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PF-STAR: emotional speech synthesis Istituto di Scienze e Tecnologie della Cognizione, Sezione di Padova – “Fonetica e Dialettologia”, CNR.

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Presentation on theme: "PF-STAR: emotional speech synthesis Istituto di Scienze e Tecnologie della Cognizione, Sezione di Padova – “Fonetica e Dialettologia”, CNR."— Presentation transcript:

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2 PF-STAR: emotional speech synthesis Istituto di Scienze e Tecnologie della Cognizione, Sezione di Padova – “Fonetica e Dialettologia”, CNR

3 Analysis of emotive speech: audio Recordings: /’aba/, /’ava/, /m’amma/ Cues extraction and analysis: Intensity, duration, pitch, pitch range, formants. F0 stressed vowel mean and F0mid values are strongly correlated. Shimmer, Jitter, HNR, Hammarberg’s index, Spectral flatness, Spectral energy distributions: voice quality correlates. F0mean (global and for stressed vowel), F0mid, and F0range for /’aba/ anger (A) joy (J) fear (F) sadness (SA) disgust (D) surprise (SU) neutral (N)

4 Analysis of emotive speech: voice quality Discriminant analysis: classification scores: 60/70 % for stressed and unstressed vowel Best score: Fear, Anger Worst score: Surprise Voice quality characterization: Anger: harsh voice (/’a/) Disgust: creaky voice (/a/) Joy, Fear, Surprise : breathy voice VOQUAL 2003 paper: “Emotions and Voice Quality: Experiments with Sinusoidal Modeling”

5 Processing of emotive speech Neutral Target Disgust Target Sadness Disgust Sadness Results: Time-stretch and (formant preserving) pitch shift alone can’t account for the principal emotion related cues Spectral conversion can account for some of the emotion cues Disgust (Ps+Ts) Sadness (Ps+Ts) Neutral Emotive transformation based on sinusoidal modeling:

6 Processing of emotive speech Neutral Emotive transformation based on sinusoidal modeling: Neutral anger disgust joy fear surprise sadness Ps+TsPs+Ts+ScTarget

7 SI voice processing for TTS systems Processing of emotive speech: results Emotive synthesis based on FESTIVAL MBROLA (Male Voice) Neutral Anger Disgust Joy Fear Surprise Sadness Ps+TsPs+Ts+VQtrTarget

8 ETTS Audio Examples “Neutral” Prosody Anger Disgust Fear Joy Surprise Sadness E-ProsodyE-Prosody+VQ

9 Mark-Up Languages for E-TTS Hierarchic description of emotive voice: High Level: emotive tag (e.g.,,,, etc.) Medium Level: phonetic voice description (e.g.,,,, etc.) Low Level: acoustic description (e.g.,,,, etc.) Definition of speaker-independent rules to control voice quality within a text-to-speech synthesizer.


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