Apparatus and method of reducing noise and audio playing apparatus with non-magnet speaker

An audio apparatus is provided. The audio apparatus includes an input unit (510) configured to receive an audio signal containing noise; a period estimation unit (520) configured to estimate a period of a noise pattern in the audio signal; a noise reducer (530) configured to subtract and remove the...

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Bibliographic Details
Main Authors YOUNG-SANG LEE, ARAN CHA, YOON-JAE LEE, GUN-WOO LEE, SANGUL KO
Format Patent
LanguageEnglish
Published 15.04.2015
Subjects
DEAF-AID SETS
DIAGNOSIS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
MEDICAL OR VETERINARY SCIENCE
PUBLIC ADDRESS SYSTEMS
SURGERY
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Summary:An audio apparatus is provided. The audio apparatus includes an input unit (510) configured to receive an audio signal containing noise; a period estimation unit (520) configured to estimate a period of a noise pattern in the audio signal; a noise reducer (530) configured to subtract and remove the noise pattern from the audio signal in a frequency domain by using the estimated period of the noise pattern; a noise updater (540) configured to update the noise pattern according to a change in amplitude of the noise; and an output unit (550) configured to output the audio signal obtained by removing the noise pattern.
Bibliography:Application Number: CN201410525793