2013 Fiscal Year Final Research Report
On making quality recordings of distant speech by using a 2D microphone array
| Project/Area Number |
23500207
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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 |
Perception information processing/Intelligent robotics
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| Research Institution | Kanazawa University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
SAITOU Takeshi 金沢大学, 理工研究域電子情報学系, 助教 (70446962)
NISHIKAWA Kiyoshi 金沢大学, 名誉教授 (40019774)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 遠隔音声収録 / 指向性収音 / 雑音除去 / 明瞭性 / 開口長 |
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| Research Abstract |
In this research, we obtained the following major achievements through a study about distant speech recording. (1) 2 dimensional microphone array producing an easily steerable spotlight-shaped directional beam. (2) Enhancement of the intelligibility of captured speech by controlling 3 acoustic features such as mean pitch frequency, pitch frequency range and spectral intensity around 3 kHz. (3) Bass augmentation of speech captured through a portable microphone-array of an insufficient aperture length by using psychoacoustic phenomenon MISSING FUNDAMENTAL. These achievements are expected to be useful for making quality recordings of lecture speech.
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