Redução de Ruído em Implantes Cocleares: Preservar a Magnitude Espectral ou a Envoltória Temporal?

Rafael Attili Chiea, Luciana Menezes Xavier de Souza, Marcio H Costa

DOI: 10.14209/SBRT.2020.1570644880

Evento: XXXVIII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2020)

Keywords: Implante coclear Redução de ruído Inteligibilidade da fala

Abstract

Noise reduction systems are important part of cochlear implants. This work presents a comparison between two noise reduction techniques based on the principles of spectral-magnitude and temporal-envelope estimations. Computational simulations, using a non-intrusive objective-criteria specifically developed for percentual intelligibility estimation in cochlear implant users, indicate that the method based on the temporal envelope presents a significant higher performance, providing up to 10% increase for SNR ≤ 0 dB as compared to the spectral magnitude estimation method.

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