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JPS59187288

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DESCRIPTION JPS59187288
[0001]
Brief description of the drawings
[0002]
FIG. 1 is an explanatory view of a vehicle speaker apparatus according to an embodiment of the
present invention, and FIG. 2 is a diagram showing the relationship between speakers, occupants
and front localization sound images when signals of left and right channels in phase are supplied
to the speakers 22L and 22R FIG. 3 is a graph showing the relationship between the frequency
and the phase difference and the sound pressure difference in the case of FIG. 2. FIG. 4 is a
speaker 22L and 22R supplied with signals obtained by converting the left and right channels
into opposite phases. FIG. 5 is a graph showing the relationship between the frequency, the
phase difference and the sound pressure difference in the case of FIG. 4, and FIG. 6 is an
embodiment of the present invention. FIG. 6 is a block circuit diagram of a speaker apparatus for
a vehicle according to an example & E. 10 ... front seat, 12L, 12R ... front speaker, 14 ... rear seat,
16L, 16R-... rear speaker, 18L, 18R ... rear door, 20L. 20R: middle speaker, 46: phase converter.
718R Fig. 2 18L 16L
10-05-2019
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