JPH04126778U - Acoustic presence experience device - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] Input an amplified signal in the low frequency range of music below 100 Hz, and use that signal to rotate a DC motor with an eccentric weight to create a sense of vibration in a concert hall with a realistic sense of acoustics. It is an attempt to obtain. [Structure] Acoustic input is input to a low-pass filter 3 that passes only low-frequency signals of 100 Hz or less, and the output signal from the low-pass filter 3 is amplified to rotate a DC motor 5 with an eccentric weight.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention allows you to control music using electrical signals in the bass range of 100Hz or less while listening to music. This is an attempt to provide something that allows you to experience the realism of Surthole.

0002

[Conventional technology]

Connect a low-pass filter to the audio signal input section that passes only signals corresponding to the low frequency range. Then, the output of the output section that operates in response to the signal from this low-pass filter is further As an acoustic presence experience device configured to control the drive unit using an amplified power source. is known under the product name Body Sonic, which is an application of the speaker cone drive unit. There is something.

0003

[Problem that the invention attempts to solve]

It is sold by Pioneer Corporation under the product name Body Sonic. This is similar to the cone drive of a speaker, using a moving coil using electromagnetic force. The device drives a diaphragm and applies the vibrations to the body, giving an acoustic sensation. However, in order to provide a sufficient experience, the input to the drive unit requires 20 watts. In order to do this, the music signal of several tens of milliwatts must be greatly amplified. Because it requires a powerful amplifier, it is expensive and difficult to popularize. Ta. Therefore, in this invention, we amplify the low frequency music signal of 100Hz or less and use it as a small DC motor. The motor is used as a power source to rotate, and an eccentric weight is attached to the motor shaft to control the rotation. The system is designed to provide an acoustic sensation through the vibration effect of the sound.

0004

[Means to solve the problem]

In order to solve the problems of the conventional products mentioned above, the present invention is designed to input to a low-pass filter, and only low-frequency signals below 100Hz are passed through a low-pass filter. output from the router, amplify this low frequency output signal, and use the amplified signal as the drive power source. This is configured to rotate a DC motor with an eccentric weight. In addition, in the stage before amplifying the output signal from the low-pass filter, there is a voltage adjuster for the output signal. A conditioning device has been added.

[0005]

【Example】

To explain the drawings showing one embodiment of the present invention, FIG. 1 shows a block diagram. Music made of low-frequency rhythm instruments such as bass, bass drum, bongos, etc. A signal is input from the acoustic device 1 via the amplifier 2 to the low-pass filter 3 . child The low-pass filter 3 passes only signals in the low frequency range of 100 Hz or less. and, The signal that has passed through this low-pass filter 3 is amplified by the motor drive circuit 4, and A DC motor with an eccentric weight attached to the rotating shaft, which is commonly used in massagers. It is configured to rotate the motor 5.

[0006] Therefore, when the low frequency signal level below 100Hz is 0 (zero), the DC motor Since the music is stopped, the sense of rhythm synchronization with the music is very good, so it is suitable for concert halls. You can get an immersive experience.

[0007] Reference numeral 6 is a voltage regulator for the DC motor drive power supply, and 7 is a voltage regulator for the DC motor drive power supply. Showing headphones for listening to music.

[0008]

[Effect of the idea]

In this invention, the low-pass filter is limited to 100Hz or less. Because it is considerably lower than 160Hz or less, which is said to be the conventional low frequency range, As a driving power source for a DC motor, the electric energy is large and the rotation speed of the DC motor is The start instantly becomes high speed (3000 RPM), and the ability to follow the rise of the music signal is improved. If the low frequency signal level below 100Hz is 0 (zero), the DC motor - is stopped, so you can enjoy an extremely good acoustic experience that is well synchronized with the music rhythm. can get. In addition, since the power source to drive the DC motor only needs to be about 1 watt, the above-mentioned body Because it is much smaller than the 20 watt drive power of Sonic (product name), the acoustic signal (several tens of milliwatts) is amplified to the drive power source and the amplification factor is extremely small. This makes the cost of the amplifier very low, and it is small and lightweight, making it popular. This makes it easier to spread the word.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the present invention.

FIG. 2 is an electrical circuit diagram.

[Explanation of symbols]

1 Sound equipment 2 Amplifier 3 Low pass filter 4 Motor drive circuit 5 DC motor with eccentric weight 6 Voltage regulator

Claims (2)

[Scope of utility model registration request] Claim 1: An electrical signal from an audio device is input to a low-pass filter that passes only signals in the low frequency range of 100 Hz or less, and a DC motor with an eccentric weight attached to the rotating shaft is driven by a power source that amplifies the output signal from the low-pass filter. An audio presence experience device characterized by being configured to be rotationally driven. 2. The acoustic presence sensing device according to claim 1, further comprising a voltage adjustment device provided before amplifying the output signal from the low-pass filter.