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來源資料
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題名 | Determining the Retardation of Glottal Return Phase using LP Residue=利用線性預測殘留以測定聲門恢復相位之延滯性 |
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作者 | 胡懷祖; 周賢興; | 書刊名 | 宜蘭農工學報 |
卷期 | 14 1997.06[民86.06] |
頁次 | 頁91-104 |
分類號 | 334 |
關鍵詞 | 聲門恢復相位; 延滯指數; 線性預測殘留; LF-模型; 反向過濾; Glottal return phase; Retardation index; Linear prediction residue; Lf-model; Inverse filtering; |
語文 | 英文(English) |
英文摘要 | 在過去聲門恢復相位主要是以氣體在聲門的流動來測知,而聲門流動氣體最令人 感到詬病之處即難次其無法完全由反向過濾的技術取得。為了克服這項缺失,我們從線性預 測殘留特性著手研究出稱之為「延滯指數」的新測定術, 並將重點擺在那些已經被 LF- 模 型參數所認定的特徵。新測定術的效能則是藉由包含樣板、嘎吱、沙啞的九個語音樣本予以 檢驗,所獲得的延滯指數值從小至大分別是嘎吱音、樣板音、沙啞音,其結果除與其他學者 的測量值是相符外,我們由實驗數據中發現屬性相同的音質其延滯指數值趨於集中,而不同 音質的指數值則呈現區隔,從這點更可顯示出它在語音型態上判別之可行性。這項研究成果 的背後具有兩層含義。首先,由聲門流動氣體轉為殘留信號的演變過程得以揭曉。其次,藉 由殘留信號的分析以獲致聲門恢複相位的適切性得以確認,本測定術可能應用之範圍包括則 有音質的客觀判斷、語音合成與辨認以及聲音病變之診斷。 fry, modal, and breathy phonations. Such a sequence also consents with the measures obtained by other researchers. Moreover, it is found from the experimental results that the retardation indexes of the three types of phonations cluster for every individual type and separate from each other. This apparently shows an advantage for characterizing voice types. The meaningfulness behind the achievement of this study is twofold. First, the evolutionary process from the glottal flow to the residue can be revealed. Second, the adequacy of acquiring the glottal return phase from the residue has been substantiated. Possible applications of the proposed acoustic measure include the objective quality appraisal, speech synthesis and recognition, and aids to the diagnosis of pathological voices. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。