KR101695840B1 - System for automatic controlling digital tv volume based on loudness and the method thereof - Google Patents

System for automatic controlling digital tv volume based on loudness and the method thereof Download PDF

Info

Publication number
KR101695840B1
KR101695840B1 KR1020150162181A KR20150162181A KR101695840B1 KR 101695840 B1 KR101695840 B1 KR 101695840B1 KR 1020150162181 A KR1020150162181 A KR 1020150162181A KR 20150162181 A KR20150162181 A KR 20150162181A KR 101695840 B1 KR101695840 B1 KR 101695840B1
Authority
KR
South Korea
Prior art keywords
digital
sound
volume
noise
reverberation
Prior art date
Application number
KR1020150162181A
Other languages
Korean (ko)
Inventor
이상운
김정길
Original Assignee
남서울대학교 산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 남서울대학교 산학협력단 filed Critical 남서울대학교 산학협력단
Priority to KR1020150162181A priority Critical patent/KR101695840B1/en
Application granted granted Critical
Publication of KR101695840B1 publication Critical patent/KR101695840B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25808—Management of client data
    • H04N21/25841—Management of client data involving the geographical location of the client
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Graphics (AREA)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

The present invention relates to a system for automatically controlling a digital TV volume based on loudness and a method thereof. The present invention relates to a system for providing a user with a comfortable watching environment by individually controlling a volume channel of a digital TV according to a position of the user based on space information of a watching space, reverberant sound and noise generated in the watching space of the digital TV and the volume of the digital TV, and a method thereof. The system includes a sound measuring unit which measures sound through each microphone, a noise recognizing unit which recognizes noises, a reverberant sound estimating unit which estimates the reverberant sound of a specific microphone by removing a signal received in an adjacent microphone, a space information estimating unit which estimates the space information, and a control unit which controls the output of each sound channel.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system and a method for automatically controlling a volume of a digital TV based on loudness,

The present invention relates to a loudness-based digital TV volume control system and method, and more particularly, to a loudness-based digital TV volume control system that accurately measures noises and reverberations generated in a broadcast viewing space through a multi-channel microphone, And more particularly, to a system and method for controlling the volume of a digital TV optimized for the viewing space by automatically controlling the volume of the digital TV in consideration of spatial information of the viewing space.

Recently, as broadcasting technology has changed from analog to digital, the spread of digital TV is becoming common.

In addition, with the development of various media technologies such as broadcasting and movies, users are evolving into an environment capable of viewing various images and sounds regardless of the place and time. In particular, UHD, 3D and media convergence technologies are not simple media, And transmits the new experience and information to the user in cooperation with the multi-channel sound.

However, in the viewing environment of the digital TV, the user can be exposed to room noise (e.g., sound of a home appliance) including room noise, outdoor noise (automobile, train or human speech), and reverberation, The noise and the reverberation noise are factors that interfere with the comfortable watching of the user.

Also, the noise and the reverberation may cause the inconvenience that the user continuously adjusts the output volume in accordance with the increase / decrease of the noise and the reverberation to obtain a desired output volume from the sound output from the digital TV.

Accordingly, in order to solve the above problems, a system for automatically controlling the volume of the digital TV so that the user can comfortably watch the broadcast has been developed and implemented. In such a system, accurate measurement of the noise and estimation of the reverberation sound are essential.

However, in the conventional system, only the noise generated in the environment where the user watches the digital TV is measured only at the simple sound pressure level (SPL), and when the sound pressure level is over or below the predetermined sound pressure level, to be.

This is because the volume of the digital TV is controlled only by disregarding the distance and the relationship between the user and the digital TV, which limits the ability to provide an optimal viewing environment and is not applied flexibly according to various viewing environments of the user There is a drawback that it can not.

Therefore, in the present invention, the user considers the reverberation of the viewing space, the location of the user, the location of the digital TV, and the spatial information including the size of the viewing space, together with noise generated in the viewing space of the digital TV And a system and method for providing a comfortable viewing environment to the user by automatically controlling the volume of the digital TV.

Next, a brief description will be given of the prior arts that exist in the technical field of the present invention, and technical matters which the present invention intends to differentiate from the prior arts will be described.

Korean Patent No. 1289732 (Jan. 19, 2013) is a method of automatically adjusting a TV volume by recognizing an external sound signal, and is a sound signal received through a TV input device. A sound signal The present invention also relates to a method for automatically reducing or blocking a sound signal when the size of an external sound signal is equal to or greater than a threshold value.

The prior art has some similarities to the present invention in terms of technical features that automatically adjust the volume of the digital TV to provide convenience to the user when noise is generated in a space where the user watches the digital TV, The present invention can optimize the volume of the digital TV by automatically controlling the volume of the digital TV in consideration of not only the noise but also the space information including the size of the user, the digital TV and the viewing space, and the reverberation that may occur in the viewing space And the technical features that provide the loudness are not described or suggested.

Korean Unexamined Patent Application Publication No. 2005-0056426 (June 16, 2005) discloses a method for automatically controlling the volume of a TV, in which the viewing environment of the TV is detected using an optical sensor, and then the volume is automatically controlled A step of measuring a light amount of a space where the TV is provided by using an optical sensor, a step of comparing volume data and a measured light amount value by a preset light amount value to change the sound control curve according to the light amount value, And a method for automatically controlling the volume of a TV outputting a volume according to the set volume data.

The prior art has some similarities with the present invention in that it automatically controls the volume output from the TV according to the environment of the viewing space, whereas the present invention does not control the volume of the TV according to night and day The volume of the digital TV is automatically controlled for each sound channel in consideration of noise, residual sound, and spatial information of the viewing space generated in the viewing space for viewing the digital TV, thereby providing a pleasant viewing environment to the user The technical features of the invention are not described or suggested.

The present invention has been made in order to solve the above problems, and it is an object of the present invention to accurately measure the volume of a digital TV provided in various viewing environments, to consider the space information of the viewing environment, And it is an object of the present invention to provide a comfortable viewing environment and convenience to a user by automatically controlling the volume of the digital TV.

A loudness-based digital TV sound volume control system according to an embodiment of the present invention includes a sound volume measuring unit for measuring sound volume of a digital TV, a noise sounding unit for recognizing noise with a plurality of microphones, a reverberation sound from the plurality of microphones and the sound volume, And a spatial information measurement unit for measuring a viewing environment of the digital TV.

The volume measuring unit is independently operated for a plurality of sound channels output from the digital TV, and the plurality of sound channels and the microphone are paired to measure the volume and the noise.

The noise recognition unit may filter the sound component and noise component of each channel of the digital TV received from the microphone and output only the noise component for each channel.

Further, the reverberation sound estimator estimates a reverberation sound by removing a signal received from an adjacent microphone with respect to the specific microphone.

The spatial information measuring unit may measure a size of a viewing space in which a user views a digital TV and a position of the user and a digital TV digital.

The digital TV volume control system may further include a volume controller for receiving the measured volume, noise, reverberation, and viewing environment information and controlling the volume of the digital TV for each channel, The control is performed in proportion to the noise in consideration of the viewing environment including the size of the user, the digital TV, and the viewing space while suppressing an increase in sound.

According to another aspect of the present invention, there is provided a method for controlling loudness-based digital TV sound volume, the method comprising: measuring a volume of a digital TV; measuring a sound level of the digital TV; A reverberation sound estimating step of estimating a sound and a space information measuring step of measuring a viewing environment of the digital TV.

The volume measurement step may be performed independently of a plurality of sound channels output from the digital TV, and the plurality of sound channels and the microphone may be paired to measure the volume and the noise.

Also, the noise recognition step may include filtering a sound component and a noise component of each channel of the digital TV received by the microphone, and outputting only noise components for each channel.

In addition, the reverberation sound estimating step estimates the reverberation sound by removing a signal received from an adjacent microphone with respect to the specific microphone.

The spatial information measuring step measures a size of a viewing space in which the user views the digital TV, and measures the position of the user and the digital TV digital.

Further, the digital TV volume control method may further include a control step of controlling the volume of the digital TV according to the channel by receiving the measured volume, noise, reverberation, and viewing environment information, The control is performed in proportion to the noise in consideration of the viewing environment including the size of the user, the digital TV, and the viewing space while suppressing an increase in sound.

The present invention relates to a loudness-based digital TV volume automatic control system and method, and more particularly, to a loudness-based digital TV volume control system and method, The sound volume is automatically controlled for each sound channel, thereby providing a pleasant viewing environment to the user viewing the digital TV.

1 is a conceptual diagram for explaining a loudness-based digital TV volume automatic control system and a method thereof according to an embodiment of the present invention.
2 is a block diagram illustrating a configuration of a loudness-based digital TV volume automatic control system according to an embodiment of the present invention.
3 is a block diagram illustrating a configuration of a volume control unit in a loudness-based digital TV volume control system according to an exemplary embodiment of the present invention.
4 is a flowchart illustrating a procedure for automatically controlling the volume of the digital TV in the loudness-based digital TV volume automatic control system according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

1 is a conceptual diagram for explaining a loudness-based digital TV volume automatic control system and a method thereof according to an embodiment of the present invention.

A conventional digital TV volume automatic control system for measuring only the noise generated in an environment for viewing the digital TV and automatically controlling the volume of the digital TV according to the measured noise, Since the volume of the digital TV is controlled by ignoring the distance and the relationship between the user and the digital TV, accurate volume control of the digital TV is impossible.

Accordingly, in consideration of the noise generated in various viewing spaces for viewing the digital TV, as well as the viewing environment including the reverberation sound and the size of the user, the digital TV, and the viewing space, The present invention provides a system and a method for providing a pleasant viewing environment to a user by automatically controlling the volume of the digital TV so that the user can enjoy comfortable viewing.

1, the loudness-based digital TV volume automatic control system 100 is connected to a sound system (for example, the built-in sound system 210 or the external sound system 220) of the digital TV 200 The volume of the digital TV 200 input from the sound system 210 or 220 to the ITU-R BS.1770-3 specified by the ITU (International Telecommunication Union (ITU) Measure according to the standard.

In addition, the ITU-R BS.1770-3 standard specifies an algorithm capable of measuring a true-peak audio level and an accumulated level (Long Term Level) of an audio signal including a volume of a broadcast program and a voice signal, And a gating method for excluding a long silence section included in the audio signal from the sound volume measurement, and is applicable to mono, stereo and multi-channel audio signals. In addition, the standard uses a loudness-weighted relative to full scale (LKFS) as a measure of the volume.

Also, the volume measurement is performed independently for a plurality of sound channels output from the sound systems 210 and 220 of the digital TV 200.

The digital TV volume automatic control system 100 may further include a microphone 300 installed in a viewing space for viewing the digital TV 200 and a sound generated in the viewing space and a volume of the digital TV 200 And recognizes the noise.

Meanwhile, a beam-forming technique may be applied to the plurality of microphones 300 to estimate the position at which the noise is generated. Further, in order to more accurately measure the noise generated in the viewing space, an acoustic-optical signal-based noise measurement method may be additionally used in addition to the measurement method using the microphone 300. The acoustic-optical signal-based noise measurement method includes the steps of measuring the noise by analyzing a beam-forming pattern change of the optical signal by emitting the optical signal to a specific reflector through an equipment for outputting the optical signal, to be.

Also, the digital TV volume automatic control system 100 removes a reverberant sound signal received from an adjacent microphone 300 with respect to the specific microphone 300, and estimates a reverberation sound in the specific microphone 300.

A method of estimating the reverberation sound will be described in more detail. First, a signal Si output through a specific speaker is measured, and a signal Mi of a microphone installed around the speaker is measured. The signal Mi of the microphone will include ambient noise Ni and reverberation Ei in the signal component Si of the speaker. Therefore, when the signal Si of the speaker is removed from the signal Mi of the microphone, the noise Ni and the reverberant component Ei are calculated.

That is, the relationship Mi - Si = Ni + Ei is established. Here, the noise component Ni is generated only when noise is generated, and the reverberant component Ei is continuously detected by the corresponding microphone. Therefore, the reverberation component Ei can be continuously learned and estimated for the microphone and the speaker.

However, this is influenced by the speaker signal output from the adjacent speaker. Accordingly, the reverberant sound sensed by the microphone installed on the speaker is related to the reverberant sounds sensed by the microphone installed on the adjacent speaker, and the reverberant sound detected by the at least one microphone adjacent to the reverberant sound sensed by the specific microphone is removed, The reverberation sound of the microphone installed in the specific speaker is estimated.

Thus, the reverberant sound estimated from a specific microphone is used to adjust the volume of the speaker in addition to the noise. That is, the volume of the digital TV is increased until the reverberation reaches a specific level in comparison with the noise level (decibel), thereby allowing the viewer to adjust the volume within a range in which the viewer is not stressed. It suppresses this by providing stress to viewers.

In addition, the digital TV volume automatic control system 100 may control the size of a viewing space in which the user views the digital TV 200 using a plurality of cameras 400 installed in the viewing space, As shown in FIG.

On the other hand, the size of the viewing space refers to three-dimensional information including height, width and height of the viewing space.

The digital TV volume automatic control system 100 generates spatial coordinates of the user's location and the location of the digital TV 200 based on the measured spatial information, The location of the user and the spatial coordinates of the location of the digital TV 200 can be updated and stored in real time.

Also, the user may input and set the size of the viewing space through a user interface or an application (APP) provided by the digital TV volume automatic control system 100.

Also, the digital TV volume automatic control system 100 may automatically control the volume of the digital TV 200 in real time for each sound channel in consideration of the volume, noise, reverberation, and spatial information of the digital TV 200 So that it is possible to provide an optimal volume to the viewing space of the user.

In addition, the digital TV volume automatic control system 100 can track the position of the user in real time based on the generated spatial coordinates, and adjust the volume output from the plurality of sound channels according to the position of the user, It is possible to provide an optimum volume according to the viewing environment of the user by controlling each channel. For example, if the viewer (user) is located on the right side of the digital TV, the volume of the speaker is increased toward the corresponding position, and the volume of the speaker on the other side is decreased by a small amount.

Accordingly, unlike the conventional art in which only the noise of the viewing environment is measured and the volume of the digital TV is simply controlled by adding or subtracting the volume of the digital TV, the volume of the digital TV 200, the noise generated in the viewing space The reverberation sound, and the spatial information, it is possible to flexibly apply not only to the user's house but also to various venues including lecture theaters, train stations, auditoriums, or the like, and the volume can be accurately adjusted There is an advantage that a pleasant viewing environment can be provided.

2 is a block diagram illustrating a configuration of a loudness-based digital TV volume automatic control system according to an embodiment of the present invention.

2, the loudness-based digital TV volume automatic control system 100 receives the volume of the digital TV from the digital TV sound systems 210 and 220 and measures a level (volume magnitude) A sound level estimating unit 110 for receiving a signal from the plurality of microphones 300 and recognizing noise from the signals received from the plurality of microphones 300 and a reverberation sound estimating unit 120 for receiving signals from the plurality of microphones 300, A spatial information measuring unit 140 for automatically measuring spatial information on a viewing space of the digital TV from a plurality of cameras 400, a volume control unit 140 for automatically controlling the volume of the digital TV 200, A user interface unit 170 for providing a user interface to the user, and a memory 160. The user interface unit 170 may include a volume control unit 150,

The volume measuring unit 110 measures the volume of each channel output from the digital TV 200 in real time according to the ITU-BS.1770-3 standard, and provides the measured volume to the volume controller 150 in real time.

The sound volume may be output from an internal multi-channel sound system 210 provided in the digital TV 200 or an external multi-channel sound system 220 connected to the digital TV 200 by the user .

The volume measuring unit 110 may be connected to the multi-channel sound system 210 or 220 wirelessly or independently and may be connected to the digital TV 200 independently of a plurality of sound channels output from the digital TV 200, Is measured.

The noise reduction unit 120 receives signals from the plurality of microphones 300 and filters the sound components and noise components of each sound channel of the digital TV 200 to output only noise components for the respective sound channels.

Meanwhile, the plurality of microphones 300 may pair with the plurality of sound channels and collect signals including the volume output for each sound channel and the noise generated in the viewing space, and provide them to the sounding unit 120 . In addition, a position where the noise is generated can be estimated by applying a beam-forming technique to detect the direction in which the noise is received by the plurality of microphones 300.

The reason why the plurality of microphones 300 and the plurality of sound channels are paired is to measure the noise and reverberation for each of the plurality of sound channels. Accordingly, it is possible to provide a pleasant viewing environment to the user by controlling the volumes output from the plurality of sound channels according to the position, the noise, and the reverberation of the user.

In addition, a sound source-optical signal based noise measurement method may be additionally applied to the digital TV volume automatic control system 100 to more accurately measure the noise that may occur in the viewing environment.

The reverberation scoring unit 130 estimates a reverberation sound by removing a signal received from an adjacent microphone 300 with respect to the specific microphone 300, and the reverberation sound estimation is performed for each of the sound channels.

On the other hand, the reverberation means that the sound output from the digital TV 200 is reflected by an object in the viewing space, and the volume of the sound gradually decreases. And the sound is audibly sensed by the sound, which may cause the user to feel uncomfortable in viewing the digital TV 200.

The spatial information measuring unit 140 measures spatial information of a viewing space in which the user views the digital TV 200 and provides the spatial information to the volume controller 150.

In addition, the spatial information includes a size of the viewing space including a height, a horizontal length, and a vertical length of the viewing space, a position of the user in the viewing space, a position of the digital TV 200, or a combination thereof.

Meanwhile, the spatial information measurement unit 140 may represent the position of the user and the position of the digital TV 200 as spatial coordinates of the viewing space, and the spatial coordinates are stored in the memory 160. In addition, the spatial information measuring unit 140 may update and store the location of the user and the location of the digital TV 200 in real time according to an image received from the plurality of cameras 400 in real time. This allows the user to select the sound channel according to the position of the user and the digital TV 200 and to control the volume of the sound channel, respectively, thereby providing an optimum volume to the user's viewing space.

The size of the viewing space may be preset by the user through a user interface or an app provided by the digital TV volume automatic control system 100. [

Meanwhile, the spatial information can be measured using a stereo camera, a depth camera, or a combination thereof. In addition, it is also possible to model the viewing space using the three-dimensional information to perform sound setting optimal to the viewing space.

Also, the volume control unit 150 receives information on the viewing environment including the volume, noise, reverberation, and spatial information measured for each of the sound channels, selects at least one sound channel to be controlled, ).

Also, the volume control unit 150 may suppress the increase of the estimated reverberation, and may further reduce the noise level of the digital TV 200 in consideration of spatial information including the position of the user, the position of the digital TV 200, And the volume is controlled in proportion to each sound channel.

In addition, the volume control unit 150 may store the volume of the digital TV 200 in the memory 160 when the user watches the digital TV 200 and terminates the volume. Thereafter, when the user turns on the digital TV 200 to watch the digital TV 200, the volume controller 150 controls the volume of the user's viewing environment (e.g., noise, reverberation sound, The digital TV 200 can appropriately control the volume of the digital TV 200 according to the spatial information.

This is because, even if the volume of the digital TV 200 is set to be excessively high or low in consideration of the noise generated in the viewing environment at the end of the digital TV 200, .

In addition, the memory 160 stores the size of the viewing space previously set by the user, space coordinates of the user's location, space coordinates of the location of the digital TV 200, And stores a mapping table for each microphone 300.

3 is a block diagram illustrating a configuration of a volume control unit in a loudness-based digital TV volume control system according to an exemplary embodiment of the present invention.

As shown in FIG. 3, the volume controller 150 may include a control signal generator 151 for generating a control signal for controlling the volume of the digital TV 200.

The control signal generating unit 151 may generate a control signal for each sound channel measured by the sound level measuring unit 110, noise information for each sound channel recognized by the sound level determining unit 120, And the spatial information measured by the spatial information measurement unit 140, and generates a control signal for each acoustic channel to control the digital TV 200 according to the sound channel, As shown in FIG.

Also, the control signal generator 151 refers to the mapping table to select a sound channel mapped to the microphone 300 having a relatively high noise and reverberation, thereby increasing the volume of the sound channel, It is possible to select a sound channel mapped to the microphone 300 having a relatively low sound level to generate a control signal for reducing the volume of the sound channel.

The control signal generator 151 generates a control signal for controlling each of the sound channels according to the position of the user changing in real time by referring to the spatial coordinates of the user's location updated and stored in real time, And controls each of the sound channels so as to provide an optimal sound to the user.

For example, it is possible to select a sound channel that is relatively close to the user's movement, thereby reducing the volume of the corresponding sound channel or increasing the volume of the sound channel that is relatively far away.

Meanwhile, the volume of the digital TV 200 is automatically controlled in real time by considering the sound measurement value, the noise information, the reverberation sound information, and the spatial information for each channel through the sound control unit 150, It is possible to provide the volume of the digital TV 200 optimized for the space.

4 is a flowchart illustrating a procedure for automatically controlling the volume of the digital TV in the loudness-based digital TV volume automatic control system according to an embodiment of the present invention.

4, a procedure for automatically controlling the volume of the digital TV 200 by the digital TV volume automatic control system 100 is first performed by the volume measurement unit 110, The sound volume output from the sound channel is measured in real time for each sound channel (S110).

Also, the volume measuring unit 110 measures the volume of the digital TV 200 according to the ITU-R BS.1770-3 standard defined by the ITU as described above.

Next, a noise generated in a viewing space for viewing the digital TV 200 from the signals received from the plurality of microphones 300 through the noise reduction unit 120 is recognized for each of the sound channels (S120).

On the other hand, the noise may be caused by environmental noise (for example, sound generated from a home appliance or an electronic device and human speech) in the viewing space, and surrounding environment occurring outside the room including interlayer noise, train, automobile, It includes noise.

The volume measuring unit 110 may be independently operated for a plurality of sound channels output from the digital TV 200. The plurality of sound channels and the plurality of microphones 300 may be paired, Measure the noise.

Next, the reverberation sound between the microphones 300 installed in the viewing space is estimated through the reverberation sounding unit 130.

Also, the reverberation is estimated by removing a signal received from a microphone 300 adjacent to the specific microphone 300, and is estimated for all the microphones 300.

Next, spatial information of the viewing space is estimated through the spatial information measuring unit 140 (S140).

The spatial information measuring unit 140 may measure spatial information of the viewing space using a three-dimensional room modeling technique using a plurality of images received from a plurality of cameras 400 installed in the viewing space.

The space information includes a size of a viewing space, a location of the user, and a location of a digital TV, and the size may be directly input by the user.

Next, the volume control unit 150 controls the volume of each of the sound channels based on the measured volume, noise, reverberation, and spatial information for each of the sound channels (S150).

As described above, the automatic loudness-based digital TV volume control system and method according to the present invention can be used not only to control the volume of the digital TV 200 by simply measuring noise, but also to control the volume, reverberation, The volume of the digital TV 200 is automatically controlled in real time by comprehensively considering the spatial information on the environment so that the user can provide the optimum volume to the viewing space for the user to view the broadcast, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention.

100: Loudness-based digital TV volume automatic control system
110: volume measuring unit 120:
130: reverberation scoring unit 140: spatial information measuring unit
150: volume control unit 151: control signal generation unit
160: memory 170: user interface unit
200: Digital TV 210: Built-in sound system
220: External sound system

Claims (12)

A loudspeaker comprising: a loudness measuring unit for measuring a loudness of each of a plurality of sound channels output from an acoustic system of a digital TV,
A noise extracting unit for recognizing noise by filtering a sound component and a noise component of each sound channel of the digital TV from a plurality of microphones installed in a viewing space for viewing the digital TV to output only noise components for each sound channel;
A reverberation extractor for estimating a reverberation sound of the specific microphone by removing a signal received from an adjacent one of the plurality of microphones;
A spatial information measuring unit for measuring spatial information including a size of the viewing space and a position of a user and a digital TV using a plurality of images received from a plurality of cameras installed in a viewing space for viewing the digital TV; And
The volume of the digital TV is controlled for each sound channel by receiving the measured volume, noise, reverberation, and spatial information of the viewing space. The volume of the digital TV is proportional to the noise while suppressing the increase of the reverberation And a control unit for controlling the output of each sound channel based on the output of the control unit. delete delete The method according to claim 1,
The estimation of the reverberation may be performed by,
The signal Mi of the microphone is measured by measuring a signal Si output from a specific speaker through a specific sound channel and measuring a signal Mi of an adjacent microphone installed around the speaker, (Ni) and the reverberation (Ei) components are included in the signal Mi of the microphone because the signal Si of the speaker includes the ambient noise Ni and the reverberant Ei. (Ni) component is generated only when noise is generated, and the reverberation (Ei) component is continuously detected by the corresponding microphone, so that the reverberation (Ni) Wherein the Ei component is performed by continuously learning and estimating the microphone and the speaker. The method according to claim 1,
Wherein the size of the viewing space is three-dimensional information including height, width, and length of the viewing space. delete A loudness measuring step of measuring a loudness of each microphone by pairing with a microphone independently of a plurality of sound channels output from a sound system of a digital TV;
A sound recognition step of recognizing noise by filtering only the noise components of each sound channel by filtering sound components and noise components for each sound channel of the digital TV from a plurality of microphones installed in a viewing space for viewing the digital TV, ;
A reverberation sound estimation step of estimating a reverberation sound of the specific microphone by removing a signal received from an adjacent one of the plurality of microphones;
A spatial information measurement step of measuring spatial information including a size of the viewing space and a location of a user and a digital TV using a plurality of images received from a plurality of cameras installed in a viewing space for viewing the digital TV; And
The volume of the digital TV is controlled for each sound channel by receiving the measured volume, noise, reverberation, and spatial information of the viewing space. The volume of the digital TV is proportional to the noise while suppressing the increase of the reverberation And controlling the output of each of the plurality of sound channels based on the control signal. delete delete The method of claim 7,
The estimation of the reverberation may be performed by,
The signal Mi of the microphone is measured by measuring a signal Si output from a specific speaker through a specific sound channel and measuring a signal Mi of an adjacent microphone installed around the speaker, (Ni) and the reverberation (Ei) components are included in the signal Mi of the microphone because the signal Si of the speaker includes the ambient noise Ni and the reverberant Ei. (Ni) component is generated only when noise is generated, and the reverberation (Ei) component is continuously detected by the corresponding microphone, so that the reverberation (Ni) And the Ei component is continuously learned and estimated for the microphone and the speaker. The method of claim 7,
Wherein the size of the viewing space is three-dimensional information including height, width, and length of the viewing space. delete
KR1020150162181A 2015-11-19 2015-11-19 System for automatic controlling digital tv volume based on loudness and the method thereof KR101695840B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150162181A KR101695840B1 (en) 2015-11-19 2015-11-19 System for automatic controlling digital tv volume based on loudness and the method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150162181A KR101695840B1 (en) 2015-11-19 2015-11-19 System for automatic controlling digital tv volume based on loudness and the method thereof

Publications (1)

Publication Number Publication Date
KR101695840B1 true KR101695840B1 (en) 2017-01-13

Family

ID=57835471

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150162181A KR101695840B1 (en) 2015-11-19 2015-11-19 System for automatic controlling digital tv volume based on loudness and the method thereof

Country Status (1)

Country Link
KR (1) KR101695840B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102000748B1 (en) 2018-02-14 2019-07-16 주식회사 곰앤컴퍼니 Volume control method and system for continuous playback of multiple video files
US10778929B2 (en) 2019-07-30 2020-09-15 Lg Electronics Inc. Volume adjusting device and adjusting method thereof
WO2022055294A1 (en) * 2020-09-10 2022-03-17 삼성전자주식회사 Display apparatus and control method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050000085A (en) * 2003-06-23 2005-01-03 주식회사 대우일렉트로닉스 Television for controlling volume by environment noise
JP2009124454A (en) * 2007-11-15 2009-06-04 Nippon Telegr & Teleph Corp <Ntt> Echo elimination method, device, program, and recording medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050000085A (en) * 2003-06-23 2005-01-03 주식회사 대우일렉트로닉스 Television for controlling volume by environment noise
JP2009124454A (en) * 2007-11-15 2009-06-04 Nippon Telegr & Teleph Corp <Ntt> Echo elimination method, device, program, and recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102000748B1 (en) 2018-02-14 2019-07-16 주식회사 곰앤컴퍼니 Volume control method and system for continuous playback of multiple video files
US10778929B2 (en) 2019-07-30 2020-09-15 Lg Electronics Inc. Volume adjusting device and adjusting method thereof
WO2022055294A1 (en) * 2020-09-10 2022-03-17 삼성전자주식회사 Display apparatus and control method thereof

Similar Documents

Publication Publication Date Title
RU2735652C2 (en) Spatial audio processing
KR102008771B1 (en) Determination and use of auditory-space-optimized transfer functions
JP5857071B2 (en) Audio system and operation method thereof
WO2018149275A1 (en) Method and apparatus for adjusting audio output by speaker
US20230058952A1 (en) Audio apparatus and method of operation therefor
JP2016509429A (en) Audio apparatus and method therefor
US11877135B2 (en) Audio apparatus and method of audio processing for rendering audio elements of an audio scene
JP2010206451A (en) Speaker with camera, signal processing apparatus, and av system
KR20150006799A (en) Audio processing apparatus
JP2010206451A5 (en)
US12003673B2 (en) Acoustic echo cancellation control for distributed audio devices
US9826311B2 (en) Method, device and system for controlling a sound image in an audio zone
KR101695840B1 (en) System for automatic controlling digital tv volume based on loudness and the method thereof
TW201626778A (en) Sound conditioning
GB2550877A (en) Object-based audio rendering
CN105163240A (en) Playing device and sound effect adjusting method
KR20160098649A (en) Sweet spot setting device for speaker and method thereof
WO2016197752A2 (en) Cooperative playback volume adjustment method and device, and cooperative playback device
KR100962698B1 (en) Audial and Visual Information Transfer System for Audience
JP5326332B2 (en) Speaker device, signal processing method and program
Jackson et al. Object-Based Audio Rendering
RU2818982C2 (en) Acoustic echo cancellation control for distributed audio devices
US20230113703A1 (en) Method and system for audio bridging with an output device
KR101723296B1 (en) System and method for separating source of 3d sound
KR20050029519A (en) Sound system having function of controlling volume of each speaker

Legal Events

Date Code Title Description
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20191219

Year of fee payment: 4