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US 8,559,652 B2Granted
Apparatus and method for removing white noise in portable terminal
AssigneeSamsung Electronics Co., Ltd.
InventorJung-Eun Hwang
Life of this patent
Estimating the term…
Abstract
A method and an apparatus for removing white noise in a portable terminal are provided. The method for removing the white noise in the portable terminal includes measuring a volume variation of a voice signal output from a power amplifier; detecting a frequency band including white noise using the measured volume variation; and removing signals of the detected frequency band in the voice signal before output to speaker.
Claims3
A method for removing white noise in a portable terminal, comprising:
- detecting a volume variation, at each of a plurality of frequencies, of a voice signal output from a power amplifier;
- detecting a frequency band of the voice signal comprising white noise to be removed, by comparing the volume variation during a certain time interval with a preset threshold value, and when the volume variation is less than the preset threshold, detecting a corresponding frequency band of that volume variation as the frequency band comprising the white noise to be removed;
- and
- removing signals that match the detected frequency band from the voice signal before output to a speaker.
1 more element
An apparatus for removing white noise in a portable terminal, comprising:
- a noise band detector for measuring a volume variation, at each of a plurality of frequencies, of a voice signal output from a power amplifier, and detecting a frequency band of the voice signal comprising white noise to be removed by comparing the volume variation during a certain time interval with a preset threshold value, and when the volume variation is less than the preset threshold, detecting a corresponding frequency band of that volume variation as the frequency band comprising the white noise to be removed and
- a noise remover for removing signals of the detected frequency band from the voice signal before output to a speaker.
A portable terminal comprising:
- an apparatus for removing white noise, the apparatus including:
- a noise band detector for measuring a volume variation, at each of a plurality of frequencies, of a voice signal output from a power amplifier, and detecting a frequency band of the voice signal comprising white noise to be removed by comparing the volume variation during a certain time interval with a preset threshold value, and when the volume variation is less than the preset threshold, detecting a corresponding frequency band of that volume variation as the frequency band comprising the white noise to be removed;
- and
- a noise remover for removing signals of the detected frequency band from the voice signal before output to a speaker.
1 more element
Dependencies are inferred from the claim text.