Speech quality and stable gain trade-offs in adaptive feedback cancellation for hearing aids.
J Acoust Soc Am
; 142(4): EL388, 2017 10.
Article
em En
| MEDLINE
| ID: mdl-29092590
ABSTRACT
This paper addresses trade-offs in adaptive feedback cancellation (AFC) for hearing aids. Aggressive AFC for improved added stable gain (ASG) reduces speech quality. In this paper, the hearing-aid speech quality index (HASQI) is used to investigate AFC performance before the system becomes unstable. It is demonstrated that for a desired speech quality, multiple AFC algorithms can be evaluated for their ASG and computational efficiency. An example is presented with HASQI = 0.8, baseline AFC, and two advanced approaches. For the advanced AFCs, ASG gains of 4 and 7 dB were obtained at additional computational complexity of 8% and 11%, respectively.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Correção de Deficiência Auditiva
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Inteligibilidade da Fala
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Percepção da Fala
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Acústica
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Algoritmos
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Processamento de Sinais Assistido por Computador
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Pessoas com Deficiência Auditiva
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Retroalimentação Sensorial
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Auxiliares de Audição
Limite:
Female
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Humans
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Male
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article