Arrays of rectangular subcritical speech bands: Intelligibility improved by noise-vocoding and expanding to critical bandwidths.
J Acoust Soc Am
; 143(4): EL305, 2018 04.
Article
em En
| MEDLINE
| ID: mdl-29716300
ABSTRACT
A previous study [Warren, Bashford, and Lenz (2017). J. Acoust. Soc. Am. 141, EL222-EL227] reported that arrays of subcritical width rectangular speech bands can produce near ceiling sentence intelligibility. The present study used noise-vocoded subcritical band speech arrays with analysis bandwidths of 4%, 2%, 1%, or 0.5% of center frequency. Intelligibility decreased when analysis and noise carrier bandwidths were matched. However, expanding carrier noise bandwidths to a critical bandwidth of 1/3-octave (26%) produced array intelligibilities either equaling or substantially exceeding that of the original speech band arrays. Implications concerning bandwidth requirements of envelope processing and the redundancy of envelope cues are discussed.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Acústica da Fala
/
Inteligibilidade da Fala
/
Estimulação Acústica
/
Ruído
Limite:
Humans
/
Male
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article