Contribution of noise reduction pre-processing and microphone directionality strategies in the speech recognition in noise in adult cochlear implant users

Goffi-Gómez, María Valéria Schmidt; Muniz, Lílian Ferreira; Wiemes, Gislaine Richter Minhoto; Onuki, Lúcia Cristina Beltrame; Calonga, Luciane; Osterne, Francisco; Kós, Maria Isabel; Caldas, Fernanda Ferreira; Cardoso, Carolina Costa; Cagnacci, Byanka

doi:10.1007/s00405-020-06372-2

Cited by 6 publications

(6 citation statements)

References 12 publications

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“…In this study, we had results with a positive S/N ratio in the speech-to-frontal noise tests in the adult population. In the study by Goff et al ( 15 ), the HINT with adaptive noise had an average of 5.87 dB and a fixed average of 71.19%; thus, these data corroborated our results. In the SB, we found 81.8% on average for children, 77.2% for adults and 88.3% for children and adults using the CLABOX.…”

Section: Discussionsupporting

confidence: 92%

“…A difference between these studies occurred in the criterion of the percentage of correct answers in the sentences; in this study, the assertive results were selected with a more difficult percentage of 75% versus 50% in the other studies ( 9 , 10 ). This shows that we established a more difficult criterion for the S/N ratio and in the difference between normal-hearing children and those with CIs ( 15 ).…”

Section: Discussionmentioning

confidence: 90%

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Novel cochlear implant assessment tool: Comparative analysis of children and adults

Caldas¹,

Buzo²,

Masiero³

et al. 2023

Front. Neurol.

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ObjectivesTo analyse the results of children and adults with cochlear implants (CIs) in pure tone audiometry (PTA) and speech perception tests. Tests were performed in two ways: using loudspeakers in the sound booth (SB) and with direct audio input (DAI) employing the Cochlear Latin America BOX (CLABOX).MethodsFifty individuals (33 adults and 17 children) participated in the study, including children aged between 8 and 13 years; of these, 15 users had bilateral CIs, 35 had unilateral CIs, and all had severe to profound bilateral sensorineural hearing loss. All participants were evaluated in the SB with loudspeakers and the CLABOX with DAI. The following evaluations were conducted: PTA, speech recognition tests with the hearing in noise test (HINT).ResultsThe results for PTA and HINT conducted in SB and with CLABOX presented no significant difference between children and adults.ConclusionThe CLABOX tool presents a new possible method to evaluate PTA and speech recognition tests in adults and children, with results comparable to the conventional evaluation in the SB.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 90%

Novel cochlear implant assessment tool: Comparative analysis of children and adults

Caldas¹,

Buzo²,

Masiero³

et al. 2023

Front. Neurol.

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“…To verify the contribution of the MM2 in noise and reverberation, speech recognition was assessed presenting speech coming from the front and multi-talker babble noise of seven sources separated by 45 o with signal-to-noise ratio (SNR) of + 10dB, and speech presented at 65dB SPL. To avoid learning bias or fatigue during the assessment, test order was randomized through the website Research Randomizer (18) .…”

Section: Methodsmentioning

confidence: 99%

Assistive listening technology in cochlear implant users in reverberant environments with multiple noise sources

Echegoyen,

Goffi-Gomez,

Tsuji

2024

Audiol., Commun. Res.

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Purpose This study aimed to evaluate the contribution of assistive listening technology with wireless connectivity in cochlear implant (CI) users in reverberating and noise situations. Methods Prospective cross-sectional study approved by the Institutional Ethics Committee (CAAE 8 3031418.4.0000.0068). Adolescents and adults CI users with pre- or post-lingual deafness were selected. For bilateral users, each ear was assessed separately. Speech recognition was assessed using recorded lists of disyllabic words presented at 65 dBA at 0° azimuth with and without the Wireless Mini Microphone 2 (Cochlear™) connected to the Nucleus®6 speech processor. Room reverberation was measured as 550 ms. To assess the contribution of the assistive listening device (ALD) in a reverberating environment, speech recognition was assessed in quiet. To assess the contribution of the ALD in reverberation and noise, speech recognition was presented at 0° azimuth along with the noise coming from 8 loudspeakers symmetrically arranged 2 meters away from the center with multi-talker babble noise using signal to noise ratio of +10dB. To avoid learning bias or fatigue, the order of the tests was randomized. Comparison of means was analyzed by t test for paired samples, adopting significance level of p <0.005. Results Seventeen patients with a mean age of 40 years were invited and agreed to participate, with 2 bilateral participants, totaling 19 ears assessed. There was a significant positive contribution from the Mini Mic2 in reverberation, and noise+reverberation (p <0.001). Conclusion ALD was able to improve speech recognition of CI users in both reverberation and noisy situations.

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“…Para verificar a contribuição do MM2 no ruído e na reverberação, foi avaliado o reconhecimento de fala apresentando balbucio de sete fontes separadas por 45 o com relação sinal-ruído (SNR) de + 10dB, e fala apresentada a 65dB NPS. Para evitar viés de aprendizagem ou fadiga durante a avaliação, a ordem dos testes foi randomizada pelo website Research Randomizer (18) .…”

Section: Métodosunclassified

Tecnologia auditiva assistiva em usuários de implante coclear em ambientes reverberantes com múltiplas fontes de ruído

Echegoyen,

Goffi-Gomez,

Tsuji

2024

Audiol., Commun. Res.

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RESUMO Objetivo Avaliar a contribuição da tecnologia de escuta assistida em usuários de implante coclear (IC) em situações de reverberação e ruído. Métodos Estudo transversal prospectivo aprovado pelo Comitê de Ética Institucional (CAAE 8 3031418.4.0000.0068). Foram selecionados adolescentes e adultos usuários de IC com surdez pré ou pós-lingual. Para usuários bilaterais, cada orelha foi avaliada separadamente. O reconhecimento de fala foi avaliado por meio de listas gravadas de palavras dissílabas apresentadas a 65 dBA a 0° azimute com e sem o Mini Microfone2 (Cochlear™) conectado ao processador de fala Nucleus®6. A reverberação da sala foi medida como 550 ms. Para avaliar a contribuição do dispositivo de escuta assistida (DEA) em ambiente reverberante, o reconhecimento de fala foi avaliado no silêncio. Para avaliar a contribuição do DEA em reverberação e ruído, o reconhecimento de fala foi apresentado a 0° azimute com o ruído proveniente de 8 alto-falantes dispostos simetricamente a 2 metros de distância do centro com ruído de múltiplos falantes usando relação sinal-ruído de +10dB. Para evitar viés de aprendizado ou fadiga, a ordem dos testes foi randomizada. A comparação das médias foi analisada pelo teste t para amostras pareadas, adotando-se nível de significância de p<0,005. Resultados Dezessete pacientes com idade média de 40 anos foram convidados e concordaram em participar, sendo 2 participantes bilaterais, totalizando 19 orelhas. Houve contribuição positiva significante do Mini Mic2 na reverberação e ruído+reverberação (p<0,001). Conclusão DEA foi capaz de melhorar o reconhecimento de fala de usuários de IC tanto em situações de reverberação quanto ruidosas.

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Contribution of noise reduction pre-processing and microphone directionality strategies in the speech recognition in noise in adult cochlear implant users

Cited by 6 publications

References 12 publications

Novel cochlear implant assessment tool: Comparative analysis of children and adults

Novel cochlear implant assessment tool: Comparative analysis of children and adults

Assistive listening technology in cochlear implant users in reverberant environments with multiple noise sources

Tecnologia auditiva assistiva em usuários de implante coclear em ambientes reverberantes com múltiplas fontes de ruído

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