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Sound intelligibility enhancement using a psychoacoustic model and an oversampled filterbank
   
Document Number
US Patent 7050966
Issued Date
May 23, 2006
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Abstract
A system and method of improving signal intelligibility over an interference signal is provided. The system includes a psychoacoustic professor having a psychoacoustic model wherein the level of a signal-of-interest is improved so as to be audible above noise and so as not to exceed a predetermined maximum output level. The system can be combined with active noise cancellation.
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Number of Claims:
29
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Owner
AMI Semiconductor, Inc. (Pocatello, ID)
Published
May 23, 2006
Application Number
10/214,056
Filed
August 7, 2002
US Classification
704/200.1   704/269
Int'l Classification
G10L   11/06   (20060101)  
Examiner
Priority Data
Aug 07, 2001 [CA] 2354755
USPTO Field of Search
704/269   704/270   704/205   704/275   381/314  
Related Patents
7398207 - Methods and systems for determining audio loudness levels in programming - Owned by Time Warner Interactive Video Group, Inc. (Stamford, CT)

An example of a method of correcting an audio level of a stored program asset comprises retrieving a stored program asset having audio encoded at a first loudness setting. Dialog of the audio of the asset is identified, a loudness of the dialog is determined and the determined loudness is compared to the first loudness setting. The asset is re-encoded at a second loudness setting corresponding to the determined loudness, if the first loudness setting and the second loudness are different by more than a predetermined amount. The determined loudness is preferably a DIALNORM of the dialog. The asset may be stored with the re-encoded loudness setting. The method may be applied to programs as they are being received from a source, as well. Aspects of the method may also be applied to programs to be provided by a source. Systems are also disclosed.

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