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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of the present invention. 1 ... part
of the speaker, 2 ... direct mixing tube, 3 ... indirect mixing tube, 4 ... extension tube, 5 ... earpiece
[Detailed description of the invention] Although the housing situation of these days is becoming
more and more necessary for stereo and dohorn, the conventional headphones have the
discomfort of being heard the stage backward and the disadvantage of being localized in the
head, There was nothing to position in front of the eyebrow completely. Also, to the stereophonic
stereo outside of the prior application No. 52-80672, the dohorn is a direct sound on the face
assuming that the stereo is a mesh of sound due to the H-shaped structure in which the left and
right speakers face on both ears. There is a drawback that the sound is localized in a semicircular
shape in front of the face because the ratio of sound distribution to the left and right is
unbalanced because it is too strong to the ear. For example, from the sounds of the left and right
bands, the voice of the center singer that should be on the front is (1) the ear / l ')' 122
unnaturally localized in reverse It is shaped like pushing the feeling to the front as it is. If the
distance between the left and right speakers is narrowed, and if the time difference is reduced, it
will be improved somewhat, but on the contrary, there is a drawback that the sense of expansion
of the stereo fades. The present proposal is intended to eliminate the above-mentioned
drawbacks, and to improve the normal front localization and the sense of perspective, the sense
of spread, the feeling of space Z, to a more clearer sense of localization than that of 1. The idea is
to apply the principle of obtaining a sense of distance from a button, such as a time difference
sound depending on the direct sound and the angle of the left and right ears, and an indirect
sound that reflects on the wall etc. to reach the ear. In this case, the present invention obtains the
sense of distance between the two speakers, ie, the speakers themselves, and combines stereos
from that point as a base point for front localization. If the proposal is explained in the drawing,
the right and left stereo speakers + 11 + 1 + are mounted at right angles to the sound
transmission tube as shown in the figure in a single U-shaped sound transmission tube so that
the direct sound is strongly heard by the ear Of the sound distribution ratio of (1) and (2)
connecting the mixing tube 2 on the opposite line. In this case, for example, the sound of the left
speaker 1 passes through the extension tube 4 directly to the left ear as a direct sound and then
the sound of the right speaker 1 'passes directly through the mixing tube 2 and the extension
tube 4. Then, it is part of 2 (I reach the left ear with a time difference. Further, the sound of the
left speaker 1 bypasses the direct mixing tube 2, the indirect mixing tube 3 and the extension
tube 4 and reaches the left ear as an indirect sound having a time difference of 2.5 parts. Also,
the sound of the right speaker-1 'bypasses 3.4 and enters the left ear as an indirect sound having
a time difference by the difference of the lengths of 6 and 2. The right ear is also the same in
principle as the left ear. According to the above-mentioned structure, the principle of nature with
multiple time differences is close, so the combined effect makes the normal front localization and
the sense of right and left spread more magnified, and the sense of perspective of each musical
instrument blurred with the external speaker The sense of direction is reproduced as it gets in
This is similar to the principle that if a photographic film is used to make a small copy, it
becomes clearer than the original. (3) According to the present invention, even with a simple
stethoscope type using earphones, there is a feature that the front position localization with
sufficient force can be enjoyed casually.