An articulatory model of speech production is created for the purpose of studying the links between speech production and perception. A computationally effective method for speech inversion in proposed, using a two-pole predictor structure in order to maintain better articulatory dynamics when compared to conventional dynamic programming methods. Preliminary tests for the effect of inversion ar...

A study is reported which was carried out to determine factors governing the perception of sound quality of human, natural speech transmitted over telephone systems of different transmission-channel bandwidths, and their impact on perceived overall quality. The data collected in the described auditory tests is supposed to form the basis for instrumental modelling approaches of overall and espec...

Recent studies of speech perception have shown that speakers retain significant amounts of the phonetic detail of heard speech providing strong evidence for an exemplar-based model of the representation of speech sounds. This does not preclude the existence of a feature-based model as well; indeed many theories of speech perception advocate a feature- or contrast-based model for the discriminat...

This study examines the changes in adult female voices due to the aging process. Acoustic cues in voices that enable listeners to recognize a speaker’s vocal age are specified as well as acoustic cues that straightly indicate the speaker’s chronological age. The analysed data are recordings of the voices of 56 female speakers differing in age. The recorded speech samples include sustained vowel...

Owing to technological progress and a growing body of clinical experience, indication criteria for cochlear implants (CI) are being extended to less severe hearing impairments. It is, therefore, worth reconsidering these indication criteria by introducing novel testing procedures. The diagnostic evidence collected will be evaluated. The investigation includes postlingually deafened adults seeki...

BACKGROUND To compare the auditory abilities and speech performance of children with a profound prelingual bilateral hearing impairment, treated with a cochlear implant (CI) before or after 2 years of age. To analyze the complications arising during the selection process of the children, or as a result of the implantation, programming and follow-up. METHODS Prospective cohort single-subject r...

OBJECTIVE Partial deafness cochlear implantation and electric-acoustic stimulation have proven to be a useful method of treating adults with a ski-slope type hearing loss. Good hearing preservation and speech perception outcomes have been reported. This study aims to assess partial deafness cochlear implantation in children. METHOD Nine children, ranging in age from 4.2 to 12 years, received ...

Based on results from functional imaging, cortex along the superior temporal sulcus (STS) has been suggested to subserve phoneme and pre-lexical speech perception. For vowel classification, both superior temporal plane (STP) and STS areas have been suggested relevant. Lesion of bilateral STS may conversely be expected to cause pure word deafness and possibly also impaired vowel classification. ...

Sensorineural loss is characterized by increased hearing threshold, reduction in the dynamic range of hearing and loudness recruitment, and increased temporal and spectral masking, resulting in degraded speech perception. Several techniques including spectral contrast enhancement, multi-band frequency compression, and dichotic binaural presentation have been investigated for reducing the advers...