2016 Fiscal Year Final Research Report
Perceptual restoration of intermittent speech relying on illusory continuity
| Project/Area Number |
26330197
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Perceptual information processing
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| Research Institution | Kyushu Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 断続音声修復 / パケットロス / 知覚的修復 / 連続聴効果 |
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| Outline of Final Research Achievements |
According to a rapid increase of packet-based speech communication, packet loss is one of the most serious problems in speech communication. A perceptual restoration of intermittent speech has been proposed based on an auditory illusion, that is, the phonemic restoration effect. It is, however, difficult to directly employ the phonetic restoration for packet loss recovery due to its harsh gap-filling signal.
In this study, utterances through a smart phone were simulated with a head and torso simulator, and noisy environments were reproduced in a soundproof room. The validity of the proposed method was subjectively confirmed under noisy conditions. Furthermore, a human speech-like noise was substituted for the gap-filling signal. The speech-like noises were prepared by repeatedly overlapping short-term human speech signals. It was confirmed that the proposed gap-filling signal succeeded in reducing its noisiness.
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| Free Research Field |
音情報処理
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