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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a conventional example
and FIG. 3 is a diagram showing the directivity pattern of a speaker for the tremolo, and FIG. 3 is
a perspective view of one embodiment of the present invention. FIG. 5 shows the directivity
pattern of the tremolo speaker and FIG. 5 is an electric circuit diagram of the above embodiment.
1・・・・・・スピーカボックス、2. ...... speaker for bass, 7.8 ...; - the partition plate, 9.10 ......
horn, 11.12 ...... tremolo speaker, 15.16 ...... tremolo modulator, 17 ...... modulation signal
generator. 18.19・・・・・・パワーアンプ。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker system,
and more particularly to a speaker system used in combination with an electronic musical
instrument or the like, in which tremolo modulated sound is more effectively produced. In
general, in electronic musical instruments, various sound effects such as tremolo, vibrato,
unsample, celeste, etc.) are applied, and among them, two tremomos have the ease of applying
amplitude modulation and phase modulation to musical tone signals. It is most effective to
reproduce the / 3 /, 39012 sound signal with a plurality of speakers arranged spatially apart, so
that the reproduced sound is rotated among the plurality of speakers. For this reason, as shown
in FIG. 1 conventionally, in addition to the normal speaker 2, the tremolo speakers are
attached to the speaker box 1 facing in different directions, and these speakers 3 to 3 are
mounted. A tone signal with tremolo modulation is supplied to 6. In this way, the sound
reproduced from the speakers 3 to 6 sounds as if it were rotating in the direction of the arrow in
FIG. 1, and a good tremolo effect can be obtained. However, in such a configuration, the
directivity of each of the speakers 3 to 6 is too sharp as shown by D in FIG. 2 because only the
direction of the speakers 3 to 6 is changed. Therefore, the direction of the sound wave radiated
from each of the speakers 3 to 6 can not be recognized clearly enough, and there is a time when
the tremolo effect satisfying 9 g can not be obtained. The present invention provides a speaker
stem that solves such a problem. An embodiment of the present invention will be described with
reference to FIGS. 3 to 5. In FIGS. 3 and 4, the speaker box 1 is partitioned by the partition plates
7 and 8, and a speaker 2 for bass is attached to the front plate of the lower box. On the other
hand, fan-shaped horns 9 and 1o are provided at corners on the front of the box above the
partition plate 7 so as to widen toward the opening end, and the rear ends of the horns 9 and 10
are provided. There are speakers for tremolo 1.12. FIG. 5 shows the internal electric circuit, and
the tone signal is supplied to the tremolo modulator 15.16 through the terminal 13.14, where
the tremolo modulation is performed based on the modulation signal from the modulation signal
generator 17. And amplified by a power amplifier 18.19 and then supplied to a tremolo speaker
1.12. In this configuration, the sound waves emitted from the tremolo speaker '11 .12 are limited
in their spread by the horns 9, 1 ° provided on the front face of their speakers 034 1 12.12 The
directivity is sharper than that of the prior art shown in FIG. 2, as shown by D in FIG.
As a result, the direction of the sound wave radiated from the speaker 11.12 can be clearly
recognized, and the feeling of the sound rotating between the speakers 11.12 can be clearly felt.
In the embodiment, the case where two speakers 11.12 are used as the tremolo speaker is
described, but three or more speakers may be used. As described above, according to the present
invention, the horns are respectively provided on the fronts of the tremolo speakers arranged in
different directions from each other, and the directivity of each speaker is sharpened by this
horn. It is possible to more effectively reproduce the tremolo signal with the dynamic change and
the phase change.
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jps57131083, description
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