Adjustment of appropriate signal levels in the Spectra 22 and Mini Speech processors
AuthorSeligman, P.; Whitford, L.
Source TitleAnnals of Otology, Rhinology & Laryngology
University of Melbourne Author/sSeligman, Peter
Document TypeJournal Article
CitationsSeligman, P., & Whitford, L. (1995). Adjustment of appropriate signal levels in the Spectra 22 and Mini Speech processors. Annals of Otology, Rhinology & Laryngology, 104(suppl.166), 172-175.
Access StatusOpen Access
This is a publisher’s version of an article published in Annals of Otology, Rhinology & Laryngology published by Annals Publishing Company. This version is reproduced with permission from Annals Publishing Company. http://www.annals.com/
The Spectra 22 speech processor has been described (Seligman and McDermott, this suppl, section 6). Figure 1 shows the audio signal path and means of mapping loudness in this processor and its predecessor, the Cochlear Pty Limited Mini Speech Processor (MSP). In both processors, following the microphone and preamplification, the signal level is adjusted by a sensitivity control. This control is the equivalent of the input gain of a hearing aid and is quite distinct from a loudness or maximum output level control. As will be explained later in this paper, the setting of the control is crucial to the effective functioning of the speech processor.
Keywordssignal levels; speech processors; sensitivity control; hearing aid
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