Lecture5 - Lecture 5 Text to Speech Synthesis(TTS and Time...

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1 Lecture 5 Text to Speech Synthesis (TTS) and Time Domain Processing (some slides are courtesy of Prof. Larry Rabiner)
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2 Wavesurfer Demo Download software from: www.speech.kth.se/wavesurfer /download.html Time and Frequency Domain Analysis: pitch estimation, formant frequency estimation, etc. Types of Modern Synthesis Articulatory Synthesis: Model movements of articulators and acoustics of vocal tract Formant Synthesis: Start with acoustics, create rules/filters to create each formant Concatenative Synthesis: Use databases of stored speech to create new utterances.
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3 Very Early Attempts at Synthesis The mechanical model of speech production built by Riesz (1937). A block diagram of the Homer Dudley’s VODER (1939)
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4 How the VODER was operated.. Circuit-Based Synthesizer: OVE Could manipulate F1 and F2 to generate vowels
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5 Modern TTS Systems 1960’s first full TTS Umeda et al (1968) 1970’s Joe Olive 1977 concatenation of linear prediction diphones Speak and Spell 1980’s 1979 MIT MITalk (Allen, Hunnicut, Klatt) 1990’s - present Diphone synthesis Unit selection synthesis Text Normalization Analysis of raw text into pronounceable words Sample problems: He stole $100 million from the bank It's 13 St. Andrews St.
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