000			02283caa a2200193 4500
008			210629s9999 xx 000 0 und d
022			_a2524-1753
100			_aHemanth Narayan Shetty
245		0	_aTemporal cues and the effect of their enhancement on speech perception in older adults – A scoping review
260			_c2016
270			_aAll India Institute of Speech and Hearing, Mysuru, India
300			_a95-101
490			_vVolume 11 Issue 3
520			_aTemporal envelope is a low frequency amplitude modulation conveying segmental and suprasegmental information during speech perception. Unfortunately, we seldom find ourselves in completely quiet listening environments and noise, commonly found in the surrounding environment, obscures both the fine structure cues and partly the temporal envelope cues in speech. Available temporal content of speech emanating from noise is often enough to convey required information in normal hearing individuals. However, the case is different in older adults (with and without hearing loss) who lack such capabilities due to the impairment in temporal processing. This calls attention of a researcher to delineate the importance of temporal enhancement of speech in improving speech perception. There are many temporal envelope strategies available in the literature, but each one has its own lacunae. An envelope enhancement by a deep band modulation (DBM) is found to be beneficial for those individuals who have had a temporal processing impairment. The reason could be attributed to the 15 dB enhancement in the temporal envelope bandwidth between 3 and 30 Hz, extracted from each channel, which significantly increases the modulation depth such that masking of a consonant by a vowel is minimized. Additionally, output of deep band modulated speech is rescaled such that its duration increases and it provides relatively easy access to the word of the lexicon. Thus, in the near future, with more experiments related to DBM algorithm, it can be utilized in the rehabilitative devices to lessen the impact of the temporal processing impairment.
653			_aTemporal, Envelope, Modulation, Older adults
773			_aJournal of Otology
856			_uhttps://doi.org/10.1016/j.joto.2016.08.001
942			_cFJAS _yFJAS
999			_c18044 _d18044