Electronic apparatus, control method thereof and computer program product using the same

Patent metadata

Field	Value
Publication number	US-2019052986-A1
Application number	US-201816032472-A
Country	US
Kind code	A1
Filing date	Jul 11, 2018
Priority date	Aug 11, 2017
Publication date	Feb 14, 2019
Grant date	—

Abstract

An electronic apparatus includes a memory configured to store instructions; and a processor configured to execute the instructions to: separate an input audio signal into a plurality of channel signals; identify a gain corresponding to a feature difference between a first channel signal, from among the plurality of channel signals, and a second channel signal, from among the plurality of channel signals; and adjust relative ratios among a plurality of output signals according to the identified gain to generate an output audio signal in which a sound image is varied.

First claim

What is claimed is:

1 . An electronic apparatus comprising:
a signal receiver configured to receive an audio signal; an output interface configured to be output an audio signal; and a processor configured to:
separate the received audio signal into a plurality of channel signals;
identify a gain corresponding to a feature difference between a first channel signal, from among the plurality of channel signals, and a second channel signal, from among the plurality of channel signals; and
control to adjust relative ratios among a plurality of output signals according to the identified gain to change a sound image of the audio signal outputted through the output interface.

2 . The electronic apparatus according to claim 1 , wherein the processor is further configured to adjust a relative ratio between the first channel signal and the second channel signal generated from the separated plurality of channel signals.

3 . The electronic apparatus according to claim 1 , wherein the feature difference comprises a phase difference between the first channel signal and the second channel signal.

4 . The electronic apparatus according to claim 1 , wherein the processor is further configured to:
convert the first channel signal and the second channel signal into frequency domains; and identify a feature difference between the first channel signal and the second channel signal, converted into the frequency domains.

5 . The electronic apparatus according to claim 4 , wherein the processor is further configured to identify the feature difference according to a plurality of frequency sub-bands for the first channel signal and the second channel signal converted into the frequency domains.

6 . The electronic apparatus according to claim 1 , wherein the processor is further configured to identify the feature difference based on low bandpass signals of the first channel signal and the second channel signal.

7 . The electronic apparatus according to claim 1 , wherein the feature difference comprises a size difference or a time difference between the first channel signal and the second channel signal.

8 . The electronic apparatus according to claim 1 , wherein the outputted audio signal comprises more channel signals than the audio signal received through the signal receiver.

9 . The electronic apparatus according to claim 1 , wherein the processor is further configured to identify the feature difference according to a plurality of time sections of the received audio signal.

10 . The electronic apparatus according to claim 1 , further comprising a display configured to display an image,
wherein the received audio signal corresponds to an image content displayed on the display.

11 . A control method of an electronic apparatus comprising:
receiving an audio signal; separating the received audio signal into a plurality of channel signals; identifying a gain corresponding to a feature difference between a first channel signal, from among the plurality of channel signals, and a second channel signal, from among the plurality of channel signals; adjusting relative ratios among a plurality of output signals according to the identified gain for generating an audio signal in which a sound image is varied; and outputting the generated audio signal.

12 . The method according to claim 11 , wherein the adjusting comprises adjusting a relative ratio between the first channel signal and the second channel signal generated from the separated plurality of channel signals.

13 . The method according to claim 11 , wherein the feature difference comprises a phase difference between the first channel signal and the second channel signal.

14 . The method according to claim 11 , further comprising:
converting the first channel signal and the second channel signal into frequency domains; and identifying a feature difference between the first channel signal and the second channel signal, converted into the frequency domains.

15 . The method according to claim 14 , wherein the identifying the feature difference comprises identifying the feature difference according to a plurality of frequency sub-bands for the first channel signal and the second channel signal converted into the frequency domains.

16 . The method according to claim 11 , further comprising identifying the feature difference based on low bandpass signals of the first channel signal and the second channel signal.

17 . The method according to claim 11 , wherein the feature difference comprises a size difference or a time difference between the first channel signal and the second channel signal.

18 . The method according to claim 11 , wherein the outputted audio signal comprises more channel signals than the received audio signal.

19 . The method according to claim 11 , further comprising identifying the feature difference according to a plurality of time sections of the received audio signal.

20 . A non-transitory computer readable recording medium having stored thereon a program which, when executed, causes an electronic apparatus to perform a method comprising:
separating an input audio signal into a plurality of channel signals; identifying a gain corresponding to a feature difference between a first channel signal, from among the plurality of channel signals, and a second channel signal, from among the plurality of channel signals; and adjusting relative ratios among a plurality of output signals according to the identified gain for generating an output audio signal in which a sound image is varied.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Yoon-Jae
• Lee Woo-Jung
• Song Young-Suk
• Park Hae-Kwang

Classifications

• G10L19/008

  Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing · CPC title

• H04S1/002 Primary

  Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution (control circuits for electronic adaptation of the sound field H04S7/30) · CPC title

• H04H20/89

  using three or more audio channels, e.g. triphonic or quadraphonic · CPC title

• H04S7/307

  Frequency adjustment, e.g. tone control (H04S7/301 takes precedence) · CPC title

• H04S5/005 Primary

  of the pseudo five- or more-channel type, e.g. virtual surround · CPC title