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4-Traders Homepage  >  Equities  >  KOREA EXCHANGE  >  Samsung Electronics Co Ltd    005930   KR7005930003

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Samsung Electronics : Patent Issued for Audio Providing Apparatus and Audio Providing Method (USPTO 9774973)

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10/05/2017 | 11:25pm CET

By a News Reporter-Staff News Editor at Electronics Newsweekly -- SAMSUNG ELECTRONICS CO., LTD. (Suwon-si, KR) has been issued patent number 9774973, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventors are Chon, Sang-bae (Suwon-si, KR); Kim, Sun-min (Suwon-si, KR); Park, Jae-ha (Suwon-si, KR); Son, Sang-mo (Suwon-si, KR); Jo, Hyun (Suwon-si, KR); Chung, Hyun-joo (Seoul, KR).

This patent was filed on December 4, 2013 and was published online on September 26, 2017.

From the background information supplied by the inventors, news correspondents obtained the following quote: "Apparatuses and methods consistent with exemplary embodiments relate to an audio providing apparatus and method, and more particularly, to an audio providing apparatus and method that render and output audio signals having various formats to be optimal for an audio reproduction system.

"At present, various audio formats are being used in the multimedia market. For example, an audio providing apparatus provides various audio formats from a two-channel audio format to a 22.2-channel audio format. In particular, an audio system may use channels such as 7.1 channel, 11.1 channel, and 22.2 channel for expressing a sound source in a three-dimensional space.

"However, most audio signals have a 2.1-channel format or a 5.1-channel format and have a limitation in expressing a sound source in a three-dimensional space. Also, it is difficult to setup, in homes, an audio system for reproducing 7.1-channel, 11.1-channel, and 22.2-channel audio signals.

"Therefore, there is a need for a method of actively rendering an audio signal according to a format of an input signal and an audio reproducing system."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventors' summary information for this patent: "Aspects of one or more exemplary embodiments provide an audio providing method and an audio providing apparatus using the method, which optimize a channel audio signal for a listening environment by up-mixing or down-mixing the channel audio signal and which render an object audio signal according to geometric information to provide a sound image optimized for the listening environment.

"According to an aspect of an exemplary embodiment, there is provided an audio providing apparatus including: an object renderer configured to render an object audio signal based on geometric information regarding the object audio signal; a channel renderer configured to render an audio signal having a first channel number into an audio signal having a second channel number; and a mixer configured to mix the rendered object audio signal with the audio signal having the second channel number.

"The object renderer may include: a geometric information analyzer configured to convert the geometric information regarding the object audio signal into three-dimensional (3D) coordinate information; a distance controller configured to generate distance control information, based on the 3D coordinate information; a depth controller configured to generate depth control information, based on the 3D coordinate information; a localizer configured to generate localization information for localizing the object audio signal, based on the 3D coordinate information; and a renderer configured to render the object audio signal, based on the generated distance control information, the generated depth control information, and the generated localization information.

"The distance controller may be configured to: acquire a distance gain of the object audio signal; as a distance of the object audio signal increases, decrease the distance gain of the object audio signal; and as the distance of the object audio signal decreases, increase the distance gain of the object audio signal.

"The depth controller may be configured to acquire a depth gain, based on a horizontal projection distance of the object audio signal; and the depth gain is expressed as a sum of a negative vector and a positive vector or is expressed as a sum of the negative vector and a null vector.

"The localizer may be configured to acquire a panning gain for localizing the object audio signal according to a speaker layout of the audio providing apparatus.

"The renderer may be configured to render the object audio signal into a multi-channel signal, based on the acquired depth gain, the acquired panning gain, and the acquired distance gain of the object audio signal.

"The object renderer may be configured to, when a plurality of object audio signals is received, acquire a phase difference between object audio signals having a correlation among the received plurality of object audio signals and to move one of the plurality of object audio signals by the acquired phase difference to combine the plurality of object audio signals.

"The object renderer may include: a virtual filter configured to correct spectral characteristics of the object audio signal and to add virtual elevation information to the object audio signal, when the audio providing apparatus reproduces audio using a plurality of speakers having a same elevation; and a virtual renderer configured to render the object audio signal, based on the virtual elevation information supplied by the virtual filter.

"The virtual filter may have a tree structure including a plurality of stages.

"The channel renderer may be configured to, when a layout of the audio signal having the first channel number is a two-dimensional (2D) layout, up-mix the audio signal having the first channel number to the audio signal having the second channel number greater than the first channel number; and a layout of the audio signal having the second channel number may be a 3D layout having elevation information that differs from elevation information regarding the audio signal having the first channel number.

"The channel renderer may be configured to, when a layout of the audio signal having the first channel number is a 3D layout, down-mix the audio signal having the first channel number to the audio signal having the second channel number less than the first channel number; and a layout of the audio signal having the second channel number may be a 2D layout where a plurality of channels have a same elevation component.

"At least one of the object audio signal and the audio signal having the first channel number may include information for determining whether to perform virtual 3D rendering on a specific frame.

"The channel renderer may be configured to acquire a phase difference between a plurality of audio signals having a correlation in an operation of rendering the audio signal having the first channel number into the audio signal having the second channel number, and to move one of the plurality of audio signals by the acquired phase difference to combine the plurality of audio signals.

"The mixer may be configured to acquire a phase difference between a plurality of audio signals having a correlation while mixing the rendered object audio signal with the audio signal having the second channel number, and to move one of the plurality of audio signals by the acquired phase difference to combine the plurality of audio signals.

"The object audio signal may include at least one of an identification (ID) and type information regarding the object audio signal for enabling a user to select the object audio signal.

"According to an aspect of another exemplary embodiment, there is provided an audio providing method including: rendering an object audio signal based on geometric information regarding the object audio signal; rendering an audio signal having a first channel number into an audio signal having a second channel number; and mixing the rendered object audio signal with the audio signal having the second channel number.

"The rendering the object audio signal may include: converting the geometric information regarding the object audio signal into three-dimensional (3D) coordinate information; generating distance control information, based on the 3D coordinate information; generating depth control information, based on the 3D coordinate information; generating localization information for localizing the object audio signal, based on the 3D coordinate information; and rendering the object audio signal, based on the generated distance control information, the generated depth control information, and the generated localization information.

"The generating the distance control information may include: acquiring a distance gain of the object audio signal; decreasing the distance gain of the object audio signal as a distance of the object audio signal increases; and increasing the distance gain of the object audio signal as the distance of the object audio signal decreases.

"The generating the depth control information may include acquiring a depth gain, based on a horizontal projection distance of the object audio signal; and the depth gain may be expressed as a sum of a negative vector and a positive vector or is expressed as a sum of the negative vector and a null vector.

"The generating the localization information may include acquiring a panning gain for localizing the object audio signal according to a speaker layout of an audio providing apparatus.

"The rendering the object audio signal based on the generated distance control information, the generated depth control information, and the generated localization information may include rendering the object audio signal to a multi-channel signal, based on the acquired depth gain, the acquired panning gain, and the acquired distance gain of the object audio signal.

"The rendering the object audio signal may include, when a plurality of object audio signals is received: acquiring a phase difference between object audio signals having a correlation among the received plurality of object audio signals; and moving one of the plurality of object audio signals by the acquired phase difference to combine the plurality of object audio signals.

"The rendering the object audio signal may include, when an audio providing apparatus reproduces audio by using a plurality of speakers having a same elevation: correcting spectral characteristics of the object audio signal and adding virtual elevation information to the object audio signal; and rendering the object audio signal, based on the virtual elevation information supplied by the correcting.

"The virtual elevation information may be added to the object audio signal by using a virtual filter which has a tree structure including a plurality of stages.

"The rendering the audio signal having the first channel number into the audio signal having the second channel number may include, when a layout of the audio signal having the first channel number is a two-dimensional (2D) layout, up-mixing the audio signal having the first channel number to the audio signal having the second channel number greater than the first channel number; and a layout of the audio signal having the second channel number may be a 3D layout having elevation information that differs from elevation information regarding the audio signal having the first channel number.

"The rendering the audio signal having the first channel number to the audio signal having the second channel number may include, when a layout of the audio signal having the first channel number is a 3D layout, down-mixing the audio signal having the first channel number to the audio signal having the second channel number less than the first channel number; and a layout of the audio signal having the second channel number may be a 2D layout where a plurality of channels have a same elevation component.

"At least one of the object audio signal and the audio signal having the first channel number may include information for determining whether to perform virtual 3D rendering on a specific frame.

"According to an aspect of another exemplary embodiment, there is provided an audio providing apparatus including: a de-multiplexer configured to demultiplex an audio signal into an object audio signal and a channel audio signal; an object renderer configured to render an object audio signal based on geometric information regarding the object audio signal; and a mixer configured to mix the rendered object audio signal with the channel audio signal.

"The audio providing apparatus may further include: a channel renderer configured to render the channel audio signal having a first channel number into a channel audio signal having a second channel number, wherein the mixer may be configured to mix the rendered object audio signal with the channel audio signal having the second channel number.

"The object renderer may include: a geometric information analyzer configured to convert the geometric information regarding the object audio signal into three-dimensional (3D) coordinate information; a distance controller configured to generate distance control information, based on the 3D coordinate information; a depth controller configured to generate depth control information, based on the 3D coordinate information; a localizer configured to generate localization information for localizing the object audio signal, based on the 3D coordinate information; and a renderer configured to render the object audio signal, based on the generated distance control information, the generated depth control information, and the generated localization information.

"The distance controller may be configured to: acquire a distance gain of the object audio signal; as a distance of the object audio signal increases, decrease the distance gain of the object audio signal; and as the distance of the object audio signal decreases, increase the distance gain of the object audio signal.

"The depth controller may be configured to acquire a depth gain, based on a horizontal projection distance of the object audio signal; and the depth gain may be expressed as a sum of a negative vector and a positive vector or is expressed as a sum of the negative vector and a null vector.

"The localizer may be configured to acquire a panning gain for localizing the object audio signal according to a speaker layout of the audio providing apparatus.

"The renderer may be configured to render the object audio signal into a multi-channel signal, based on the acquired depth gain, the acquired panning gain, and the acquired distance gain of the object audio signal.

"The object renderer may be configured to, when a plurality of object audio signals is received, acquire a phase difference between object audio signals having a correlation among the received plurality of object audio signals and to move one of the plurality of object audio signals by the acquired phase difference to combine the plurality of object audio signals.

"According to an aspect of another exemplary embodiment, there is provided a non-transitory computer readable recording medium having recorded thereon a program executable by a computer for performing the above method.

"According to aspects of one or more exemplary embodiments, an audio providing apparatus may reproduce audio signals having various formats to be optimal for an output audio system."

For the URL and additional information on this patent, see: Chon, Sang-bae; Kim, Sun-min; Park, Jae-ha; Son, Sang-mo; Jo, Hyun; Chung, Hyun-joo. Audio Providing Apparatus and Audio Providing Method. U.S. Patent Number 9774973, filed December 4, 2013, and published online on September 26, 2017. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9774973.PN.&OS=PN/9774973RS=PN/9774973

Keywords for this news article include: Consumer Electronics, SAMSUNG ELECTRONICS CO. LTD.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2017, NewsRx LLC

(c) 2017 NewsRx LLC, source Technology Newsletters

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