语音识别与语者识别基础技术1 .doc

語音識別與語者識別基礎技術 語音訊號處理基本觀念 語者識別基礎技術 語音識別基礎技術 教學成果及未來工作方向 中華技術學院電子系所 陳梧桐副教授 語音訊號處理基本觀念 語音信號的產生(Speech Production Mechanism) 本圖引用自Thomas F. Quatieri, Discrete-time speech signal processing principles and practice, Prentice Hall PTR, 2002 語音訊號的分類(Categorization of Speech Sounds) 本圖引用自Thomas F. Quatieri, Discrete-time speech signal processing principles and practice, Prentice Hall PTR, 2002 本圖引用自Thomas F. Quatieri, Discrete-time speech signal processing principles and practice, Prentice Hall PTR, 2002 數位語音訊號處理 本圖引用自Thomas F. Quatieri, Discrete-time speech signal processing principles and practice, Prentice Hall PTR, 2002  離散時間訊號(Discrete-Time Signals) 脈衝(Impulse)訊號 離散時間系統(Discrete-Time Systems) Convolution Model , 其中 稱為脈衝響應(Impulse Response) 離散時間富利葉轉換(Discrete-Time Fourier Transform) 例1. Z-轉換(Z-Transform) 頻域下的線性非時變系統(LTI Systems in the Frequency Domain) Convolution定理 (Convolution Theorem) Windowing定理(Windowing Theorem) 例2. () 本圖引用自Thomas F. Quatieri, Discrete-time speech signal processing principles and practice, Prentice Hall PTR, 2002 例3. 本圖引用自Thomas F. Quatieri, Discrete-time speech signal processing principles and practice, Prentice Hall PTR, 2002 Z轉換下的線性非時變系統 有限長度脈衝響應系統(FIR Systems) 無限長度脈衝響應系統(IIR Systems) 離散富利葉轉換(Discrete Fourier Transform)  Time Domain Periodic Nonperiodic Continuous Fourier Series Fourier Transform Nonperiodic Discrete (Discrete-Time Fourier Series) Discrete Fourier Transform Discrete-Time Fourier Transform Periodic Discrete Continuous Frequency Domain 連續時間系統到離散時間系統的變換 Sampling Theorem , 其中 本圖引用自Thomas F. Quatieri, Discrete-time speech signal processing principles and practice, Prentice Hall PTR, 2002 系統脈衝響應的取樣(Sampling a System Response) 聲帶振動的模型 (聲帶成型濾波器) 本圖引用自Thomas F. Quatieri, Discrete-time speech signal processing principles and practice, Prent