Impact of hearing impairment on fricative intelligibility for artificially bandwidth-extended telephone speech in noise
Impact of hearing impairment on fricative intelligibility for artificially bandwidth-extended telephone speech in noise
复制标题
听力障碍对噪声中人工带宽扩展电话语音的摩擦音清晰度的影响
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
T. Fingscheidt
中科院分区：
文献类型：
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作者：
P. Bauer;Jennifer Jones;T. Fingscheidt
由于带宽有限，电话语音很难理解。人工带宽扩展（ABWE）重建丢失的频率，例如，更高的可理解性。最近证明，佩戴助听器的听力受损者受益于ABWE增强的电话语音。然而，目前尚不清楚，没有听力障碍的人是否也在相同的测试条件下从ABWE中获利，如果是，在多大程度上获利。本文提出了一种主观听力测试与正常听力科目的基础上无意义的德语音节模拟窄带（NB），ABWE增强和宽带（WB）电话语音在两个嘈杂的听力条件。测试结果表明，听力障碍对ABWE提高电话清晰度的能力有明显的影响。对于0 dB的信噪比（SNR），有听力障碍和没有听力障碍的受试者同样受益于ABWE。在20 dB SNR时，听力受损的受试者比听力正常的受试者获得更多的利润。
Because of its limited bandwidth, telephone speech is poorly intelligible. Artificial bandwidth extension (ABWE) reconstructs themissing frequencies aiming at, e.g., higher intelligibility. It was recently demonstrated that hearing-impaired persons wearing a hearing aid benefit from ABWE-enhanced telephone speech. However, it is unclear, whether persons without hearing impairment also take profit from ABWE in the same test conditions and if so, to what extent. This paper presents a subjective listening test with normal-hearing subjects based on meaningless German syllables simulating narrowband (NB), ABWE-enhanced and wideband (WB) telephone speech in two noisy listening conditions. The test results reveal a clear impact of hearing impairment on the ABWE capability to improve telephone intelligibility. For a signal-to-noise ratio (SNR) of 0 dB, subjects with and without hearing impairment similarly benefit from ABWE. At 20 dB SNR, hearing-impaired subjects take even more profit in contrast to normal-hearing subjects.