Audio reproduction method and apparatus with auto volume control function
AssigneeSamsung Electronics Co., Ltd.
InventorChi-ho Jung
Life of this patent
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Abstract
An audio reproduction method and apparatus, in which an audio volume is automatically controlled based on audio energy and human auditory characteristics. The audio reproduction method includes splitting a reproduction audio signal into audio signals corresponding to a plurality of frequency bands, extracting audio energy for each of the frequency bands, and comparing the audio energy for each of the frequency bands with a predetermined threshold and controlling the volume of the audio signal corresponding to each of the frequency bands.
Claims29
An audio reproduction method comprising:
- splitting a reproduction audio signal into audio signals corresponding to a plurality of frequency bands;
- extracting audio energy for each of the frequency bands;
- and
- comparing the audio energy for each of the frequency bands with a predetermined threshold to control a volume of an input audio signal corresponding to each of the frequency bands.
An audio reproduction apparatus comprising:
- a band splitting unit to split a reproduction audio signal into audio signals corresponding to a plurality of frequency bands;
- an audio monitoring unit to accumulate reproduced audio energy for each of the frequency bands, comparing the audio energy for each of the frequency bands with a predetermined threshold, and to generate volume control information;
- and
- a volume control unit to control a volume of an input audio signal corresponding to each of the frequency bands according to the volume control information generated by the audio monitoring unit.
An audio volume control method comprising:
- presetting a volume step and a volume control value for each frequency band based on human auditory characteristics;
- splitting an audio signal into audio signals corresponding to a plurality of frequency bands;
- determining the volume control value preset for each frequency band according to an input volume value;
- controlling the audio volume for each of the frequency bands split according to the volume control value determined for each of the frequency bands;
- and
- synthesizing the split audio signals corresponding to the frequency bands.
An audio volume control apparatus comprising:
- a storage unit to store a volume control value for each frequency band corresponding to a volume step based on human auditory characteristics;
- a band splitting unit to split an audio signal into audio signals corresponding to a plurality of frequency bands;
- a volume processing unit to determine the volume control value for each frequency band, stored in the storage unit, according to an input volume value;
- a sub volume control unit to control the volume of each of the split audio signals according to the volume control value determined for each of the frequency bands by the volume processing unit;
- and
- a band synthesis unit to synthesize the split audio signals corresponding to the frequency bands whose volumes are controlled by the sub volume control unit.
An audio volume control apparatus to reproduce a reproduction audio signal from an input audio signal, comprising:
- a volume control unit to control a plurality of frequency bands of the input audio signal according to corresponding ones of characteristics of the respective frequency bands of the reproduction audio signal.
Dependencies are inferred from the claim text.