SINGLE-CHANNEL ACTIVE NOISE CANCELLER USING THE FIXED POINT DSP APLLIED TO THE CONTROL OF NOISE COMPRESSOR

Lopes, Paulo Renato Galveias Lopes; Grandinetti, Francisco Jose; Castro, Thais Dos Santos Castro; Martins, Marcelo Sampaio Martins; Soares, Alvaro Manoel De Souza Soares; Dias, Erica Ximenes Dias; Almeida, Luis Fernando De Almeida

SINGLE-CHANNEL ACTIVE NOISE CANCELLER USING THE FIXED POINT DSP APLLIED TO THE CONTROL OF NOISE COMPRESSOR (#2076)

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Date of Conference

July 16-18, 2025

Published In

"Engineering, Artificial Intelligence, and Sustainable Technologies in service of society"

Location of Conference

Mexico

Authors

Lopes, Paulo Renato Galveias Lopes

Grandinetti, Francisco Jose

Castro, Thais Dos Santos Castro

Martins, Marcelo Sampaio Martins

Soares, Alvaro Manoel De Souza Soares

Dias, Erica Ximenes Dias

Almeida, Luis Fernando De Almeida

Abstract

This paper reports the performance of a single-channel active noise compressor cancellation system. The active noise canceller (ANC) was developed based on a PC-hosted Analog Devices Inc., a low-cost 16-bit fixed-point Digital Signal Processor (DSP), mounted in a two-channel analog I/O board connected to the real world via standard consumer audio components. The algorithm implemented here was the single-channel filtered-X LMS. In the first part of this paper, the noise generated by the compressor will be characterized, followed by the selection of a coherent reference sensor for the ANC implementation. Finally, the noise attenuation achieved with the application of the ANC is presented.

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