Multimedia systems and multimedia operation methods

Abstract

This invention provides a multimedia system and a multimedia operation method. The multimedia system includes a signal encoder, a screen, multiple speakers, a processor, and an amplification circuit. The signal encoder encodes image signals, audio signals, and audio enhancement signals to provide multimedia signals. The image signals are divided into multiple region image signals based on multiple display areas. The audio signals include multiple region audio signals corresponding to the multiple region image signals. The processor extracts the image signals, the multiple region audio signals, and the audio enhancement signals from the multimedia signals and controls the screen to display the image signals. The amplification circuit responds to the audio enhancement signals to adjust the multiple region audio signals and provides the adjusted multiple region audio signals to the multiple speakers.

Description

TECHNICAL FIELD

[0001] The present application relates to a multimedia system and a multimedia operation method, and particularly relates to a multimedia system and a multimedia operation method with improved sound source synchronization effect. BACKGROUND

[0002] Generally, a multimedia playing device includes a screen and at least one speaker. The at least one speaker plays audio signals. However, there can be sound effects or voices in a specific area of a picture displayed on the screen that need to be highlighted. The current audio playing method cannot highlight the sound effects or voices in the specific area. Therefore, the current multimedia playing device needs to be improved in terms of sound source synchronization effect. SUMMARY

[0003] The present application provides a multimedia system and a multimedia operation method with improved sound source synchronization effect.

[0004] A multimedia system disclosed by an embodiment of the present application includes a signal encoder, a screen, a plurality of speakers, a processor, and an amplification circuit. The signal encoder encodes an image signal, an audio signal, and an audio enhancement signal to provide a multimedia signal. The image signal is divided into a plurality of area image signals based on a plurality of display areas. The audio signal includes a plurality of area audio signals corresponding to the plurality of area image signals. The screen has the plurality of display areas. The processor is coupled to the screen. The processor extracts the image signal, the plurality of area audio signals, and the audio enhancement signal from the multimedia signal, and controls the screen to display the image signal. The amplification circuit is coupled to the processor and the plurality of speakers. The amplification circuit receives the plurality of area audio signals and the audio enhancement signal, and adjusts the plurality of area audio signals in response to the audio enhancement signal, and provides the adjusted plurality of area audio signals to corresponding speakers in the plurality of speakers.

[0005] A multimedia operation method disclosed by an embodiment of the present application is applied to a multimedia system. The multimedia system includes a screen and a plurality of speakers. The multimedia operation method includes: encoding an image signal, an audio signal, and an audio enhancement signal to provide a multimedia signal, wherein the image signal is divided into a plurality of area image signals based on a plurality of display areas of the screen, wherein the audio signal includes a plurality of area audio signals corresponding to the plurality of area image signals; extracting the image signal, the plurality of area audio signals, and the audio enhancement signal from the multimedia signal; controlling the screen to display the image signal; and adjusting the plurality of area audio signals in response to the audio enhancement signal by an amplification circuit, and providing the adjusted plurality of area audio signals to corresponding speakers in the plurality of speakers.

[0006] Based on the above, the present application is to add an audio emphasis signal to a multimedia signal. A zone image signal corresponds to a zone audio signal. Therefore, an amplification circuit is capable of reacting to the audio emphasis signal to adjust the zone audio signals, and providing the adjusted zone audio signals to corresponding speakers in the speakers. Thus, the speakers are capable of highlighting the sound or voice in a specific zone. In this way, the present application is capable of improving the sound source synchronization effect.

[0007] In order to make the above features and advantages of the present application more apparent, the following embodiments are specifically described below, and are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is a schematic diagram of a multimedia system according to an embodiment of the present application.

[0009] Figure 2 is a flowchart of a multimedia operation method according to an embodiment of the present application.

[0010] Figure 3 is a schematic diagram of a multimedia system according to an embodiment of the present application.

[0011] Figure 4 is a schematic diagram of a multimedia system according to an embodiment of the present application.

[0012] Figure 5 is a schematic diagram of a multimedia signal according to an embodiment of the present application.

[0013] Figure 6 is a schematic diagram of a screen and a speaker according to an embodiment of the present application.

[0014] BRIEF DESCRIPTION OF DRAWINGS

[0015] 100, 200: multimedia system

[0016] 110: signal encoder

[0017] 120, 320: screen

[0018] 130, 230: processor

[0019] 140, 240: amplification circuit

[0020] 141, 241: selection circuit

[0021] 250: control circuit

[0022] A01-A15: amplifier

[0023] CG1, CG2: gain code

[0024] CRE1, CRE2: code of reinforcement region

[0025] D1: direction

[0026] P1: first face

[0027] P2: second face

[0028] Q01-Q15: loudspeaker

[0029] R01-R15: display region

[0030] S110-S140: step

[0031] SGV01-SGV15: region audio signal

[0032] SGV01'-SGV15': adjusted region audio signal

[0033] SIMG: image signal

[0034] SIMG01-SIMG15: region image signal

[0035] SMU: multimedia signal

[0036] SV: audio signal

[0037] SVE, SVE1, SVE2: audio reinforcement signal DETAILED DESCRIPTION

[0038] The following detailed description of the application will be made in connection with the accompanying drawings. The components referred to in the following description which are shown by the same reference numerals in different drawings represent the same or similar components. These embodiments are merely a part of the present application and do not disclose all the possible embodiments of the present application. Rather, these embodiments are merely examples of the scope of the patent application of the present application.

[0039] Reference is made to Figure 1 , Figure 1FIG. 1 is a schematic diagram of a multimedia system according to an embodiment of the present application. In an embodiment, the multimedia system 100 includes a signal encoder 110, a screen 120, speakers Q01-Q15, a processor 130, and an amplification circuit 140. The signal encoder 110 encodes an image signal SIMG, an audio signal SV, and an audio enhancement signal SVE to provide a multimedia signal SMU. The multimedia signal SMU is, for example, a multimedia data stream. The signal encoder 110 is capable of combining the image signal SIMG, the audio signal SV, and the audio enhancement signal SVE into the multimedia data stream. In an embodiment, the image signal SIMG is divided into a plurality of region image signals based on a plurality of display regions. For example, the image signal SIMG is divided into 15 display regions R01-R15 based on a requirement of use (the present application is not limited thereto). Thus, the image signal SIMG is divided into 15 region image signals SIMG01-SIMG15. The audio signal SV includes region audio signals SGV01-SGV15. The region audio signals SGV01-SGV15 correspond to the region image signals SIMG01-SIMG15. In an embodiment, the speakers Q01-Q15 correspond to the display regions R01-R15, i.e., the number of the speakers Q01-Q15 is the same as the number of the display regions R01-R15. For example, the speaker Q01 corresponds to the display region R01. The speaker Q02 corresponds to the display region R02, and so on (the present application is not limited thereto). In an embodiment, the speakers Q01-Q15 are arranged in an array. In some embodiments, some of the speakers Q01-Q15 are arranged to surround the screen 120. The present application is not limited to the arrangement of the speakers Q01-Q15 in an embodiment.

[0040] In an embodiment, the processor 130 is coupled to the screen 120 and the signal encoder 110. The processor 130 receives the multimedia signal SMU from the signal encoder 110. The processor 130 extracts the image signal SIMG, the region audio signals SGV01-SGV15, and the audio enhancement signal SVE from the multimedia signal SMU. The processor 130 provides the image signal SIMG to the screen 120 to control the screen 120 to display the image signal SIMG. Further, the processor 130 controls the screen 120. The screen 120 displays the region image signal SIMG01 in the image signal SIMG in the display region R01, and displays the region image signal SIMG02 in the image signal SIMG in the display region R02, and so on.

[0041] In one embodiment, the amplification circuit 140 is coupled to the processor 130 and the speakers Q01-Q15. The amplification circuit 140 receives the zone audio signals SGV01-SGV15 and the audio emphasis signal SVE. The amplification circuit 140 reacts to the audio emphasis signal SVE to adjust the zone audio signals SGV01-SGV15 to generate adjusted zone audio signals SGV01'-SGV15'. The amplification circuit 140 provides the adjusted zone audio signals SGV01'-SGV15' to corresponding ones of the speakers Q01-Q15.

[0042] For example, the amplification circuit 140 reacts to the audio emphasis signal SVE to adjust the intensity (i.e., volume) of the zone audio signal SGV01 to generate an adjusted zone audio signal SGV01', and provides the adjusted zone audio signal SGV01' to the speaker Q01. Thus, the speaker Q01 plays the adjusted zone audio signal SGV01'. The amplification circuit 140 reacts to the audio emphasis signal SVE to adjust the intensity of the zone audio signal SGV02 to generate an adjusted zone audio signal SGV02', and provides the adjusted zone audio signal SGV02' to the speaker Q02. Thus, the speaker Q02 plays the adjusted zone audio signal SGV02' (the present application is not limited thereto).

[0043] It is worth mentioning here that the multimedia system 100 is to add the audio emphasis signal SVE to the multimedia signal SMU. The zone image signals SIMG01-SIMG15 correspond to the zone audio signals SGV01-SGV15. The amplification circuit 140 is capable of reacting to the audio emphasis signal SVE to adjust the zone audio signals SGV01-SGV15, and to provide the adjusted zone audio signals SGV01'-SGV15' to the speakers Q01-Q15 correspondingly. Thus, the speakers Q01-Q15 are capable of highlighting the sound effects or voices at the specific display zones. In this way, the multimedia system 100 is capable of improving the sound source synchronization effect.

[0044] In one embodiment, the signal encoder 110 can be an encoding device in the multimedia system 100. The signal encoder 110 operates in the editing stage of the multimedia signal SMU. In one embodiment, the screen 120, the speakers Q01-Q15, the processor 130, and the amplification circuit 140 can be a multimedia playing device combination in the multimedia system 100.

[0045] In an embodiment, the screen 120 can be a screen of a display device that provides display functions of a liquid crystal display (LCD), a light-emitting diode (LED), an Organic Light-Emitting Diode (OLED), or the like. The processor 130 is, for example, a Central Processing Unit (CPU), or other programmable general purpose or special purpose microprocessors (Microprocessor), Digital Signal Processors (DSP), programmable controllers, Application Specific Integrated Circuits (ASIC), Programmable Logic Devices (PLD) or other similar devices or a combination of these devices, which can load and execute computer programs.

[0046] Please refer to Figure 1 and Figure 2 , Figure 2 is an operation flowchart of a multimedia operation method according to an embodiment of the present application. In an embodiment, the multimedia operation method is applicable to the multimedia system 100. In step S110, the video signal SIMG, the audio signal SV, and the audio emphasis signal SVE are encoded to provide a multimedia signal SMU. In step S120, the video signal SIMG, the zone audio signals SGV01-SGV15, and the audio emphasis signal SVE are extracted from the multimedia signal SMU. In step S130, the screen 120 is controlled to display the video signal SIMG. In addition, in step S140, the zone audio signals SGV01-SGV15 are adjusted in response to the audio emphasis signal SVE to generate adjusted zone audio signals SGV01'-SGV15', and the adjusted zone audio signals SGV01'-SGV15' are provided to corresponding ones of the speakers Q01-Q15. The implementation details of steps S110-S140 can be sufficiently inspired from the embodiment of Figure 1 , and thus are not repeated here.

[0047] Please refer to Figure 1 and Figure 3 , Figure 3Fig. 1 is a schematic diagram of a multimedia system according to an embodiment of the present application. In an embodiment, during a time interval of an editing stage of a multimedia signal SMU, it is known that the image signal SIMG includes an image of a target of interest making a sound in a display region R09. The image of the display region R09 is, for example, a news anchor reporting news. Therefore, an audio emphasis signal SVE can be set to highlight the voice or sound effect located in the display region R09.

[0048] During a playing stage of the multimedia signal SMU, the amplifier circuit 140 selects the region audio signal SGV09 corresponding to the display region R09 in response to the audio emphasis signal SVE. The amplifier circuit 140 adjusts the region audio signals SGV01-SGV15, and adjusts the intensity of the region audio signal SGV09 to be greater than the intensities of the region audio signals SGV01-SGV08, SGV10-SGV15 outside the region audio signal SGV09. That is, based on the audio emphasis signal SVE, the amplifier circuit 140 adjusts the intensity of the region audio signal SGV09' to be greater than the intensities of the adjusted region audio signals SGV01'-SGV08', SGV10'-SGV15'. The loudspeaker Q09 plays the adjusted region audio signal SGV09' at a volume greater than the loudspeakers Q01-Q08, Q10-Q15. Therefore, the sound made by the target of interest corresponding to the display region R09 can be highlighted. In addition, the arrangement of the loudspeakers Q01-Q15 corresponds to the arrangement of the display regions R01-R15, i.e., the number of loudspeakers Q01-Q15 is the same as the number of display regions R01-R15, but is not limited thereto. In an embodiment, the arrangement of the loudspeakers Q01-Q15 is the same as the arrangement of the display regions R01-R15. Therefore, the embodiment can effectively improve the sound source synchronization effect.

[0049] In an embodiment, the amplifier circuit 140 includes amplifiers A01-A15 and a selection circuit 141. The amplifiers A01-A15 are coupled to the loudspeakers Q01-Q15, i.e., the number of amplifiers A01-A15 is the same as the number of loudspeakers Q01-Q15, but is not limited thereto. The amplifiers A01-A15 each receive a corresponding one of the region audio signals SGV01-SGV15, and amplify the corresponding region audio signal. For example, the amplifier A01 is coupled to the loudspeaker Q01. The amplifier A01 receives the region audio signal SGV01, and amplifies the region audio signal SGV01 to generate an adjusted region audio signal SGV01'. The amplifier A02 is coupled to the loudspeaker Q02. The amplifier A02 receives the region audio signal SGV02, and amplifies the region audio signal SGV02 to generate an adjusted region audio signal SGV02', and so on.

[0050] The selection circuit 141 is coupled to the amplifiers A01-A15. The selection circuit 141 selects a first amplifier of the amplifiers A01-A15 in response to the audio emphasis signal SVE. The amplification circuit 140 has a first gain generated by the first amplifier greater than a second gain of at least one second amplifier other than the first amplifier. In the context of an embodiment, the selection circuit 141 selects the amplifier A09 as the first amplifier in response to the audio emphasis signal SVE. Thus, the amplifiers A01-A08, A10-A15 are the second amplifiers. The amplifiers A01-A08, A10-A15 reduce the second gain in response to the audio emphasis signal SVE. The amplifier A09 maintains the first gain in response to the audio emphasis signal SVE. Thus, the volume of the adjusted zone audio signal SGV09' is highlighted.

[0051] It is noted that the amplifiers A01-A08, A10-A15 reduce the second gain in response to the audio emphasis signal SVE. The amplifier A09 maintains the first gain in response to the audio emphasis signal SVE. Thus, the adjusted zone audio signals SGV01'-SGV15' provided by the speakers Q01-Q15 do not cause too much burden to the ears of the user. In some embodiments, the amplifier A09 can increase the first gain in response to the audio emphasis signal SVE.

[0052] Please refer to Figure 4 , Figure 4 is a schematic diagram of a multimedia system according to an embodiment of the present application. In an embodiment, the multimedia system 100 includes a signal encoder 110, a screen 120, speakers Q01-Q15, a processor 230, an amplification circuit 240, and a control circuit 250. The amplification circuit 240 includes amplifiers A01-A15 and a selection circuit 241. The implementations of the signal encoder 110, the screen 120, and the speakers Q01-Q15 can be found in Figures 1 to 3The sufficient enlightenment is obtained in the multiple embodiments of the application, and thus is not repeated here. In an embodiment, the control circuit 250 is coupled to the processor 230, the signal encoder 110, and the amplification circuit 240. The processor 230 receives the multimedia signal SMU. The processor 230 extracts the image signal SIMG, the region audio signals SGV01-SGV15, and the audio enhancement signal SVE from the multimedia signal SMU. The processor 230 provides the image signal SIMG to the screen 120. The processor 230 provides the region audio signals SGV01-SGV15 and the audio enhancement signal SVE to the control circuit 250. The audio enhancement signal SVE includes multiple region codes corresponding to the display regions R01-R15. Thus, the control circuit 250 receives the region audio signals SGV01-SGV15 and sends the region audio signals SGV01-SGV15 to corresponding ones of the amplifiers A01-A15, respectively. For example, the region audio signal SGV01 includes a region code indicating the display region R01. The region audio signal SGV02 includes a region code indicating the display region R02, and so on. Thus, the control circuit 250 provides the region audio signal SGV01 to the amplifier A01 in response to the region code of the region audio signal SGV01. The control circuit 250 provides the region audio signal SGV02 to the amplifier A02 in response to the region code of the region audio signal SGV02, and so on.

[0053] In an embodiment, the control circuit 250 also provides the audio enhancement signal SVE to the selection circuit 241. The selection circuit 241 selects the first amplifier and the second amplifier from the amplifiers A01-A15 in response to the audio enhancement signal SVE.

[0054] Please refer to the following description concurrently with the accompanying drawings. Figure 4 and Figure 5 , Figure 5 is a schematic diagram of a multimedia signal according to an embodiment of the application. In an embodiment, the multimedia signal SMU includes at least an audio enhancement signal SVE1, SVE2. The audio enhancement signal SVE1 includes a reinforcement region code CRE1. The selection circuit 241 selects the first amplifier and the second amplifier in response to the reinforcement region code CRE1. In an embodiment, the reinforcement region code CRE1 is represented as "1001". Thus, the selection circuit 241 selects the amplifier A09 as the first amplifier and the amplifiers A01-A08, A10-A15 as the second amplifiers. In addition, the audio enhancement signal SVE1 also includes a gain code CG1 corresponding to the reinforcement region code CRE1. In an embodiment, the gain code CG1 is represented as "1011". Thus, the amplifier A09 adjusts the first gain in response to the value of the gain code CG1. For example, the amplifier A09 increases the first gain from an initial value by 13db in response to the value of the gain code CG1.

[0055] In one embodiment, the number of bits of the gain code CG1 is less than the number of bits of the reinforcement region code CRE1 based on the encoding manner. The present application is not limited thereto. In some embodiments, the number of bits of the gain code CG1 is more than the number of bits of the reinforcement region code CRE1 based on the encoding manner.

[0056] In one embodiment, the audio reinforcement signal SVE2 includes the reinforcement region code CRE2 and the gain code CG2. The reinforcement region code CRE2 is represented as "0011". The gain code CG2 is represented as "0101". Thus, the amplifier A03 increases the first gain by 6db from the initial value.

[0057] For the purpose of illustration, the reinforcement region codes CRE1, CRE2 and the gain codes CG1, CG2 of one embodiment are exemplified as 4 bits respectively. Alternatively, the reinforcement region codes CRE1, CRE2 and the gain codes CG1, CG2 can be represented as binary values respectively, and the present application is not limited thereto. The number of bits of the reinforcement region codes CRE1, CRE2 can be adjusted based on the number of display regions. For example, if the number of display regions is 64, the reinforcement region codes CRE1, CRE2 include 6 bits respectively. In addition, the number of bits of the gain codes CG1, CG2 can also be adjusted based on the number of gain steps.

[0058] In one embodiment, the audio reinforcement signals SVE1, SVE2 further include a header code. Thus, the processor 230 is able to identify the audio reinforcement signals SVE1, SVE2 from the multimedia signal SMU based on the header codes of the audio reinforcement signals SVE1, SVE2, and extract the audio reinforcement signals SVE1, SVE2.

[0059] Please refer to Figure 6 , Figure 6 is a configuration diagram of a screen and speakers according to one embodiment of the present application. Figure 6 Part of the screen 320 and part of the speakers Q01-Q03 are exemplified. In one embodiment, the arrangement of the speakers Q01-Q03 corresponds to the arrangement of the display regions R01-R03 on the first face P1 of the screen 320. Specifically, the speaker Q01 corresponds to the display region R01. The speaker Q01 and the display region R01 are arranged along the direction D1. The speaker Q02 corresponds to the display region R02. The speaker Q02 and the display region R02 are arranged along the direction D1. The speaker Q03 corresponds to the display region R03. The speaker Q03 and the display region R03 are arranged along the direction D1.

[0060] In an embodiment, the loudspeakers Q01-Q03 are electrostatic loudspeakers. That is, the loudspeakers Q01-Q03 are implemented by at least a portion of an electrostatic loudspeaker array. The first face P1 of the screen 320 is a display face. The screen 320 utilizes the first face P1 to display the regional image signals SIMG01-SIMG03 toward a display direction. The display direction is substantially equal to the direction D1. The loudspeakers Q01-Q03 are disposed on the second face P2 of the screen 320. The second face P2 is opposite to the first face P1. The loudspeakers Q01-Q03 play the adjusted regional audio signals SGV01'-SGV03' toward the display direction.

[0061] It should be noted that the electrostatic loudspeakers have a very high output directivity of audio signals. Therefore, the loudspeakers Q01-Q03 can be allowed to be disposed on the second face P2 of the screen 320 and play the adjusted regional audio signals SGV01'-SGV03' toward the display direction, respectively. The adjusted regional audio signals SGV01'-SGV03' can penetrate the screen 320 and be delivered to the user. In this way, the present embodiment can further improve the sound source synchronization effect, thereby improving the viewing experience of the user.

[0062] In summary, the multimedia system and the multimedia operation method add the audio enhancement signals to the multimedia signals. The amplification circuit can react to the audio enhancement signals to adjust the regional audio signals and correspondingly provide the adjusted regional audio signals to the loudspeakers. Therefore, the loudspeakers can highlight the sound effects or voices in the specific display regions. In this way, the multimedia system and the multimedia operation method can improve the sound source synchronization effect. In addition, the loudspeakers are implemented by the electrostatic loudspeakers, respectively. The electrostatic loudspeakers have a very high output directivity of audio signals. Therefore, the adjusted regional audio signals can penetrate the screen and be delivered to the user. In this way, the sound source synchronization effect can be further improved, thereby improving the viewing experience of the user.

[0063] Although the present application has been disclosed in an embodiment as above, it is not intended to limit the present application, and any person skilled in the art can make some changes and modifications without departing from the concept and scope of the present application. Therefore, the protection scope of the present application should be defined by the claims.

Claims

1. A multimedia system, comprising: a signal encoder configured to encode a video signal, an audio signal, and an audio emphasis signal to provide a multimedia signal, wherein the video signal is partitioned into region video signals based on a plurality of display regions, wherein the audio signal comprises a plurality of region audio signals corresponding to the region video signals; a screen having the display regions; a plurality of speakers; a processor coupled to the screen and configured to extract the video signal, the region audio signals, and the audio emphasis signal from the multimedia signal, and to control the screen to display the video signal; and an amplification circuit coupled to the processor and the speakers and configured to receive the region audio signals and the audio emphasis signal, and to adjust the region audio signals in response to the audio emphasis signal, and to provide the adjusted region audio signals to corresponding ones of the speakers, wherein the amplification circuit comprises a plurality of amplifiers coupled to the speakers, wherein a first gain produced by a first amplifier is greater than a second gain produced by at least a second amplifier, wherein the audio emphasis signal comprises an emphasis region code and a gain code corresponding to the emphasis region code, wherein the first amplifier is selected in response to the emphasis region code, and wherein the first amplifier increases the first gain by a code value of the gain code.

2. The multimedia system of claim 1, wherein the amplification circuit is responsive to the audio emphasis signal to select a first region audio signal corresponding to a corresponding one of the display regions, and to adjust an intensity of the first region audio signal to be greater than an intensity of at least a second region audio signal other than the first region audio signal.

3. The multimedia system of claim 2, wherein the amplification circuit further comprises: a selection circuit coupled to the amplifiers and configured to select the first amplifier and the at least a second amplifier other than the first amplifier in response to the audio emphasis signal.

4. The multimedia system of claim 3, wherein the at least a second amplifier decreases the second gain in response to the audio emphasis signal.

5. The multimedia system of claim 3, wherein the first amplifier increases the first gain in response to the audio emphasis signal.

6. The multimedia system of claim 3, further comprising: a control circuit coupled to the processor and the amplification circuit and configured to receive the region audio signals, and to send the region audio signals to corresponding ones of the amplifiers, respectively.

7. The multimedia system of claim 3, wherein: the selection circuit selects the first amplifier and the at least a second amplifier in response to the emphasis region code.

8. The multimedia system of claim 1, wherein the speakers are arranged corresponding to the display regions.

9. The multimedia system of claim 1, wherein the speakers are implemented by an electrostatic speaker array.

10. The multimedia system of claim 9, wherein: a first face of the screen is configured to display the image signal toward a display direction, the loudspeakers are arranged at a second face of the screen and configured to play the adjusted area audio signals toward the display direction, and the first face is opposite to the second face.

11. A multimedia operation method for a multimedia system, wherein the multimedia system comprises a screen and loudspeakers, and wherein the multimedia operation method comprises: encoding an image signal, an audio signal and an audio emphasis signal to provide a multimedia signal, wherein the image signal is segmented into area image signals based on display areas of the screen, wherein the audio signal comprises area audio signals corresponding to the area image signals, wherein the audio emphasis signal comprises an emphasis area code and a gain code corresponding to the emphasis area code; extracting the image signal, the area audio signals and the audio emphasis signal from the multimedia signal; controlling the screen to display the image signal; adjusting the area audio signals in response to the audio emphasis signal by an amplification circuit, and providing the adjusted area audio signals to corresponding loudspeakers of the loudspeakers, wherein the amplification circuit comprises amplifiers, wherein the amplifiers are coupled to the loudspeakers correspondingly, wherein the amplification circuit generates a first gain of a first amplifier greater than a second gain of at least a second amplifier; selecting the first amplifier according to the emphasis area code; and the first amplifier increases the first gain by a code value of the gain code.

12. The multimedia operation method of claim 11, wherein the step of adjusting the area audio signals in response to the audio emphasis signal comprises: selecting a first area audio signal corresponding to a corresponding display area of the display areas in response to the audio emphasis signal; and adjusting an intensity of the first area audio signal to be greater than an intensity of at least a second area audio signal other than the first area audio signal.

13. The multimedia operation method of claim 11, wherein the step of adjusting the area audio signals in response to the audio emphasis signal comprises: receiving a corresponding area audio signal of the area audio signals by the amplifiers, and amplifying the corresponding area audio signal; selecting the first amplifier of the amplifiers and the at least a second amplifier other than the first amplifier in response to the audio emphasis signal.

14. The multimedia operation method of claim 13, wherein the step of generating the first gain of the first amplifier greater than the second gain of the at least a second amplifier other than the first amplifier in response to the audio emphasis signal comprises: decreasing the second gain in response to the audio emphasis signal.

15. The multimedia operation method of claim 13, wherein the step of generating the first gain of the first amplifier greater than the second gain of the at least a second amplifier other than the first amplifier in response to the audio emphasis signal comprises: increasing the first gain in response to the audio emphasis signal.

16. The multimedia operation method of claim 11, wherein the loudspeakers are arranged corresponding to the display areas. ​ ​ ​ 17. The method of claim 11, wherein the plurality of speakers are implemented by an electrostatic speaker array.

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