1. SPEECH TECHNOLOGY An Overview Gopala Krishna. A

2. SPEECH TECHNOLOGY WHAT IS SPEECH TECHNOLOGY ABOUT ??
SPEECH TECHNOLOGY IS ABOUT PROCESSING HUMAN SPEECH
as SIGNAL
as a form of LANGUAGE

3. SPEECH TECHNOLOGY Speech Processing By Machine
Algorithms: Speech Recognition, synthesis, coding etc.

4. SPEECH TECHNOLOGY WHAT ALL IS INVOLVED IN PROCESSING SPEECH ??
MULTI-DISCIPLINARY FIELD
Linguistics
Physiology
Psychology
Signal Processing
Acoustics (Physics)
Statistics
Pattern Recognition
Communication Theory
Computer Science: A.I.
Heuristics / Machine Learning
Speech Technology

5. Applications: Man-Machine Communication Bio Metrics
Smart Talking Machines, devices
Speech enabled web interface
Communication
Speech Coding
Speech Enhancement
Bio Metrics
Speaker Identification – security applications
Entertainment Technology
Singing Voices
Voice Conversion
Artificial Characters / Avatar

6. Research Areas: Speech Recognition (Speech To Text)
Speech Synthesis (Text to Speech)
Speech Coding (Compression of speech)
Speech Enhancement (Voice quality)
Speaker Recognition (Identity of the speaker)
Spoken Language Identification (Which language?)
Language Models (Modeling of natural text)
Multimedia (Integration of Audio & Visual modes)

7. WHAT ARE WE DOING CURRENTLY ??
SPEECH TECHNOLOGY
WHAT ARE WE DOING CURRENTLY ??
INDIAN LANGUAGE SPEECH SYNTHESIS
Hindi and Telugu TTS building
Prosody
SPEECH RECOGNITION
- Large Vocabulary ASR
- Landmark-based ASR
3. SPEECH-ENABLED INTERFACES

8. Text-To-Speech Synthesis (TTS)
Indian Language TTS Effort
Hindi, Telugu, Tamil, Kannada, Bengali
Text Normalization
Machine learning Techniques
Speech Segmentation
Ergodic HMMs, SVMs….etc

9. Automatic Speech Recognition
Large Vocabulary ASR
“Mimic”ing the Sphinx
Alternative ASR Techniques
HMM-ANN Hybrid
Dynamic Bayesian Networks (DBNs)
Landmark-based Segmentation

10. Speech Enabled Interfaces
Screen Readers
RAVI (Reading Aid for the Visually Impaired)
Porting to Low Memory devices
Talking Tourist Aid Agent (PDA)
Speech-to-Speech Devices
Limited Domain Bi-lingual translation

11. Projects Hindi TTS (Sponsored by NOKIA)
Telugu TTS (Sponsored by Bhrigus Inc.)
Speech Recognition Systems for Indian Lang. (Sponsored by HP labs India)
Reading Software For Blind (Sponsored by Ministry of Social Justice).

12. Stream Courses Speech Technology: A Practical Introduction
Topics in Speech Processing
Building TTS and ASR Systems
Signal Processing
Language Modeling
- Intro. To NLP
- Language and Statistics
Machine Learning, Pattern Recognition

13. WHO WILL YOU BE WORKING WITH ??
SPEECH TECHNOLOGY
WHO WILL YOU BE WORKING WITH ??
S. P. Kishore CMU, IIIT)
Prof. Rajeev Sangal
Dr. Vasudeva Varma
Faculty Members of Speech Group at CMU
Dr. Alan Black, Dr. Jim Baker… (TTS) (ASR)
Fellow researchers

14. What you get at the end
Career Opportunities – Off late, many companies and R & D organizations are investing in Indian Language and specifically in speech systems
- Microsoft Research (Bangalore), HP Labs India, Yahoo India
Research skills – publications
Interaction and collaboration with faculty members of Speech Group at Carnegie Mellon
System building skills - Would have developed speech systems using state of art techniques
Opportunities for higher education in India and abroad

15. SPEECH TECHNOLOGY
QUESTIONS
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