数字语音处理概论12.ppt

Ma Xin School of Information Science and Engineering,Shandong University,Discrete Time Speech Signal Processing,Main Content,Fundamentals of Speech Process Speech Coding and Decoding Speech Synthesis Speech Recognition Speech Enhancement Related Algorithms,Textbook,Discrete-Time Processing of Speech Signals (IEEE Press ),Reference,L. R. Rabiner, R. W. Schafer, Speech Digital Signal Processing, Prentice Hall, EnglewoodCliffs, N. J. , 1978. L R Rabiner,B H Juang. Fundamentals of speech recognition .Englewood Cliffs, New Jersey: Prentice Hall Discrete Time Speech Signal Processing Principles and Practice,中文参考,杨行峻，迟惠生. 语音信号数字处理. 电子工业出版社 姚天任 数字语音处理.华中科技大学出版社 易克初、田斌、付强语 音信号处理 国防工业出版社 离散时间语音信号处理原理与应用（Discrete Time Speech Signal Processing Principles and Practice 之中译本）,How to Study,Strengthen experiment training Identify problems and discuss,How to Examine,Final score: 1.Report of experiment (50%) 2.Examination (30%) 3. Behavior (20%),Grade Assess,优 great 良 good 中 medium 及 pass 不及 bad,一、Speech is Peculiar Function of Human Being,Speech and language is closely related to intelligent activity, is main access to thought formation and emotion interchange.,Speech is most important、most efficient、most convenient and most common communication type.,二、speech signal processing,a subject to study digital signal processing techniques applied to speech signal processing ., By processing the speech parameters that reflect the speech important features can be acquired in order to efficiently transmit or store speech signal,achieve a particular purpose speech recognition, speaker identification extraction useful information form noisy signal speech synthesis Human-Computer Interaction,The Basic Content of Speech Processing Research,说的是什么内容？,是谁在说话？,计算机去说话？,提高音质？,Speech Recognition,Voiceprint Identification, Speech Synthesis,Speech Enhancement,记录语言？,Code and Decode,The machine should be able to do the following,Speech Processing and Application,Voice Command and ControlSmall vocabulary isolated word speech recognition,语音命令导航 (EasyCmd),家电控制 (Cmd99),声控号码簿 (Voice PhoneBook),声控拨号 (Voice Dialler, e.g.: DataBank),个人数字助理 (PDA, e.g. 快译通)；语音秘书,语音命令导航器 读者通过互联网页在DL中漫游 不需使用键盘或鼠标 只需口呼相应的“按钮”、“热链接”、菜单等,Large Vocabulary Speech Recognition,汉语语音听写机(EasyTalk)是汉字输入的重要手段,整句音字转换(EasyConv)是键盘输入的辅助手段,基于文本的语言理解(EasyNav)是理解关键之一,关键词检出(KWS)是基于内容的语音信息检索的基础,Speech Processing and Application,汉语整句输入法 当不想说话，不想为人所知，或不想影响别人时辅助手段 直接输入汉语拼音串 使用电话或手机时，可输入数字串,Speaker Recognitionidentification Distinguish,安全 (金融、网络、),个性化配置,语种识别,为多语种语音识别平台提供预分流,Speech Processing and Application,语种识别器 语音识别器支持多语种 语种识别器结果 使用汉语识别器还是英语识别器,声纹识别器 电子借书证：读者的各种信息(姓名、信用、联络、声纹、电子签名等) 声纹识别结果 读者资格确认,TTS (Text To Speech) 文语转换,有声电子读物,盲人阅读,获取信息的有声反馈,Speech Processing and Application,电话银行,Spoken Dialogue Systems,语音识别与理解（语音识别、语义分析与表示）,对话管理（记忆与遗忘）,查询信息的反馈,信息计算（信息库管理、搜索引擎、信息获取，及信息生成）,Speech Processing and Application,Voice quality assessment语音质量评估,多媒体语言教学,大嘴英语,随心所欲说英语,Speech Processing and Application,Narrowband speech processing-窄带语音处理,带宽窄（电话、无线通讯、电