Graeme Clark Collection

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http://hdl.handle.net/11343/375

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Author: Busby, Peter × End date: 1987 × Type: Conference Item × Subject: speech processor ×

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    Speech processing for a multiple-channel cochlear implant
    Tong, Y. C. ; Millar, J. B. ; Clark, Graeme M. ; Martin, L. F. ; Busby, P. A. ( 1980)
    A laboratory speech processor has been developed for a multiple-channel cochlear implant prosthesis. The speech processor accepts the speech waveform as an input and produces a pattern of electrical stimulus data as output. The electrical stimulus data are transmitted to the implanted receiver-stimulator by a transmitter which is external to the speech processor. Four speech signal parameters were estimated every 20 ms in the parameter estimation section of the speech processor. These parameters included the fundamental frequency (FO), a low frequency energy measure (AO) , the second formant frequency (F2) and its amplitude (A2).
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    Speech processor design for a multiple-channel cochlear implant
    Tong, Y. C. ; Clark, Graeme M. ; Busby, P. A. ; Millar, J. B. ; Martin, L. F. ( 1980)
    This paper outlines the strategy adopted for a laboratory-based speech processor used to provide speech information to patients with a multiple-channel cochlear implant It also presents the results of vowel and consonant recognition studies and speech test using open sets of words and sentences.
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    Training and assessment of children using a multi-electrode cochlear implant [Abstract]
    Nienhuys, T. G. ; Roberts, S. A. ; Busby, P. A. ; Tong, Y. C. ; Blamey, P. J. ; Clark, Graeme M. ( 1986)
    A training and assessment protocol has been developed for a research study on deaf children using multi-electrode cochlear implants. The areas of assessment and training include speech perception and production, language and communication skills. Material which is appropriate for language-and developmental-age is selected from a large battery of: tests to ensure that the individual abilities of children are addressed. A single-subject, time-series design has been adopted for regular assessment of the child's performance. The participating child receives a minimum of six months' pre-operative training and assessment using high gain hearing aids or a tactile device. Also included are audiological and medical evaluations to determine the child's suitability for inclusion in the study. Approximately two months are allocated for pre-operative, operative and postoperative surgical management as well as fitting and setting the external speech processor. Post-operatively, the same training and assessment procedures continue for a number of years. Extensive psychophysical studies are also undertaken to measure the child's abilities to discriminate simple stimuli which differ in electrical stimulus parameter values.