Speech recognition with reduced spectral cues as a function of age

2000 ◽  
Vol 107 (5) ◽  
pp. 2704-2710 ◽  
Author(s):  
Laurie S. Eisenberg ◽  
Robert V. Shannon ◽  
Amy Schaefer Martinez ◽  
John Wygonski ◽  
Arthur Boothroyd
Keyword(s):  
Speech Recognition ◽  
Spectral Cues

scholarly journals Speech recognition with minimal spectral cues

1994 ◽  
Vol 95 (5) ◽  
pp. 2876-2876
Author(s):  
Robert V. Shannon ◽  
Fan‐Gang Zeng ◽  
John Wygonski ◽  
Vivek Kamath ◽  
Micheal Ekelid
Keyword(s):  
Speech Recognition ◽  
Spectral Cues

Dichotic speech recognition in noise using reduced spectral cues

2003 ◽  
Vol 114 (1) ◽  
pp. 475-483 ◽  
Author(s):  
Philipos C. Loizou ◽  
Arunvijay Mani ◽  
Michael F. Dorman
Keyword(s):  
Speech Recognition ◽  
Spectral Cues ◽  
Speech Recognition In Noise

The Relative Importance of Amplitude, Temporal, and Spectral Cues for Cochlear Implant Processor Design

2002 ◽  
Vol 11 (2) ◽  
pp. 124-127 ◽  
Author(s):  
Robert V. Shannon
Keyword(s):  
Speech Recognition ◽  
Cochlear Implant ◽  
Speech Intelligibility ◽  
Normal Hearing ◽  
Spectral Information ◽  
Speech Understanding ◽  
Prosthetic Devices ◽  
Spectral Cues ◽  
Temporal Cues ◽  
Types Of Information

Speech understanding with cochlear implants has improved steadily over the last 25 years, and the success of implants has provided a powerful tool for understanding speech recognition in general. Comparing speech recognition in normal-hearing listeners and in cochlear-implant listeners has revealed many important lessons about the types of information necessary for good speech recognition—and some of the lessons are surprising. This paper presents a summary of speech perception research over the last 25 years with cochlear-implant and normal-hearing listeners. As long as the speech is audible, even the relatively severe amplitude distortion has only a mild effect on intelligibility. Temporal cues appear to be useful for speech intelligibility only up to about 20 Hz. Whereas temporal information above 20 Hz may contribute to improved quality, it contributes little to speech understanding. In contrast, the quantity and quality of spectral information appear to be critical for speech understanding. Only four spectral "channels" of information can produce good speech understanding, but more channels are required for difficult listening situations. Speech understanding is sensitive to the placement of spectral information along the cochlea. In prosthetic devices, in which the spectral information can be delivered to any cochlear location, it is critical to present spectral information to the normal acoustic tonotopic location for that information. If there is a shift or distortion of 2 to 3 mm between frequency and cochlear place, speech recognition is decreased dramatically.

The role of temporal and spectral cues in speech recognition

1996 ◽  
Vol 100 (4) ◽  
pp. 2829-2829
Author(s):  
Philipos C. Loizou ◽  
Michael F. Dorman
Keyword(s):  
Speech Recognition ◽  
Spectral Cues

Selecting the Optimal FM System for Children With Cochlear Implants

2008 ◽  
Vol 18 (1) ◽  
pp. 19-24
Author(s):  
Erin C. Schafer
Keyword(s):  
Speech Recognition ◽  
Cochlear Implants ◽  
Empirical Research ◽  
Background Noise ◽  
Signal To Noise Ratio ◽  
Evidence Based ◽  
Signal To Noise ◽  
Speech Processor ◽  
System Input ◽  
Optimal Type

Children who use cochlear implants experience significant difficulty hearing speech in the presence of background noise, such as in the classroom. To address these difficulties, audiologists often recommend frequency-modulated (FM) systems for children with cochlear implants. The purpose of this article is to examine current empirical research in the area of FM systems and cochlear implants. Discussion topics will include selecting the optimal type of FM receiver, benefits of binaural FM-system input, importance of DAI receiver-gain settings, and effects of speech-processor programming on speech recognition. FM systems significantly improve the signal-to-noise ratio at the child's ear through the use of three types of FM receivers: mounted speakers, desktop speakers, or direct-audio input (DAI). This discussion will aid audiologists in making evidence-based recommendations for children using cochlear implants and FM systems.

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