Adaptive time-based noise suppression

Systems, an apparatus, and methods are provided for mitigating noise associated with an audio signal. A system (100) for mitigating noise associated with an audio signal includes an estimator module (108). The estimator module determines an estimated level of noise associated with the audio signal....

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Bibliographic Details
Main Author BEHBOODIAN ALI,BOILLOT MARC A.,DESAI PRATIK V.,WONG CHIN P
Format Patent
LanguageEnglish
Published 24.10.2007
Subjects
BANDAGES, DRESSINGS OR ABSORBENT PADS
DEAF-AID SETS
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
HUMAN NECESSITIES
HYGIENE
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
MEDICAL OR VETERINARY SCIENCE
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
PROSTHESES
PUBLIC ADDRESS SYSTEMS
TELEPHONIC COMMUNICATION
TREATMENT OR PROTECTION OF EYES OR EARS
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Summary:Systems, an apparatus, and methods are provided for mitigating noise associated with an audio signal. A system (100) for mitigating noise associated with an audio signal includes an estimator module (108). The estimator module determines an estimated level of noise associated with the audio signal. The system also includes an expander module (110). The expander module causes an attenuation of the audio signal if a level of the audio signal is below a signal threshold. The expander module is adaptively tunable so that the attenuation caused (606) by the expander module is based upon the level of noise estimated (602) by the estimator module.
Bibliography:Application Number: CN200580039383