1. Speech Technology Center Solutions
for
Mobile Phones

2. New Security Challenges
► Drastic increase in productivity of mobile devices leads to new security challenges
► More data stored on mobile devices (personal and corporate)
► Increased security threat

3. What’s at risk?
The vast majority of users (70.7%) keep confidential information on their mobile device
► personal and/or business correspondence
► access details to accounts
► corporate and personal data (documents, client info)
► intellectual property

4. Confidential information on mobile devices
What’s at risk?
Confidential information on mobile devices %
Personal (private) details
Nothing important
Confidential corporate documents
Company intellectual property
Private client and partner data
68,1%
29,3%
16,5%
14,9%
12,2%

5. Lost or Stolen
► If a mobile device is lost or stolen, the entire corporate intranet could be threatened
► In order to prevent this scenario access control should nclude both hardware/device-based authorization and application based authorization

6. Voice Biometrics
► Each voice is absolutely unique
► No additional hardware required for mobile devices
► Voice can not be passed to anyone else
and guarantees identity of a person
► Voice can not be lost or stolen

7. Verification Technologies
GMM/SVM
► Statistical Gaussian Mixture Models and Support Vector Machines
► State-of-the-Art approach
► Not enough robustness to noise
Spectral-Formant Method
► Proprietary STC method
► Formants – individual features of vocal tract

8. Technology Voice Pin
Spectral Formant method
► Comparison of formant positions
► Different formant positions result from individual features
of a human’s vocal tract
Formants visualized on the spectrogram

9. Speaker Verification For Windows Mobile
VoicePin
Speaker Verification
For Windows Mobile

10. VoicePin at glance
► Reliable speaker verification solution for mobile phones
► Biometric protection for mobile devices and/or application on mobile devices
► Easy to use
► Few seconds per authentication
► Couple of moments required to create a speaker “voice-print”
► Must be performed only once!
► Multiple users
► Language independent
► No additional hardware required

11. Easy to Use Voice Pin
Step 1
Register a voiceprint by repeating a password 3 times
Step 2
Pronounce a password once for an authentication
Language: English
Platform: Windows Mobile
Requirements: PocketPC
Install: Install and Uninstall

12. Technical characteristics Voice Pin
► 175 kb Memory footprint
► Standard built-in microphone is sufficient
► Up to 100 registered users
► Real-time authentication
► Automatic noise detection and adaptive speech enhancement
► Multilanguage interface
► Easy to integrate with other applications
► High reliability of authentication:
► FAR (False Acceptance Rate)
► Input signal SNR (Signal-to-Noise Ratio) >= 20 dB

13. Voice Pin for Corporate clients
► User authentication for corporate mobile devices
► Access to folders or files containing sensitive information
► Access to particular functions / data on mobile devices s
SMS,
client/partner info
Private clients:
► Access control for children

14. Voice Pin can be easily integrated
VoicePin for ISVs
Voice Pin can be easily integrated
with any other application developed
for Windows Mobile
► service
► Calendars
► Organizers
► Mobile Workstations

15. VoicePin for Telecom
► New option for corporate and government clients - mobile devices with built-in biometric voice authentication
► Voice authentication for devices attached to contracts
► Biometric authentication for NFC-enabled devices (NFC allows payments directly from a mobile phone SIM card)
► Stand alone offering to retail clients

16. Voice Command Recognition
VoiceCom SDK
Voice Command
Recognition

17. VoiceCom SDK
VoiceCom - reliable voice command recognition technology
Voice interface - launch applications with voice commands
Language independent - based on language-independent and speaker-independent algorithms
Robust to noisy environment – STC noise reduction software allows VoiceCom to work in noise environments
Language: English
Platform: Windows Mobile
Requirements: PocketPC
Install: Install and Uninstall

18. Voice Com
Applications
► Corporate Software Solutions
► Mobile Phones, Smartphones, PDAs, Internet tablet
► Media Devices with built-in microphone and Windows Mobile OS
Features
► Robust to noise (SNR < 15 dB, noisy street environment)
► Reliability: > 98%
► Fast enrollment procedure
► Can be adapted to a certain speaker
► Speaker-independent
► Language-independent
► Separate command database
► Real-time processing

19. Online speech enhancement Implementation on the chipset
Noisy environment
Online speech enhancement
Implementation on the chipset

20. Hands-off Speech Enhancement
► STC algorithms tune automatically
► Adaptive algorithms
of noise cancellation
► No need for manual tuning - “hands-off” approach
► Can be integrated in mobile phones to improve speech intelligibility

21. Denoiser Mobile
Audio enhancement improve speech
intelligibility for noisy recordings
► Voice mails
► Pre-recorded phone conversation
► Audio files

22. STC – Areas of Expertise
Language-independent technologies
► Speech Enhancement (noise robustness)
► Professional Voice Recording
► Automatic Speaker Identification
► Identification (searchable databases)
► Verification
Russian language based technologies
► Speech Synthesis (Text-to-Speech)
► Automatic Speech Recognition
► IVR systems
► Russian LVCSR
► Keyword Spotting

23. Only Facts: STC Today
► 18 years on the market
► 250 employees
► Software and hardware products
► Only STC proprietary technologies
► ISO-9001:2000 certified
► Co-editor of ISO biometric standards

24. Only Facts: STC R&D Cluster
► Unique scientific school
► 100 specialists strong R&D team
► Researchers, algorithmists and programmers
► 25 PhDs
► Maths, physics, linguistics…
► Collaboration with top universities
► Research support, student scholarships

25. Contacts
Ilya Oparin
4 Krasutskogo str
Saint-Petersburg Russia tel fax:
VoicePin VoiceCom SDK Speech Enhancement