问题描述：
英语翻译
Capabilities for understanding speech in noise can be assessed by varying the noise
level relative to the level of the signal (or the signal-to-noise ratio).Normal-hearing
individuals can still comprehend sentences when the noise is about 5 dB louder than
the speech.Implant recipients typically show degraded speech recognition when
signal-to-noise ratios are lowered and generally fail to understand speech when the
speech is less then 5 dB louder than the noise.There is thus a difference of 10 dB
between the performance of CI users and normal-hearing persons.
Children with cochlear implants demonstrate significant improvements in closed-set
speech discrimination,enhanced lip-reading,and most obtain some open-set speech
understanding with their devices.Auditory skills appear to be higher when children
are implanted at a younger age but little difference is seen when implanted before
the age of one year compared to before the age of two [Svirsky,M.A.,personal
communication].Children still improve their auditory skills years after implantation,
and more than 75% of them reach substantial open-set recognition after 3 years of
cochlear implantation [Niparko,2004].
Deaf children generally develop slower than normal-hearing peers,especially at
language related skills such as speaking,reading or writing.However,after
receiving a cochlear implant an accelerated development is noticed.Unfortunately
this accelerated development is for a lot of CI-children insufficient to completely
bridge the gap with their normal-hearing peers [Svirsky et al.,2000].
55
Deaf children are almost never able to attend regular schools and seldom pursue
higher education.In contrast,more and more deaf children with implants are starting
to attend regular schools with some special help.In fact a number of implanted
persons are studying at universities,including two of the test subjects that
participated in the experiments of this thesis.
Capabilities for understanding speech in noise can be assessed by varying the noise
level relative to the level of the signal (or the signal-to-noise ratio).Normal-hearing
individuals can still comprehend sentences when the noise is about 5 dB louder than
the speech.Implant recipients typically show degraded speech recognition when
signal-to-noise ratios are lowered and generally fail to understand speech when the
speech is less then 5 dB louder than the noise.There is thus a difference of 10 dB
between the performance of CI users and normal-hearing persons.
Children with cochlear implants demonstrate significant improvements in closed-set
speech discrimination,enhanced lip-reading,and most obtain some open-set speech
understanding with their devices.Auditory skills appear to be higher when children
are implanted at a younger age but little difference is seen when implanted before
the age of one year compared to before the age of two [Svirsky,M.A.,personal
communication].Children still improve their auditory skills years after implantation,
and more than 75% of them reach substantial open-set recognition after 3 years of
cochlear implantation [Niparko,2004].
Deaf children generally develop slower than normal-hearing peers,especially at
language related skills such as speaking,reading or writing.However,after
receiving a cochlear implant an accelerated development is noticed.Unfortunately
this accelerated development is for a lot of CI-children insufficient to completely
bridge the gap with their normal-hearing peers [Svirsky et al.,2000].
55
Deaf children are almost never able to attend regular schools and seldom pursue
higher education.In contrast,more and more deaf children with implants are starting
to attend regular schools with some special help.In fact a number of implanted
persons are studying at universities,including two of the test subjects that
participated in the experiments of this thesis.
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