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内耳の情報処理を模倣した音声信号収集システムの性能改善
https://kitami-it.repo.nii.ac.jp/records/7607
https://kitami-it.repo.nii.ac.jp/records/7607f126ed05-34ba-4d02-94e6-540d2a326154
名前 / ファイル | ライセンス | アクション |
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No223.pdf (1.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2014-02-25 | |||||
タイトル | ||||||
言語 | ja | |||||
タイトル | 内耳の情報処理を模倣した音声信号収集システムの性能改善 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Improvement of the Extremal Sampler System Modeled on Auditory Processing in the Inner Ear | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 聴性情報処理 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 極値 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 最小二乗法 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 音声 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | サンプリング | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | auditory processing | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | extrema | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | least squared method | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | speech | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | sampling | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
その他のタイトル | ||||||
その他のタイトル | Improvement of the Extremal Sampler System Modeled on Auditory Processing in the Inner Ear | |||||
著者 |
吉田, 秀樹
× 吉田, 秀樹× 中野, 正博× 行正, 徹× 福地, 博行× 進藤, 覚弥× 有田, 敏彦× 鞘師, 守× 前田, 康成× 羽山, 雄偉× 横野, 和也 |
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著者別名 | ||||||
姓名 | YOSHIDA, Hideki | |||||
言語 | en | |||||
著者別名 | ||||||
姓名 | NAKANO, Masahiro | |||||
言語 | en | |||||
著者別名 | ||||||
姓名 | YUKIMASA, Toru | |||||
言語 | en | |||||
著者別名 | ||||||
姓名 | FUKUCHI, Hiroyuki | |||||
言語 | en | |||||
著者別名 | ||||||
姓名 | SHINDO, Akiya | |||||
言語 | en | |||||
著者別名 | ||||||
姓名 | ARITA, Toshihiko | |||||
言語 | en | |||||
著者別名 | ||||||
姓名 | SAYASHI, Mamoru | |||||
言語 | en | |||||
著者別名 | ||||||
姓名 | MAEDA, Yasunari | |||||
言語 | en | |||||
著者別名 | ||||||
姓名 | HAYAMA, Yuui | |||||
言語 | en | |||||
著者別名 | ||||||
姓名 | YOKONO, Kazuya | |||||
言語 | en | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 先行報告した音声帯域(80-5,120Hz)のデータ収集システムの性能改善を実施した。同システムは従来のPCMデータを、6帯域に分割された時間-周波数平面を構成する極大値と極小値の時系列に変換し、聴性認識の研究や応用製品の開発に資することを目的とする。帯域制限波の極値の記録から元の音響情報は再生できるので、許容誤差内で高速に極値を記録することが課題であった。解決の鍵は極値を推定することに見出され、標本化周波数を従来値の44,100Hzから22,050Hzに下げたことで、より少ない入力データから情報抽出が実現し、計算時間の約67%が短縮された。さらに共有メモリの設計をブロック長16,384バイト、ブロック数2とし、3種類の汎用フォーマットを提案したことで、ファイル容量の約65%が削減され、6秒毎に出力されていたファイルが約1.5秒毎に生成できる様に改良された。 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Estimation of the local maximal data in the band-limited waveform by using the least squared method has been a key technique in order to reduce processing time, especially for the six-channel finite-impulse-response filter-array on our proposed real-time acquisition system. According to our previous study, more than half of minimum data in the band-pass filtered waveform can be substituted by average of the contiguous maximum data, with achieving lower than 4% of phase error. Not only approximate 67% reduction of processing time but also less than half of file size, e.g., approximate 65% saving of 1-h speech data, has been attained, releasing three types of the. ext file format for the extremal data. Further, a design of shared memory has played on important role in performance of response on a single processor system of PC-AT compatible computer, offering that length and number of blocks, and sampling frequency were 16,384-byte, 2 and 22,050hz, respectively. We have improved the acquisition system for the speech bandwidth (80-5,120Hz), in which conventional pulse-code-modulated data series can be simply converted to the extremal data in the tem-pro-spectral domain, generating files every 1.5-s, for manipulation of fine acoustic structure, synthesis, succeeding processes for recognition and/or categorization, and so forth. | |||||
書誌情報 |
バイオメディカル・ファジィ・システム学会誌 巻 12, 号 1, p. 19-28, 発行日 2010-05 |
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出版者 | ||||||
出版者 | バイオメディカル・ファジィ・システム学会 | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |