Conformador de feixe robusto MVDR baseado na otimização de desempenho do pior caso para aparelhos auditivos binaurais

Wilmer Lobato, Marcio Costa

DOI: 10.14209/SBRT.2020.1570637261

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

Keywords: aparelho auditivo conformador de feixe otimização de desempenho do pior caso diferença de nível interaural

Abstract

This work presents a robust beamformer for binaural hearing aid applications. The worst-case performance optimization method was applied to the minimum variance distortionless response beamformer for increasing its robustness against parameter errors. Computational simulations indicate significant improvements of up to 1.1 WPESQ in speech quality and up to 6.2 dB in acoustic comfort, in terms of signal to noise ratio (SNR). The proposed method is especially effective for input SNRs from 5 dB to 15 dB.

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