JP2001292488A - Speaker system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker system that can allow a user to listen to a radiated sound excellently at all times independently of the operating mode and is provided with an operation means so as to be surely and simply operated even by one hand when the speaker system is in use in the vicinity of the user. SOLUTION: A 1st face (face b) of a case of the speaker system 100 is configured such that when the 1st face is used for an installed face in contact with a reference face such as a floor or a base on which the speaker system 100 is installed, an angle between the installed face and a sounding face (face s1) of radiated sound is selected to be a 1st angle (right angle), and when a 2nd face (face s3) different from the 1st face of the case is used for the installed face, an angle between the installed face and the sounding face s1 is selected to be a 2nd angle (acute angle) different from the 1st angle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker device used in connection with audio / visual equipment such as a television receiver or audio equipment.

[0002]

2. Description of the Related Art A variety of speaker devices have been provided which are connected to audio / visual equipment such as a television receiver and are used by being installed on a floor or a table in a room where the audio / visual equipment is located. . In the case of such a speaker device, the installation surface of the speaker device that is in contact with a reference surface such as a floor or a table on which the speaker device is installed is a predetermined surface, and the sound emission direction of the sound emitted from the speaker device is one. Only direction.

For example, in the case of a speaker device having a general rectangular parallelepiped housing, a sound emission surface for emitting sound is perpendicular to an installation surface such as a floor or a table which is in contact with a reference surface on which the speaker device is installed. It is to be. For this reason, when the speaker device is installed on a floor or a table, the main sound emission direction of the sound emitted from the speaker device is a direction from the inside of the speaker device to the sound emission surface to the outside of the speaker device. Therefore, the direction is parallel to the reference plane.

When such a speaker device is used by being connected to a television receiver or the like, a place slightly away from the speaker device, for example, a place several meters away from the speaker device, emits sound from the speaker device. This is the viewing position of the viewer who listens to the audio.

If the speaker device is installed so that the sound emission surface of the speaker device is directed toward the viewer, the sound emission direction of the sound emitted from the speaker device is located at a position slightly distant from the speaker device. Become the viewer direction. In this case, depending on the directional characteristics of the speaker device, the sound emission direction of the sound emitted from the speaker device sufficiently covers the direction in which the viewer's ear is present, and the sound from the speaker device is excellent. Will be available for viewing.

However, when a small speaker device is installed and used at a position where the listener's hand can reach, such as on a desk, that is, right next to the listener, as described above, the speaker device must be installed. On the surface of the installed desk, that is, the reference surface,
If the sound emission surface of the speaker device is set to be substantially right-angled, the main sound emission direction of the sound from the speaker device will not be in the direction where the viewer's ear is, and the sound from the speaker will not be able to be heard well. In some cases.

For this reason, in the case of a speaker device used by a listener, such as on a desk, to be placed very close to his / her hand, the speaker device installation surface which is brought into contact with the reference surface. And the sound emission surface of the speaker device is provided diagonally to this installation surface, and the main sound emission direction of the sound from the speaker device is set so that the user's ear is obliquely upward with respect to the installation surface. Some efforts have been made to make it move in a certain direction.

[0008]

As described above, a speaker device connected to a television receiver or the like,
Sometimes, the user's hand is used at a certain position, and at other times, as when watching a broadcast program through a television receiver, the user's hand is used at a position some distance from the user. You may want to use both.

However, as described above, the installation surface of the speaker device when the speaker device is installed on a floor, a table, or the like is determined in advance, and the direction of sound emission from this installation surface is only one direction. Therefore, unless one user devises a method of placing the speaker device, one speaker device is used in a position where the user's hand can reach,
Regardless of whether the speaker device is used at a position slightly distant from the user, it is impossible to satisfactorily listen to the sound emitted from the speaker device.

When the speaker device is used in a position very close to the user, various operation knobs and operation keys are provided on the speaker device, and these are operated by the user as required, so that the speaker device is released. There is a need to be able to make adjustments to the sound that sounds. However, even if various kinds of operation knobs and operation keys are provided in the speaker device, if they cannot be easily and reliably operated with one hand, the usability is deteriorated.

That is, when operating various operation knobs and operation keys provided on the speaker device, the user holds the speaker device with one hand and the other hand to prevent the speaker device from falling down or moving. It is inconvenient to operate the operation knobs and operation keys with the hands of the user.

In view of the above, the present invention enables the user to listen well even when used near the user or when used at a position slightly away from the user. As described above, a speaker capable of emitting sound and, when used in the vicinity of a user, provided with operating means so that operation can be performed easily and reliably with one hand. It is intended to provide a device.

[0013]

According to a first aspect of the present invention, there is provided a speaker device having a polyhedral housing, wherein one surface of the polyhedral housing emits sound. A speaker is provided so as to be a sound emitting surface that makes sound,
A second angle is different from the first angle of the first surface of the housing and an angle of the first surface of the housing and the second surface is different from the first angle. And the second surface of the housing having an angle of?

According to the loudspeaker device of the first aspect, the loudspeaker is mounted inside the loudspeaker device such that one surface of the polyhedral housing is a sound emitting surface. When the first surface of the housing of the speaker device is an installation surface that is in contact with a floor or a table on which the speaker device is installed, an angle between the first surface of the housing of the speaker device and an installation surface of the speaker device. Is the first angle, and when the second surface different from the first surface of the housing is set as the installation surface, the angle formed by the second surface different from the first angle is different from the first angle. 2 angle.

That is, by changing the placement of the speaker device and the installation surface, the angle between the installation surface and the sound emission surface is changed, and the sound emission direction of the sound emitted from the speaker is changed. Be able to be. This allows the speaker device to be placed very close to the user's hand and to be placed at a position slightly away from the user. In this case, the sound emitted from the speaker device can be satisfactorily heard.

According to a second aspect of the present invention, there is provided the speaker device according to the first aspect, wherein the first angle is a right angle, and the second angle is an acute angle. It is characterized by.

According to the second aspect of the present invention, the first angle and the second angle, which are the angles formed by the installation surface of the speaker device and the sound emission surface, are the first angle. Is a right angle, and the second angle is an acute angle.

[0018] With this arrangement, if the installation surface is a surface having a right angle with respect to the sound output surface, the listening position is on the side opposite to the sound output surface of the speaker device and slightly away from the speaker device. Even if there is a person, the sound emission direction of the sound emitted from the speaker device can be set to the direction with the ear of the listener, so that the sound can be heard well.

Further, if a surface having an acute angle with respect to the sound emitting surface is set as the installation surface, even if a listener is near the speaker device where the hand can reach the speaker device, the speaker device can emit the sound. Since the sound emission direction of the sound to be sounded can be set to the direction in which the ear of the listener near the speaker device is present, the sound emitted from the speaker device can be satisfactorily heard.

According to a third aspect of the present invention, there is provided the speaker device according to the first or second aspect, wherein a portion of the housing facing the second surface is provided with: An operation means for receiving an instruction input from a user is provided.

According to the speaker device of the third aspect of the present invention, the angle of the angle between the sound emitting surface of the speaker device and the surface of the housing that can be used as the installation surface is provided. Various operation means are provided on a portion of the housing facing the second surface forming the second angle.

With this configuration, if the speaker device is installed with the second surface as the installation surface, the second installation surface supports the entire speaker device even when the operation means is pressed or rotated. In addition, the installation state of the speaker device can be kept stable. Therefore, even with one hand, it is possible to easily and reliably operate the operation means.

According to a fourth aspect of the present invention, there is provided a speaker device according to the first or second aspect, wherein the polyhedral casing is formed to have a substantially triangular prism shape. Operating means for receiving an instruction input from a user is provided on a top portion of the housing facing the second surface.

According to the speaker device of the fourth aspect of the present invention, the polyhedral housing of the speaker device has a substantially triangular prism shape, and is formed of a housing surface which can be used as an installation surface. Various operation means are provided on the top of the housing on the side facing the second surface where the angle between the sound emitting surface of the speaker device and the sound emitting surface is the second angle. That is, the second
Is made so as to have any one of side surfaces having a substantially triangular prism shape, and various operation means are provided on a top portion facing the side surface.

With this configuration, when the speaker device is installed with the second surface as the installation surface, when the operation means is pressed or rotated, the installation state of the speaker device is stably maintained, and even if one hand is used. It is possible to easily and reliably perform an operation on the operation means.

A speaker device according to a fifth aspect of the present invention is the speaker device according to the third or fourth aspect, wherein the input voice signal is converted into a voice signal having a low voice speed. Means for receiving an instruction input for instructing a target speech speed to the speech speed conversion means.

According to the loudspeaker device of the fifth aspect, the loudspeaker device is provided with a speech speed conversion means, and the original speech speed of the input speech information can be obtained from the input speech signal without changing the sound quality of the input speech signal. A converted voice signal having a speech speed of a deceleration speed lower than (speech speed at a normal speed) can be generated.

An operation means is provided to the speech speed conversion means for accepting an instruction input for instructing a target speech speed by a user. This operating means is provided at a position where the installation state of the speaker device provided with the operating means is stably maintained even when operated by a user.

Thus, even if the operating means provided on the speaker device is frequently operated to change the speech speed of the sound emitted from the speaker device, the speaker device may be knocked down or moved. And the operating means can be easily and reliably operated. Therefore,
The speech speed conversion function mounted on the speaker device can be fully used.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a speaker device according to the present invention will be described with reference to the drawings.
In the embodiment described below, a case in which the housing of the speaker device according to the present invention is a triangular prism (pentahedron) will be described as an example.

FIG. 1 shows a speaker device 1 according to this embodiment.
It is a figure for explaining the appearance of 00. As shown in FIG. 1, the housing of the speaker device 100 according to this embodiment has a substantially triangular prism shape, and is substantially orthogonal to a longitudinal center line of the triangular prism and has a substantially triangular shape. , Face b
And a pentahedron having five surfaces s1, s2, and s3 corresponding to the side surfaces of the triangular prism and provided to be orthogonal to the surfaces a and b.

In the loudspeaker device 100 of this embodiment having a housing having a substantially triangular prism shape, the loudspeaker device 100 is designed such that the surface s1 is a sound emitting surface.
A left channel speaker SPL and a right channel speaker SPR are mounted inside the. Therefore, the sound emission direction of the sound to be emitted from the surface s1 serving as the sound emission surface is set to a direction from the inside of the speaker device 100 to the outside through the sound emission surface s1.

In this embodiment, when the speaker device 100 is placed on a reference surface such as a floor or a desk,
The two surfaces of the surface s3 and the surface b can be formed on the installation surface of the speaker device 100 which is brought into contact with the reference surface. For this reason, as shown in FIG. 1, the surface b is provided with projections b1, b2, and b3 that serve as installation legs when the surface b is used as the installation surface. Although not shown, projections serving as installation legs are provided in the same manner as the projections provided on the surface b, for example, near the four corners of the surface s3.

Then, the speaker device 1 of this embodiment
In FIG. 1, as shown in FIG. 1, operation keys and knobs operated by the user are provided on a top portion facing the surface s3, that is, on a top portion formed by the sound emitting surface s1 and the surface s2 adjacent thereto. Various operation means are provided.

The speaker device 100 of this embodiment is
It is used by being connected to audio-visual equipment such as a television receiver, but it does not merely emit sound corresponding to the audio signal from the television receiver, but also outputs the audio signal from the television receiver. It is possible to convert the input voice signal into a voice signal having a deceleration speed lower than the original speech speed without changing the voice quality. As described above, the speaker device according to the present embodiment has a speech speed conversion function.

For this reason, as shown in FIG. 1, in addition to the power switch 11 and the volume control knob 21, various kinds of operation means provided on the top portion facing the surface s3, the speech speed of the input audio signal can be determined in advance. Mode changeover switches 31, 32, 33, and 34 are provided for the user to instruct conversion in accordance with the speech rate conversion rate.

Further, as shown in FIG.
LEDs (Light Emitting Diodes) in the vicinity of 32, 33, and 34 for clearly notifying the user of which voice speed the sound is to be emitted to.
41, 42, 43 and 44 are provided.

Then, the power switch 11 is turned on to supply power to each part of the speaker device 100, and then the switches 31, 32, 33, and 34 are depressed to turn the volume knob 21 again. By performing the dynamic operation, it is possible to adjust the speech speed and volume of the sound emitted from the sound emitting surface s1 of the speaker device.

FIG. 2 is a block diagram for explaining the configuration of speaker device 100 of this embodiment shown in FIG. In the following, in order to simplify the description,
The case where the speaker device 100 of this embodiment is connected to a television receiver and used will be described as an example.

The speaker device 100 of this embodiment is
As shown in FIG. 2, a headphone terminal 1 for enabling connection with a headphone plug of the television receiver and receiving supply of an audio signal from the television receiver, and an audio signal from an audio output terminal of the television receiver. Input terminals 2L and 2R for analog audio signals of two channels, left and right, for receiving the supply are provided.

The analog audio signal supplied to the speaker device 100 of this embodiment through the headphone terminal 1 and the left and right analog audio signal input terminals 2L and 2R is supplied to the A / D conversion circuit 3. A / D conversion circuit 3
Converts the supplied audio signal into a digital signal and supplies it to the audio signal processing unit 4.

The audio signal processing section 4 uses the silent section of the audio signal supplied thereto, without changing the sound quality of the input audio signal, and without changing the sound quality of the input audio information (the original speech speed of the normal speed). A converted speech signal having a lower deceleration speed than the speech speed is generated. That is, the audio signal processing unit 4 has a function as a speech speed conversion unit.

Then, the mode changeover switches 31, 32, 33 for instructing the user to convert the speech speed of the input voice signal in accordance with a predetermined speech speed conversion rate as described above with reference to FIG. , 34 are connected to the audio signal processing unit 4. Then, the audio signal processing unit 4 performs a speech speed conversion of the audio signal converted into a digital signal from the A / D conversion circuit 3 according to an instruction from a user input through the switches 31, 32, 33, and 34. Then, the voice signal after the speech speed conversion is converted to an SRAM (Static Random Ac).
and the audio signals are read out from the SRAM 6 and output in the order of writing.

For this reason, the audio signal processing unit 4 has a DSP (Digital Si) including a control unit and a data processing unit for performing processing on the audio signal converted into digital data.
general processor).
The control unit is a ROM (Read Only Memory)
The data processing unit is controlled in accordance with the audio signal processing program stored in 5 and an instruction input from the user input through the mode changeover switch, so that the speech speed of the audio signal can be converted. It is configured.

Then, the speaker device 1 of this embodiment
00 is a speech speed conversion rate of 1 so that the audio signal input to the speaker device 100 is output at the same speech speed.
A normal (NORMAL) mode of 00%, a slow (SLOW) mode in which a speech speed conversion rate for converting voice into a voice signal of a voice speed slightly lower than the normal mode is 88%, and a voice in which the voice speed is slightly lower than the slow mode. A slower (SLOWER) mode with a speech rate conversion rate of 82% for converting to a voice signal, and a slowest (S) mode with a speech rate conversion rate of 76% for converting voice into a voice signal with a slightly lower speech rate than the slower mode
LOWEST) mode.

In the speaker device of this embodiment, the switch to the normal mode is performed using the switch 31, and the switch to the slow mode is performed using the switch 32. The switch to the slower mode is performed by using the switch 33, and the switch to the slowest mode is performed by using the switch.

As described above, in the vicinity of each of the mode changeover switches 31, 32, 33, and 34, the user is informed of which voice speed is being emitted. LEDs 41, 42, 43, and 44 are provided. These respond to a control signal from the audio signal processing unit 4 having a DSP configuration, and the LEDs 41, 42,
Drive control is performed by an LED control unit 40 that controls 43 and 44.

Then, in the audio signal processing unit 4, the digital audio signal of the speech speed according to the instruction from the user is converted into a D / D signal.
The signal is supplied to the A conversion circuit 7, where the signal is converted back to an analog audio signal, and then supplied to the audio power amplifier 8.

The audio power amplifier 8 adjusts the level of the analog audio signal supplied thereto to the volume control knob 2.
The level is adjusted in accordance with an instruction input from the user input through 1, and the level-adjusted left-channel analog audio signal is supplied to the left-channel speaker SPL, and the right-channel analog audio signal is supplied to the right-channel speaker SPR. .

Further, the speaker device 10 of this embodiment
0, a headphone plug 9 is provided, and by connecting headphones to this, the speaker device 1
At 00, the voice whose speech speed has been converted can also be heard through headphones.

Although not shown in FIG. 2 for the sake of simplicity, when the headphones are connected to the headphone plug 9, no sound is emitted from the speakers SPL and SPR. . Similarly, for example,
When the headphone terminal is inserted into the headphone plug of the television receiver, the audio signal input through the audio signal input terminals 2L and 2R is not accepted.

Then, the speaker device 1 of this embodiment
00 is provided with a speech speed conversion function as described above, and the speaker device 100 of this embodiment is connected to a television receiver and placed in the immediate vicinity of a viewer to output sound. The user can watch a television broadcast program while changing the speech speed. In addition, when it is not necessary to change the speech speed of the emitted sound, the speaker device 10 according to the present embodiment is used.
0 may be used at a position slightly away from the viewer, such as right beside the connected television receiver.

The manner of use of the speaker device 100 according to this embodiment will be described with reference to FIGS. 3 and 4 show a speaker device 1 according to this embodiment.
It is a figure for demonstrating the usage mode of 00. this house,
FIG. 3 is a view for explaining a mode in which the speaker device 100 according to the present embodiment is used in the vicinity of a user, and FIG. 4 is used in a case where the speaker device 100 is used in a position slightly away from the user. This is for describing an aspect in the case of doing so.

First, an embodiment in which the speaker device 100 is used in the vicinity of a user will be described. Some television broadcast programs include, for example, a bilingual news program and a movie that are broadcast in two languages, Japanese and English, so that one of the two languages can be selected and listened to. There are programs.

In the case of viewing such a bilingual broadcast program, for example, when a Japanese learning English has selected to output English voice, as shown in FIG. Then, the speaker device 100 connected to, for example, a headphone plug of the television receiver 200 is placed at a position where the viewer's own hand reaches, that is, immediately near the viewer.

Thus, the viewer can use the speaker device 10
0, mode changeover switches 31, 32, 3
By operating the buttons 3 and 34, it is possible to reduce the speech speed of the English voice or to set it to a normal speed, for example, to listen to English voices having different voice speeds while comparing them.

In this case, as shown in FIG. 3, the speaker device 100 is installed such that the surface s3 is an installation surface of the speaker device in contact with a reference surface such as a floor or a desk near the viewer. Is done. That is, in this case, as shown in FIG. 3, the speaker device 100 is placed horizontally. As described above, the installation surface of the speaker device is a surface of the speaker device that is brought into contact with the surface on which the speaker is installed (reference surface) when the speaker device is installed.

In this embodiment, the angle between the installation surface s3 of the speaker device 100 and the sound emission surface s1 is an acute angle, and when the surface s3 is used as the installation surface, FIG. As indicated by the arrow, the speaker device 10
The sound emission direction of the sound emitted from the sound emission surface s1 of 0 is obliquely upward from the reference plane, and is the direction in which the viewer has ears (the direction of the viewer's head). Thereby, even when the speaker device is installed near the viewer, the sound emitted from the speaker device 100 can be satisfactorily heard.

The power on / off switch 11, the volume control knob 21, and the mode changeover switches 31, 32, 33, and 34 as operating means are provided on a surface s3 serving as an installation surface.
Is provided on the top formed by the surface s3 and the surface s2. Therefore, the direction in which the mode changeover switches 31, 32, 33, and 34 are pressed is orthogonal to the installation surface s3, and the speaker device 100 falls down or moves even if each mode changeover switch is pressed down. There is no such thing as. Therefore, the mode can be switched easily and reliably by operating each mode switching switch stably.

The speaker device 10 according to this embodiment
0, the volume control knob 21 is
For example, the volume of a sound to be emitted is adjusted by performing a rotation operation in a longitudinal direction of 0, for example. The amount adjustment knob 21 is rotated by the user in the longitudinal direction of the speaker device 100 while being slightly pressed.

Therefore, when the volume control knob 21 is operated, a user's force is applied to the speaker device 100 in the direction perpendicular to the surface s3 and in the longitudinal direction of the housing. Therefore, the speaker device 100 does not fall down or move. Therefore, even when operating the volume control knob 21 for rotating operation,
By operating this stably, the volume can be easily and reliably adjusted.

Next, an embodiment in which the speaker device 100 is used at a position slightly away from the viewer will be described. For example, when it is not necessary to change the speech speed of the sound emitted from the speaker device 100, such as when watching a Japanese drama program, and the speech speed of the sound may be always constant, as shown in FIG. The speaker device 100 connected to, for example, a headphone plug of the television receiver 200 is installed not on the viewer side but on the television receiver side, such as right next to the television receiver 200.

In this case, as described above,
Surface b of speaker device 100 provided with 1, b2 and b3
And the speaker device 100 is placed vertically.
As described above, the surface b and the sound emission surface s of the speaker device 100
In this case, the sound emitted from the sound emitting surface s1 of the speaker device 100 is in the direction indicated by the arrow in FIG.

That is, as shown in FIG. 4, when the speaker 100 is installed at a position slightly away from the viewer, the sound emission direction of the sound emitted from the speaker device 100 is the direction facing the television receiver 200. And the speaker device 1
The direction may be a direction in which a viewer will be located at a place slightly away from 00. Thus, even if the speaker device 100 is installed at a place slightly away from the viewer, the viewer can satisfactorily hear the sound emitted from the speaker device 100.

FIGS. 5 and 6 show the sound emission surface s1 of the speaker device by changing the installation surface of the speaker device 100 in contact with a reference surface such as a floor or a desk on which the speaker device 100 is installed.
It is a figure for explaining that the sound emission direction of the sound made to be emitted from changes. FIGS. 5 and 6 show an extension direction of the sound output surface s1 and a direction parallel to the reference surface K when the speaker device 100 is installed on the reference surface K such as a floor or a desk. FIG. 3 is a diagram illustrating a case where a sound surface is viewed from the side).

FIG. 5 shows a case in which the speaker device 100 is placed vertically on a reference surface K such as a floor or a desk, that is, similar to the case shown in FIG.
FIG. 4 is a diagram illustrating a case where the speaker device 100 is installed such that an installation surface of the speaker device 100 is a surface b of a housing of the speaker device 100.

As described above, the surface b of the speaker device and the sound emitting surface s1 are configured to be orthogonal to each other.
The angle between 1 and the reference plane K is a right angle as shown in FIG. In this case, the main sound emission direction of the sound emitted from the sound emission surface s1 is set to be substantially parallel to the reference surface K as indicated by an arrow in FIG.

Therefore, when the speaker device 100 is installed as shown in FIG. 5, if the listener is in a direction opposite to the sound emission surface of the speaker device 100, a position slightly away from the speaker device 100 Is the speaker device 1
The speaker device 1 may be located at the listening position of the sound from 00.
The sound emission direction of the sound from 00 is the direction in which the listener's ear is present, and the listener can satisfactorily hear the sound emitted from the sound emission surface s1 of the speaker device 100.

FIG. 6 shows a reference plane K such as a floor or a desk.
When the speaker device 100 is placed horizontally, that is, as in the case shown in FIG. 3, the installation surface of the speaker device 100 that is in contact with the reference plane K is set to the surface s of the housing of the speaker device 100.
3 is a diagram illustrating a case where the speaker device 100 is installed so as to be No. 3. FIG.

As described above, the housing of the speaker device 100 is formed in the shape of a triangular prism. By setting the surface s3 of the housing of the speaker device 100 as an installation surface, the sound emitting surface s1 and the reference surface are formed. In FIG. 6, the angle between K and K is
It becomes an acute angle as indicated by the angle θ. In this case, the sound emitting surface s1
The sound emission direction of the sound emitted from is set to be slightly upward with respect to the reference plane K, as indicated by the arrow in FIG.

Therefore, when the speaker device 100 is installed as shown in FIG. 6, even if the speaker device 100 is installed in the immediate vicinity of the listener, the sound emission direction of the listener does not change. The direction in which the ears are present (a direction obliquely upward from the reference plane) can be set. Therefore, the sound emission direction of the sound from the speaker device 100 is the direction in which the listener's ear is present, and the sound emitted from the sound emission surface s1 of the speaker device 100 can be favorably heard.

As described above, in the speaker device 100 of this embodiment, the surface b of the housing of the speaker device 100
The (first surface) and the surface s3 (second surface) serve as installation surfaces. And when the surface b is set as the installation surface,
This installation surface, that is, a surface having a right angle (first angle) with the reference surface, and when the surface s3 is the installation surface, the angle between the installation surface, that is, the reference surface, is The speaker SPL is provided inside the speaker device 100 such that the surface s1 which is a surface having an acute angle (second angle) is a sound emitting surface.
SPR is attached.

Thus, as described with reference to FIGS. 5 and 6, when the speaker device 100 is installed on a reference surface such as a floor or a desk, the installation surface of the speaker device 100 in contact with the reference surface is changed. The angle of the sound emitting surface with respect to the reference plane can be changed, so that the sound emitting direction of the sound is always directed to the direction in the user's ear.

Thus, regardless of whether the speaker device 100 is used in the vicinity of the user or when the speaker device 100 is used at a position slightly distant from the user, the user can use the speaker device 100. The sound emission direction of the sound emitted from the speaker device 100 is set to the direction in which the user's ear is located, by simply changing the installation surface of the speaker device 100 without taking time and effort such as devising a method of installing the speaker. be able to.

Therefore, regardless of whether the speaker device 100 is used in the vicinity of the user, is used at a position slightly away from the user, or is misaligned, the speaker device 100 can be used. It is possible to favorably listen to the sound emitted from.

Further, since the various operation means are provided on the top portion facing the surface s3, when the speaker device 100 is used in the vicinity of the user, the surface s3 is set as the installation surface and the speaker device is used. By setting the device 100 in a horizontal position, for example, at the time of learning English hearing, etc., the mode changeover switches 31, 32, 33, 34
Is frequently operated to frequently switch the speech speed of the audio signal, the speaker device does not fall down or move.

That is, the mode can be switched easily and reliably by operating the mode switch stably. Similarly, when the power on / off switch and the volume adjustment knob are operated, the operation can be stably performed, and the power on / off and the volume adjustment can be easily and reliably performed.

In the above-described embodiment, an example is described in which two surfaces (surface b and surface s3) of the housing of the speaker device 100 having a substantially triangular prism shape are used as installation surfaces. explained. However, the installation surface is not limited to the two surfaces of the surface b and the surface s3. For example, the surface a facing the surface b may be the installation surface, or the surface s2 may be the installation surface. Even in these cases, the sound emitting surface can be the surface s1.

Further, in the above-described embodiment, the case where the housing of the speaker device has a substantially triangular prism shape has been described as an example. However, the present invention is not limited to this. For example,
The present invention can be applied to a speaker device having various polyhedral casings formed by a plurality of surfaces, such as a pentagonal prism, a hexagonal prism,..., And a soccer ball.

In this case, it is not always necessary that the installation surface and the sound emitting surface are adjacent to each other, as in the case of a triangular prism. By changing the installation surface, the angle between the reference surface and the reference surface differs. The speaker may be provided so that the surface which becomes the sound emission surface. Therefore, the angle between the reference plane and the sound emitting surface is not limited to the case where the first angle is a right angle and the second angle is an acute angle.

The point is, when the speaker device is used in different use modes as described with reference to FIGS. 3 and 4, for example, by changing the installation surface of the speaker device according to the use mode. In the usage mode, the sound emitting surface may be provided so that the direction in which the listener has the ear is the sound emitting direction of the sound emitted from the speaker device.

The mode changeover switch and the like are provided in the case where the housing of the speaker device is the same as that of the above-described embodiment.
When the surface s3 is the installation surface, the speaker device is provided on the top portion facing the surface s3 where the speaker device does not fall down or move even when a switch or the like is operated. However, depending on the shape of the housing, it may of course be provided on the surface facing the installation surface.

It is needless to say that a sound quality adjustment knob or the like may be provided as the operation means. Further, the speaker device according to the above-described embodiment has been described as being compatible with two-channel stereo with one left channel and one left channel, but the present invention is not limited to this. The present invention can be applied to a speaker device having only one speaker.

The above-described speaker device has been described as being connected to a television receiver. However, it is not limited to this. The present invention can be applied to various speaker devices that can be connected to various audio devices and audio / visual devices, and that may be used in different usage modes.

[0085]

As described above, according to the present invention, the surface of a polyhedral speaker device is provided with a plurality of surfaces which can be used as installation surfaces, and the installation surface is changed in accordance with a use mode, whereby sound is emitted. You can change the sound direction. Thereby, the sound emitted from the speaker device can always be satisfactorily heard by changing the installation surface according to the usage mode.

Further, even when the speaker device is installed at a position where the listener's hand stops, and the operating means provided on the speaker device is frequently operated, the speaker device does not fall down stably. By operating the operation means, a desired instruction can be easily and reliably input to the speaker device.

[Brief description of the drawings]

FIG. 1 is an external view of a speaker device according to an embodiment of the present invention.

FIG. 2 is a block diagram for explaining the speaker device shown in FIG.

FIG. 3 is a diagram for explaining an example of a usage mode of the speaker device shown in FIG. 1;

FIG. 4 is a diagram for explaining another example of a usage mode of the speaker device shown in FIG. 1;

FIG. 5 is a diagram for describing an installation surface, a sound emission surface, and a sound emission direction of the speaker device illustrated in FIG. 1;

FIG. 6 is a diagram for describing an installation surface, a sound emission surface, and a sound emission direction of the speaker device illustrated in FIG. 1;

[Explanation of symbols]

a: the surface of the housing, b: the surface of the housing (installation surface for vertical installation), s
DESCRIPTION OF SYMBOLS 1 ... Surface of a housing (sound emission surface), s2 ... Surface of a housing, s3 ... Surface of a housing (installation surface at the time of horizontal installation), 1 ... Headphone terminal, 2
L, 2R: audio input terminal, 3: A / D (analog / digital) conversion circuit, 4: audio signal processing unit, 5: ROM, 6
... SRAM, 7 ... D / A (digital / analog) conversion circuit, 8 ... Audio power amplifier, 9 ... Headphone plug, SPL ... Left channel speaker, SPR ... Right channel speaker, 11 ... Power on / off switch, 21 ...
Volume adjustment knob, 31, 32: Mode switch, 33, 34: Mode switch, 40: LE
D (light emitting diode) control unit, 41, 42 ... LED, 4
3, 44… LED

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5D017 AE22 AE24 AF07 5D018 AF01 5D020 AC01 5D045 BA02

Claims (5)

[Claims] 1. A speaker having a polyhedral housing, wherein a speaker is provided so that one surface of the polyhedral housing is a sound emitting surface for emitting sound. The case in which the angle between the first surface of the case and the sound emitting surface whose angle is a first angle is a second angle different from the first angle A speaker device, wherein each of the second surface and the second surface can be used as an installation surface. 2. The speaker device according to claim 1, wherein the first angle is a right angle, and the second angle is an acute angle. 3. The speaker device according to claim 1, wherein an operation means for receiving an instruction input from a user is provided on a portion of the housing facing the second surface. A speaker device characterized by the above-mentioned. 4. The speaker device according to claim 1, wherein the polyhedral housing is formed to have a substantially triangular prism shape, and A speaker device provided with an operation means for receiving an instruction input from a user at a top portion facing the surface of the speaker device. 5. The loudspeaker device according to claim 3, further comprising: a speech speed conversion unit configured to convert an input voice signal into a voice signal having a low voice speed; A speaker device for receiving an instruction input for instructing a target speech speed to a conversion means.