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JP2007325069

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DESCRIPTION JP2007325069
[PROBLEMS] To provide a multi-channel earphone capable of further simulating a realistic
surround sound. An earphone unit (30) attached to the ears of two users. The earphone unit 30
comprises a housing 31 capable of completely covering the ear, an intermediate loudspeaker 32
mounted in the middle of the housing 31 corresponding to the position of the ear, and a housing
31 corresponding to the front of the ear It comprises a front loudspeaker 33 mounted, a rear
loudspeaker 34 mounted in the housing 31 to correspond to the rear of the ear, and a heavy bass
loudspeaker 35 mounted in the middle of the housing 31. The sound emitting surface 331 of the
front loudspeaker 33 faces the front 41 of the ear contour 40 and the sound emitting surface
341 of the rear loudspeaker 34 faces the back 42 of the ear contour 40. [Selected figure] Figure
4
マルチチャンネルイヤホン
[0001]
The present invention relates to an earphone, and more particularly to a multi-channel earphone
having a surround effect.
[0002]
The known earphone 10 has a front loudspeaker 12, an intermediate loudspeaker 13 and a rear
loudspeaker 14 arranged in parallel in a housing 11 as shown in FIG. 1 and is surrounded by the
front loudspeaker 12 and the rear loudspeaker 14. Simulate the before and after sound field
effect separately.
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1
Another known multi-channel earphone 20 has a front loudspeaker 22, an intermediate
loudspeaker 23, and a rear loudspeaker 24 in a housing 21, as shown in FIG. The feature is that
the sound emitting surfaces of the front loudspeaker 22 and the rear loudspeaker 24 are
separately arranged outward and have an angle between the central axis and the axis of the
intermediate loudspeaker 23. In any of the first and second types of known earphones 10 and
20, the sound transmission direction of the front and rear loudspeakers is slightly different from
the sound transmission direction of the actual surround. In the real surround, the sound source
of the forward sound effect is positioned in front of the user so that the sound wave travels
forward of the user, and the sound source of the rear sound effect is positioned behind the user,
so the sound wave is behind the user Head towards Therefore, the best surround is shown in Fig.
3. The front sound effect is between 50 degrees and 70 degrees in front of the user, the rear
sound effect is between 50 degrees and 70 degrees in back, and both left and right sides are left
and right It is a range of sound effects. There is a disadvantage in terms of simulated surround
effect since the transmission direction of the sound wave is not taken into consideration in the
known arrangement of the front and rear loudspeakers of the multi-channel earphone.
[0003]
The main object of the present invention is to provide a multi-channel earphone which can
further simulate realistic surround.
[0004]
In order to achieve the above-mentioned object, the multi-channel earphone according to the
present invention comprises an earphone unit worn on both ears of two users.
The earphone unit has a housing capable of completely covering the ear, an intermediate
loudspeaker mounted at the middle of the housing to correspond to the position of the ear, and a
front loudspeaker mounted within the housing to correspond to the front of the ear And a rear
loudspeaker mounted in the housing to correspond to the rear of the ear, and a deep bass
loudspeaker mounted in the middle of the housing. The feature is that the sound emission
surface of the front loudspeaker faces the front of the contour of the ear, and the sound emission
surface of the rear loudspeaker faces the back of the contour of the ear. As a result, it is possible
to further bring the sound wave transmitted from the front and rear loudspeakers to the ear
closer to the sound wave of the realistic surround sound, and to obtain a drastic sound effect.
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2
[0005]
Hereinafter, an embodiment of the present invention will be described based on the drawings.
The description of the drawings is as follows. FIG. 4 is a schematic view showing the structure of
an embodiment of the present invention. FIG. 5 is a schematic view showing a cross-sectional
structure taken along line 5-5 of FIG. The multi-channel earphone according to the present
invention includes an earphone unit attached to both ears of two users. The earphone unit 30
includes the following as shown in FIG. 4 and FIG.
[0006]
The housing 31 completely covers the ears and can form a sound isolation effect. An
intermediate loudspeaker 32 is mounted in the middle of the housing to correspond to the
position of the ear. The front loudspeaker 33 is mounted in the housing to correspond to the
front of the ear, with its sound emitting surface 331 facing the front 41 of the ear contour 40
and penetrating the central axis 332 of the sound emitting surface 331 and the nose of the
human body An angle 閘 1 between the head and the simulated vertical line 50 dividing the head
into left and right sides is 35 degrees or less.
[0007]
A rear loudspeaker 34 is mounted in the housing to correspond to the back of the ear, with its
sound emitting surface 341 facing the back 42 of the ear contour 40 and with the central axis
342 of the sound emitting surface 341 and the said vertical 50 Is less than 35 degrees. A heavy
bass loudspeaker 35 is mounted in the housing to be located below the middle loudspeaker 33.
In this embodiment, by changing the arrangement angle of the front and rear loudspeakers, the
transmission path of the radiated sound wave is brought close to the actual surround sound field
to obtain a drastic acoustic effect.
[0008]
It is also possible to arrange the vibrator 36 in the housing. In particular, it can be arranged
behind the middle loudspeaker 32 and combined with the heavy bass loudspeaker 35 to make
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3
the earphones produce a vibration effect. For example, if the deep bass frequency is 120 Hz or
less, an oscillating wave is generated. At the same time, it is possible to set so that an oscillating
wave is generated when the output volume of the deep bass reaches a predetermined value. The
earphone according to the present embodiment holds the stationary state when listening to the
low tone, and generates the vibration effect along with the sound output when the volume is
equal to or higher than the set value and the deep bass frequency is equal to or lower than a
predetermined frequency. It is possible to achieve a sense of reality. Although this embodiment
changes only the arrangement angle of the front and rear loudspeakers, it is possible to obtain an
effect of making the sound source accurate, so it is possible to give the viewer a good sense of
localization. Also, the earphone according to the present embodiment, by arranging the abovementioned vibrator, enables the viewer to enjoy the superior sound.
[0009]
It is a schematic diagram which shows a known multi-channel earphone. FIG. 5 is a schematic
view showing another known multi-channel earphone. It is a schematic diagram which shows the
best arrangement ¦ positioning angle of a surround. FIG. 1 is a schematic view showing a
structure of a multi-channel earphone according to an embodiment of the present invention. FIG.
5 is a schematic view showing a cross-sectional structure taken along line 5-5 of FIG. 4;
Explanation of sign
[0010]
30 earphone units, 31 housings, 32 middle loudspeakers, 33 front loudspeakers, 331 sound
emitting surfaces, 332 central axes, 34 rear loudspeakers, 341 sound emitting surfaces, 342
central axes, 35 heavy bass loudspeakers, 36 vibrators, 40 ear contour, 41 front, 42 back, 50
simulated vertical lines
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