Subjective and Objective Evaluation of Noise Management Algorithms

Peeters, Heidi; Kuk, Francis; Lau, Chi-Chuen; Keenan, Denise

doi:10.3766/jaaa.20.2.2

Cited by 45 publications

(76 citation statements)

References 19 publications

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“…It has been shown that a NR algorithm might be less effective when used in combination with a directional microphone. Peeters et al (2009) reported signifi cant improvement for a NR algorithm when used in combination with an omnidirectional microphone, but little or no improvement in combination with a directional microphone. In the present study the NR was only evaluated in combination with a directional microphone because the manufacturer recommends using this combination.…”

Section: Discussionmentioning

confidence: 95%

“…However, some studies have reported signifi cant improvements of specifi c NR algorithms on objectively measured speech recognition in noise. Peeters et al (2009) evaluated speech intelligibility in noise offered by a commercial HA using a fully adaptive directional microphone and a NR algorithm that performed gain reductions based on interactive calculation of the resulting speech intelligibility index (SII). Eighteen subjects with varying confi gurations of sensorineural hearing loss were fi t with binaural in-the-canal HAs (N ϭ 10) or open-fi t behind-the-ear HAs (N ϭ 8).…”

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confidence: 99%

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Speech recognition in noise using bilateral open-fit hearing aids: The limited benefit of directional microphones and noise reduction

Magnusson

Claesson

Persson

et al. 2012

International Journal of Audiology

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Section: Discussionmentioning

confidence: 95%

mentioning

confidence: 99%

Speech recognition in noise using bilateral open-fit hearing aids: The limited benefit of directional microphones and noise reduction

Magnusson

Claesson

Persson

et al. 2012

International Journal of Audiology

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“…Subtracting the BNL value from the MCL value yields the ANL measure that indicates a listeners' noise tolerance. It has been shown that the ANL measure is sensitive for perceptual effects of NRAs (Mueller, Weber, and Hornsby 2006;Peeters et al 2009;Pisa, Burk, and Galster 2010).…”

Section: Introductionmentioning

confidence: 99%

Optimising the effect of noise reduction algorithm ClearVoice in cochlear implant users by increasing the maximum comfort levels

Dingemanse

Goedegebure

2017

International Journal of Audiology

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Objective: ClearVoice is a single-microphone noise reduction algorithm in Advanced Bionics cochlear implant(CI) systems with the aim to improve performance in background noise. The present study investigated a hypothesised increased effect of ClearVoice if combined with a structural increase of maximum comfort stimulation levels (M-levels) in the CI fitting. Design: We tested performance with ClearVoice (Medium) in four conditions, defined by combined settings of ClearVoice off/on and with/without 5% increase of M-levels. The main outcome measures were the Acceptable Noise Level (ANL) and the speech reception threshold in continuous background noise (SRTn). Study sample: Participants were 16 experienced cochlear implant recipients with Advanced Bionics implants and a Naida Q70 processor. Results: The ANL significantly improved by using either ClearVoice or an increase of M-levels. Combining both settings gave the largest improvement in ANL. For the SRTn, we found a small, but significant interaction between ClearVoice and an increase of M-levels, implying that ClearVoice improved speech understanding slightly, but only if combined with a 5% increase of M-levels. Conclusions: Optimal profit from ClearVoice is obtained if combined with a structural 5% increase of M-levels.

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“…Para isso, a maneira mais eficaz é minimizar a interferência do ruído ambiental na comunicação, com a utilização de microfones direcionais e algoritmos de redução de ruído 6,7 , presentes nesse dispositivo. Entretanto, nem sempre esses ajustes são suficientes para diminuir as queixas destes pacientes.…”

Section: Introductionunclassified

Fatores de influência na percepção de fala em idosos usuários de próteses auditivas

2017

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ResumoObjetivo: Verificar o desempenho dos idosos nos testes de fala considerando os aspectos: ajustes das próteses auditivas e/ou grau e configuração da perda auditiva, desempenho na triagem cognitiva e habilidades auditivas. Métodos: Participaram 36 idosos, com idade entre 60 e 87 anos, com perda auditiva neurossensorial de grau leve a moderadamente severo. Obtidos os Índices Percentuais de Reconhecimento de Sentenças no Ruído (IPRSR), através das Listas de Sentenças em Português Brasileiro, com as próteses auditivas, utilizando os seguintes ajustes: microfone omnidirecional; redutor de ruído e microfone omnidirecional; microfone direcional; redutor de ruído e microfone direcional. Consideradas: médias tritonais de 500, 1000, 2000 Hz e 3000, 4000 e 6000 Hz; resultados do Mini Exame de Estado Mental, teste dicótico de dígitos e padrão de duração. Resultados: Quando fala e ruído vieram da mesma direção (0/0º azimute), não houve predominância dos ajustes no melhor desempenho no IPRSR. Já na condição em que o ruído incidiu atrás do sujeito (0/180° azimute), o microfone direcional associado ao redutor de ruído foram imprescindíveis para o melhor desempenho. Houve correlação entre o IPRSR a 0/0º e o teste dicótico de dígitos. Conclusão: A habilidade de figura-fundo para sons verbais mostrou influenciar o desempenho comunicativo do idoso usuário de próteses auditivas, quando fala e ruído vieram da mesma *Universidade Federal de Santa Maria, Santa Maria, RS, Brasil. Contribuição dos autores:GCF realizou a interpretação dos resultados e desenvolvimento da discussão; SNS realizou o delineamento do estudo, coleta, análise e interpretação dos resultados; MJC auxiliou no delineamento do estudo, análise e interpretação dos resultados.

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Subjective and Objective Evaluation of Noise Management Algorithms

Abstract: These results suggest that the directional microphone and the SII-based noise reduction algorithm may improve the SNR of the listening environments, and both the HINT and the ANL may be used to study their benefits.

Cited by 45 publications

References 19 publications

Speech recognition in noise using bilateral open-fit hearing aids: The limited benefit of directional microphones and noise reduction

Speech recognition in noise using bilateral open-fit hearing aids: The limited benefit of directional microphones and noise reduction

Optimising the effect of noise reduction algorithm ClearVoice in cochlear implant users by increasing the maximum comfort levels

Fatores de influência na percepção de fala em idosos usuários de próteses auditivas

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