1. ElectoVox-RX® Technical Brief - Speech Enhancement in Various Noisy Environments -
Dominic Lee/CEO
TranSono Inc.
TranSono Inc.
Filename: ElectoVox-RX_Technical_briefing

2. Agenda Chronology Company Overview Product Overview Technology
Contents
Agenda
Chronology
Company Overview
Product Overview
Technology
Application Area
Product Roadmap
Market Competitiveness
References

3. 2007. 08 Dr. Jung presented the speech enhancement solution to Tech.
Chronology
Dr. Jung, the inventor introduced his speech enhancement solution
to IUCF.HYU
Dr. Jung presented the speech enhancement solution to Tech.
Review Board in IUCF.HYU.
Dr. Jung was invited as research professor. And HYU invested $0.1
million for project.
Mr. Ha, a Ph.D. candidate joined as a principal researcher for
application programming.
Mr. Lee, ex-CEO of AhnLab Coconut Inc was invited as to-be CEO.
Prototype on desktop computer was completed.
Project Kickoff with Corp. A for porting & test on cellular phones.
Separate NDAs agreement with Corp. A and Corp. B.
(note) IUCF.HYU: Industry-Univ. Corp. Foundation of Hanyang Univ.

4. 2008. 06 Speech quality testing was done with Corp. B at
Chronology
Speech quality testing was done with Corp. B at
Korea Test Laboratory (KTL)
Mr. Song, Ph.D. candidate in HYU joined as a senior
researcher and core-logic designer.
Preliminary venture company certification
ElectoVox-TX Demonstration to CEO of Corp. A.
HYU Holdings was founded.
Corp.A offered a contract with exclusive term.
MOU with Corp. B.
TranSono Inc. established

5. Company name: TranSono
Company Overview
Company name: TranSono
= Trans (Transfer) + Sono (Speech)
Product: ElectoVox
= Electo(Select) + Vox (Voice) 5

6. HYU Holdings Company Overview IUCF.HYU Private Investment Organization
TranSono Inc.
C: subsidiary company
B: subsidiary company

7. Member of Executive Board
Company Overview
Member of Executive Board
S. G. Lee/Chairman
(HYU Holdings CEO)
J. G. Lee/CEO
S. I. Jung/Dr.
(Inventor)
S. S. Park/Auditor
(Member of New Bar]

8. CEO & Founder Mr. Dominic Lee Company Overview
● BS degree, mechanical engineering, SKKU, Korea(1986)
MBA, Sogang university, Korea(2000)
AICPA(Delaware)/P.E./Certified Principal IT Auditor(Korea)
● CEO, TranSono Inc.,
CEO, Ahnlap Coconut Inc.,
VP of domestic sales, AhnLab
Mgr of e-Biz Hosting Service, IBM-Korea
Director, BroadVision Korea
● Book: Concurrent Engineering as a new design paradigm
● Specialty: CE, TQM, QFD, IT Audit 8
(Index) CE: Concurrent Engineering, QFD: Quality Function Deployment

9. Inventor & Founder Ph.D. Sung-il Jung Company Overview
● BS and MS degrees, computer engineering, Korea
maritime university(2000 and 2002)
Ph.D, electrical and computer engineering, HanYang
university(2007)
● Chief researcher of TranSono Inc.,
Research professor of HanyYang university,
Associate researcher of national creative research
initiative center for bio-artificial muscle,
Professor of small business training institute
● Domestic and international conference: 7,
Domestic paper: 5, International paper: 3,
Domestic patent: 6, International patent: 1,
Domestic book: 1
● Specialty: Speech signal processing 9

10. Founder Mr. Dong-Gyeong Ha Company Overview
● BS, MS degrees and completion of Ph.D
course, computer engineering, Korea
maritime university, Korea(998, 2000 and 2002)
● Principal researcher of TranSono Inc.,
CPT Division, Samsung Display
Researcher, Ocean Navigation Telecom R&D ctr
Adjunct professor at TongMyong university,
Researcher of MIT Inc.,
Researcher of Nenia Inc.
● Domestic Book: 2
● Specialty: Speech signal processing 10

11. Founder Mr. Jae-Hoon Song Company Overview
● BS, MS degrees and completion of
Ph.D course, computer science and engineering,
HanYang university(2000, 2002 and 2005)
● Senior researcher of TranSono Inc.
● Domestic and international conference: 19,
International paper: 6, Domestic patent: 6,
International patent 2
● Specialty: System on a chip design and IP core 11

12. Technology Introduction
The ElectoVox of TranSono Inc. has three pending patents and the epochal speech enhancement solution to overcome very difficult problems that existing ones have not yet addressed.
Our solution is an original algorithm including forward searching, psychoacoustic-based noise estimation, and improved spectral subtraction.
The development of ElectoVox ver. 1.0 for speech enhancement has completed, and echo cancellation and voice reinforcement solutions are also included in the product roadmap of TranSono Inc.
Our solution can be used for various application such as cellular phone, VoIP, hearing aid, voice remote control, and telematics.
Our solution shows very fast adaptation time and excellent speech quality than other single microphone-based solutions.
Our solution is cost effective for hardware development and production than existing dual microphone-based ones.

13. Speech Enhancement Technology Input: Noisy Speech Psychoacoustic
-based
Noise Estimation
Input: Noisy Speech
Output: Enhanced
Speech
Forward Searching
Improved
Spectral Subtraction

14. (Clean) Speech Recognition
Technology
(Clean) Speech Recognition
Feature Extraction
s c h o o l
“school”
Input: Clean Speech
Decision (Correct)
Recognition Algorithm
(DTW, HMM, ANN)
Endpoint Detection

15. (Noisy) Speech Recognition
Technology
(Noisy) Speech Recognition
Feature Extraction
s h o h t
“???”
Input: Noisy Speech
Decision (Incorrect)
Recognition Algorithm
(ex,DTW, HMM, ANN)
Wrong
Endpoint Detection

16. (Noisy) Speech Recognition with NR
Technology
(Noisy) Speech Recognition with NR
Noise Reduction
Feature Extraction
s c h o o 1
“school”
Decision (correct)
Recognition Algorithm
(DTW, HMM, ANN)
Input: Noisy Speech
Correct
Endpoint Detection

17. Speech Codec Technology Large Small Input: Noisy Speech
∙∙∙∙∙
Required Memory/
Bandwidth
Speech Encoding
Small
Noise Reduction
∙∙∙∙∙
Required Memory/
Bandwidth
Speech Encoding

18. Product-Market Matrix
Application Area
Product-Market Matrix
Market
Products
Telecom
Appliance
Niche Market
ElectoVox
Family
TeleVox
ElectoVoxlite
(IP Core)
Military
Comm.
Cellular
Bluetooth
Auto
telematics
IT Home Alliance
Voice to text
Pre-processor
Hearing Aids

19. Various Applications with ElectoVox
Application Area
Various Applications with ElectoVox
ASR including
Telematics
Telecommunication
(Cellular Phone,VoIP)
ElectoVox
Wireless and Military
(Bluetooth, Hearing Aid,
Wireless Set)
Voice Portal
, Call Center
, VAD

20. Mobile Communications
Application Area
Mobile Communications
ElectoVox-RX ON
Transmit
Cellular Phone
Receive

21. Bluetooth Phone Receive ElectoVox-RX ON Bluetooth Headset Transmit
Application Area
Bluetooth Phone
Receive
ElectoVox-RX ON
Bluetooth Headset
Transmit

22. Vehicle Hand-Free Applications
Application Area
Vehicle Hand-Free Applications
ElectoVox-RX ON
Voice Recognition Navigation
Receive
Transmit

23. Digital Hearing Aid ElectoVox-RX ON Digital Hearing Aid Receive
Application Area
Digital Hearing Aid
ElectoVox-RX ON
Digital Hearing Aid
Receive
Transmit

24. VoIP Applications ElectoVox-RX ON Transmit VoIP Internet Phone Receive
Application Area
VoIP Applications
ElectoVox-RX ON
Transmit
VoIP Internet Phone
Receive

25. Military Communication Devices
Application Area
Military Communication Devices
ElectoVox-RX ON
Transmit
Wireless Set
Receive

26. ElectoVox Roadmap RX NS + EC TeleVox ElectoVoxlite SoC SDK RX NR TX NR

27. Complicated H/W design and change Inefficient performance
Competitiveness
Competitive Analysis
○ No need for H/W alteration
○ Use of Single Mic
○ Fast & flexible technological
support for customer request
○ No additional cost due to
Engineering Change
○ Broad range of application
based on S/W component
S/W
Low cost
ElectoVox
Audience
etc…
High cost
Fluence
H/W
Dual Mic
Single Mic
Complicated H/W design and change
Inefficient performance

28. References
Version Architecture
Abbreviated word
Reference

29. ElectoVox-RX V1.0 Memory TX codec Encoder RX codec Decoder
Architecture
ElectoVox-RX V1.0
Memory
NR module
ARM9EJ-S
TX codec
Encoder
Mic.
RX codec
Decoder
Speaker
MSM

30. ElectoVox-RX V1.5 Memory TX codec Encoder RX codec Decoder
Architecture
ElectoVox-RX V1.5
Memory
EC module
NR module
ARM9EJ-S
TX codec
Encoder
Mic.
RX codec
Decoder
Speaker
MSM

31. ANN: Artificial Neural Network ARM: Advanced RISC Machine
Terminology
ANN: Artificial Neural Network
ARM: Advanced RISC Machine
ASR: Automatic Speech Recognition
DSP: Digital Signal Processor
DTW: Dynamic Time Warping
EC or E/C: Echo Cancellation
HMM: Hidden Markov Model
HYU: HanYang University
IUCF: Industry-University Corporation Foundation of
MSM: Mobile Station Modem (Qualcomm)
NR or N/R: Noise Reduction
RX: Receive
TX: Transmit
VAD: Voice Activity Detector
VR or V/R: Voice Reinforcement

32. TranSono Inc. Call to: Dominic(CEO)
Contact
TranSono Inc.
Call to: Dominic(CEO)
Address: Room 605, FTC Building, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, , Korea
TEL: ~22
Cellular Phone: