JP2014011519A - Speaker system and speaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker system in which the number of power receptacles is reduced, and an audio signal can be adjusted depending on the connection type of integral arrangement or separate arrangement, and to provide a speaker.SOLUTION: A speaker system 1 includes a plurality of speakers 10-12 with a built-in amplifier, and the plurality of speakers are connected electrically. The speaker system includes a detection unit 36 for determining whether one speaker and other speaker, connected electrically with one speaker via a power plug 24, are arranged integrally or separately, and a sound adjustment unit 53 for adjusting the audio signals to one and other speakers, based on the determination results from the detection unit.

Description

  The present invention relates to a speaker system and a speaker, and more particularly, to a speaker system and a speaker constituted by a plurality of speakers with a built-in amplifier.

The sound reproduction system includes a stereo (2ch) system and a 5.1ch surround system, and the speakers are arranged on a circumference centered on the listener. In addition, at a listening position equidistant from each speaker, a so-called sweet spot, a sound image intended by the producer can be obtained.
In the 2ch system, different audio data is output from the left and right speakers. For example, Patent Document 1 discloses a 2ch system structure having a left speaker and a right speaker.

  On the other hand, in the 5.1ch surround system, a right front speaker, a left front speaker, a center speaker disposed between them, a right rear speaker, a left rear speaker, and a subwoofer dedicated to a low frequency range (generally 20 Hz to 100 Hz). Output different audio data. For example, the right front speaker and the left front speaker are separately disposed on the side of the television receiver, and the center speaker is disposed below the television receiver (separated arrangement).

Here, as for the right front speaker, the left front speaker, and the center speaker, an integrated type (also referred to as a sound bar) whose appearance is formed in a bar shape has been widespread. In the case of this integrated type, a plurality of aggregated speakers are arranged below the television receiver.
If an integrated arrangement in which the right front speaker, the left front speaker, and the center speaker are integrally arranged or a separate arrangement in which the right front speaker, the left front speaker, and the center speaker are separately arranged can be selected, the degree of freedom of speaker installation can be increased.

JP 2010-34948 A

By the way, for example, when a large output is required for a speaker or when the number of speakers is increased as in the 5.1ch surround system, the output of the television receiver alone is insufficient, and this output needs to be compensated. . For this reason, a structure with a built-in amplifier is known for the right front speaker, the left front speaker, the center speaker, and the like.
However, in the case of a structure with built-in amplifiers, a power source for driving each amplifier is required for each speaker. For example, only the right front speaker, the left front speaker, and the center speaker require three power outlets. There is a problem that the wiring around the outlet is complicated.

  Furthermore, with respect to the right front speaker, left front speaker, and center speaker, the sweet spot changes depending on the connection type of the integral arrangement or the separated arrangement, so if the sound is not adjusted, the sound image intended by the producer is not obtained. There is also a problem that it cannot be obtained.

  The present invention has been made in view of the above circumstances, and provides a speaker system and a speaker capable of reducing the number of power outlets and adjusting an audio signal according to a connection type of an integral arrangement or a separate arrangement. Objective.

  In order to solve the above problems, a first technical means of the present invention is a speaker system including a plurality of speakers with a built-in amplifier, and a plurality of the speakers are electrically connected. A detection unit for determining whether another speaker electrically connected to the speaker via a power plug is disposed integrally or separately; and based on a determination result of the detection unit A speaker system comprising an audio adjustment unit that adjusts an audio signal to one speaker and another speaker.

  According to a second technical means, in the first technical means, the plurality of speakers each have a storage portion for storing the power plug, and the detection portion has the power plug disposed in the storage portion. If it is detected that the power plug is disposed integrally, and if it is detected that the power plug is disposed outside the storage portion, it is determined that the power plug is separated. It is a feature.

  A third technical means is the first or second technical means, wherein the plurality of speakers are composed of three speakers at the front left, right, and center in the 5.1ch surround system, and the detection unit is configured as described above. When it is determined that the center speaker and the left and right speakers are integrally disposed, the sound adjustment unit emphasizes the sound signal to the center speaker more than the left and right speakers, When the detection unit determines that the central speaker and the left and right speakers are separated from each other, the audio adjustment unit outputs an audio signal to the left and right speakers. It emphasizes more than a speaker.

  According to a fourth technical means, in any one of the first to third technical means, power from an AC power source or a DC power source is supplied.

  A fifth technical means is a speaker used in any one of the first to fourth technical means, wherein the power plug is a magnet plug.

According to the present invention, one speaker having a built-in amplifier and another speaker are electrically connected to each other, and are integrally arranged by connecting one power outlet or separated. A two-way structure of placement is possible. And the audio | voice signal to each speaker can be adjusted according to the connection type of these integral arrangement | positioning or isolation | separation type arrangement | positioning, and a suitable audio | voice can be provided to a listener.
In addition, the sound bar described above can be configured without each speaker having a power source and an amplifier. However, if each speaker has a power source and an amplifier as in the present invention, the integrated arrangement and the separated arrangement can be used. A 2-way structure can be selected. Further, any speaker can have the same structure, and an easily manufactured speaker system can be provided.

It is a schematic diagram for demonstrating a 5.1ch surround system. It is a figure which shows the example of arrangement | positioning of the integral arrangement | positioning by the speaker system of this invention. It is a figure which shows the example of arrangement | positioning of the separation type arrangement | positioning by the speaker system of this invention. It is a schematic block diagram of the speaker by this invention. It is explanatory drawing of the plug receptacle of FIG. It is explanatory drawing of the magnet plug etc. of FIG. It is a schematic block diagram of the subwoofer by this invention. It is a flowchart for demonstrating the audio | voice output by this invention.

Hereinafter, a configuration example and a processing example of a speaker system according to the present invention will be described with reference to the drawings. In the following description, a speaker system applied to the 5.1ch surround system will be described as an example.
FIG. 1 is a schematic diagram for explaining the 5.1ch surround system. The speaker system 1 of the present invention includes five speakers 10 to 14 and one subwoofer 15, for example, inputs audio from a television receiver and outputs different audio data.

  The speakers 10 to 14 are, for example, arranged on a circumference centering on the listener, the right front speaker 10, the left front speaker 12, the center speaker 11 arranged between them, the right rear speaker 13, the left It consists of a rear speaker 14. On the other hand, the subwoofer 15 is arrange | positioned at the side of the center speaker 11, for example. In the sweet spot indicated by the broken line in FIG. 1, a sound image intended by the producer can be obtained.

  Here, among the speakers 10 to 14, the right front speaker 10, the center speaker 11, and the left front speaker 12 positioned in front of the listener are configured to be detachable from each other. The right front speaker 10 corresponds to the front right speaker of the present invention, and the center speaker 11 corresponds to the front center speaker of the present invention. The left front speaker 12 corresponds to the front left speaker of the present invention.

  FIG. 2 is a diagram showing an arrangement example of an integrated arrangement by the speaker system of the present invention. For example, the right front speaker 10, the center speaker 11, and the left front speaker 12 are all installed sideways in the longitudinal direction. Further, the right front speaker 10 is connected to the right side of the center speaker 11 and the left front speaker 12 is connected to the left side of the center speaker 11 so that the external appearance is formed in a bar shape and integrally arranged. It can be arranged below the television receiver 70.

  The speakers 10 to 12 are electrically connected to each other. For example, when the AC input terminal of the right front speaker 10 is connected to the power outlet 72 via the power cord 71, the power from the power outlet 72 is taken up by the power cord and the magnet plug 24 wound in the right front speaker 10. Is supplied to the center speaker 11. The magnet plug 24 of the right front speaker 10 is configured to be detachable from a storage portion 26 having an opening on the outer surface of the speaker 10.

  Next, the power supplied to the center speaker 11 is supplied to the left front speaker 12 via the power cord wound around the center speaker 11 and the magnet plug 24. The magnet plug 24 of the center speaker 11 is configured to be detachable with respect to a storage portion 26 having an opening on the outer surface of the speaker 11. In addition, although illustration is abbreviate | omitted, the left front speaker 12 also has a magnet plug which can be attached or detached with respect to the accommodating part.

  FIG. 3 is a diagram showing an arrangement example of the separation type arrangement by the speaker system of the present invention. For example, the center speaker 11 is installed with the longitudinal direction set to be horizontal, while the right front speaker 10 and the left front speaker 12 are set with the longitudinal direction set to be vertical. The right front speaker 10 and the left front speaker 12 are separated from the center speaker 11, the right front speaker 10 is on the right side of the television receiver 70, the left front speaker 12 is on the left side of the television receiver 70, and the center speaker 11 is They can be arranged separately below the television receiver 70.

  Note that the right front speaker 10, the center speaker 11, and the left front speaker 12 are electrically connected to each other also in the case of the separated type arrangement. Similarly to the above, for example, when the AC input terminal of the right front speaker 10 is connected to a power outlet via the power cord 71, the power from the power outlet is supplied from the power cord 25 drawn from the right front speaker 10 and It is supplied to the center speaker 11 via the magnet plug 24. Further, the power supplied to the center speaker 11 is supplied to the left front speaker 12 via the power cord 25 and the magnet plug 24 drawn from the center speaker 11.

FIG. 4 is a schematic configuration diagram of the speaker according to the present invention, FIG. 5 is an explanatory diagram of the plug receiver of FIG. 4, and FIG. 6 is an explanatory diagram of the magnet plug and the like of FIG.
The right front speaker 10, the center speaker 11, and the left front speaker 12 described above can all have the same configuration. Each speaker 10-12 has, for example, an AC input terminal 20, a plug receptacle 21, a power board 23, a magnet plug 24, a power button 27, and the like on the power source side, and, for example, a wireless communication module 30, an amplifier on the voice side. A substrate 31, an audio output unit 32, a microcomputer 33, a detection unit 36, and the like are included.

The AC input terminal 20 is provided on the outer surface of each of the speakers 10 to 12 and is configured to be connectable to the plug of the power cord 71 described above. For this reason, the AC input terminal 20 is used when taking in the electric power from the power outlet 72 like the right front speaker 10 described in FIGS.
The plug receivers 21 are also provided on the outer surfaces of the speakers 10 to 12, respectively. The plug receiver 21 is used when the magnet plug 24 is received.

Specifically, as shown in FIG. 5 when the plug receiver is viewed from the front, the plug receiver 21 is formed inside a resin frame 21a, with the metal plate 21b at the center and pin electrodes 21c, 21c.
2 and 3, since the AC input terminal 20 is connected to the power cord 71, the plug receiver 21 is not used. On the other hand, the plug receiver 21 of the center speaker 11 is used, for example, when connecting to the magnet plug 24 of the right front speaker 10, and the plug receiver 21 of the left front speaker 12 is, for example, the magnet plug 24 of the center speaker 11. Used when connecting to

The AC input terminal 20, plug receptacle 21 and power button 27 are connected to the power board 23. The power board 23 includes a main transformer 23a and a sub-transformer 23b, and can supply power to the microcomputer 33 and the magnet plug 24 during standby as well as during speaker driving. The magnet plug 24 corresponds to the power plug of the present invention.
The magnet plug 24 has a resin case 24 a shown in FIG. 6 and is connected to one end of the power cord 25. The power cord 25 is configured to be freely wound around each speaker 10-12.

Magnets 24b and 24b that can be joined to the metal plate 21b of the plug receiver 21 of another speaker are embedded in the center of the end surface of the case 24a, and the positions corresponding to the pin electrodes 21c and 21c on both sides thereof are as follows. A hole 24c is provided with an electrode 24d inside.
Returning to FIG. 4, the microcomputer 33 is configured by a CPU, a ROM, and the like, and can communicate with the subwoofer 15 having an audio adjusting unit described later via the wireless communication module 30.

Here, it is determined based on the detection result of the detection unit 36 whether the arrangement is the integrated arrangement or the separation arrangement.
Specifically, for example, when the power cord 25 is not pulled out and the magnet plug 24 is arranged in the storage unit 26, the detection unit 36 determines that the detection unit 36 is an integral arrangement. On the other hand, for example, when the power cord 25 is pulled out and the magnet plug 24 is arranged outside the storage unit 26, the detection unit 36 determines that the separation type arrangement is used. This detection result is output to the subwoofer 15 side via the microcomputer 33.

  For example, the detection unit 36 may detect the length of the power cord 25 drawn out when the magnet plug 24 is joined to the plug receiver of another speaker. In this case, when the power cord 25 is not pulled out, the detection unit 36 determines that it is an integral arrangement. On the other hand, when the power cord 25 is pulled out, it is determined that the separation type arrangement is adopted. A predetermined threshold may be provided for the length of the power cord 25, and it may be determined that the integrated arrangement is provided when this threshold is not exceeded, and the separated arrangement is provided when this threshold is exceeded.

Moreover, the detection part 36 has a light emission part and a light-receiving part, and can also detect the distance between speakers by reflected light. In this case, a predetermined threshold value may be provided for the distance between adjacent speakers, and the integrated arrangement or the separated arrangement may be determined based on this threshold value.
The microcomputer 33 is connected to the amplifier board 31 that drives the amplifier 31a, amplifies the audio data transmitted from the subwoofer 15 side by the amplifier 31a, and outputs it from the audio output unit 32 to the outside.

  The structures of the right rear speaker 13 and the left rear speaker 14 may be the same as those of the speakers 10 to 12, but the magnet plug 24 and the like may be omitted from the speakers 10 to 12.

FIG. 7 is a schematic configuration diagram of a subwoofer according to the present invention. The subwoofer 15 has, for example, an AC input terminal 40, a power board 43, a power button 47, and the like on the power source side, and has, for example, a wireless communication module 50, an amplifier board 51, an audio output unit 52, and an audio adjustment unit on the audio side. 53 and so on.
The AC input terminal 40 is provided on the outer surface of the subwoofer 15, is configured to be connectable to a plug of the power cord 81, and is connected to the power outlet 82 via the power cord 81.

The AC input terminal 40 and the power button 47 are connected to the power board 43 and can supply power to the sound adjustment unit 53 and the like even when the subwoofer 15 is driven or in standby.
The audio adjustment unit 53 includes a microcomputer 54 and a DSP (Digital Signal Processor) 55, and is connected to the amplifier board 51. For example, the audio adjustment unit 53 extracts audio data from the data received from the television receiver 70, amplifies the audio data in the low frequency range, and outputs the audio data from the audio output unit 52 to the outside.

  The audio adjustment unit 53 can communicate with the speakers 10 to 14 via the wireless communication module 50, receives the detection result from the detection unit 36 of the speakers 10 to 12 positioned in the front, and is integrated and separated. Get type layout. Then, the audio adjustment unit 53 adjusts the extracted audio data according to whether it is an integrated arrangement or a separated arrangement. The adjusted audio data is transmitted to the front speakers 10 to 12 and the rear speakers 13 and 14.

FIG. 8 is a flowchart for explaining audio output according to the present invention.
For example, the detection unit 36 of the right front speaker 10 determines whether or not the case 24a of the magnet plug 24 of the right front speaker 10 is pressing a switch (not shown) in the storage unit 26, and the switch that pressed the switch. If it is on (YES in step S101), the integrated arrangement is detected. The audio adjustment unit 53 receives the detection result of the integrated arrangement of the right front speaker 10 and the center speaker 11, and calls an integrated audio adjustment program (step S102).

  For example, the detection unit 36 of the center speaker 11 determines whether or not the case 24 a of the magnet plug 24 of the center speaker 11 is pressing a switch in the storage unit 26. If the switch is in the ON state (YES in step S101), the audio adjustment unit 53 receives the detection result of the integrated arrangement of the center speaker 11 and the left front speaker 12 and calls the integrated audio adjustment program ( Step S102).

Subsequently, when audio is input from the television receiver 70 to the audio adjusting unit 53 (step S103), the audio adjusting unit 53 adjusts the audio signal to be integrated.
Thereby, for example, the volume and sound quality to the center speaker 11 are emphasized more than the right front speaker 10 and the left front speaker 12. The sound adjustment unit 53 outputs the sound data that places importance on the sound of the center speaker 11 to the right front speaker 10, the left front speaker 12, and the center speaker 11 via the wireless communication modules 50 and 30 (step S104). ). In the case of an integrated arrangement in which the three speakers 10 to 12 are integrated as shown in FIG. 2, the sound may be adjusted so that a feeling of spread is particularly obtained.

On the other hand, for example, in the right front speaker 10, when the detection unit 36 is in the switch-off state in which the contact between the case 24a and the switch in the storage unit 26 is released (NO in step S101), the separation type arrangement is performed. Is detected. The sound adjustment unit 53 calls a separate sound adjustment program based on the detection result of the separation type arrangement of the right front speaker 10 and the center speaker 11 (step S105).
For example, in the center speaker 11, the detection unit 36 detects the separation type arrangement when the contact between the case 24 a and the switch in the storage unit 26 is released (NO in Step S <b> 101). . The sound adjustment unit 53 receives the detection result of the separation type arrangement of the center speaker 11 and the left front speaker 12, and calls the separation type sound adjustment program (step S105).

Thereafter, when sound is input from the television receiver 70 to the sound adjustment unit 53 (step S103), the sound adjustment unit 53 adjusts the sound signal to a separation type.
Thereby, for example, the volume and sound quality of the right front speaker 10 and the left front speaker 12 are emphasized more than the center speaker 11. Then, audio data that places importance on the sound of the right front speaker 10 and the left front speaker 12 is output to the right front speaker 10, the left front speaker 12, and the center speaker 11 (step S104).

Further, in the separated arrangement as shown in FIG. 3, if the genre selected by the television receiver 70 is a movie, the volume and sound quality to the right front speaker 10 and the left front speaker 12 are set to the center. Emphasis is given more than the speaker 11. As a result, the speech of the dialogue is heard from almost the same height as the screen of the television receiver 70 and is difficult to hear from below the television receiver 70.
Furthermore, when the selected genre is a movie, the sound pressure level is higher than when the selected genre is music. It is also possible to provide a characteristic difference between the integrated arrangement and the separated arrangement for each genre.
In this way, adjacent speakers are electrically connected by the magnet plug, and a one-way arrangement or a two-way arrangement can be realized by connecting one power outlet. And the sound to each speaker can be adjusted according to the connection type of these integral-type arrangement | positioning or isolation | separation type arrangement | positioning, and a suitable audio | voice can be provided to a listener.

In the above embodiment, the example in which the audio adjusting unit 53 is provided in the subwoofer 15 has been described. However, the audio adjusting unit may be provided in a television receiver or a center speaker. When the sound adjustment unit is provided in the center speaker, at least the right front speaker and the left front speaker can have the same structure.
In the above embodiment, the right front speaker 10 has been described as being connected to the power outlet 72 via the power cord 71. However, the center speaker can be connected to a power outlet via a power cord to supply power to the left and right front speakers. Furthermore, not only the AC power source but also the power from the DC power source may be supplied to the speaker when the amount of power required for the speaker is small, for example.

DESCRIPTION OF SYMBOLS 1 ... Speaker system, 10 ... Right front speaker, 11 ... Center speaker, 12 ... Left front speaker, 13 ... Right rear speaker, 14 ... Left rear speaker, 15 ... Subwoofer, 20, 40 ... AC input terminal, 21 ... Plug receptacle 21a ... Frame, 21b ... Metal plate, 21c ... Pin electrode, 23, 43 ... Power board, 23a ... Main transformer, 23b ... Sub transformer, 24 ... Magnetic plug, 24a ... Case, 24b ... Magnet, 24c ... Hole, 24d ... Electrode, 25 Power cord, 26 ... Storage unit, 27, 47 ... Power button, 30, 50 ... Wireless communication module, 31, 51 ... Amplifier board, 31a ... Amplifier, 32, 52 ... Audio output unit, 33 ... Microcomputer, 36 ... detection unit, 53 ... sound adjustment unit, 54 ... microcomputer, 55 ... DSP, 70 ... television receiver, 71,8 ... the power cord, 72, 82 ... power outlet.

Claims (5)

A speaker system comprising a plurality of speakers with a built-in amplifier, wherein the plurality of speakers are electrically connected,
A detection unit for determining whether one speaker and another speaker electrically connected to the one speaker via a power plug are disposed integrally or separately;
A speaker system comprising: an audio adjustment unit that adjusts an audio signal to the one speaker and another speaker based on a determination result of the detection unit. The speaker system according to claim 1,
The plurality of speakers have a storage unit that stores the power plug, and the detection unit is integrally disposed when it is detected that the power plug is disposed in the storage unit. The speaker system is characterized in that when it is determined that the power plug is disposed outside the storage portion, it is determined that the power plug is disposed separately. The speaker system according to claim 1 or 2,
The plurality of speakers are composed of three speakers at the front left, right, and center in the 5.1ch surround system,
When the detection unit determines that the central speaker and the left and right speakers are integrally disposed, the audio adjustment unit transmits an audio signal to the central speaker to the left and right speakers. Emphasizing over speakers, if the detection unit determines that the center speaker and the left and right speakers are arranged separately, the sound adjustment unit is connected to the left and right speakers A speaker system, wherein an audio signal is emphasized more than the central speaker. The speaker system according to any one of claims 1 to 3,
A speaker system, wherein power from an AC power supply or a DC power supply is supplied. A speaker used in the speaker system according to any one of claims 1 to 4,
The speaker, wherein the power plug is a magnet plug.

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