WO2008012882A1

WO2008012882A1 - Voice output device and sound apparatus containing device

Info

Publication number: WO2008012882A1
Application number: PCT/JP2006/314802
Authority: WO
Inventors: Michiaki Hamada; Yoshikazu Nagao; Shirokazu Yazaki
Original assignee: Pioneer Corporation; Pioneer Marketing Corporation
Priority date: 2006-07-26
Filing date: 2006-07-26
Publication date: 2008-01-31
Also published as: JP4838846B2; JPWO2008012882A1

Abstract

A voice output device (100) comprises a speaker (101) outputting voice, and a curved surface member (102) disposed oppositely to the speaker (101) and having one end side curved in the direction receding from the speaker (101) as compared with the other end side. The sound apparatus containing device (200) comprises the voice output device (100) disposed such that the other side where the distance between the speaker (101) and the curved surface member (102) is longer as compared with the one end side is located on the listening object side, and a containing member (201) for containing a controller which delivers a voice signal related to a voice outputted from the voice output device (100) to the voice output device (100). Mechanical impression given to the listener from the voice output device (100) or the sound apparatus containing device (200) is reduced, and a good sound field can be formed over a wide range without deteriorating indoor interior and without limiting the listening place.

Description

Specification

Audio output device and acoustic device accommodation device

Technical field

TECHNICAL FIELD [0001] The present invention relates to an audio output device that outputs audio and an audio equipment housing device that houses an audio equipment including the audio output device. However, the use of the present invention is not limited to the above-described audio output device and acoustic device housing device.

Background art

Conventionally, there has been an audio output device that outputs audio by vibrating a speaker cone or baffle plate based on an audio signal amplified by an amplifier. Such an audio output device is generally arranged with a speaker cone or a baffle plate or the like, which is an audio output source in the audio output device, facing the listening target side.

[0003] Conventionally, by using a plurality of such audio output devices, the sound output device arranged at a plurality of locations in a room is adjusted and the output timing of the sound is adjusted by adjusting the sound output timing. For example, a good sound field was created for the listener. Conventionally, as a technique for forming a good sound field, there are techniques described in Patent Documents 1 to 3, for example.

[0004] Patent Document 1: Japanese Patent Laid-Open No. 6-90494

Patent Document 2: Japanese Utility Model Publication No. 5-88090

Patent Document 3: JP 2000-152364 A

Disclosure of the invention

Problems to be solved by the invention

[0005] However, as described above, in the conventional audio output device, the speaker cone and the baffle plate are disposed so as to be exposed on the listening target side, and thus an inorganic impression is given to the viewer. For example, there is a problem that there is a concern of harming the interior of the room without being in harmony with surrounding furniture. On the other hand, when the audio output device is placed at a position where it cannot be seen by the listener, there is a problem that the sound quality deteriorates due to the muffled output sound. Such a problem is caused by the technology described in Patent Document 1 described above. But it was the same.

[0006] In addition, among the conventional techniques described above, the techniques described in Patent Documents 2 and 3 form a sound field that is optimal in a specific place such as in the vicinity of a sofa in a room. An example of the problem is that a good sound field is not necessarily formed outside the specific place!

Means for solving the problem

[0007] The audio output device according to the invention of claim 1 is disposed so as to oppose the speaker that outputs sound, and the one end side is curved in a direction in which the speaker is separated from the other end side more than the other end side. And a curved member.

[0008] The audio equipment housing device according to the invention of claim 11 is arranged such that the distance between the speaker and the curved member is set to the listening object side at the other end side that is separated from the one end side. And an accommodating member that accommodates a control device that outputs an audio signal related to the audio output by the audio output device to the audio output device. Brief Description of Drawings

FIG. 1 is a front view showing an audio output device of an embodiment.

FIG. 2 is a front view showing an example of the audio equipment housing device according to the embodiment of the present invention.

FIG. 3 is a perspective view showing the stereo apparatus of the first embodiment.

FIG. 4 is a front view (No. 1) showing the stereo apparatus of the first embodiment.

FIG. 5 is a perspective view showing an audio output device.

FIG. 6 is a perspective view showing the sound output device with the top plate removed.

FIG. 7 is a cross-sectional view showing an audio output device.

[FIG. 8] FIG. 8 is an explanatory diagram (part 1) illustrating a state of propagation of sound output from the sound output device.

[FIG. 9] FIG. 9 is an explanatory diagram (part 2) illustrating a state of propagation of sound output from the sound output device.

[FIG. 10] FIG. 10 is an explanatory diagram (part 3) illustrating a state of propagation of sound output from the sound output device. [FIG. 11] FIG. 11 is an explanatory diagram (part 4) illustrating a state of propagation of sound output from the sound output device.

FIG. 12 is a front view (No. 2) showing the stereo device.

FIG. 13 is a front view showing a comparative stereo apparatus.

FIG. 14 is a front view showing an audio output device included in the stereo apparatus of the second embodiment.

FIG. 15 is an explanatory diagram (part 5) illustrating the state of propagation of the sound output from the sound output device.

FIG. 16 is an explanatory diagram (part 6) illustrating the state of propagation of the sound output from the sound output device.

Explanation of symbols

[0010] 100 audio output device

101 speakers

102 Curved member

103 bass speaker

104 Middle and high tone speakers

105 Flat part

106 Curved surface

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of an audio output device and an audio equipment housing device according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a front view showing an audio output device of an embodiment. As shown in FIG. 1, the audio output device 100 according to the embodiment includes a speaker 101 that outputs audio and a curved surface member 102. The speaker 101 includes a low-frequency speaker 103 that outputs low-frequency sound and a middle-high sound speaker 104 that outputs medium- and high-frequency sound. The middle / high tone speaker 104 is arranged closer to the listening object than the bass speaker 103.

The curved surface member 102 is disposed so as to face the speaker 101 and has a shape in which one end side is curved in a direction away from the speaker 101 more than the other end side. Curved surface member 102 It is curved so that it is away from the speaker 101 toward the listening object side. The curved surface member 102 includes a flat surface portion 105 that faces the bass speaker 103 and a curved surface portion 106 that curves at a position facing the mid-high sound speaker 104. The curved surface member 102 may be a quadratic curved surface or a cubic curved surface.

[0014] In the audio output device 100, the position on the front side in FIG. 1 (the side opposite to the low-frequency speaker 103 with the middle-high frequency speaker 104 in between) is the sound in the space between the speaker 101 and the curved surface member 102. The opening is open to the outside of the output device 100. The opening, the speaker 101, and the curved member 102 form a horn-shaped space between the speaker 101 and the curved member 102.

Further, in the audio output device 100, the position on the upper side of the paper surface in FIG. 1 is an opening that opens the space between the speaker 101 and the curved surface member 102 to the outside of the audio output device 100. Further, in the audio output device 100, the back side of the sheet in FIG. 1 (the side opposite to the middle / high tone speaker 104 with the bass speaker 103 in between) is the space between the speaker 101 and the curved surface member 102 of the audio output device 100. The opening is open to the outside.

Force not shown In the sound output device 100, the bottom plate 107 that supports the speaker 101 is provided with an opening that penetrates the bottom plate 107 in the thickness direction of the bottom plate 107. Through an opening provided in the bottom plate 107, at least a part of the bass speaker 103 is open to the outside of the audio output device 100.

[0017] FIG. 2 is a front view showing an example of an audio equipment housing apparatus that is useful in the embodiment of the present invention. As shown in FIG. 2, the acoustic device housing device 200 according to the embodiment of the present invention includes the above-described audio output device 100 and the housing member 201. Although not shown, the housing member 201 includes a housing space that houses a control device that outputs a sound signal related to the sound output from the sound output device 100 to the sound output device 100.

The storage member 201 includes a door member 202 that separates the inside and the outside of the storage space. The door member 202 may be, for example, a type that a user manually opens and closes, or may be a type that opens and closes electrically according to an open / close control signal output by a remote controller force. In addition, as a method for opening and closing the door member 202, for example, various methods such as a draw method, a double door method, and a flap method can be used. The audio output device 100 is disposed on both sides of the housing member 201 with the housing member 201 in between. The acoustic device housing device 200 is installed in a room or the like with the side of the audio output device 100 having the larger distance between the speaker 101 and the curved surface member 102 facing the listening target side.

The sound output device 100 outputs sound from the speaker 101 according to the control signal output to the sound output device 100 as well as the control device power. When the speaker 101 outputs sound, a part of the sound is directly propagated from the speaker 101 to the listener side, and another part of the sound is reflected by the curved surface member 102 and the force is also propagated to the listener side. Of the sound reflected by the curved surface member 102, the sound output from the middle / high tone speaker 104 (sound in the middle / high range) is reflected by the curved surface portion 106 and propagates in multiple directions. The sound output from the low-frequency speaker 10 3 (low-frequency sound) is amplified by a horn-shaped space formed between the speaker 101 and the curved surface member 102, and the sound is output from the opening on the front side of the paper in FIG. Output to the outside of the voice output device 100.

[0021] As described above, according to the audio output device 100 of the embodiment, the sound output directly from the speaker 101 and the sound output from the speaker 101 and reflected in multiple directions by the curved surface member 102 can be used in a wide range. Since the sound spread to the listener is propagated to the listener side, a good sound field can be formed over a wide range without limiting the listening location.

[0022] Further, according to the audio output device 100 of the embodiment, the external force can be seen from the speaker 101 by the presence of the curved surface member 102, so that the audio output device 100 provides a machine to the listener. A good sound field can be formed over a wide range without reducing the listening place without reducing the interior impression and reducing the interior impression by installing the audio output device 100. .

Thus, the listener can listen to high-quality sound at any place in the room without being aware of the presence of the sound output device 100.

Furthermore, according to the audio output device 100 of the embodiment, the low frequency range sound is amplified by the flat portion 105 facing the low frequency speaker 103, and the mid and high frequency range sound is reflected by the middle and high frequency speaker 104 in multiple directions. As a result, high-frequency sound can be propagated over a wide range, so there is no limit to the listening location without deteriorating the interior of the room. A good sound field can be formed over a wide range. Accordingly, the listener can listen to high-quality and high-frequency sound at any place in the room without being aware of the presence of the sound output device 100.

[0025] Further, according to the audio output device 100 of the embodiment, it is possible to propagate a wide range of high-frequency sound that does not interfere with output of mid-high sound that affects sound quality during listening depending on the output direction. Therefore, it is possible to form a good sound field over a wide range without limiting the listening place without deteriorating the interior of the room. Accordingly, the listener can listen to high-quality and high-frequency sound at any place in the room without being aware of the presence of the sound output device 100.

[0026] Also, according to the audio output device 100 of the embodiment, an opening provided on the front side or the upper side of Fig. 1 in which middle- and high-range sounds are not muffled inside the audio output device 100. Since the sound can be output to the outside of the sound output device 100 via the, a good sound field can be formed over a wide range without limiting the listening place without deteriorating the interior of the room. Thus, the listener can listen to high-quality and high-frequency sound at any place in the room without being aware of the presence of the sound output device 100.

[0027] Further, according to the audio output device 100 of the embodiment, the audio in the low frequency range output from the low frequency speaker 103 is not muffled, and the audio is output through the opening provided on the back side in FIG. Since the signal can be output to the outside of the output device 100, a good sound field can be formed over a wide range without limiting the listening location without deteriorating the interior of the room. Thus, the listener can listen to high-quality and high-frequency sound at any place in the room without being aware of the presence of the sound output device 100.

Furthermore, according to the audio output device 100 of the embodiment, the low frequency range sound directly output from the low frequency speaker 103 and the opening provided in the bottom plate 107 after being output from the low frequency speaker 103 are used. By spreading the low-frequency sound reflected from the floor and the like to the listener, the low-frequency sound can be expanded. Accordingly, the listener can listen to high-quality and high-frequency sound at any place in the room without being aware of the presence of the sound output device 100.

In addition, according to the audio output device 100 of the embodiment, the audio reflected by the curved surface portion 106 is received. Since it propagates preferentially to the listening target side, it is possible to preferentially form a good sound field relating to a wide range of high-frequency sound without limiting the listening location. As a result, the listener can listen to high-quality and high-frequency sound at any location in the room without being aware of the presence of the sound output device 100.

[0030] Also, according to the audio output device 100 of the embodiment, the curved surface member 102 can be easily manufactured by making the curved surface portion 106 of the curved surface member 102 into a secondary curved surface. The production of the audio output device 100 capable of forming a good sound field without limitation over a wide range can be facilitated.

In the audio output device 100 of the embodiment, the curved surface portion 106 of the curved surface member 102 is a quadric surface, but the present invention is not limited to this. The curved surface portion 106 in the curved surface member 102 may be a cubic curved surface. By forming the curved surface portion 106 of the curved surface member 102 as a cubic curved surface, it is possible to form a good sound field over a wider range without limiting the listening location. Accordingly, the listener can listen to high-quality and high-frequency sound at any place in the room without being aware of the presence of the sound output device 100.

[0032] Also, according to the acoustic device housing apparatus 200 of the embodiment, the acoustic device housing apparatus 200 is housed in the housing member 201 by disposing the control device in a state in which the speaker 101 is hardly visible from the outside. Reduces the mechanical impression given to the listener and installs the acoustic device accommodation device 200 to provide a wide range of good sound fields without limiting the listening location without deteriorating the interior of the room. Can be formed.

[0033] Also, according to the acoustic device housing apparatus 200 of the embodiment, since the control device and the audio output device 100 can be arranged as a unit, the sense of unity between the control device and the audio output device 100 is provided. Therefore, the acoustic device housing apparatus 200 can be handled as a piece of furniture. As a result, the mechanical impression given to the listener by the control device and audio output device 100 is further reduced, and by installing the acoustic device housing device 200, the listening location where the interior interior is not reduced can be limited. A good sound field that does not occur can be formed over a wide range.

Further, according to the acoustic device housing device 200 of the embodiment, the sound output device 100 is disposed on both sides of the housing member 201 with the housing member 201 in between, so that the control device and the sound output are performed. A good sound field can be formed over a wide range while maintaining the ease of handling by unitizing the device 100. As a result, the listener can listen to high-quality sound over a wider range without limiting the listening location.

Example

Next, examples of the above-described embodiment will be described. The example described below is an example in which the audio output device and the acoustic device housing device of the above-described embodiment are applied to a stereo device.

[Example 1]

FIG. 3 is a perspective view illustrating the stereo apparatus according to the first embodiment. As shown in FIG. 3, the stereo apparatus 300 according to the first embodiment is installed and used along a wall 301 in the room, for example. Hereinafter, the side facing the wall 301 in the stereo apparatus 300 will be referred to as the back side, and the side opposite to the wall (listening target) will be described as the front side.

FIG. 4 is a front view (part 1) illustrating the stereo apparatus of the first embodiment. As shown in FIG. 4, the stereo apparatus 300 according to the first embodiment includes a housing member 401 and an audio output device 402. The housing member 401 is provided in the central portion of the stereo device 300. The force accommodation member 401 includes an accommodation shelf on which a control device that outputs an audio signal to a speaker (see reference numeral 501 in FIGS. 5 and 6) included in the audio output device 402 is mounted.

In stereo device 300, a pair of draw-type doors 403 is provided on the front side of the storage shelf. The door 403 is slidably provided between a position for separating the storage shelf from the outside (closed position) and a position for opening the storage shelf to the outside (open position). Although not shown, the accommodation shelf is provided with a linear motor, and the door 403 is driven by the linear motor to slide between the closed position and the open position.

[0039] A linear motor is provided for each door 403, whereby the doors 403 are independently slid from the open position to the closed position or from the closed position to the open position. The control device and the door 403 stored in the storage shelf can be opened and closed using the above-described remote controller or the like.

[0040] The audio output device 402 is provided on both sides of the stereo device 300 with the accommodating member 401 in between. The housing member 401 and the audio output device 402 are located below the stereo device 300. Supported by the provided bottom plate 404! A top plate 405 is provided above the housing member 401 and the audio output device 402. Each of the bottom plate 404 and the top plate 405 may be a single member, or may be divided for each of the housing member 401 and the audio output device 402.

FIG. 5 is a perspective view showing the audio output device 402, and FIG. 6 is a perspective view showing the audio output device 402 with the top plate 405 removed. FIG. 7 is a cross-sectional view showing the audio output device 402. FIG. 7 shows a cross-sectional view of the audio output device 402 cut in the horizontal direction. Since all of the audio output devices 402 provided on both sides of the stereo device 300 have the same structure, in the first embodiment, the audio output device 402 provided on the left side of the accommodating member 401 in the middle direction in FIG. Will be described.

As can be seen from FIG. 5 to FIG. 7, the audio output device 402 includes a speaker 501 and a reflector plate 502 as a curved member disposed facing the speaker 5001. A horn-shaped space 503 is formed between the speaker 501 and the reflector plate 502 by the bottom plate 404, the top plate 405, the speaker 501, and the reflector plate 502. The speaker 501 includes a woofer 504 serving as a low-frequency speaker that outputs low-frequency sound, and a coaxial tweeter 505 serving as a mid-high sound speaker that outputs mid-range and high-frequency sound.

The audio output device 402 is disposed in a direction in which the baffle surfaces (see reference numeral 701 in FIG. 7) of the audio output devices 402 face each other with the housing member 401 in between. As a result, the woofer 504 and the coaxial tweeter 505 in the audio output device 402 are arranged side by side on the front side of the stereo device 300. The coaxial tweeter 505 is arranged closer to the listening target side (front side) than the woofer 504. Further, the coaxial tweeter 505 is arranged on the top side in the vertical direction with respect to the woofer 504.

[0044] A force woofer 504 and a coaxial tweeter 505, which are well-known techniques and will not be described in detail, have a voice coil, a magnet provided around the coil, and a voice coil, respectively. Speaker cone (see reference numerals 704 and 705 in FIG. 7). In the woofer 504 and the coaxial tweeter 505, the magnetic field generated around the voice coil by the magnets flows through the voice coil. Vibration is transmitted to the speaker cone by moving the flow left and right with respect to the winding direction of the voice coil, and sound is output by vibrating the air by the vibration of the speaker cone.

As shown in FIG. 7, the reflector plate 502 is provided at a position facing the baffle surface 701 of the speaker 501. The reflector plate 502 has a curved shape such that the front side is farther from the speaker 501 than the back side. The reflector plate 502 includes a flat surface portion 702 that faces the woofer 504 and a curved surface portion 703 that is curved at a position facing the coaxial tweeter 505.

[0046] The curved surface portion 703 of the first embodiment starts to bend from the center portion of the speaker cone 704 of the woofer 504, and is curved so as to be separated from the speaker 501 toward the front side. The curvature of the curved surface portion 703 can be appropriately set according to the size of the speaker cone 704 of the woofer 504 and the speaker cone 705 of the coaxial mirror tweeter 505.

[0047] On the opposite side of the woofer 504 with the coaxial tweeter 505 in between (the front side in the drawing in FIG. 5), an opening 506 is formed by a bottom plate 404, a top plate 405, a speaker 501, and a reflector plate 502. Is formed. The opening 506 opens a horn-shaped space 503 between the speaker 501 and the reflector plate 502 to the outside of the apparatus.

[0048] Further, on the opposite side of the coaxial tweeter 505 with the woofer 504 in between (the back side in the drawing in FIG. 5), an opening is formed by a bottom plate 404, a top plate 405, a speaker 501, and a reflector plate 502. 507 is formed. The opening 507 opens a horn-shaped space 503 between the speaker 501 and the reflector plate 502 to the outside of the apparatus.

The top plate 405 is provided with an opening 508 that opens a horn-shaped space 503 between the speaker 501 and the reflector plate 502 to the outside of the audio output device 402. The bottom plate 404 is provided with a lower duct 706 that penetrates the bottom plate 404 in the plate pressure direction of the bottom plate 404. The lower duct 706 realizes an opening that opens at least a part of the woofer 504 to the outside of the audio output device 402.

FIG. 8 and FIG. 9 are explanatory diagrams ((No. 1) and (No. 2)) for explaining the state of propagation of the voice output by the voice output device 402. FIG. FIG. 8 shows a state of propagation of the sound output from the woofer 504 in the sound output device 402 in the state shown in FIG. . FIG. 9 shows a state of propagation of the sound output from the woofer 504 in the sound output device 402 in the state shown in FIG. Next, the state of propagation of the sound output from the woofer 504 will be described with reference to FIGS.

[0051] As shown in FIG. 8, the sound output from the woofer 504 is amplified by the horn-shaped space 503 described above (see arrow A). The sound is output to the outside of the audio output device 402 through the opening 506 (see arrow A in FIG. 9). The amplified sound propagates to the listener who listens to the sound output from the sound output device 402. As a result, the listener can receive a sound that is more powerful and powerful than the sound that is output with the woofer 5004 facing forward.

More specifically, as shown in FIG. 9, the sound output from the woofer 504 is output from the opening 508 to the outside of the sound output device 402 while being amplified by the horn-shaped space 503. . The sound output to the outside of the sound output device 402 from the opening 508 also propagates the listener's upper force to the listener (see arrow B). Accordingly, the listener can receive a voice that is wider than the voice that is output in a state where the woofer 504 is arranged toward the front side.

[0053] The sound output from the woofer 504 is output from the lower duct 706 provided on the bottom plate 404 to the outside of the sound output device 402, and then reflected by the floor surface. The sound reflected by the floor surface also propagates to the listener's lower force. Accordingly, the listener can listen to a voice that is wider than the voice that is output in a state where the woofer 504 is arranged toward the front side.

[0054] Since the opening 507 is formed on the opposite side of the coaxial tweeter 505 with the woofer 504 in between, the sound output from the woofer 504 has the opening 506, 507, 508 force. The sound is output to the outside of the audio output device 402 (see arrows A to C). As a result, the sound output from the woofer 504 can be output outside the sound output device 402 without being muffled, so that the listener can listen to clear sound.

FIG. 10 and FIG. 11 are explanatory diagrams ((No. 3) and (No. 4)) for explaining the state of propagation of the voice output by the voice output device 402. FIG. FIG. 10 shows a state of propagation of the sound output from the coaxial tweeter 505 in the sound output device 402 in the state shown in FIG. It is shown. FIG. 11 shows a state of propagation of the sound output from the coaxial middle tweeter 505 in the sound output device 402 in the state shown in FIG. Next, using Fig. 10 and Fig. 11, we will see how the voice output from coaxial tweeter 505 propagates! I will explain.

As shown in FIG. 10 and FIG. 11, the sound output from the coaxial tweeter 505 is reflected directly from the coaxial tweeter 505 or reflected by the curved surface portion 703 of the reflector plate 502. Then, the sound is output to the outside of the audio output device 501 through the openings 506, 507, and 508 (see arrows a to f).

The output direction of the sound output from the coaxial tweeter 505 to the outside of the sound output device 402 differs depending on the position where the sound output from the coaxial tweeter 505 is reflected by the curved surface portion 703. Specifically, the sound output from the coaxial tweeter 505 reaches the curved surface portion 703 in a state of spreading radially from the coaxial tweeter 505, and therefore the incident angle with respect to the curved surface portion 703 is different. Since the reflection angle from the curved surface portion 703 varies depending on the incident angle, the sound output from the coaxial tweeter 505 can be reflected in multiple directions (see arrows a to c in FIG. 10).

[0058] Further, since the incident position is curved with respect to the baffle surface 701 of the speaker 501, even if the angle with respect to the facing direction of the speaker 501 and the reflector plate 502 is the same, the coaxial The reflection angle of the sound output from the coaxial tweeter 505 differs depending on whether the sound is output to the rear side or the front side with respect to the center of 505. For this reason, the sound output from the coaxial tweeter 505 can be reflected in multiple directions (see arrows d to f in FIG. 11).

[0059] The sound reflected in multiple directions by the reflector plate 502 propagates from multiple directions to the listener. As a result, the listener diffuses a wide range of sound directly output from the coaxial tweeter 505 and reflected from the reflector plate 502 in multiple directions by being output from the coaxial tweeter 505. Therefore, it is possible to listen to a voice that is wider than the voice that is output in a state in which the coaxial tweeter 505 is arranged toward the front side.

[0060] Of the sound incident on the reflector plate 502 from the coaxial tweeter 505, The sound reflected by the force toward the sky is output from the opening 508 to the outside of the sound output device 402. The sound output from the opening 508 to the outside of the sound output device 402 is transmitted from the upper side of the listener to the listener. As a result, the listener can listen to a voice that is wider than the voice that is output in a state where the coaxial tweeter 505 is arranged toward the front side.

[0061] Of the sound incident on the reflector plate 502 from the coaxial tweeter 505, the sound reflected by the tropics toward the celestial region is reflected by the bottom plate 404 to the celestial side, and the opening 50 6, output from the audio output device 402 through the opening 507 or 508. As a result, the listener can listen to a voice that is wider than the voice that is output in a state where the coaxial tweeter 505 is arranged toward the front side.

FIG. 12 is a front view (part 2) showing the stereo apparatus 300. As shown in FIG. 12, in the stereo apparatus 300, a grill net 1201 covering the opening 506 can be provided. By attaching the grill net 1201, the effect of reducing the mechanical impression given by the audio output device 402 can be expected.

Here, FIG. 13 is a front view showing a stereo device for comparison. As shown in FIG. 13, in the stereo device 1300 for comparison, the same speaker 501 as the speaker 50 1 included in the stereo device 300 is arranged so that the woofer 504 and the coaxial tweeter 505 face the front. ing. In FIG. 13, reference numeral 1301 denotes a grill net provided so as to cover the speaker 501.

[0064] As shown in FIG. 12 and FIG. 13, the stereo apparatus 300 of the first embodiment outputs sound in a state as viewed from the front of the stereo apparatus 300, compared to the stereo apparatus 1300 for comparison. The number of mechanisms that can be visually recognized from the outside can be reduced. Thereby, the mechanical impression that the stereo device 300 gives to the listener can be reduced.

[0065] Further, in the stereo apparatus 300 of the first embodiment, the speakers 501 are arranged sideways, so that the mechanical impression that the stereo apparatus 300 gives to the listener can be further reduced. Then, by reducing the mechanical impression that the stereo device 300 gives to the listener, it is possible to improve the interior of the stereo device 300 and synchronize with general furniture. [0066] As described above, according to the stereo apparatus 300 of the first embodiment, the low-frequency sound is amplified and the mid-high sound is diffused according to the sound range of the sound to be propagated. Since sound can be propagated over a wide range, a good sound field can be formed over a wide range without limiting the listening location without deteriorating the interior of the room. Thus, the listener can listen to high-quality and high-frequency sound at any location in the room without being aware of the presence of the stereo device 300.

[0067] Further, according to the stereo apparatus 300 of the first embodiment, by providing the openings 506, 507, 508, the sound output from the speaker 501 can be propagated to the listener without being muffled. A good sound field can be formed over a wide range without limiting the listening location without deteriorating the interior of the room. Thus, the listener can listen to high-quality and high-frequency sound at any location in the room without being aware of the presence of the stereo device 300.

[0068] Further, according to the stereo apparatus 300 of the first embodiment, the sound reflected by the curved surface portion 703 is preferentially propagated to the listening target side, so that the listening place where the interior interior property is not deteriorated is limited. A good sound field can be formed over a wide range. As a result, the listener can listen to high-quality and high-frequency sound at any place in the room without being aware of the presence of the stereo device 300.

Furthermore, according to the stereo apparatus 300 of the first embodiment, the reflector plate 502 can be easily manufactured by making the curved surface portion 703 of the reflector plate 502 a quadratic curved surface. As a result, the stereo apparatus 300 that can form a good sound field over a wide range without limiting the listening location can be manufactured while suppressing an increase in manufacturing cost.

[0070] Also, according to the stereo apparatus 300 of the first embodiment, by making the speaker 501 in the audio output apparatus 402 visible from the outside, the mechanical impression that the stereo apparatus 300 gives to the listener is reduced. In addition, by installing the stereo device 300, it is possible to form a good sound field over a wide range without limiting the listening place without deteriorating the interior of the room.

In addition, according to the stereo apparatus 300 of the first embodiment, the control device and the audio output device 402 can be arranged in a united manner, so that the sense of unity between the control device and the audio output device 402 can be maintained. The stereo device 300 can be treated as a piece of furniture. As a result, the mechanical impression given to the listener by the control device and the sound output device 402 is further reduced, and the installation of the stereo device 300 provides a listening place that does not deteriorate the interior of the room. A good sound field without limitation can be formed over a wide range.

[Example 2]

FIG. 14 is a front view illustrating an audio output device included in the stereo apparatus according to the second embodiment. Next, Example 2 of the above-described embodiment will be described. In the second embodiment, the same parts as those of the above-described first embodiment are denoted by the same reference numerals, and the description thereof is omitted. As shown in FIG. 14, the audio output device 1401 included in the stereo device 1400 of the second embodiment includes a woofer 504 and a coaxial tweeter 505 arranged with the baffle surface 1402 facing the top and bottom. Yes.

[0073] The coaxial tweeter 505 is closer to the front side of the stereo device 1400 than the woofer 504, and closer to the end side of the stereo device 1400 than the woofer 504 in the arrangement direction of the audio output device 1401 and the housing member 401. It is provided in the position. A reflector plate 1403 as a curved member is provided at a position opposite to the coaxial mirror tweeter 505 from the top side in FIG.

The reflector plate 1403 is provided with a curved surface portion 1404 that is curved so as to be separated from the coaxial tweeter 505 force toward the front side of the stereo device 1400. The curved surface portion 1404 is further curved so that the woofer 504 side is farther from the coaxial tweeter 505 than the end side in the arrangement direction of the audio output device 1401 and the housing member 401. That is, the curved surface portion 1404 provided in the reflector plate 1403 of Example 2 has a tertiary curved surface shape. A space 1405 between the bottom plate 404 and the top plate 405 penetrates in the front and back direction in FIG.

FIG. 15 and FIG. 16 are explanatory diagrams ((No. 5) and (No. 6)) for explaining the propagation of the voice output by the voice output device 1401. FIG. 15 and FIG. 16 show how the sound output from the coaxial tweeter 505 is propagated. Next, using FIG. 15 and FIG. 16, the state of propagation of the sound output from the coaxial tweeter 505 will be described. As shown in FIG. 15 and FIG. 16, the sound output from the coaxial tweeter 505 is directly from the coaxial tweeter 505 or the curved surface 1404 of the reflector plate 1403. The force is also reflected to the outside of the audio output device 1401.

[0076] The output direction of the sound output from the coaxial tweeter 505 to the outside of the sound output device 1401 varies depending on the position where the sound output from the coaxial tweeter 505 is reflected by the curved surface portion 1404. Specifically, the sound output from the coaxial tweeter 505 reaches the curved surface portion 1404 in a state where the coaxial tweeter tweeter force also spreads radially, so that the incident angle with respect to the curved surface portion 1404 is different. Since the reflection angle from the curved surface portion 1404 varies depending on the incident angle, the sound output from the coaxial tweeter 505 can be reflected in multiple directions.

[0077] Furthermore, since the incident position is curved with respect to the baffle surface 1402, the center of the coaxial mirror 505 is the same even if the angle of the speaker 501 and the reflector plate 1403 with respect to the opposing direction is the same. The reflection angle of the sound output by the coaxial tweeter 505 differs depending on whether the sound is output to the rear side or the front side. Therefore, the sound output from the coaxial tweeter 505 can be reflected in multiple directions.

The sound reflected in multiple directions by the reflector plate 1403 propagates from multiple directions to the listener. As a result, the listener diffuses a wide range of sound directly output from the coaxial tweeter 505 and reflected from the reflector plate 1403 in multiple directions by being output from the coaxial tweeter 505. Therefore, it is possible to listen to a voice that is wider than the voice that is output in a state where the coaxial tweeter 505 is arranged facing the front side.

[0079] As described above, since the curved surface portion 1404 of the reflector plate 1403 is a cubic surface, a better sound field can be formed over a wider range compared to the quadric surface. Reduce the mechanical impression that the device 1400 gives to the listener and install a stereo device 1400 to reduce the interior interior of the room, and to provide a good sound field without limiting the listening location Can be formed. As a result, the listener can listen to high-quality sound anywhere in the room without being aware of the presence of the stereo device 1400.

As described above, according to the audio output device 100 of the embodiment, the audio output device 10 By setting 0, it is possible to form a good sound field over a wide range without limiting the listening location without deteriorating the interior of the room. Thus, the listener can listen to high-quality sound at any place in the room without being aware of the presence of the sound output device 100.

Claims

The scope of the claims

[1] A speaker that outputs audio,

A curved member disposed opposite to the speaker and having one end curved in a direction away from the speaker than the other end;

An audio output device comprising:

[2] The speaker includes a low-frequency speaker that outputs low-frequency sound and a middle-high sound speaker that outputs middle- and high-frequency sound,

2. The audio output device according to claim 1, wherein the curved member includes a flat portion facing the bass speaker and a curved portion curved at a position facing the middle / high tone speaker.

[3] The audio output device according to [2], wherein the middle / high tone speaker is disposed closer to the listening object than the bass speaker.

[4] It is provided on the side opposite to the bass speaker with the middle and high tone speakers in between, and has an opening that opens a space between the speakers and the curved member to the outside of the apparatus. The audio output device according to claim 2 or 3.

[5] The apparatus according to claim 2 or 3, further comprising an opening provided on the heaven region improving side of the middle and high tone speaker and opening a space between the speaker and the curved member to the outside of the apparatus. Audio output device.

[6] It is provided on the opposite side of the middle / high tone speaker with the bass speaker in between, and has an opening that opens a space between the speaker and the curved member to the outside of the apparatus. The audio output device according to claim 2 or 3.

[7] The audio output device according to [2] or [3], further comprising an opening provided on the top side of the bass speaker and opening at least a part of the bass speaker to the outside of the device. .

[8] The audio output device according to [1], wherein the curved surface member is curved so as to be separated from the speaker as far as the listening target side.

9. The sound output device according to claim 1, wherein the curved member is a quadratic curved surface.

10. The audio output device according to claim 1, wherein the curved surface member is a cubic curved surface.

[11] The audio output device according to [1], wherein the distance between the speaker and the curved surface member is arranged with the other end side away from the one end side being the listening target side;

A housing member that houses a control device that outputs a sound signal related to the sound output by the sound output device to the sound output device;

An acoustic device housing apparatus comprising:

12. The audio equipment housing device according to claim 11, wherein the audio output device is disposed on both sides of the housing member with the housing member interposed therebetween.