IP Library Granted Patent US 7,542,909
Granted Patent B2
US 7,542,909 · App. 10/951,281 · Granted Jun 2, 2009

Method, system, and apparatus for repairing audio recordings

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Quick Facts
Patent No.
US 7,542,909
App. No.
10/951,281
Granted
Jun 2, 2009
Kind
B2
Abstract

A system and method is disclosed for detecting and repairing audio recordings that contain busy signals and extended periods of silence by searching for clusters of silence by reviewing the amplitude in an audio recording sample and listing each silence and sample time.

Claims (11)

1. A method for repairing an audio recording comprising the steps of:

i. inputting said audio recording into a computer apparatus operatively configured to:

ii. examine said audio recording and determine periods of time corresponding to cluster of substantial silence within said audio recording;

iii. characterize said clusters of substantial silence as fast busy signal, slow busy signal, hang-up silence, and final silence waveform patterns by comparing to a pre-determined waveform pattern of fast busy signals, slow busy signals, hang-up silences, and final silences;

iv. identify the location of an anomaly point of the waveform pattern in the audio recording and truncate said recording from said anomaly point; and

v. outputting said audio recording from said computer apparatus.

2. A method, in accordance with claim 1 , further comprising returning an error indication when said waveform pattern does not correlate with said pre-determined waveform pattern.

3. A method, in accordance with claim 1 , wherein location of said hang-up silence is determined by subtracting the length of the detected busy signal from the location of the first inter-busy signal.

4. A method, in accordance with claim 1 , wherein said examining said audio recording comprises analyzing said audio recording amplitude and searching for strings or series of amplitudes that are very near to zero.

5. A method, in accordance to claim 4 , wherein said search for strings or series of amplitudes that are very near to zero, precludes said strings or series of amplitudes having durations falling outside pre-determined minimum and maximum lengths.

6. A method, in accordance with claim 1 , wherein said fast and slow busy signals are characterized as a regular series of silences.

Assignments (8)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 13, 2023
From: NUANCE COMMUNICATIONS, INC.
To: MICROSOFT TECHNOLOGY LICENSING, LLC
Reel/Frame 065552/0934 →
PATENT RELEASE (REEL:018160/FRAME:0909) Recorded May 20, 2016
From: MORGAN STANLEY SENIOR FUNDING, INC., AS ADMINISTRATIVE AGENT
To: NUANCE COMMUNICATIONS, INC., AS GRANTOR; ART ADVANCED RECOGNITION TECHNOLOGIES, INC., A DELAWARE CORPORATION, AS GRANTOR; SPEECHWORKS INTERNATIONAL, INC., A DELAWARE CORPORATION, AS GRANTOR; TELELOGUE, INC., A DELAWARE CORPORATION, AS GRANTOR; DSP, INC., D/B/A DIAMOND EQUIPMENT, A MAINE CORPORATON, AS GRANTOR; HUMAN CAPITAL RESOURCES, INC., A DELAWARE CORPORATION, AS GRANTOR; INSTITIT KATALIZA IMENI G.K. BORESKOVA SIBIRSKOGO OTDELENIA ROSSIISKOI AKADEMII NAUK, AS GRANTOR; NOKIA CORPORATION, AS GRANTOR; MITSUBISH DENKI KABUSHIKI KAISHA, AS GRANTOR; STRYKER LEIBINGER GMBH & CO., KG, AS GRANTOR; NORTHROP GRUMMAN CORPORATION, A DELAWARE CORPORATION, AS GRANTOR; SCANSOFT, INC., A DELAWARE CORPORATION, AS GRANTOR; DICTAPHONE CORPORATION, A DELAWARE CORPORATION, AS GRANTOR
Reel/Frame 038770/0869 →
PATENT RELEASE (REEL:017435/FRAME:0199) Recorded May 20, 2016
From: MORGAN STANLEY SENIOR FUNDING, INC., AS ADMINISTRATIVE AGENT
To: NUANCE COMMUNICATIONS, INC., AS GRANTOR; ART ADVANCED RECOGNITION TECHNOLOGIES, INC., A DELAWARE CORPORATION, AS GRANTOR; SPEECHWORKS INTERNATIONAL, INC., A DELAWARE CORPORATION, AS GRANTOR; TELELOGUE, INC., A DELAWARE CORPORATION, AS GRANTOR; DSP, INC., D/B/A DIAMOND EQUIPMENT, A MAINE CORPORATON, AS GRANTOR; SCANSOFT, INC., A DELAWARE CORPORATION, AS GRANTOR; DICTAPHONE CORPORATION, A DELAWARE CORPORATION, AS GRANTOR
Reel/Frame 038770/0824 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 9, 2013
From: DICTAPHONE CORPORATION
To: NUANCE COMMUNICATIONS, INC.
Reel/Frame 029596/0836 →
MERGER Recorded Sep 13, 2012
From: DICTAPHONE CORPORATION
To: NUANCE COMMUNICATIONS, INC.
Reel/Frame 028952/0397 →
SECURITY AGREEMENT Recorded Aug 24, 2006
From: NUANCE COMMUNICATIONS, INC.
To: USB AG. STAMFORD BRANCH
Reel/Frame 018160/0909 →
SECURITY AGREEMENT Recorded Apr 7, 2006
From: NUANCE COMMUNICATIONS, INC.
To: USB AG, STAMFORD BRANCH
Reel/Frame 017435/0199 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 31, 2005
From: COTE, WILLIAM F.
To: DICTAPHONE CORPORATION
Reel/Frame 015976/0587 →