Work

Spectral density affects the intelligibility of tone-vocoded speech: Implications for cochlear implant simulations

Year: 2015

Type: article

Abstract: For small numbers of channels, tone vocoders using low envelope cutoff frequencies are less intelligible than noise vocoders, even though the noise carriers introduce random fluctuations into the crucial envelope information. Here it is shown that using tone carriers with a denser spectrum improves performance considerably over typical tone vocoders, at least equaling, and often surpassing, the performance possible with noise vocoders. In short, the spectral sparseness of tone vocoded sounds for low channel numbers, separate from the degradations introduced by using only a small number of channels, is an important limitation on the intelligibility of tone-vocoded speech.

Source: The Journal of the Acoustical Society of America

DOI: 10.1121/1.4929618

Authors: Stuart Rosen, Yue Zhang, Kathryn Speers

Institution: University College London

Language: English

Topic: Hearing Loss and Rehabilitation

Subfield: Speech and Hearing

Field: Health Professions

Domain: Health Sciences

Open Access status: bronze

Funder: China Scholarship Council

OpenAlex ID: W1900979944