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 LEE, GUN-WOO, CHA, ARAN, KO, SANGUL, LEE, YOON-JAE, LEE, YOUNG-SANG
Format Patent
LanguageEnglish
French
German
Published 15.04.2015
Subjects
ACOUSTICS
ACOUSTICS NOT OTHERWISE PROVIDED FOR
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL
MUSICAL INSTRUMENTS
PHYSICS
SOUND-PRODUCING DEVICES
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
TESTING
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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: EP20140188214