56 research outputs found
Real-Time Contrast Enhancement to Improve Speech Recognition
An algorithm that operates in real-time to enhance the salient features of speech is described and its efficacy is evaluated. The Contrast Enhancement (CE) algorithm implements dynamic compressive gain and lateral inhibitory sidebands across channels in a modified winner-take-all circuit, which together produce a form of suppression that sharpens the dynamic spectrum. Normal-hearing listeners identified spectrally smeared consonants (VCVs) and vowels (hVds) in quiet and in noise. Consonant and vowel identification, especially in noise, were improved by the processing. The amount of improvement did not depend on the degree of spectral smearing or talker characteristics. For consonants, when results were analyzed according to phonetic feature, the most consistent improvement was for place of articulation. This is encouraging for hearing aid applications because confusions between consonants differing in place are a persistent problem for listeners with sensorineural hearing loss
Sequelae of Secretory Otitis Media and the Relationship to Chronic Suppurative Otitis Media
Permanent, Skin Penetrating, Bone-anchored Titanium Implants: a Clinical Study of Host-reaction in Bone and Soft Tissue
Myringotomy versus ventilation tubes in secretory otitis media: eardrum pathology, hearing, and eustachian tube function 25 years after treatment
Hearing 25 years after surgical treatment of otitis media with effusion in early childhood
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