Speech Technology Center Solutions for
Mobile Phones
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
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 email accounts
► corporate and personal data (documents, client info)
► intellectual property
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%
0 10 20 30 40 50 60 70 %
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
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
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
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
VoicePin
Speaker VerificationFor Windows Mobile
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
Easy to Use Voice Pin
Step 1 Register a voiceprint by repeating a password 3 timesStep 2 Pronounce a password once for an authentication
Language: English
Platform: Windows Mobile
Requirements: PocketPC
Install: Install and Uninstall
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
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 e-mails SMS, client/partner info
► Access to folders or files containing sensitive information
Private clients:
► Access control for children
VoicePin for ISVs
Voice Pin can be easily integrated with any other application developed
for Windows Mobile
► E-mail service
► Calendars
► Organizers
► Mobile Workstations
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
VoiceCom SDK
Voice CommandRecognition
VoiceCom SDK
VoiceCom - reliable voice command recognition technologyVoice interface - launch applications with voice commandsLanguage independent - based on language-independent and speaker-independent algorithmsRobust 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
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
Speech Enhancement
Noisy environmentOnline speech enhancement
Implementation on the chipset
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
Denoiser Mobile
Audio enhancement improve speech intelligibility for noisy recordings
► Voice mails
► Pre-recorded phone conversation
► Audio files
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
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
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
Contacts
Ilya [email protected]
4 Krasutskogo str Saint-Petersburg196084 Russia
tel. +7 812 331-0665fax: +7 812 327-9297
VoicePin VoiceCom SDK Speech Enhancement