Institut de Technologie du Cambodge (ITC)Génie Informatique et Communication (GIC)

TTS (Text-To-Speech)

Seangmeng LONG[seangmeng@itc.edu.kh]

BarCamp

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What is TTS?

TTS stands for Text-To-Speech

It is a system (module) which takes as input text

in Khmer Unicode and produces Khmer speech

Electronic documents TTS system Khmer Speech

Input Output

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Our Method

Concatenation-Based Synthesis using Diphone

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Our Method (steps) Word Segmentation: → → →→→→→ →→ →→→→សម្�ចថាខ្មៅ�� សម្�ចថាខ្មៅ��→ , →→ →→→→សម្�ចថាខ្មៅ��

Text Normalization: ១២៤ ម្�យរយម្�បួ�ន→ , ម្�យពី�របួ�ន Text To Sound Conversion: → → kakthen

Syllabification: sa:la: → sa: . la:

Stress Assignment: sa: . la: → sə . la:

Sound Change: ចាក់� cak → caʔ

Intonation

Diphone Database

Integration

Applications Development (mail reader, doc reader, ...)

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New Statistical System Speech corpus

~450 sentences (~30 minutes) Automatic labeling

EHMM labeler Sphinx

Statistical parameter synthesis More natural, but buzzy

Unit selection Units of variable size (smallest unit is phone) More natural, but bad quality at join points

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Thanks for your attention.