IP Library › Patent Application 13669369
Patent Application
App. No. 13/669,369

ACOUSTIC VOICE ACTIVITY DETECTION (AVAD) FOR ELECTRONIC SYSTEMS

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Patent No.
US None
App. No.
13/669,369
Abstract

Acoustic Voice Activity Detection (AVAD) methods and systems are described. The AVAD methods and systems, including corresponding algorithms or programs, use microphones to generate virtual directional microphones which have very similar noise responses and very dissimilar speech responses. The ratio of the energies of the virtual microphones is then calculated over a given window size and the ratio can then be used with a variety of methods to generate a VAD signal. The virtual microphones can be constructed using either an adaptive or a fixed filter.

Claims (6)

1 . A method comprising:

forming a first virtual microphone by combining a first signal of a first physical microphone and a second signal of a second physical microphone;

forming a filter that describes a relationship for speech between the first psychical microphone and the second physical microphone;

forming a second virtual microphone by applying the filter to the first signal to generate a first intermediate signal, and summing the first intermediate signal and the second signal;

generating an energy ratio of energies of the first virtual microphone and the second virtual microphone; and

detecting acoustic voice activity of a speaker when the energy ratio is greater than a threshold value.

Assignments (15)
CORRECTIVE ASSIGNMENT TO CORRECT THE INCORRECT APPL. NO. 13/982,956 PREVIOUSLY RECORDED AT REEL: 035531 FRAME: 0554. ASSIGNOR(S) HEREBY CONFIRMS THE RELEASE OF SECURITY INTEREST. Recorded Nov 2, 2017
From: SILVER LAKE WATERMAN FUND, L.P., AS ADMINISTRATIVE AGENT
To: ALIPHCOM; ALIPH, INC.; MACGYVER ACQUISITION LLC; BODYMEDIA, INC.; PROJECT PARIS ACQUISITION LLC
Reel/Frame 045167/0597 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 1, 2017
From: ALIPHCOM (ASSIGNMENT FOR THE BENEFIT OF CREDITORS), LLC
To: JAWB ACQUISITION LLC
Reel/Frame 043746/0693 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 29, 2017
From: ALIPHCOM
To: ALIPHCOM (ASSIGNMENT FOR THE BENEFIT OF CREDITORS), LLC
Reel/Frame 043711/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 22, 2017
From: ALIPHCOM DBA JAWBONE
To: ALIPHCOM, LLC
Reel/Frame 043637/0796 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 22, 2017
From: ALIPHCOM, LLC
To: JAWB ACQUISITION, LLC
Reel/Frame 043638/0025 →
CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NO. 13870843 PREVIOUSLY RECORDED ON REEL 036500 FRAME 0173. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY INTEREST. Recorded Jan 26, 2017
From: ALIPHCOM; MACGYVER ACQUISITION, LLC; ALIPH, INC.; BODYMEDIA, INC.; PROJECT PARIS ACQUISITION LLC
To: BLACKROCK ADVISORS, LLC
Reel/Frame 041793/0347 →
SECURITY INTEREST Recorded Aug 27, 2015
From: ALIPHCOM; MACGYVER ACQUISITION LLC; ALIPH, INC.; BODYMEDIA, INC.; PROJECT PARIS ACQUISITION LLC
To: BLACKROCK ADVISORS, LLC
Reel/Frame 036500/0173 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNMENT PREVIOUSLY RECORDED ON REEL 035335 FRAME 0042. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNEE NAME IN ASSIGN. TYPOGRAPHICALLY INCORRECT, SHOULD BE "ALIPHCOM" W/O THE "INC.," CORRECTION REQUESTED PER MPEP 323.01B. Recorded Jul 22, 2015
From: BURNETT, GREGORY; JING, ZHINIAN; PETIT, NICOLAS
To: ALIPHCOM
Reel/Frame 036267/0528 →
SECURITY INTEREST Recorded Apr 28, 2015
From: ALIPHCOM; MACGYVER ACQUISITION LLC; ALIPH, INC.; BODYMEDIA, INC.; PROJECT PARIS ACQUISITION LLC
To: BLACKROCK ADVISORS, LLC
Reel/Frame 035531/0312 →
RELEASE OF SECURITY INTEREST Recorded Apr 28, 2015
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS AGENT
To: ALIPHCOM; ALIPH, INC.; MACGYVER ACQUISITION LLC; BODYMEDIA, INC.; PROJECT PARIS ACQUISITION LLC
Reel/Frame 035531/0419 →
RELEASE OF SECURITY INTEREST Recorded Apr 28, 2015
From: SILVER LAKE WATERMAN FUND, L.P., AS ADMINISTRATIVE AGENT
To: ALIPHCOM; ALIPH, INC.; MACGYVER ACQUISITION LLC; BODYMEDIA, INC.; PROJECT PARIS ACQUISITION, LLC
Reel/Frame 035531/0554 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 4, 2015
From: PETIT, NICHOLAS; BURNETT, GREGORY; JING, ZHINIAN
To: ALIPHCOM, INC.
Reel/Frame 035335/0042 →
NOTICE OF SUBSTITUTION OF ADMINISTRATIVE AGENT IN PATENTS Recorded Dec 3, 2014
From: DBD CREDIT FUNDING LLC, AS RESIGNING AGENT
To: SILVER LAKE WATERMAN FUND, L.P., AS SUCCESSOR AGENT
Reel/Frame 034523/0705 →
PATENT SECURITY AGREEMENT Recorded Dec 4, 2013
From: ALIPHCOM; ALIPH, INC.; MACGYVER ACQUISITION LLC; BODYMEDIA, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 031764/0100 →
SECURITY AGREEMENT Recorded Aug 8, 2013
From: ALIPHCOM; ALIPH, INC.; MACGYVER ACQUISITION LLC; BODYMEDIA, INC.
To: DBD CREDIT FUNDING LLC, AS ADMINISTRATIVE AGENT
Reel/Frame 030968/0051 →