JPS61237597A - Speaker system - Google Patents

Abstract

PURPOSE:To enlarge a good audible range by disposing speaker systems comprised of plural speaker units at right and left sides and making the front of one speaker unit of the respective systems and the direction inclined by 15-45 deg. inward of the other units as a sound propagating axes. CONSTITUTION:Two sets of speaker systems 3a, 3b formed by speaker units 2a, 2b and 2a', 2b' are disposed at both of right and left sides. The sound propagating axes of the speaker units 2a, 2a' of the respective systems 3a, 3b are set to the front direction x of a television and the sound propagating axes of the speaker units 2b, 2b' are set respectively to the directions x', x'' inclined by 15-45 deg. inward. Thereby, a good audible range is enlarged to a network area.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a speaker system that can expand the listening range.

[Conventional technology]

FIG. 4 is a schematic diagram showing an example of a conventional speaker system, in which (1) is a cabinet.

(2a) and (2b) are the speaker units installed in this cabinet (11). Fig. 5 is a diagram showing the above conventional speaker system (4) installed on both sides of the TV (5). Figure 6 is a top view of Figure 5), left and right speaker systems +
4) is a diagram for easily explaining the spread of sound emitted from bt.

As shown in Fig. 4, a speaker system (4) in which two speaker units, for example, are arranged so that their sound radiation axes are in the front direction of the speaker system (4), is connected to a television (5) as shown in Fig. 5. When installed on both sides of the
The spread of the sound emitted from the left and right speaker systems (4) is as shown by the dashed-dotted lines in FIG. At this time,
The optimal listening range is the shaded area where the left and right speakers overlap.

In other words, if the listener is located within this shaded area,
You can watch the TV and listen to the sound with good sound image localization, as if the sound were coming from within the screen of the TV (5).

[Problem that the invention seeks to solve]

However, when using the conventional speaker system (4), the shaded area in Figure 6 is actually narrow.
If there are multiple listeners, some of them will definitely be outside the range of this shaded area.2 For example, if they are located outside the right side of this shaded area, that listener will be unable to listen to the speaker system on the right (4). ) becomes dominant, and the sound is heard only from the right side, and as a result, the sound image is not localized to the TV (5) screen.
There were 5 problems in that if I watched the TV (5) and listened to the sound in an extremely strange state, I would have no choice but to go K.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a speaker system capable of expanding the so-called optimal listening range, which is the range of the shaded area in FIG. 6 described above.

[Means for solving problems]

In the speaker system according to the present invention, the sound radiation axis of one of the two speaker units used is directed toward the front, and the sound radiation axis of the other speaker unit is directed toward the front at least within a horizontal plane. They are set and arranged in an angular range of 15 degrees to 45 degrees.

[Effect]

In the speaker system according to the present invention, the sound radiation axes of the respective speaker units are disposed on different axes, so that the sound radiation range is expanded, and as a result, the optimal listening range is expanded.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, +11 is the cabinet, (2a) is a speaker unit installed in the cabinet (1) so that the sound axis is in the front direction, and (2b) is a speaker unit installed in the cabinet (1) at a certain angle within the horizontal plane with respect to the front direction. This is a speaker unit that has a built-in design.

FIG. 2 is a diagram showing a case where the speaker system according to the present invention is installed on both sides of a television (5).

FIG. 3 is a plan view of FIG. 2 viewed from above, showing the speaker systems (3a) and (3b) according to the present invention installed on the left and right sides.
This is a diagram for explaining the expansion of the sound emitted from the bt.

In addition, in the speaker system C0IL) K installed on the left side of the TV (5) in Figure 2, the sound emission axis of the speaker unit is hidden, one is in the front direction, and the other one is in the front direction. The speaker system (3b) is to the right in the horizontal plane and is installed on the right side of the TV (5).
) has a sound radiation axis in a direction symmetrical to that of the left speaker system (3a).

Left speaker system (5a) and right speaker system (3b) when installed as shown in Figure 2
The sound field formed by this method is shown in Fig. 3. That is, in the left speaker system (3a), the speaker unit (2a) placed on the lower side emits sound in the front direction, and the sound emission axis of the speaker unit (2b) placed on the upper side is in the right direction. Since it is set at an angle, sound is radiated in that direction, and the range of sound radiation is expanded compared to the conventional case where the sound is radiated only in the front direction. Next, since the right speaker system (3b) is symmetrical to the sound emission range of the left speaker system (3a), the service area on the left side is expanded. In fact, if we listen to sound while looking at the TV screen (5) in the state shown in Figure 3, the sound image will be localized in the middle of the TV screen (5) anywhere within the shaded area. Otherwise, the range of viewing positions will be expanded.Here, the shaded area in FIG. 3 is the range where the sounds from the left and right speaker systems overlap.

Experiments have shown that the effect of so-called different-axis arrangement, which gives a certain angle to the sound emission axis of each speaker unit, is smaller than 15 degrees, and that the effect also tends to be smaller if it exceeds 45 degrees. It was confirmed that there is.

In the above embodiment, the sound radiation axis of the lower speaker unit of the two speaker units is in the front direction, and the sound radiation axis of the upper speaker unit is at a certain angle in the horizontal plane with respect to the front direction. However, even if the arrangement of the sound radiation axes of the upper and lower speaker units is reversed, the same effect as in the above embodiment can be achieved.

〔Effect of the invention〕

As described above, in this invention, the sound emission axis of each loudspeaker unit is set in the front direction and in a direction with a certain angle in the horizontal plane with respect to the front direction, so that the service area of the speaker system can be expanded. This provides an extremely effective speaker system that can expand the optimal listening range of the user.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing a speaker system according to the present invention, Fig. 2 is a diagram showing a case where the speaker system according to the invention is installed on both sides of a television, and Fig. 3 is a schematic diagram showing a speaker system according to the present invention.
FIG. 4 is a schematic diagram showing a conventional speaker system, and FIG. 5 is a plan view of the conventional speaker system shown in FIG. FIG. 6 is a plan view of the one shown in FIG. 5, and is a diagram for explaining the spread of sound emitted from a conventional speaker system, is cabinet t (2
') and (2b) are speaker units. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] In a speaker system having two or more speaker units having the same or partially the same reproduction frequency band, the sound radiation axis of at least one speaker unit is set to face the front, and the sound radiation axis of the other speaker units is set to face the front. A speaker system characterized in that the speaker system is set and arranged in an angle range of 15 degrees to 45 degrees in the same direction at least within a horizontal plane.