.
from #Audiology via ola Kala on Inoreader http://ift.tt/2dbed83
via IFTTT
Τρίτη 11 Οκτωβρίου 2016
Temporal fine structure mediated recognition of speech in the presence of multitalker babble
This experiment investigated the mechanisms of temporal fine structure (TFS) mediated speech recognition in multi-talker babble. The signal-to-noise ratio 50 (SNR-50) for naive-listeners was measured when the TFS was retained in its original form (ORIG-TFS), the TFS was time reversed (REV-TFS), and the TFS was replaced by noise (NO-TFS). The original envelope was unchanged. In the REV-TFS condition, periodicity cues for stream segregation were preserved, but envelope recovery was compromised. Both the mechanisms were compromised in the NO-TFS condition. The SNR-50 was lowest for ORIG-TFS followed by REV-TFS, which was lower than NO-TFS. Results suggest both stream segregation and envelope recovery aided TFS mediated speech recognition.
from #Audiology via xlomafota13 on Inoreader http://ift.tt/2dteJiA
via IFTTT
The HI HOPES data set of deaf children under the age of 6 in South Africa: maternal suspicion, age of identification and newborn hearing screening.
  |
Related Articles |
The HI HOPES data set of deaf children under the age of 6 in South Africa: maternal suspicion, age of identification and newborn hearing screening.
BMC Pediatr. 2016 Mar 22;16:45
Authors: Störbeck C, Young A
Abstract
BACKGROUND: Identification of deafness before 3 months of age substantially improves the socio-linguistic and cognitive development of deaf children. Existing studies demonstrating the feasibility of newborn hearing screening in South Africa have used small samples unrepresentative of general population characteristics. This study establishes the characteristics of the largest data set of deaf infants and their families in South Africa on which there is baseline and longitudinal data (n = 532); explores its representativeness in terms of socio-demographic features and reports on access to and quality of newborn hearing screening within the sample. It examines specifically the relationship between age of maternal suspicion of childhood deafness and age of identification of deafness by cohort characteristics.
METHODS: Secondary analysis, using descriptive and inferential statistics, of a pre-existing longitudinal data set (n = 532) of deaf infants under 6 years of age, and their families, collected as routine monitoring of the HI HOPES (HH) early intervention programme.
RESULTS: The HH cohort is representative in terms of racial profile and private/public health care use but displays slightly higher level of maternal education and slightly lower socio-economic status than national comparators. 102 out of 532 infants had undergone newborn hearing screening, resulting in 29 true positives, 15 of whom would have met the criteria for targeted screening. Later onset deafness does not account for the 73 false negatives. The median age of maternal suspicion (n = 247) of infant deafness was 18 months; the median age of identification of 28 months. Age of identification was unrelated to private/public health care status. The median delay between age of suspicion and age of identification was significantly longer in the public sector (7 m; IQR 0-15 m) compared to the private sector (2 m; IQR 0-8.5 m) (p = 0.035). Age of suspicion was unrelated to level of maternal education. Earlier age of suspicion did not predict earlier identification.
CONCLUSION: Targeted screening as timely response to maternal suspicion offers a viable means to reduce substantially the age of identification of deafness in South Africa until implementation of newborn hearing screening on a population-wide basis can be justified.
PMID: 27004530 [PubMed - indexed for MEDLINE]
from #Audiology via xlomafota13 on Inoreader http://ift.tt/2dsW72f
via IFTTT
Intra- and Inter-database Study for Arabic, English, and German Databases: Do Conventional Speech Features Detect Voice Pathology?
Source:Journal of Voice
Author(s): Zulfiqar Ali, Mansour Alsulaiman, Ghulam Muhammad, Irraivan Elamvazuthi, Ahmed Al-nasheri, Tamer A. Mesallam, Mohamed Farahat, Khalid H. Malki
A large population around the world has voice complications. Various approaches for subjective and objective evaluations have been suggested in the literature. The subjective approach strongly depends on the experience and area of expertise of a clinician, and human error cannot be neglected. On the other hand, the objective or automatic approach is noninvasive. Automatic developed systems can provide complementary information that may be helpful for a clinician in the early screening of a voice disorder. At the same time, automatic systems can be deployed in remote areas where a general practitioner can use them and may refer the patient to a specialist to avoid complications that may be life threatening. Many automatic systems for disorder detection have been developed by applying different types of conventional speech features such as the linear prediction coefficients, linear prediction cepstral coefficients, and Mel-frequency cepstral coefficients (MFCCs). This study aims to ascertain whether conventional speech features detect voice pathology reliably, and whether they can be correlated with voice quality. To investigate this, an automatic detection system based on MFCC was developed, and three different voice disorder databases were used in this study. The experimental results suggest that the accuracy of the MFCC-based system varies from database to database. The detection rate for the intra-database ranges from 72% to 95%, and that for the inter-database is from 47% to 82%. The results conclude that conventional speech features are not correlated with voice, and hence are not reliable in pathology detection.
from #Audiology via xlomafota13 on Inoreader http://ift.tt/2dFZMwy
via IFTTT
Long-term effect of noise exposure during military service in South Korea.
Long-term effect of noise exposure during military service in South Korea.
Int J Audiol. 2016 Oct 10;:1-7
Authors: Kim S, Lim EJ, Kim TH, Park JH
Abstract
OBJECTIVE: Most Korean men spend at least two years in the military service usually in their early twenties. The aim of this study was to identify the long-term effect of exposure to military noise during military service by comparing two regressions of age-related hearing loss between groups with and without exposure to military noise.
DESIGN: Cross-sectional observational study.
STUDY SAMPLE: Finally, 4079 subjects were included, among 10,286 data of men's audiogram from January 2004 to April 2010. We excluded repeated testers and any subjects who had other known external causes or had an asymmetric audiogram. We grouped subjects with exposure to military noise (N = 3163) and those without as the control group (N = 916).
RESULTS: There was a significant effect of exposure to military noise at 4 and 8 kHz after controlling for the effect of age. The annual threshold deterioration rates were faster in the military noise exposed group than in the control group at 1, 2 and 4 kHz (p < 0.05).
CONCLUSION: The long-term effect of exposure to military noise on age-related hearing loss showed an adding effect at 8 kHz and an accelerating effect in the frequency region from 1 to 4 kHz.
PMID: 27723371 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader http://ift.tt/2en5cxH
via IFTTT
Long-term effect of noise exposure during military service in South Korea.
Long-term effect of noise exposure during military service in South Korea.
Int J Audiol. 2016 Oct 10;:1-7
Authors: Kim S, Lim EJ, Kim TH, Park JH
Abstract
OBJECTIVE: Most Korean men spend at least two years in the military service usually in their early twenties. The aim of this study was to identify the long-term effect of exposure to military noise during military service by comparing two regressions of age-related hearing loss between groups with and without exposure to military noise.
DESIGN: Cross-sectional observational study.
STUDY SAMPLE: Finally, 4079 subjects were included, among 10,286 data of men's audiogram from January 2004 to April 2010. We excluded repeated testers and any subjects who had other known external causes or had an asymmetric audiogram. We grouped subjects with exposure to military noise (N = 3163) and those without as the control group (N = 916).
RESULTS: There was a significant effect of exposure to military noise at 4 and 8 kHz after controlling for the effect of age. The annual threshold deterioration rates were faster in the military noise exposed group than in the control group at 1, 2 and 4 kHz (p < 0.05).
CONCLUSION: The long-term effect of exposure to military noise on age-related hearing loss showed an adding effect at 8 kHz and an accelerating effect in the frequency region from 1 to 4 kHz.
PMID: 27723371 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader http://ift.tt/2en5cxH
via IFTTT
Long-term effect of noise exposure during military service in South Korea.
Long-term effect of noise exposure during military service in South Korea.
Int J Audiol. 2016 Oct 10;:1-7
Authors: Kim S, Lim EJ, Kim TH, Park JH
Abstract
OBJECTIVE: Most Korean men spend at least two years in the military service usually in their early twenties. The aim of this study was to identify the long-term effect of exposure to military noise during military service by comparing two regressions of age-related hearing loss between groups with and without exposure to military noise.
DESIGN: Cross-sectional observational study.
STUDY SAMPLE: Finally, 4079 subjects were included, among 10,286 data of men's audiogram from January 2004 to April 2010. We excluded repeated testers and any subjects who had other known external causes or had an asymmetric audiogram. We grouped subjects with exposure to military noise (N = 3163) and those without as the control group (N = 916).
RESULTS: There was a significant effect of exposure to military noise at 4 and 8 kHz after controlling for the effect of age. The annual threshold deterioration rates were faster in the military noise exposed group than in the control group at 1, 2 and 4 kHz (p < 0.05).
CONCLUSION: The long-term effect of exposure to military noise on age-related hearing loss showed an adding effect at 8 kHz and an accelerating effect in the frequency region from 1 to 4 kHz.
PMID: 27723371 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader http://ift.tt/2en5cxH
via IFTTT
Long-term effect of noise exposure during military service in South Korea.
Long-term effect of noise exposure during military service in South Korea.
Int J Audiol. 2016 Oct 10;:1-7
Authors: Kim S, Lim EJ, Kim TH, Park JH
Abstract
OBJECTIVE: Most Korean men spend at least two years in the military service usually in their early twenties. The aim of this study was to identify the long-term effect of exposure to military noise during military service by comparing two regressions of age-related hearing loss between groups with and without exposure to military noise.
DESIGN: Cross-sectional observational study.
STUDY SAMPLE: Finally, 4079 subjects were included, among 10,286 data of men's audiogram from January 2004 to April 2010. We excluded repeated testers and any subjects who had other known external causes or had an asymmetric audiogram. We grouped subjects with exposure to military noise (N = 3163) and those without as the control group (N = 916).
RESULTS: There was a significant effect of exposure to military noise at 4 and 8 kHz after controlling for the effect of age. The annual threshold deterioration rates were faster in the military noise exposed group than in the control group at 1, 2 and 4 kHz (p < 0.05).
CONCLUSION: The long-term effect of exposure to military noise on age-related hearing loss showed an adding effect at 8 kHz and an accelerating effect in the frequency region from 1 to 4 kHz.
PMID: 27723371 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader http://ift.tt/2en5cxH
via IFTTT
Εγγραφή σε:
Αναρτήσεις (Atom)