WO2010013301A1 - Dispositif et procédé de reproduction de contenu - Google Patents

Dispositif et procédé de reproduction de contenu Download PDF

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Publication number
WO2010013301A1
WO2010013301A1 PCT/JP2008/063514 JP2008063514W WO2010013301A1 WO 2010013301 A1 WO2010013301 A1 WO 2010013301A1 JP 2008063514 W JP2008063514 W JP 2008063514W WO 2010013301 A1 WO2010013301 A1 WO 2010013301A1
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WIPO (PCT)
Prior art keywords
distance
display
audio signal
speakers
viewer
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PCT/JP2008/063514
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English (en)
Japanese (ja)
Inventor
四郎 鈴木
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パイオニア株式会社
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Priority to PCT/JP2008/063514 priority Critical patent/WO2010013301A1/fr
Publication of WO2010013301A1 publication Critical patent/WO2010013301A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation

Definitions

  • the present invention relates to a content reproduction device for reproducing a content signal including, for example, an image signal and an audio signal read by an optical disc player from, for example, a flat display with a speaker, an AV (Audio Visual) system, a television device, and the like. It relates to the technical field of methods.
  • Patent Document 1 discloses a sound reproduction method that improves the sense of reality by combining sound direction localization that reproduces a sense of perspective with directional sound image localization by linking volume adjustment processing and frequency signal processing. Is described.
  • Patent Document 2 describes a multi-channel audio reproducing apparatus that automatically adjusts the characteristics of reproduced sound without connecting a microphone to the apparatus or arranging it at a predetermined position.
  • Patent Documents 1 and 2 for example, a method in which the content of the content is transmitted with the highest presence or the most content in a seat near the center in a movie theater equipped with a huge screen and a high-performance surround system.
  • the content is produced so that it can be viewed on the Internet. That is, there are many contents that have not been created so as to be suitable for viewing at home. For this reason, no matter how the image output or audio output is evolved, viewing using consumer devices in a general household may not be able to benefit from such evolution, or on the other hand, the sense of reality will be reduced. There is a technical problem that it may even happen.
  • the present invention has been made in view of the above-mentioned problems, for example, and content reproduction that makes it possible to reproduce realistic content even when viewing at a general home using a consumer device or the like. It is an object to provide an apparatus and a method.
  • a content reproduction apparatus is provided with a display that is supplied with an image signal and outputs an image according to the supplied image signal, and a distance from the display on both sides of the display.
  • a pair of speakers mounted in a fixed manner and supplied with an audio signal and outputting audio in accordance with the supplied audio signal; distance specifying means for specifying a distance from a viewer to the display; and the audio
  • the distance between the speakers between the pair of speakers can be artificially increased / decreased on hearing by the viewer, and an audio signal for supplying the signal-processed audio signal to the pair of speakers
  • the horizontal width of the image displayed on the processing means and the display is Wsd, and the image is displayed from the ideal viewing position recommended for the horizontal width Wsd.
  • a content signal including an image signal and an audio signal read out from a recording medium such as a DVD or an optical disk by a media reproduction apparatus including a pickup unit is received. Supplied.
  • a television set, a flat display with a speaker, or a content playback device such as an AV system outputs a supplied image signal by a display and performs signal processing on a supplied audio signal. , Output by speaker.
  • the video signal and the audio signal constituting the content signal are sequentially input to the content reproduction apparatus.
  • the display performs image output according to the supplied image signal. That is, it is displayed on the screen of its own in the direct view type or on a screen separately provided in the projection type.
  • a pair of speakers are attached to both sides of the display, and a fixed distance from the display is fixed. Simultaneously with the image output of the image signal, the supplied audio signal is output by the pair of speakers.
  • the pair of speakers may be configured as a part of the normal content reproduction apparatus. On the other hand, it may be installed on both sides of the content reproduction apparatus so that it is connected to the content reproduction apparatus by wire or wirelessly for communication. Therefore, it is possible for the viewer to further increase the degree of freedom of speaker arrangement.
  • the distance specifying means specifies the distance Wdx from the viewer to the display prior to the output of the image by the display and the output of the sound from the speaker or almost simultaneously with the start of the output.
  • the viewer may directly input the distance from the viewer's position to the display on a setting screen such as a display.
  • a sound signal for measurement for example, pink noise or white noise, is output from each speaker, and the distance Wdx is calculated from the detection result of the measurement signal in the sound collecting means such as a microphone disposed at the viewer's position, that is, You may measure indirectly.
  • the distance Wdx from the viewer to the display may be directly measured, or the distances Wsplx and Wsprx from the viewer to the pair of speakers on both sides of the display are first measured.
  • the distance Wdx may be calculated from the actual distance Wsp between the speakers, the distance Wsplx, and Wsprx.
  • the audio signal processing means including, for example, a processor, a memory, a converter, and the like processes the audio signal supplied from the player, so that the speaker between the pair of speakers is simulated in the sense of hearing by the viewer.
  • the distance Wsp ′ can be increased or decreased. In the present invention, as will be described later, such increase / decrease is performed under the control of the control means.
  • the audio signal processing means can make the viewer feel the sound spread by synthesizing and reproducing the reverberation sound signal generated in the viewing space and the original input audio signal, for example.
  • the audio signal processing means is, for example, a wide processing unit that performs a wide processing on the audio signal, and includes a filter, an adder, and the like, and performs a process of expanding the sound image of the audio signal reproduced by a method called crosstalk cancellation. become.
  • audio signal processing is processing that can change the impression that the audio output based on the audio signal gives to the viewer by some method, such as gain increase / decrease processing for each band or predetermined acoustic processing. It is a general term.
  • the sound signal processing means performs separate signal processing for each sound signal corresponding to each channel, so that the sound pressure level of the sound output from each speaker, the timing at which the sound is output from each speaker, etc. Make changes to characteristics. For example, when a 2ch audio signal is input, the audio signal processing means executes signal processing for changing characteristics such as output timing and sound pressure for each 2ch channel. Then, the audio signal corresponding to each channel subjected to the signal processing by the audio signal processing means is supplied to the pair of speakers and output separately from each speaker.
  • the control means is a control unit including, for example, a processor, a memory, and the like, so that the ratio between the distance from the viewer to the display and the distance between the speakers becomes an encouragement ratio in the professional viewing space, for example, the golden ratio.
  • the audio signal processing means is controlled. Specifically, the horizontal width of the image displayed on the display is Wsd, the distance from the ideal viewing position recommended for the horizontal width Wsd to the display is Wdo, the distance specified by the distance specifying means is Wdx, and the speaker Let the distance be Wsp ′.
  • control means controls the audio signal processing means so as to increase or decrease the inter-speaker distance Wsp 'so that the value of Wsp' / Wdx approaches the value of Wsd / Wdo.
  • control means controls the audio signal processing means so as to increase or decrease the inter-speaker distance Wsp ′ so that the value of Wsp ′ / Wdx matches the value of Wsd / Wdo.
  • the control means brings the value of Wsp ′ / Wdx closer to the value of Wsd / Wdo.
  • the audio signal processing means may be controlled so as to increase the virtual inter-speaker distance Wsp ′.
  • Wsp ′ / Wdx in the actual viewing space is larger than Wsd / Wdo in the professional viewing space
  • the value of Wsp ′ / Wdx is made closer to the value of Wsd / Wdo.
  • the audio signal processing means may be controlled so as to decrease or not increase or decrease the signal.
  • the content playback apparatus of the present invention may further include an image signal processing means.
  • the image signal processing means has the same function as the audio signal processing means.
  • the image signal is processed by an image signal processing means including a processor, a memory, etc., thereby increasing or decreasing the horizontal width of the image displayed on the display, and further supplying the image signal subjected to signal processing to the display.
  • control means performs the image signal processing so that the ratio of the distance from the viewer to the display and the distance between the speakers is an encouraged ratio in a professional viewing space, for example, a golden ratio.
  • Control means increases or decreases the horizontal width Wsd of the image displayed on the display so that the value of Wsp ′ / Wdx approaches the value of Wsd / Wdo, as in the method of controlling the audio signal processing means.
  • the image signal processing means is controlled so as to make it happen.
  • the control means brings the value of Wsp ′ / Wdx closer to the value of Wsd / Wdo.
  • the image signal processing means may be controlled so that the lateral width Wsd is not increased or decreased.
  • Wsp ′ / Wdx in the actual viewing space is larger than Wsd / Wdo in the professional viewing space
  • the width Wsd is made smaller to bring the value of Wsp ′ / Wdx closer to the value of Wsd / Wdo.
  • the image signal processing means may be controlled.
  • the content reproduction apparatus of the present invention may be a single product such as a television apparatus, and includes a PDP (Plasma Display Panel), an AV amplifier, and a pair of speakers. It may be configured by a combination of products.
  • the AV amplifier transmits size information for image output from the PDP through a communication interface such as HDMI (High Definition Multimedia Interface), and a pair of speakers are installed on both sides of the PDP. Therefore, it becomes possible to automatically adjust the problem on the continuity between devices.
  • the PDP, the AV amplifier, and the pair of speakers may be physically separated from each other. For example, they may be sold separately, installed at different occasions, and exchanged at different occasions.
  • the pair of speakers are attached to both sides of the display so that the distance from the display is fixed.
  • a center speaker, a super woofer, a rear speaker, and the like other than the pair of speakers forming the front left and right speakers may be used together with the pair of speakers.
  • the audio signal processing means and the control means enable the image so that the ratio between the distance from the viewer to the display in the viewing space and the distance between the speakers becomes the encouragement ratio in the professional viewing space, for example, the golden ratio.
  • Output and audio output can be executed. Furthermore, by reproducing an audio signal that improves the sense of breadth for the viewer, it is possible to dynamically reproduce a viewing space with a sense of presence and a surround effect, and to create a sense of beauty through hearing. In addition, it is not necessary for the viewer to have specialized knowledge, and it is possible to experience a high-quality viewing space with powerfulness and presence without complicated operations.
  • the present invention which provides a workaround, is very advantageous.
  • the distance specifying means calculates the distance to the microphone placed at the viewer's position in the distance measurement mode prior to the display output and the audio output. The distance is measured based on the time until the measurement sound from the pair of speakers is picked up by the microphone.
  • the distance specifying means measures the distance to the microphone placed at the viewer's position prior to outputting the image from the display and outputting the sound from the speaker. For example, when a microphone serving as a sound collecting unit is placed at the viewer's position and the content reproduction apparatus is once set to the distance measurement mode, a sound signal for measurement is transmitted from the speaker. Then, the transmitted sound signal for measurement is picked up by the microphone as the sound pickup means. Based on the time until the collected sound signal is picked up by the microphone, the distance from the pair of speakers to the microphone, that is, the distance from the viewer to the pair of speakers on both sides of the display, Wsplx and Wsprx, is measured.
  • the distance Wdx is calculated from the actual distance Wsp between the speakers, the distance Wsplx, and Wsprx.
  • the distance from the viewer to the display is indirectly measured by measuring the distance from the viewer to each of the pair of speakers.
  • the distance specifying means can input distance information from the viewer to the display measured in advance by the measuring means prior to the display output and the audio output.
  • the distance is specified as a distance indicated by the input distance information.
  • the distance specifying means inputs the distance from the viewer to the display prior to the output of the image by the display and the output of the sound by the speaker.
  • the distance information input here is measured in advance by a predetermined measuring means, and distance information indicating the measurement result may be automatically input from the interface.
  • the viewer who recognized the distance information which shows the measurement result may input by performing external operations, such as remote control operation.
  • the distance specifying unit may prompt the input of the distance information by an external operation by display output or sound output, and the user performs an input operation in response to the prompt.
  • the viewer may directly measure the distance with a tape measure and input the measurement result on the setting screen.
  • the detection results fluctuate due to ambient noise in an environment where people are likely to enter and exit, such as living rooms. This prevents the problem of being generated.
  • the content reproduction apparatus further includes storage means for storing the Wsd / Wdo value in advance, and the control means reads the stored Wsd / Wdo value and reads the read value.
  • the audio signal processing means is controlled so as to increase or decrease the inter-speaker distance Wsp ′ so that the value of Wsp ′ / Wdx approaches the value of Wsd / Wdo.
  • the incentive ratio between the horizontal width Wsd of the image displayed on the display in the professional viewing space and the distance Wdo from the ideal viewing position to the display recommended for the horizontal width Wsd for example, the golden ratio
  • storage means such as a memory.
  • the ratio in the storage means is not particularly limited, such as being stored in the form of an arithmetic expression indicating the distance Wsd / distance Wdo or in the form of a lookup table.
  • control means reads the value of Wsd / Wdo stored in the storage means, and the speaker distance Wsp ′ is closer to the read Wsd / Wdo value closer to the value of Wsp ′ / Wdx.
  • the audio signal processing means is controlled so as to increase or decrease.
  • the audio signal processing means is configured to increase the inter-speaker distance Wsp ′ when the value of Wsd / Wdo is greater than Wsp ′ / Wdx. And when the value of Wsd / Wdo is smaller than Wsp ′ / Wdx, the audio signal processing means is controlled so as not to decrease or increase or decrease the inter-speaker distance Wsp ′.
  • the control means sets the value of Wsp ′ / Wdx to the value of Wsd / Wdo. Therefore, the audio signal processing means may be controlled so as to increase the virtual speaker distance Wsp ′. Conversely, when Wsp ′ / Wdx in the actual viewing space is larger than Wsd / Wdo in the professional viewing space, the value of Wsp ′ / Wdx is made closer to the value of Wsd / Wdo.
  • the audio signal processing means may be controlled so as to decrease or not increase or decrease the signal.
  • another content reproduction apparatus of the present invention is provided with a display that is supplied with an image signal and outputs an image according to the supplied image signal, and a distance from the display on both sides of the display.
  • a pair of speakers that are attached in a fixed form, that are supplied with audio signals and that output audio according to the supplied audio signals, and a distance that specifies the distance from the viewer to the display or the pair of speakers Generating an image signal for urging the viewer to move in a direction to reduce a difference between the specified distance and the first predetermined distance determined according to a width of the image;
  • An image signal generating means for supplying the generated image signal, and an audio signal for urging the viewer to move in a direction to reduce the difference from the first predetermined distance. It generates and and at least one signal generation means of the audio signal generating means for supplying a voice signal said generated.
  • an image signal is output by a display, and an audio signal is output by a pair of speakers.
  • the distance Wdx from the viewer to the display is specified by the distance specifying means, or the distance Wdx from the viewer to the display is indirectly measured by measuring the distances Wsplx and Wsprx from the viewer to each of the pair of speakers. Measured. Then, the ratio between the distance Wdx specified by the distance measuring means and the horizontal width Wsd of the image displayed on the display is an encouraged ratio in the professional viewing space, for example, the golden ratio or close to the golden ratio.
  • the image signal generating means or the audio signal generating means prompts the viewer to move.
  • the first predetermined distance Wdx ′ is determined according to the ratio of the first predetermined distance Wdx ′ to the lateral width Wsd being the golden ratio. Then, an image signal or an audio signal is generated by the image signal generation unit or the audio signal generation unit to urge the viewer to move in the direction of reducing the difference between the distance Wdx and the first predetermined distance Wdx ′. Also good. The generated image signal or audio signal prompts the viewer to move.
  • an image signal for prompting to move the viewer may be generated, or an audio signal for prompting to move the viewer may be generated by the sound generation unit, or an image may be generated. It may be generated by the sound generation means as well as generated by the generation means.
  • the generated image signal or audio signal, or a combination of both image and audio signals prompts the viewer to move to an ideal viewing position, such as a golden ratio.
  • the value of Wdx / Wsd becomes the golden ratio. Prompt to move far from the display. Conversely, if the ratio between the distance Wdx and the width Wsd is determined to be larger than the golden ratio, that is, if the distance Wdx is longer than the first predetermined distance Wdx ′, the value of Wdx / Wsd becomes the golden ratio. To move the display closer to the display.
  • the image signal generating unit and the audio signal generating unit allow the ratio of the distance Wdx from the viewer to the display in the viewing space and the horizontal width Wsd of the image displayed on the display to be the golden ratio. Output and audio output can be executed. Furthermore, it is possible to make the viewer feel aesthetically through hearing. Moreover, it is not necessary for the viewer to have specialized knowledge, and it is possible to experience a realistic viewing space without complicated operations.
  • the environment close to the golden ratio should be achieved within the range that can be achieved even with the size of a consumer display.
  • the present invention which makes it possible to realize is very advantageous.
  • the distance between the speakers between the pair of speakers can be artificially increased or decreased on hearing by the viewer
  • the audio signal processing means for supplying the signal-processed audio signal to the pair of speakers, and the inter-speaker distance is simulated at a second predetermined distance determined according to the distance from the specified viewer to the display.
  • the audio signal processing means including a processor, a memory, a converter, etc., for example, processes the audio signal supplied from the player so that the pair of speakers can be simulated in the sense of hearing by the viewer. It is possible to increase or decrease the inter-speaker distance Wsp ′.
  • the reverberation sound signal generated in the viewing space and the audio signal are synthesized and reproduced to make the viewer feel the sound spread.
  • it is a wide processing unit that performs a wide processing on an audio signal, for example, and includes a filter, an adder, and the like, and performs a process of expanding the sound image of the audio signal reproduced by a method called crosstalk cancellation.
  • the control means is a control unit including, for example, a processor, a memory, and the like, and the audio signal processing means is set so that the ratio of the distance Wdx from the viewer to the display and the inter-speaker distance Wsp ′ becomes the golden ratio. To control.
  • the second predetermined distance Wsp2 is determined according to the ratio of the distance Wdx from the viewer to the display and the second predetermined distance Wsp2 being the golden ratio. Then, for example, the control means determines that the ratio of the distance Wdx to the speaker distance Wsp ′ is smaller than the golden ratio, that is, if the speaker distance Wsp ′ is greater than the second predetermined distance Wsp2, Wdx / Wsp ′.
  • the audio signal processing means is controlled so as to bring the value of close to the golden ratio, that is, so as not to increase or decrease the virtual inter-speaker distance Wsp ′.
  • the ratio of the distance Wdx to the speaker distance Wsp ′ is determined to be larger than the golden ratio, that is, when the speaker distance Wsp ′ is smaller than the second predetermined distance Wsp2, the value of Wdx / Wsp ′ is set to the golden ratio.
  • the sound signal processing means is controlled so that the distance between the speakers Wsp ′ is increased.
  • the audio signal processing means and the control means can be realized such that the ratio of the distance Wdx from the viewer to the display in the viewing space and the inter-speaker distance Wsp ′ becomes the golden ratio. Furthermore, by reproducing an audio signal that improves the sense of breadth for the viewer, it is possible to dynamically reproduce a viewing space with a sense of presence and a surround effect, and to create a sense of beauty through hearing. Moreover, the viewer can automatically adjust the viewing space to the golden ratio without being conscious of the viewer, thereby providing a realistic viewing space.
  • a content reproduction method is provided with a display that is supplied with an image signal and outputs an image according to the supplied image signal, and a distance from the display on both sides of the display.
  • a content playback method in a content playback apparatus comprising a pair of speakers attached in a fixed manner, to which an audio signal is supplied and that outputs audio in accordance with the supplied audio signal, from a viewer to the display
  • the distance identification step for identifying the distance between the pair of speakers can be artificially increased / decreased in the auditory sense of the viewer by signal processing the audio signal and the signal processing is performed.
  • Wdo the distance from the ideal viewing position recommended for the width Wsd to the display
  • Wdx the specified distance
  • Wsp ′ the distance between the speakers
  • the value of Wsd / Wdo is A control step of controlling the audio signal processing means so as to increase or decrease the inter-speaker distance Wsp ′ on the side where the value of Wsp ′ / Wdx approaches.
  • the ratio of the distance from the viewer to the display in the viewing space and the distance between the speakers by the audio signal processing step and the control step is the recommended ratio in the professional viewing space, for example, golden Image output and audio output can be executed so that the ratio becomes equal. Furthermore, by reproducing an audio signal that improves the sense of breadth for the viewer, it is possible to dynamically reproduce a viewing space with a sense of presence and a surround effect, and to create a sense of beauty through hearing. In addition, it is not necessary for the viewer to have specialized knowledge, and it is possible to experience a high-quality viewing space with powerfulness and presence without complicated operations.
  • the content reproduction method of the present invention can also adopt various aspects similar to those of the content reproduction apparatus of the present invention described above.
  • another content reproduction method of the present invention supplies a display to which an image signal is supplied and outputs an image corresponding to the supplied image signal, and distances from the display to both sides of the display.
  • a content playback method in a content playback apparatus comprising a pair of speakers to which audio signals are supplied and audio output according to the supplied audio signals is attached, wherein the display is received from a viewer Alternatively, the viewer is moved in a direction to reduce the difference between the distance specifying step for specifying the distance to the pair of speakers and the first predetermined distance determined according to the specified distance and the width of the image.
  • An image signal generating step for generating an image signal for prompting and supplying the generated image signal, and a difference from the first predetermined distance
  • the ratio of the distance Wdx from the viewer to the display in the viewing space and the horizontal width Wsd of the image displayed on the display is golden by the image signal generation unit and the audio signal generation unit. It becomes feasible to become ratio. Furthermore, it is possible to make the viewer feel aesthetically through hearing. Moreover, it is not necessary for the viewer to have specialized knowledge, and it is possible to experience a realistic viewing space without complicated operations.
  • the content reproduction apparatus of the present invention includes the audio signal processing means and the control means, while the content reproduction method of the present invention includes the audio signal processing step and the control step.
  • Image output and audio output can be executed such that the ratio between the distance from the viewer to the display and the distance between the speakers becomes an encouraged ratio in the professional viewing space, for example, the golden ratio.
  • reproducing an audio signal that improves the sense of breadth for the viewer it is possible to dynamically reproduce a viewing space with a sense of presence and a surround effect, and to create a sense of beauty through hearing.
  • FIG. 1 is a block diagram showing the configuration of the content reproduction apparatus 1 according to the embodiment.
  • a content reproduction apparatus 1 is, for example, a television apparatus, and includes a display 11, a pair of speakers 12a and 12b, a memory 13, a distance specifying unit 14, a control unit 15, an audio signal processing unit 16, and an image signal generation unit 17. And an audio signal generator 18.
  • the content playback apparatus 1 first receives a content signal including an image signal and an audio signal read by a player 2 including a pickup unit from a disk 3 such as a DVD during operation.
  • a content signal including an image signal and an audio signal read by a player 2 including a pickup unit from a disk 3 such as a DVD during operation.
  • the type of the disc 3 is not limited to the number of recording layers, and various types such as a BlueRay disc, HD-DVD, DVD, and CD can be considered.
  • the disc 3 has information such as AV contents to be reproduced by the player 2.
  • the supplied image signal and audio signal are processed by the content reproduction apparatus 1 and further output to the viewer 5 by the display 11 and the pair of speakers 12a and 12b.
  • the pair of speakers 12a and 12b are a front right speaker and a front left speaker. Typically, a right audio signal and a left audio signal for stereo sound are input to these speakers, respectively. Rear speakers and super woofers other than these may be connected, and in this case, 5.1-channel surround sound signals are respectively input to these speakers.
  • the memory 13 is an example of the “storage means” according to the present invention, and displays the horizontal width Wsd of the image displayed on the display 11 in the professional viewing space and the ideal viewing position recommended for the horizontal width Wsd.
  • An incentive ratio with a distance Wdo up to 11, for example, a golden ratio, that is, a value of Wsd / Wdo is stored in advance. The ratio stored in the memory 13 will be described in detail later with reference to FIG.
  • the distance specifying unit 14 is an example of the “distance specifying unit” according to the present invention, and calculates the distance Wdx from the viewer 5 to the display 11 prior to outputting an image from the display 11 and outputting sound from the speakers 12a and 12b. Identify.
  • the distance specifying unit 14 outputs a sound signal for measurement, for example, pink noise or white noise, from each of the speakers 12a and 12b, and performs measurement in sound collecting means such as a microphone disposed at the position of the viewer 5.
  • the distance Wdx is calculated from the detection result of the signal for use, that is, the distance Wdx from the viewer 5 to the display 11 is indirectly measured. The operation of the distance specifying unit 14 will be described in detail later with reference to FIG.
  • the control unit 15 is an example of the “control unit” according to the present invention, and includes, for example, a processor, a memory, and the like.
  • control unit 15 sets the horizontal width of the image stored on the display 11 stored in the memory 13, for example, the golden ratio to Wsd / the distance from the ideal viewing position recommended for the horizontal width Wsd to the display 11. Read the value of Wdo. Then, the control unit 15 sets the distance specified by the distance specifying unit 14 as Wdx, and sets the distance between the speakers 12a and 12b as Wsp '.
  • the audio signal processing unit 16, the image signal generation unit 17, and the audio signal generation unit 18 are controlled so as to increase or decrease the distance Wsp ′. The operation of the control unit 15 will be described in detail with reference to FIGS.
  • the audio signal processing unit 16 is an example of the “audio signal processing means” according to the present invention, and includes, for example, a processor, a memory, a converter, and the like.
  • the audio signal processing unit 16 can process the audio signal supplied from the player 2 to increase or decrease the speaker-to-speaker distance Wsp ′ between the pair of speakers 12a and 12b in an auditory sense by the viewer 5.
  • the audio signal processing unit 16 is a wide processing unit that performs a wide processing on the audio signal, and includes a filter, an adder, and the like, and performs a process of expanding the sound image of the audio signal reproduced by a method called crosstalk cancellation.
  • the audio signal subjected to signal processing is supplied to the pair of speakers 12a and 12b.
  • the audio signal processing unit 16 will be described in detail later with reference to FIG.
  • the image signal generator 17 is an example of the “image signal generator” according to the present invention.
  • the first predetermined distance Wdx ' is determined in accordance with the ratio of the first predetermined distance Wdx' to the lateral width Wsd being the golden ratio.
  • the image signal generation unit 17 generates an image signal for prompting the viewer 5 to move in the direction of reducing the difference between the distance Wdx and the first predetermined distance Wdx ′.
  • the generated image signal is supplied to the display 11 and output, thereby prompting the viewer 5 to move in the direction of reducing the difference from the first predetermined distance.
  • the audio signal generator 18 is an example of the “audio signal generator” according to the present invention. Similar to the image signal generation unit 17, the audio signal generation unit 18 generates an audio signal that prompts the viewer 5 to move in the direction of reducing the difference between the distance Wdx and the first predetermined distance Wdx ′. The generated audio signal is supplied to and output from the pair of speakers 12a and 12b, thereby prompting the viewer 5 to move in a direction that reduces the difference from the first predetermined distance.
  • the display 11 is a device that can output an image signal as an image, such as a plasma display, a liquid crystal display, a projector, or a monitor, and is generated by the image signal supplied from the player 11 and the image signal generator 17.
  • the image signal is output to the viewer 5 in accordance with the received image signal.
  • the pair of speakers 12 a and 12 b outputs the audio signal to the viewer 5 in accordance with the supplied audio signal and the audio signal generated by the audio signal generator 18.
  • the ratio of the distance from the viewer to the display in the viewing space and the distance between the speakers can be an encouraged ratio in the professional viewing space, for example, the golden ratio. Furthermore, by reproducing an audio signal that improves the sense of breadth for the viewer, it is possible to dynamically reproduce the viewing space with a sense of presence and surround effect, and to create a sense of beauty through hearing. In addition, it is not necessary for the viewer to have specialized knowledge, and it is possible to experience a high-quality viewing space with powerfulness and presence without complicated operations.
  • the present invention is very advantageous.
  • FIG. 2 is a plan view showing a professional viewing space according to the embodiment.
  • a professional sound mixer 100 uses a professional display device 101 and speakers 102a and 102b to mix AV content.
  • a pair of speakers 102 a and 102 b are attached to both sides of the display 101.
  • the horizontal width of the image displayed on the display 101 in the professional viewing space is Wsd, and the distance between the sound mixer 100 and the display 101, that is, the ideal viewing position recommended for the horizontal width Wsd is displayed.
  • the value of Wsd / Wdo, the golden ratio that normally has aesthetics, is stored in the memory 13 in advance.
  • the actual distance Wsp between the speakers 12a and 12b is also stored in the memory 13 in advance.
  • the value of Wsd / Wdo and Wsp which are the golden ratio stored in the memory 13 or close to the golden ratio, are read by the control unit 15 and further processed by the control unit 15. This makes it possible to provide a realistic viewing space.
  • FIG. 3 is a plan view showing a viewing space when the audio signal processing unit 16 according to the embodiment operates.
  • the image signal supplied with the display 11 is output to the viewer 5, and the audio signal supplied with the speakers 12a and 12b is output.
  • the pair of speakers 12 a and 12 b are fixed at a distance from the display 11 and are attached to both sides of the display 11.
  • the distance specifying unit 14 first measures the distances Wsplx and Wsprx from the viewer 5 to the pair of speakers 12a and 12b on both sides of the display 11, and uses the actual distances Wsp and the distances Wsplx and Wsprx between the speakers 12a and 12b. A distance Wdx is calculated.
  • the distance Wdx is calculated from the actual distance Wsp, the distances Wsplx and Wsprx between the speakers 12a and 12b read from the memory 13.
  • FIG. 4 is a plan view showing a viewing space when the image signal generation unit 17 and the audio signal generation unit 18 according to the embodiment operate.
  • the control unit 15 brings the value of Wsp ′ / Wdx closer to the value of Wsd / Wdo.
  • the audio signal processing unit 16 is controlled so as to increase the typical inter-speaker distance Wsp ′.
  • the speaker-to-speaker distance Wsp between the pair of speakers 12a and 12b is artificially heard by the viewer 5. 'Increase. That is, the position of the pair of speakers 12a and 12b is moved to 22a and 22b in a simulated manner.
  • Wsd / Wdo in the professional viewing space is not greater than Wsp ′ / Wdx in the actual viewing space, viewer 5 is encouraged to bring the value of Wsp ′ / Wdx closer to the value of Wsd / Wdo.
  • the image signal generation unit 17 and the audio signal generation unit 18 are controlled so as to prompt the user to move to an ideal viewing position, for example, a position where the golden ratio is achieved.
  • the first predetermined distance Wdx ' is calculated in accordance with the ratio of the first predetermined distance Wdx' to the lateral width Wsd being the golden ratio.
  • the difference between the distance Wdx and the first predetermined distance Wdx ′ is reduced according to the calculated first predetermined distance Wdx ′.
  • the image signal generation unit 17 For example, if the difference between the first predetermined distance Wdx ′ and the distance Wdx is 15 centimeters, the image signal generation unit 17 generates an image signal of, for example, “Please move back 15 centimeters” and the generated image The signal is displayed on the screen by the display 11, and the audio signal generation unit 18 generates an audio signal of, for example, “Please move 15 centimeters backward”, and the generated audio signal is output by the speakers 12a and 12b. The Therefore, the viewer 5 is prompted to move to the position 5a from the display 11 to the first predetermined distance Wdx ', that is, the place where the golden ratio is achieved.
  • FIG. 5 is a block diagram showing the audio signal processing unit 16 according to the embodiment.
  • the audio signal processing unit 16 includes a clip prevention unit 16a, an effector 16b, a gain control unit 16c, and an addition unit 16d.
  • the clip prevention unit 16a is provided with, for example, a clip detection circuit.
  • the clip detection circuit detects the clip state of the input audio signal and increases the resistance value of the gain adjustment resistor of the gain control unit 16c.
  • the level of the audio signal input to the audio signal processing unit 16 is suppressed automatically. Therefore, distortion of sound output from the pair of speakers 12a and 12b is prevented.
  • the audio signal processed by the clip prevention unit 16a is transmitted to the effector 16b for wide processing and also transmitted to the addition unit 16d for addition.
  • the effector 16b is a device that changes the sound to be different from the original sound, and changes the characteristics such as the sound pressure level of the sound signal and the output timing. For example, when a 2ch audio signal is input, the effector 16b executes signal processing for changing characteristics such as output timing and sound pressure for each of the 2ch channels.
  • the gain controller 16c controls the audio signal processed by the effector 16b to increase the gain.
  • the adding unit 16d adds the original audio signal transmitted from the clip prevention unit 16a without being subjected to wide processing, that is, the audio signal subjected to wide processing by the effector 16a. Then, the audio signal corresponding to each channel subjected to the signal processing by the audio signal processing unit 16 is supplied to the pair of speakers 12a and 12b, and is output separately from each speaker.
  • FIG. 6 is a flowchart showing the content reproduction method according to the embodiment of the present invention.
  • the control unit 15 displays on the display 11 in the professional viewing space stored in the memory 13 (see FIG. 1).
  • An incentive ratio for example, a golden ratio, between the horizontal width Wsd of the image to be displayed and the distance Wdo from the ideal viewing position recommended for the horizontal width Wsd to the display 11 is read (step S101).
  • the distance Wdx is calculated from the actual distance Wsp between the speakers 12a and 12b read from the memory 13 and the distances Wsplx and Wsprx measured by the distance measuring unit. Is done. (Step S103).
  • the value of the lateral width Wsd / distance Wdo read out by the control unit 15 is calculated from the calculated value of Wsp ′ / Wdx. It is determined whether or not it is larger. (Step S104).
  • step S104 when it is determined that Wsd / Wdo is greater than Wsp ′ / Wdx (the result of determination in step S104: Yes), as an example of “controlling to increase Wsp ′” according to the present invention, the control unit 15, the audio signal processing unit 16 is controlled to increase the distance Wsp ′ between the virtual speakers 12a and 12b in order to bring the value of Wsp ′ / Wdx closer to the value of Wsd / Wdo (step S105). .
  • Step S106 As an example of “widely processing an audio signal” according to the present invention, the supplied audio signal is subjected to wide processing by the audio signal processing unit 16, and the audio signal subjected to the wide processing is subjected to the next speakers 12 a and 12 b.
  • the image signal received by the display 11 is output as an image. (Step S107).
  • an audio signal that has been subjected to wide processing by the pair of speakers 12a and 12b is output as an audio signal. (Step S108).
  • step S104 if it is determined that Wsd / Wdo is not greater than Wsp ′ / Wdx (the result of determination in step S104: No), the “prompt to move the viewer” according to the present invention.
  • the image signal generation unit 17 prompts the viewer 5 to move the viewer 5 to an ideal viewing position encouraged, for example, a position where the golden ratio is achieved (see FIG. 4).
  • An image signal is generated and transmitted to the display 11 for image output (step S109).
  • the voice signal that prompts the viewer to move is generated.
  • an audio signal is generated by the audio signal generation unit 18 so as to prompt the viewer 5 to move to an ideal viewing position encouraged, for example, a position where the golden ratio is achieved (see FIG. 4). Then, it is transmitted to the pair of speakers 12a and 12b for outputting sound (step S110).
  • an image signal generated and received by the display 11 is output as an image. (Step S107).
  • an audio signal generated and received by the pair of speakers 12a and 12b is output as audio. (Step S108).
  • the ratio of the distance from the viewer to the display in the viewing space and the distance between the speakers becomes the encouragement ratio in the professional viewing space, for example, the golden ratio. Furthermore, by reproducing an audio signal that improves the sense of breadth for the viewer, it is possible to dynamically reproduce the viewing space with a sense of presence and surround effect, and to create a sense of beauty through hearing. In addition, it is not necessary for the viewer to have specialized knowledge, and it is possible to experience a high-quality viewing space with powerfulness and presence without complicated operations.
  • the present invention relates to a technical field of a content reproduction apparatus and method for reproducing a content signal including an image signal and an audio signal read by an optical disc player, for example, from a flat display with a speaker, an AV system, a television apparatus, etc. Is available.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Television Receiver Circuits (AREA)

Abstract

L'invention porte sur un dispositif de reproduction de contenu (1) qui comprend : un dispositif d'affichage (11); une paire de haut-parleurs (12a, 12b) agencés des deux côtés du dispositif d'affichage à une distance fixe du dispositif d'affichage; un moyen d'identification de distance (14) qui spécifie une distance d'un spectateur (5) au dispositif d'affichage; un moyen de traitement de signal audio (16) qui traite un signal audio de façon à ajuster la distance inter-haut-parleur simulée entre les deux haut-parleurs dans le sens de l'audition d'un spectateur; et un moyen de commande (15). Si Wsd est une largeur latérale de l'image affichée sur le dispositif d'affichage, Wdo est une distance d'une position de visualisation idéale au dispositif d'affichage recommandé pour la largeur latérale Wsd, Wdx est une distance spécifiée, et Wsp' est une distance inter-haut-parleur, le moyen de commande (15) commande le moyen de traitement de signal audio de façon à ajuster la distance inter-haut-parleur Wsp' pour que la valeur de Wsp'/Wdx approche la valeur de Wsd/Wdo.
PCT/JP2008/063514 2008-07-28 2008-07-28 Dispositif et procédé de reproduction de contenu WO2010013301A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2008/063514 WO2010013301A1 (fr) 2008-07-28 2008-07-28 Dispositif et procédé de reproduction de contenu

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Application Number Priority Date Filing Date Title
PCT/JP2008/063514 WO2010013301A1 (fr) 2008-07-28 2008-07-28 Dispositif et procédé de reproduction de contenu

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0847098A (ja) * 1994-08-02 1996-02-16 Matsushita Electric Ind Co Ltd 映像機器用スピーカ装置
JP2001136600A (ja) * 1999-11-05 2001-05-18 Sony Corp ディスプレイ装置
JP2004247890A (ja) * 2003-02-13 2004-09-02 Sony Corp テレビジョン受像機のスピーカ装置
WO2006001272A1 (fr) * 2004-06-23 2006-01-05 Yamaha Corporation Dispositif de réseau de haut-parleurs et méthode pour définir le faisceau sonore du dispositif de réseau de haut-parleurs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0847098A (ja) * 1994-08-02 1996-02-16 Matsushita Electric Ind Co Ltd 映像機器用スピーカ装置
JP2001136600A (ja) * 1999-11-05 2001-05-18 Sony Corp ディスプレイ装置
JP2004247890A (ja) * 2003-02-13 2004-09-02 Sony Corp テレビジョン受像機のスピーカ装置
WO2006001272A1 (fr) * 2004-06-23 2006-01-05 Yamaha Corporation Dispositif de réseau de haut-parleurs et méthode pour définir le faisceau sonore du dispositif de réseau de haut-parleurs

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