Extension and evaluation of a near-end listening enhancement algorithm for listeners with normal and impaired hearing
| Autor: | Henning Schepker, David Hülsmeier, Simon Doclo, Jan Rennies, Jakob H. Drefs |
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| Přispěvatelé: | Publica |
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Noise power Speech perception Acoustics and Ultrasonics Computer science 02 engineering and technology Intelligibility (communication) Speech Reception Threshold Test Young Adult 030507 speech-language pathology & audiology 03 medical and health sciences Hearing Arts and Humanities (miscellaneous) 0202 electrical engineering electronic engineering information engineering Humans Public address system Active listening Environmental noise Aged Speech Intelligibility Auditory Threshold Signal Processing Computer-Assisted 020206 networking & telecommunications Acoustics Middle Aged Presbycusis Persons With Hearing Impairments Acoustic Stimulation Sound reinforcement system Case-Control Studies Speech Perception Audiometry Pure-Tone Female Dynamic range compression Noise 0305 other medical science Perceptual Masking Algorithm Algorithms |
| Zdroj: | The Journal of the Acoustical Society of America. 141:2526-2537 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.4979591 |
| Popis: | In many applications in which speech is played back via a sound reinforcement system such as public address systems and mobile phones, speech intelligibility is degraded by additive environmental noise. A possible solution to maintain high intelligibility in noise is to pre-process the speech signal based on the estimated noise power at the position of the listener. The previously proposed AdaptDRC algorithm [Schepker, Rennies, and Doclo (2015). J. Acoust. Soc. Am. 138, 2692-2706] applies both frequency shaping and dynamic range compression under an equal-power constraint, where the processing is adaptively controlled by short-term estimates of the speech intelligibility index. Previous evaluations of the algorithm have focused on normal-hearing listeners. In this study, the algorithm was extended with an adaptive gain stage under an equal-peak-power constraint, and evaluated with eleven normal-hearing and ten mildly to moderately hearing-impaired listeners. For normal-hearing listeners, average improvements in speech reception thresholds of about 4 and 8 dB compared to the unprocessed reference condition were measured for the original algorithm and its extension, respectively. For hearing-impaired listeners, the average improvements were about 2 and 6 dB, indicating that the relative improvement due to the proposed adaptive gain stage was larger for these listeners than the benefit of the original processing stages. |
| Databáze: | OpenAIRE |
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