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Title: US5953700: Portable acoustic interface for remote access to automatic speech/speaker recognition server
[ Derwent Title ]

Country: US United States of America

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11 pages

Inventor: Kanevsky, Dimitri; Ossining, NY
Maes, Stephane Herman; Danbury, CT
Poon, Peter S.; Somers, NY
Prochilo, Carl; Woodstock, NY

Assignee: International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 1999-09-14 / 1997-06-11

Application Number: US1997000873079

IPC Code: Advanced: G10L 11/00; G10L 15/00; G10L 15/02; G10L 15/10; G10L 15/20; G10L 15/28; G10L 17/00; G10L 21/02; H04M 3/42;
IPC-7: G10L 5/06;

ECLA Code: G10L15/30;

U.S. Class: Current: 704/270.1; 704/273; 704/E15.047;
Original: 704/246; 704/273;

Field of Search: 704/200,246-250,270,273,275,231,251

Priority Number:
1997-06-11  US1997000873079

Abstract:     A portable acoustic signal (speech signal) preprocessing (SSP) device for accessing an automatic speech/speaker recognition (ASSR) server comprises a microphone for converting sound including speech, silence and background noise signals to analog signals; an analog signals to digital converter for converting the analog signals to digital signals; a digital signal processor (DSP) for generating feature vector data representing the digitized speech and silence/background noise, and for generating channel characterization signals; and an acoustic coupler for converting the feature vector data and the characterization signals to acoustic signals and coupling the acoustic signals to a communication channel to access the ASSR server to perform speech and speaker recognition at a remote location. The SSP device may also be configured to compress and encrypt data transmitted to the ASSR server via the DSP and encryption keys stored in a memory. The ASSR server receives the preprocessed acoustic signals to perform speech/speaker recognition by setting references, selecting appropriate decoding models and algorithms to decode the acoustic signals by modeling the channel transfer function from the channel characterization signals and processing the silence/background noise data to reduce word error rate for speech recognition and to perform accurate speaker recognition. A client/server system having the portable SSP device and the ASSR server can be used to remotely activate, reset, or change personal identification numbers (PINs) or user passwords for smartcards, magnetic cards, or electronic money cards.

Primary / Asst. Examiners: Hudspeth, David R.; Storm, Donald L.

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Parent Case:

    This application is related to U.S. application Ser. No. 08/871,784, filed Jun. 11, 1997 entitled "Apparatus and Methods for Speaker Verification/Identification/Classification Employing Non-Acoustic and/or Acoustic Models and Databases", which is commonly assigned and is filed concurrently with the present application.

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First Claim:
Show all 23 claims
What is claimed is:     1. A portable acoustic signal preprocessing device for accessing an automatic speech/speaker recognition (ASSR) server, comprising:
  • a microphone for converting sound including speech, silence and background noise signals to analog signals;
  • an analog signals to digital converter for converting said analog signals to digital signals;
  • a digital signal processor (DSP) for generating from said digital signals feature vector data representing said digitized speech, and for generating characterization signals for processing by said ASSR server to estimate a channel signature of a communication channel linking said portable device and said ASSR server;
  • an acoustic coupler for converting said feature vector data and said characterization signals to acoustic signals and for coupling to an acoustic communication device for communicating said acoustic signals over said communication channel to said ASSR server for performing speech and speaker recognition at a remote location.

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Forward References: Show 64 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (64)   |   Backward references (12)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 23pp US3896266  1975-07 Waterbury   Credit and other security cards and card utilization systems therefore
Get PDF - 24pp US4130731  1978-12 Bolgiano et al.  International Mobile Machines Incorporated Portable telephone system
Get PDF - 8pp US4811399  1989-03 Landell et al.  ITT Defense Communications, a Division of ITT Corporation Apparatus and method for automatic speech recognition
Get PDF - 9pp US4827518  1989-05 Feustel et al.  Bell Communications Research, Inc. Speaker verification system using integrated circuit cards
Get PDF - 8pp US4847885  1989-07 Vittorelli  Ing. C. Olivetti & C., S.p.A. System for measuring and automatically compensating for the distorsions of a connection between a telephone apparatus and a central voice processing unit
Get PDF - 11pp US5166971  1992-11 Vollert  Siemens Aktiengesellschaft Method for speaker recognition in a telephone switching system
Get PDF - 16pp US5293424  1994-03 Holtey et al.  Bull HN Information Systems Inc. Secure memory card
Get PDF - 9pp US5371901  1994-12 Reed et al.  Motorola, Inc. Remote voice control system
Get PDF - 10pp US5414755  1995-05 Bahler et al.  ITT Corporation System and method for passive voice verification in a telephone network
Get PDF - 12pp US5680506  1997-10 Kroon et al.  Lucent Technologies Inc. Apparatus and method for speech signal analysis
Get PDF - 13pp US5714741  1998-02 Pieterse et al.  Koninklijke PTT Nederland N.V. Device for transparent interaction between an IC card and a remote terminal
Get PDF - 7pp US5809464  1998-09 Kopp et al.  Alcatel N.V. Apparatus for recording speech for subsequent text generation
Foreign References: None

Other Abstract Info: DERABS G1999-195012

Other References:
  • Lawrence E. Rabiner and Ronald W. Schafer, Digital Processing of Speech Signals, Prentice Hall, Upper Saddle River, NJ, 1978.

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