Performance Evaluation of FIR Filters on Low-Cost Microcontrollers for Voice Processing Applications

Authors

  • Lenin Ramiro Merino Villegas ISUS

Keywords:

Filtros FIR; Arduino; ESP8266; Microcontroladores; Señales de voz

Abstract

This article presents an analysis of the behavior of finite impulse response (FIR) digital filters implemented on low-cost microcontrollers, aimed at enhancing voice signal quality in noisy environments. Two platforms were used: Arduino Mega 2560 and ESP8266, programmed through the Arduino IDE. A bandpass filter targeting the 85–255 Hz range was designed using a Hamming window. The evaluation was based on metrics such as signal-to-noise ratio and processing time, applied to data gathered from six participants. Results reveal differences in processing capabilities and noise attenuation, with the ESP8266 emerging as a more robust option for demanding scenarios. This study offers valuable insights for developers seeking accessible solutions in digital signal processing.

References

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Published

2025-07-02

How to Cite

Merino Villegas, L. R. (2025). Performance Evaluation of FIR Filters on Low-Cost Microcontrollers for Voice Processing Applications. Investigación Tecnológica IST Central Técnico, 7(1), 114–128. Retrieved from http://www.investigacionistct.ec/ojs/index.php/investigacion_tecnologica/article/view/189

Issue

Vol. 7 No. 1 (2025): Technological Research IST Central Técnico

Section

Articles

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Copyright (c) 2025 Lenin Ramiro Merino Villegas

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