JPS60204194A - Body sensing acoustic vibrator - Google Patents

Abstract

PURPOSE:To obtain a wide and natural vibrating sense by providing a vibrator where at least two diaphragms are vibrated in response to an electric signal so as to adjust independently the vibrating mode of each vibrator respectively. CONSTITUTION:Each vibrator 24 is connected via signal source 27, a low pass filter 28, a power amplifier 29 and a master variable resistor 30. A viriable resistor 34, a filter 35 and a power amplifier 36 are provided as to each vibrator between each vibrator 24 and the master variable resistor 30. The said variable resistor 34 is to adjust a low sound frequency electric signal; applied to each vibraor 24 via the master variable resistor 30 separated by the low pass filter 28 and the power amplifier 29 so that the vibrating level of each vibrator is coincident with a vibration equi-sensing level of a human body to which each vibrator contacts. There is no difference of vibrating sense of each human body part by making the vibration level of each vibrator 24 coincident with the vibration equi-sensing level of the human body in contact therewith and the vibration of almost equal sensing level is obtained at each human body part.

Description

[Detailed description of the invention] Technical field The present invention relates to a sensory acoustic vibration device.

BACKGROUND TECHNOLOGY Sensory acoustic vibration devices not only have the effect of acoustic devices such as speakers that transmit musical sounds through air propagation, but also use transducers to convert bass sounds in the range below the audible range into mechanical vibrations of parts that come in contact with the human body. The aim is to give listeners a rich sense of reality by allowing them to experience this directly.

Various specific configurations of the sensory acoustic vibration device have been proposed, and for example, a chair-type device has already been developed that allows the user to sit and relax while enjoying a realistic performance.

FIGS. 1 and 2 show a chair-type sensory acoustic vibration device that has already been developed.

As illustrated, the seating part 1G and backrest part 1b of the chair 1
Rectangular diaphragms 2 and 3 are housed inside, respectively.

Vibrators 4 and 5 are fitted into each of the diaphragms 2 and 3, respectively, for causing the diaphragms to vibrate in accordance with, for example, a low frequency electric signal. The vibrators 4 and 5 are configured such that, for example, the voice coil side is fixed, and a magnetic circuit serving as a driver unit reciprocates in response to a low-frequency electric signal. Further, the surface of each diaphragm is covered with a cushioning material 6 so that the diaphragms 2 and 3 do not come into direct contact with the listener's body. Each vibrating body 4 and 5 is driven by a power amplifier 9 built in a control box 8. Also provided within the control box 8 is a power amplifier 1 for driving a speaker 10 disposed in front of the chair 1, for example.

The power amplifier 11 is directly supplied with the audio signal output from the signal #12. The audio signal output from the signal #, I2, is also supplied to a thin resistor in the volume 13, one end of which is grounded. A signal derived from the slider of the resistor 2 of the volume 13 is supplied to the power amplifier 9 via the low-pass filter 14.

In the above-described sensory acoustic vibration device, even if the resistance value of the volume 13 is changed, the same level of low-frequency components of the audio signal is supplied to the vibrating bodies 4 and 5.

By the way, as shown in FIG. 3, the level of sensitivity to vibrations, etc. of each part of the human body is not constant. Therefore, as described above, when each part of the human body is vibrated at the same level, a difference in sensitivity occurs between each part of the human body. Further, although the vibrating bodies 4 and 5 have a low frequency characteristic, this does not necessarily match the vibration iso-sensitivity curves for the frequencies of each part of the human body shown in FIGS. 4 and 5. In the above-mentioned body-sensing acoustic vibration device, since the vibration sensation was experienced under such conditions, there was a problem in that it was not possible to obtain a wide and natural vibration sensation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and its purpose is to provide a sensory acoustic vibration device in which the level of vibration sensation in each part of the human body is equal, and therefore a spacious and natural vibration sensation can be obtained. The goal is to provide the following.

A sensory acoustic vibration device according to the present invention includes at least two diaphragms that are arranged adjacent to each other in a predetermined direction and can vibrate independently of each other, and a vibrating body that vibrates each diaphragm in accordance with an electric signal. (1) It is characterized in that the vibration mode of each vibrating body can be adjusted independently.

EXAMPLE Hereinafter, a chair-type sensory acoustic vibration device as an embodiment of the sensory acoustic vibration device according to the present invention will be described with reference to FIGS. 6 and 7.

As shown in the figure, a rectangular diaphragm 2 made of a lightweight, rigid, and load-bearing material such as polypropylene is provided in the seat 21α and backrest 21b of the chair 21.
2 is installed multiple times. Each of the nine diaphragms 22 is arranged in a predetermined direction, in this case, along the midline of the chair 1, in two rows on the left and right, nine each, close to each other, so that they can vibrate independently of each other. Each diaphragm 22 has a vibrating body 24 that vibrates each diaphragm according to, for example, a low frequency electric signal.
are each fixed. These vibrating bodies 24 are the diaphragm 22
It is fitted into an opening formed in the main surface of. The vibrating body 24 has a configuration in which, for example, the voice coil is fixed, and a magnetic circuit as a driver unit reciprocates in response to a low-frequency electric signal. In addition, each diaphragm 22 is attached to a frame or the like provided in the chair 21 together with the vibrating body 24.
They are attached via respective insulators 25.

Further, the surface of each diaphragm 22 is covered with a cushioning material 26 so as not to come into direct contact with the human body.

As shown in FIG.
7 via a low-pass filter 28, a power amplifier 29, and a master volume 30. These low-pass filter 28 and power amplifier 29 are built into the control box 31.

A knob 30α for the master volume 30 is provided on the control box 31.

Also provided within the control box 31 is a power amplifier 33 that drives a speaker 32 placed in front of the chair 21 or the like. The power amplifier 33 has a signal source 2
The audio signal output from 7 is directly supplied. A volume 34, a filter 35, and a power amplifier 36 are provided between each vibrating body 24 and the master volume 30 for each vibrating body.

The volume 34 is separated by a low-pass filter 28 and a power amplifier 29, and the master volume is 30.
The low frequency electric signal supplied to each vibrating body 24 via
This is for adjusting the vibration level of each vibrating body so that it matches the vibration sensitivity level of the human body part with which each vibrating body comes into contact. By making the vibration level of each vibrating body 24 match the vibration sensitivity level of the human body parts with which they come into contact, it is possible to create a difference in the vibration sensation in each part of the human body, so that each part of the human body has approximately the same sensation level. You can get the vibration.

The filter 35 adjusts the frequency characteristics of each vibrating body 24 and the vibration iso-sensitivity curve (
(see FIGS. 4 and 5). By matching the frequency characteristics of each vibrating body 240 with the vibration iso-sensitivity curve, a substantially flat frequency characteristic can be obtained intuitively.

In this embodiment, 18 diaphragms 22 and 18 vibrating bodies 24 are provided, but the number is not limited to these. Further, the vibration plate 22 and the vibration body 24 are connected to the chair 1.
However, the diaphragm 22 and the vibrating body 24 may be supported by being surrounded by shoes 737 and 26, respectively, without using the insulator 25. In addition, each adjustment of the vibration level and frequency characteristics of each vibrating body 24 is performed on the volume IJ, the -me 34, and the filter 35.
etc., but it is of course possible to perform the adjustment by using other electrical components, and it is also possible to adjust the characteristics of each vibrating body 24 itself by adjusting the vibration sensitivity level and vibration of each part of the human body. It may be made to match the iso-sensitivity curve.

Furthermore, although the example shows the case where the sensory acoustic vibration device is chair-shaped, the present invention is also applicable to bed-type, notebook-type, or clothing-type sensory acoustic vibration devices. Needless to say.

Effects As detailed above, the sensory acoustic vibration device i′ according to the present invention
In j:, at least two diaphragms are arranged in close proximity to each other along, for example, the midline of the listener's body and can vibrate independently of each other, and each diaphragm is made to vibrate in response to an electrical signal. A vibrating body is provided, and the vibration mode of each vibrating body, that is, the vibration level and frequency characteristics can be adjusted independently. By doing this, it is possible to approximately match the vibration level and frequency characteristics of each vibrating body with the vibration iso-sensitivity level and vibration iso-sensitivity curve of the human body part that each vibrator comes into contact with, respectively. Therefore, it is possible to obtain a wide and natural vibration sensation.

[Brief explanation of the drawing]

Figures 1 and 2 are diagrams showing an already developed sensory acoustic vibration device, Figures 3 to 5 are diagrams for explaining the vibration equal sensitivity level and vibration equal sensitivity curve of the human body, and Figure 6 is a diagram showing the vibration equal sensitivity level and vibration equal sensitivity curve of the human body. FIG. 7 is a perspective view including a partial cross section of the chair-type acoustic acoustic vibration device according to the present invention, and is a block diagram of the chair-type acoustic acoustic vibration device. Explanation of symbols of main parts 21... Chair 22... Vibration plate 24... Vibrating body 28... Low-pass filter 29.33
,36...Power amplifier 30.34...Volume 35...Filter applicant Pioneer Co., Ltd. agent Patent attorney Motohiko Fujimura

Claims (3)

[Claims] (1) at least two J sliding plates that are arranged close to each other in a predetermined direction and can vibrate independently of each other;
A sensory acoustic vibration device comprising a vibrating body that vibrates the diaphragm according to an electric signal, and the vibration mode of each vibrating body can be adjusted independently. (2) The body-sensing acoustic vibration device according to claim 1, wherein the vibration level of each vibrating body is made to substantially match the vibration sensitivity level of the human body part with which each vibrating body comes into contact. (3) The bodily-sensible acoustic vibration according to claim 1 or 2, characterized in that the frequency characteristics of each vibrating body are made to substantially match the vibration iso-sensitivity curve of the human body part with which each vibrating body comes into contact. Device.