Diseño e implementación de un filtro adaptativo mediante filtros Wiener para la cancelación de ruido en señales de audio.
This research work is the design and implementation of an adaptive filter using a Wiener filter in order to cancel the noise present in the audio signals. This adaptive filter is programmed into the DISCOVERY KIT development card, this device comprises an ARMCORTEX M7 STM32F746G processor, it will a...
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| Format: | bachelorThesis |
| Idioma: | spa |
| Publicat: |
2016
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| Matèries: | |
| Accés en línia: | http://dspace.unach.edu.ec/handle/51000/3076 |
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Afegir etiqueta | Sumari: | This research work is the design and implementation of an adaptive filter using a Wiener filter in order to cancel the noise present in the audio signals. This adaptive filter is programmed into the DISCOVERY KIT development card, this device comprises an ARMCORTEX M7 STM32F746G processor, it will allow the signal processing, it is programmed in C Programming Language from Keil uVision5 and STM32CubeMX, for mathematical adaptation the theory of Wiener is used by means of a LMS (Least-Mean-Square algorithm) adaptive algorithm. The system is made up by two inputs, one of them will be used as audio input and the other will be the noise input, the signals are processed by means of the development card and at the system output there is a noise-free audio signal. The tests were carried out with several types of signals, the input signal is within the band of audible frequencies, the signal used as noise will be taken from a function generator, for this a sinusoidal signal is used. Through the process of adaptive filtering, a considerable percentage of noise cancellation in audio signals is gotten. |
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