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Title: Speech masking and cancelling and voice obscuration

Patent ·
OSTI ID:1093236

A non-acoustic sensor is used to measure a user's speech and then broadcasts an obscuring acoustic signal diminishing the user's vocal acoustic output intensity and/or distorting the voice sounds making them unintelligible to persons nearby. The non-acoustic sensor is positioned proximate or contacting a user's neck or head skin tissue for sensing speech production information.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
8,532,987
Application Number:
13/018,653
OSTI ID:
1093236
Country of Publication:
United States
Language:
English

References (18)

Speech processing system and method for enhancing a speech signal in a noisy environment patent December 1996
System and method for characterizing synthesizing and/or canceling out acoustic signals from inanimate sound sources patent April 2003
Characterizing, synthesizing, and/or canceling out acoustic signals from sound sources patent March 2007
Voice activity detector (VAD) -based multiple-microphone acoustic noise suppression patent September 2011
System and method for characterizing voiced excitations of speech and acoustic signals, removing acoustic noise from speech, and synthesizing speech patent April 2006
Hands free noise canceling headset patent December 1997
Methods and apparatus for non-acoustic speech characterization and recognition patent December 1999
Speech detection apparatus in which standard pattern is adopted in accordance with speech mode patent January 2002
System and method for characterizing voiced excitations of speech and acoustic signals, removing acoustic noise from speech, and synthesizing speech patent August 2006
Method and system for masking speech patent November 2006
System and method for characterizing voiced excitations of speech and acoustic signals, removing acoustic noise from speech, and synthesizing speech patent February 2006
System and method for characterizing voiced excitations of speech and acoustic signals, removing acoustic noise from speech, and synthesizing speech patent March 2004
Sound Masking Method and System patent April 1975
System and method for characterizing voiced excitations of speech and acoustic signals, removing acoustic noise from speech, and synthesizing speech patent April 2002
Partition system for open plan office spaces patent October 1984
System and method for characterizing, synthesizing, and/or canceling out acoustic signals from inanimate sound sources patent October 2007
Masking sound generator patent October 1977
Speech coding, reconstruction and recognition using acoustics and electromagnetic waves patent March 1998

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