Speech Technology Center Solutions

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23 Φεβ 2014 (πριν από 3 χρόνια και 3 μήνες)

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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



I
f

a

mobile

device

is

lost

or

stolen,

the

entire

corporate

intranet

could

be

threatened





In

order

to

prevent

this

scenario

a
ccess

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

T
echnology
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 Verification

For 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 times

Step 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

W
indows
Mobile







E
-
mail service




Calendars




Organizers




Mobile Workstations

VoiceP
in

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 N
FC
-
enabled devices
(NFC allows payments directly from a mobile phone SIM card)




Stand alone offering to retail clients


VoiceCom SDK

Voice Command

Recognition

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

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 environment

Online 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





V
oice 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 Oparin

www.speechpro.com

ilya
@speechpro.com



4 Krasutskogo str


Saint
-
Petersburg

196084 Russia


tel. +7 812 331
-
0665

fax: +7 812 327
-
9297

VoicePin

VoiceCom SDK

Speech Enhancement