Overview of CSSML - PowerPoint PPT Presentation
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Title: Overview of CSSML
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Overview of CSSML
- Yan Jun, Department Manager
- Anhui USTC iFLYTEK Co., Ltd
- University of Science Tech of China
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Presentation Outline
- Motivation and solutions
- Standardization
- Application
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CSSML
- Chinese Speech Synthesis Markup Language
- CSSML is a extension of SSML for Chinese
- Objective
- To meet Chinese speech synthesis requirements
- To provide more flexible and convenient methods
to adjust parameters and optimize speech
synthesis effect
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Motivation
- Special problems of Chinese speech synthesis
- Pronunciation of Chinese characters
- Disposure of words composed of English letters
- Segmentation of Chinese words
- Requirements of Chinese speech market
- Using background music
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Pronunciation of Chinese characters
- Syllables Chinese characters
- Chinese characters have four tones, or no tone to
express unstressed syllables - Chinese Romanization (PinYin) is widely used in
China as a formal notation of Chinese character
pronunciation.
?
guang
guang3
?
guang
guang1
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words composed of English letters
- Words composed of English letters
- English words James, New York
- PinYin words Anhui, Hefei, Jiang Zemin
- PinYin words speak as English words
- Not according to pronunciation custom
- Difficult to understand
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phoneme
- Attributes supported by the phoneme element are
extended - alphabet attribute can take py and ph attribute
can be PinYin notation - new lang attribute is added to indicate the
language or dialect of the content
???
????Jiang Zemin
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Segmentation of Chinese word
- Basic grammatical unit of Chinese Chinese
character - No blanks or punctuations to separate word
- Thus, one sentence may have several results of
segmenting words that may be correct
???????
???????? The Bridge of the Yangtse River in
Nanking city
???????? Jiang Daqiao, the mayor of Nanking city
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Segmentation of Chinese word
- Different result of segmenting words
- Greatly affect the meaning of the sentence
- The pronunciation of Chinese characters may be
different ( monograph ) - Thus, influence or even destroy the effect of
speech synthesis
???????? nan2 jing1 shi4 chang2 jiang1
da4 qiao2
???????? nan2 jing1 shi4 zhang3
jiang1 da4 qiao2
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word and phrase
- word element is used to define the boundary
between Chinese words - phrase element define the boundary between
phrases at different levels
???????
???????
? ????????
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Using background music
- Synthesized speech can be played together with
background music - To upgrade user experience
- Background music may be added in a given position
- Background sound may be switched during the
synthesis process
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environment
- environment element is introduced to present the
sound field environment of synthesizing - src attribute
- repeat attribute
1.wav ???????????,?????????,??????????????????,
???????????????????????,?????????
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CSSMLenterprise standard
- iFLYTEK setup the enterprise standard CSSML to
define the markup language used in speech
synthesis product in 2002 - Since 2003, the standard has been supported by
InterPhonic product series of iFLYTEK
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CSSML candidate of national standard
- Human-machine speech alternation standard
workgroup of the Ministry of China Information
Industry - CSSML was proposed in the workgroup in 2003 and
was widely debated - CSSML was voted through by the workgroup in Oct
24, 2005 and it will be submitted to the Ministry
of China Information Industry as a candidate of
national standard
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Application
- Speech synthesis product that support CSSML are
widely used in telecom, banking, insurance,
negotiable securities, education and so on. - telecom 168 and 114 information inquiry service
- securities stock comment, company introduction
- enterprise customer telephone service
- education to teach pronunciation of Chinese
characters and words
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Question?
- Thank you and good bye!
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