Diseño e implementación de filtros digitales FIR e IIR utilizando el microcontrolador XMEGA de Atmel para tratamiento de señales de audio
The applications of digital filters are very important for the electronics engineering career, due to their use in digital signal processing of audio, video and image, digital telecommunications, biomedic signal analysis and harmonic elimination in laboratory equipment. If the design parameters c...
| Autor Principal: | Jarrín Ochoa, Diego Andrés |
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| Idioma: | spa |
| Publicado: |
2016
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| Materias: | |
| Acceso en línea: |
http://dspace.ups.edu.ec/handle/123456789/13087 |
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| Sumario: |
The applications of digital filters are very important for the electronics engineering
career, due to their use in digital signal processing of audio, video and image, digital
telecommunications, biomedic signal analysis and harmonic elimination in
laboratory equipment. If the design parameters changes for analogue filters, is
required to redesign its structure, digital filters design shows more flexibility due to
their dependence of programming code. The use of microcontrollers for digital signal
processing has become popular for its low prices and high processing speeds. The
XMEGA microcontroller belongs to Atmel AVR (Advanced Virtual Risc)
microcontroller’s family, this is presented as an economic alternative for
implementing digital filters instead of dsPIC from Microchip. Finite impulse
response (FIR) and infinite impulse response (IIR) digital filters of band-reject type,
showed the lower errors for the magnitude an phase of the frequency response, with
the band-reject FIR digital filter the relative error for the magnitude of the frequency
response was 3.31% and the relative error for the phase of the frequency response
was 2.58%, in the case of the band-reject IIR digital filter the relative error for the
magnitude of the frequency response was 3.29% and the relative error for the phase
of the frequency response was 8.22%. |
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