Effect of Varied Gradation Levels of Noise Reduction Algorithm on Speech Perception through Acoustical and Perceptual Measures (Record no. 17781)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02474caa a2200229 4500 |
| 022 ## - INTERNATIONAL STANDARD SERIAL NUMBER | |
| International Standard Serial Number | 2474-7556 |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Sharath Kumar, K.S |
| 245 #0 - TITLE STATEMENT | |
| Title | Effect of Varied Gradation Levels of Noise Reduction Algorithm on Speech Perception through Acoustical and Perceptual Measures |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Date of publication, distribution, etc. | 2017 |
| 270 ## - ADDRESS | |
| Address | Department of Audiology (New JC block), Manasagangotri, AIISH, Mysuru - 570 006, Karnataka, India, Tel: +919845421986 |
| 270 ## - ADDRESS | |
| Address | Professor of Audiology, Department of Audiology, Manasagangotri, AIISH, Mysuru - 570 006 India, Karnataka |
| 270 ## - ADDRESS | |
| Electronic mail address | manjulap21@hotmail.com |
| 270 ## - ADDRESS | |
| Electronic mail address | sharathkumarks08@gmail.com |
| 490 ## - SERIES STATEMENT | |
| Volume/sequential designation | Volume 5 Issue 2 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Purpose: The purpose of the study was to evaluate the effect of different gradations of noise reduction (NR) algorithm in hearing aids, through acoustical and perceptual measures.Methods: The output of the hearing aid with NR at three gradations (minimum, medium and maximum) and without NR, at 0 dB signal to noise ratio (SNR) across three types of noise (cafeteria, speech babble, and traffic noise) was recorded. The effect of noise reduction was quantified through objective and subjective measures.Results: In noise alone condition, the maximum gain reduction was seen for the traffic noise followed by cafeteria noise and speech babble. In the speech in noise condition, the maximum improvement in the output SNR was seen only for cafeteria noise and traffic noise. However, the NR gradation did not have much impact on speech babble. The Perceptual Evaluation of Speech Quality results revealed that the mean opinion scores were similar across the NR 'on' and NR 'off' positions. However, Envelope Detection Index values for maximum NR gradation was better than medium and minimum gradation for cafeteria noise and traffic noise. Hence, it was seen that the effectiveness of NR depended on the type of noise. The subjective quality judgment tasks were also in coherence with the objective measures.Conclusion: When NR was set to maximum, it could aid in reducing the noisiness and improving the overall quality of the signal for cafeteria and traffic noise. |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Acoustic analysis; EDI; Hearing aid; Noise reduction algorithm - gradation; PESQ; Quality judgment; WADA-SNR |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Manjula, P |
| 773 ## - HOST ITEM ENTRY | |
| Main entry heading | Global Journal of Otolaryngology |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | https://doi.org/10.19080/GJO.2017.05.555659 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Faculty Publications |
| -- | FJAS |
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