JPS5736083

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DESCRIPTION JPS5736083
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (a) shows an embodiment of the present
invention, and FIG. 1 (a) shows an embodiment of the mounting structure of the piezoelectric
vibrator. FIG. 2 shows a frequency characteristic of the speaker system of the present invention.
1: Bass speaker, 2: Passive diaphragm, 3: Piezoelectric vibrator.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker-in-onecharacter deletion theme using a passive diaphragm. The conventional variable diaphragm has a
function to expand the low frequency range by inverting the phase of the sound on the back
surface of the low frequency speaker, +9 blowing, иии I. The present invention is a speaker system
with the purpose of adding a function to reproduce a high range in addition to the conventional
function of expanding the low range, and a second purpose. A single-r. Water removal device was
made for this purpose, and the speaker / stem of the present invention is the same as the
embodiment shown in FIG. The piezoelectric vibration 94 to 32 is attached to the passive
diaphragm 2 to be phase-reversed, and the piezoelectric vibrator 3 has a structure in which a
signal r for high frequency sound is applied. In the same drawing, 4 in the drawing indicates Subi
Carbonx, 5 L indicates a low-pass filter, a blue filter, a blue filter 151-IIi bypass filter. However,
since the passive diaphragm 2 sets the radiation area large in order to obtain a predetermined
reproduction sound pressure by inverting the phase of the sound on the rear surface of the lowfrequency speaker-character-I + storage / 2, the weight becomes large. Alternatively, if the
piezoelectric image pickup device 3 is set to be lightweight and attached to the passive type
moving plate 2, a part of the passive type moving plate 2 vibrates, and high efficiency can be
reproduced in a high range. Fig. 2 shows the reproducibility 1 in the case where piezoelectric
vibration f- is attached to the upper surface of the central portion of a 30 cm diameter coneshaped passive type shooting plate in the embodiment speaker / system of the present invention;
The range of A indicates the range of reproduction by the passive diaphragm, the range of B
indicates the range of reproduction by the low-frequency speaker f, and the range of C indicates
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the range of reproduction by the passive vibration [U-w-plate and the piezoelectric vibrator. ?
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