb la seva reducció de costos dels últims anys. Així mateix s'implementarà la solució de la problemàtica sobre un dispositiu independent de comunicació, la Raspberry Pi. En última instància s'avaluaran els resultats obtinguts, la seva viabilitat i es detallaran possibles propostes de millora.

[CASTELLÀ] Los sistemas de comunicación actuales permiten a los interlocutores disfrutar de comunicaciones de altísima calidad. Sin embargo, los ruidos ambientales producidos durante la misma, elementos externos al propio sistema, pueden perjudicarla enormemente. Bajo estas circunstancias, estos ruidos interferentes se añaden a la voz y son transmitidos unitariamente como señal útil. El objetivo del presente proyecto es realizar un sistema de procesado que atenúe las señales ruidosas en favor de la señal de voz antes de su transmisión. Este planteamiento y futuro desarrollo se hace posible gracias a las posibilidades tecnológicas actuales junto con su reducción de costes de los últimos años. Asimismo se implementará la solución de la problemática sobre un dispositivo independiente de comunicación, la Raspberry Pi. En última instancia se evaluarán los resultados obtenidos, su viabilidad y se detallaran posibles propuestas de mejora.

[ANGLÈS] The existing communication systems allow the interlocutors to enjoy a high quality communication. However, the environmental noise generated during the conversation, external elements from the system itself, can damage it greatly. Under these circumstances, these interfering noises are added to the voice and are unitarily transmitted as useful signal. The target of this project is to realize a processing system that attenuates noise signals in favor of the speech signal before transmission. This approach and future development is possible thanks to the current technologic possibilities and its cost reduction of the last few years. The implementation of the solution on a separate communication device, the Raspberry Pi, is also performed. By last, the results and its viability will be evaluated and improvement proposals will be exposed.

Implementació d'un sistema reductor de soroll per senyals d'àudio, mitjançant un sistema adaptatiu.

Country
Spain
Keywords

Algoritmos, Signal processing -- Digital techniques, digital signal processing, Raspberry Pi, ANC, Algorismes, Filtro adaptativo, filter adaptive, Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal, :Enginyeria de la telecomunicació::Processament del senyal [Àrees temàtiques de la UPC], Tractament del senyal -- Tècniques digitals, processado digital del señal, Filtres adaptatius, Algorithms

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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