JPH0824719B2 - Relaxing audio equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relaxing acoustic device having a high sense of realism and an effect of doubling a feeling of relaxation.

[0002]

2. Description of the Related Art A portable audio device or a room-installed audio device, which collectively refers to a cassette tape type headphone / stereo player, a compact disc type headphone / stereo player, an FM radio receiver, and the like, is miniaturized with the progress of semiconductor technology. With the realization of high performance, the degree of popularization is rapidly increasing. With regard to these conventional audio devices, research is focused exclusively on improvements in acoustical and handling aspects such as compactness, high sound quality, and long life, which are convenient in terms of portability and installation space. It is the actual situation.

[0003]

SUMMARY OF THE INVENTION An acoustic device of this type is
For example, by listening to music, it has a merit of being able to relax to a certain degree and stabilizing emotions, but even if the quality and performance are improved, it is possible to further improve the user's mind and body. In the modern society with many stimulating elements, which is not related to enhancing the relaxation effect, and when seeking a device that can relieve stress especially in the modern society, this kind of conventional acoustic device is sufficient. It is impossible, and the reality is that one must rely on special dedicated devices and equipment for relaxation promotion.

The present invention has been made in view of the above circumstances, and an object of the present invention is not only to provide acoustic effects to the original entertainment aspects of a device such as listening to music but also to provide a relaxing feeling. It is an object of the present invention to provide a relaxing acoustic device having a novel structure which can be expected to have a doubling effect and the development of an ability including an unknown human ability.

[0005]

The present invention has the following configuration to achieve the above object. That is, the present invention synchronously oscillates a power supply unit, a sound signal conversion unit that converts a received signal into element sound signals of three systems and outputs the same, and three types of sine wave audible frequency signals having a frequency difference of several Hz. Of the audible frequency oscillating section, the element sound signals output by the sound signal converting section, and the three kinds of sinusoidal audible frequency signals output by the audible frequency oscillating section are introduced to synchronize the signals. In addition, and for each system, the amplification unit that outputs the sound signals of three systems by superimposing it, and the sound signals of three systems introduced from this amplification unit are distributed to three or more acoustic vibrators and converted into sound. And an acoustic vibrating section for outputting, wherein the acoustic vibrating section is provided so as to form a field in which sounds outputted from the acoustic vibrating section resonate with each other.
It is a relaxing acoustic device characterized by comprising frequency adjusting means for varying the fundamental oscillation frequency and the frequency difference between the three types of sine wave audible frequency signals.

The present invention also has a frequency difference of several Hz between the power supply section and the sound signal conversion section which receives the stereo sound signal and converts it into the element sound signals of the three systems of the left side, the center side and the right side and outputs it. An audio frequency oscillating unit that synchronously oscillates and outputs three types of sine wave audio frequency signals, each element sound signal output by the sound signal converting unit, and 3 output by the audio frequency oscillating unit.
A sine wave audible frequency signal of a kind is introduced, and those signals are output synchronously and as a sound signal superimposed for each system, and a corresponding center of each sound signal introduced from this amplifier 3 placed at equal angles and distances from position
A stereo acoustic vibrating section which converts the sound into sound by a base acoustic vibrator and outputs the sound. The stereo acoustic vibrating section is provided so as to form a field in which sounds output from the stereo vibrating resonate with each other. The frequency oscillating unit is a relaxing acoustic device characterized in that it is provided with frequency adjusting means for varying the fundamental oscillation frequency and the frequency difference between the three types of sine wave audible frequency signals.

The present invention also provides an overtone generator, a voice synthesizer,
At least one reverberation sound generator is attached in association with the amplification section, and each stereo element sound signal having at least one of overtone, speech synthesis, and reverberation can be output from the amplification section. It is an audio device. The present invention also selects at least one of each stereo element sound signal output by the sound signal conversion unit and three types of sine wave audio frequency signals output by the audio frequency oscillation unit, and the amplification unit. The relaxing acoustic device is characterized by comprising an input selecting means for inputting to.

[0008]

According to the present invention having the above-described structure, the listener is provided with three positions, from the acoustic vibration parts such as speakers and headphones to the left and right ears, the forehead, the skin on the back of the head, and the central part of the body such as bones. The sound information such as music and audible frequency is transmitted directly through or from the surrounding three-dimensional space. At that time,
At the same time, a frequency difference of several Hz of 2, 4, 6, 8 etc. 3
A sine wave audio frequency signal of the species is heard. as a result,
The brain synchronizes with the frequencies of the three kinds of sine wave audible frequency signals, and the activity state changes. For example, 150Hz on the left ear,
When a sine wave signal of 154 Hz is heard in the center of the body and 158 Hz is heard in the right ear at an appropriate volume, the subject is guided to an electroencephalogram state of 4 Hz to 8 Hz.

Speaking of 8 Hz, it corresponds to the alpha wave of the brain waves when a person relaxes. In this way, it is possible to select an appropriate frequency difference and arbitrarily induce brain waves such as α, θ, and β waves, and this can be easily performed by operating the frequency adjusting means such as a volume. It has also been found that when a person is in the α-wave and θ-wave states, the implied barrier tends to be easily removed. Therefore, when psychological actions such as memorizing or understanding things become obscure, the obstacles such as likes and dislikes and preconceived ideas become obscure, and it is possible to deepen memory and understanding by learning for a short time. It will be.

According to the present invention, sound is propagated to the human body through the three parts of the left ear, the center of the body, and the right ear, so that these sounds resonate with each other so that the center of the sound is located at the center of the head. The sound field will be different, and it will be easier to guide the entire brain to the altered conscious state.
Further, according to the present invention, it is of course possible to operate the input selecting means to hear only the sound information such as music and the three kinds of sine wave audible frequency signals, and the sine wave alone has a sufficient relaxing effect. Although it is played, if you feel that this is a monotonous dislike, you can listen to it at the same time as the music as described above. In this way, it is possible to achieve multi-purpose use with a single audio device that is a partially improved version of the portable stereo audio device.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the electrical configuration of a stereo type relaxing acoustic device according to an embodiment of the present invention.
This relaxing acoustic device includes a power supply unit 1 including a transformer and a rectifier, and a so-called reproducing / recording unit including a magnetic head, a motor, etc., which receives a sound signal from a magnetic tape or the like and converts it into a stereo element sound signal. A so-called sound signal converting unit 2, an audio frequency oscillating unit 3 that is a main part characterizing the present invention, each stereo element sound signal output by the sound signal converting unit 2 and the audio frequency oscillating unit 3 described later output. The sine wave audible frequency signal is input and the signals are synchronously superimposed on each other by the left ear system, the central sensation system and the right ear system, and the power is amplified, and the amplification unit 4 superimposes them. -Converting each amplified stereo element sound signal to voice and outputting it to three systems of acoustic vibrators, for example, a stereo acoustic vibrating section 5 consisting of three speakers or headphones 5L, 5C, 5R. A have been, the power supply unit 1, the sound signal converter 2, the amplification unit 4, for stereophonic acoustic vibration unit 5 can be utilized in without major modifications members known like.

The audio frequency oscillator 3 includes a high frequency oscillator 10 such as a crystal oscillator, and the high frequency oscillator 10.
The left ear frequency downconverting circuit 8L and the right ear frequency downconverting circuit 8 that receive the signal output by the converter and convert it into an audible frequency signal
R, central sensation frequency down-converting circuit 8C, and three audible frequency signals output by each of the frequency down-converting circuits 8L, 8R, 8C are converted into sinusoidal audible frequency signals without distortion, and waveform correction for the left ear Circuit 9L, right ear waveform correction circuit 9
R, the central sensation waveform correction circuit 9C,
The three sine wave audible frequency signals are input to the input terminals provided separately for the left ear system, the right ear system, and the central sensation system of the amplifier 4.

The above-mentioned three sine wave audible frequency signals are transmitted with different fundamental frequencies so as to generate outputs having a frequency difference of several Hz such as 1 to 8 Hz to the three acoustic vibrators. Therefore, the left and right ear frequency downgrading circuits 8L and 8R and the central sensation frequency downgrading circuit 8C
By operating the frequency adjusting means 6 having a variable resistor as an element, the fundamental oscillation frequency of the three kinds of sine wave audible frequency signals is 150 to
The configuration is such that the variable setting can be continuously changed such as 175 to 200 to 225 Hz, and the frequency difference between the three signals can be selected from several types and changed.

On the other hand, the signal line connecting the signal output terminals of the sound signal converter 2 and the audio frequency oscillator 3 and the signal input terminal of the amplifier 4 is provided with an input selection means 7 comprising, for example, a changeover switch mechanism. To be By operating the input selection means 7, either one or both of the stereo element sound signal output by the sound signal converter 2 and the three kinds of sine wave audio frequency signals output by the audio frequency oscillator 3 are output. Can be selected and input to the amplification unit 4.

Further, in the embodiment shown in FIG. 1, a reverberation sound generator 11, a harmonic overtone generator 12, a voice synthesizer 13 and a rotating sound field device 14 are provided in association with the amplifying section 4. The reverberation sound generator 11 is formed in a signal generation circuit that adds reverberation and echo to each stereo element signal output from the amplification unit 4. The harmonic overtone generator 12 generates harmonic overtones (especially 7%) for each stereo element signal output from the amplifier 4.
Signal generation circuit, which can cover ~ 8000 Hz). The voice synthesizer 13 is formed in a signal generating circuit for adding voice synthesis such as a, a, u, d, o, etc., which a human utters, when each stereo element signal output from the amplification section 4 is a frequency sound. It Further, the rotating sound field device 14 is formed in a relay circuit that transmits each stereo element signal output from the amplifying unit 4 by changing the phase so that the sound field rotates clockwise or counterclockwise.

All or at least one of the respective devices 11 to 14 can be connected to the amplifying section 4 and selectively perform their respective functions by turning on / off switches. That is, it is possible to transmit only with frequency sound 3
When playing a base or a speaker of an integral multiple thereof, when overtones are applied to frequency sounds, when frequency sounds are transmitted as voice-synthesized sounds, when overtones are applied to the voice-synthesized sounds, or reverberation sounds are added to each of these sounds. It can be attached, and either can be selected and operated according to need.

The relaxing acoustic device having the above-mentioned structure is used as schematically shown in FIGS. That is, the example of FIG. 2 is a case where three speakers are used as the acoustic vibration unit 5, and the speakers 5L, 5C, and 5R are arranged at equal angles (for example, 120 °) and equal distances with respect to the listener. Then, the device A is connected. On the other hand, the example of FIG. 3 is a case where three headphones are used as the acoustic vibrating unit 5, the left ear headphones 5L are fitted to the listener's left ear, and the right ear headphones 5R are fitted to the right ear, The central sensation headphone 5C is placed in the middle of the forehead and connected to the device A. Each experimental example actually used and tested in this way is described below.

In the first experimental example, the frequency adjusting means 6 and the input selecting means 7 of the relaxing acoustic device are operated to set the fundamental frequency (center) of the three kinds of sine wave audible frequency signals to 160 Hz,
The frequency of the left and right sine wave audible frequency signals is 158 Hz, 1
When the subject was set to 62 Hz, when the subject listened to music consisting of monaural in the center and stereo in the left and right and three kinds of sine wave audible frequency signals at the same time with the eyes closed, a sound was heard from the center of the head, giving a realistic feeling. It's expensive, and within about 5 minutes, I started to shift to a muddy state. When the electroencephalogram at that time was examined by an electroencephalograph, it was found that the θ wave appeared predominantly. The music heard was Bach's Goldberg Concerto.

In the second experimental example, the frequency adjusting means 6 and the input selecting means 7 of the relaxing acoustic device are operated to set the fundamental frequency (center) of the three kinds of sine wave audible frequency signals to 160 Hz,
The frequency of the left and right sine wave audible frequency signals is 157 Hz, 1
At 63 Hz, the subject was allowed to read for 15 minutes while listening to music consisting of monaural in the center and stereo signals in the left and right and three kinds of sine wave audible frequency signals simultaneously. Immediately after that, the contents of this book Test, while
When the same reading and content tests were conducted on the same person without using a relaxing acoustic device, the memory retention was 20% to 30% when listening to the former case.
Improved results have been obtained. In this case, Bach's Brandenburg Concerto was used as the music.

As is clear from the above experimental examples,
By directly listening to and hearing the audible frequency signals corresponding to α, θ, and β waves, the brain of the subject vibrates with the transmitted sound and is induced into a degenerative consciousness state, so that relaxation and memory consolidation can be achieved. It is expected.

According to the present invention, the sound signal converting unit 2 uses a biofeedback measuring device in addition to a device for processing a signal from a magnetic tape, a compact disc, an AM or FM receiver, and is used for measuring brain waves and skin resistance. The corresponding signal may be converted into a stereo element sound signal.

According to the present invention, when three or more acoustic vibrators (speakers) are provided in the acoustic vibrating section 5, the listener is centered around the two-dimensionally equidistant and equidistant regions. Alternatively, the speakers may be arranged three-dimensionally. For example, FIGS. 4 and 5 show an example in which nine speakers are provided. In addition, with the listener M sitting on the floor as a reference, a regular hexagon is defined on the floor centering on the listener M. , The columns 15A to 15F of a predetermined length are set up at the respective apexes thereof, and the first column 15A is located directly in front of the listener M, and the third and fifth columns are counted counterclockwise in the figure. Prop 15C,
In 15E, speakers 5A, 5B, 5D, 5E, 5G, 5H are provided at a height of 120 cm from the floor and at a position almost in contact with the floor.
While each of them is attached and fixed toward the forehead of the listener M, the second, fourth, and sixth stanchions 15 are attached.
Speakers 5I, 5C, and 5F are attached to the positions B, 15D, and 15F at a height of 60 cm from the floor, and fixed to the listener's M forehead. Therefore, the speaker 5
1 set for A, 5B, 5C, 1 set for speakers 5D, 5E, 5F
When the difference between the fundamental frequencies of the sine wave audible frequency signals input to each of the speakers 5A to 5I is 3 Hz, the speakers 5A, 5E, 153 Hz for 5H, 159 Hz for speakers 5B, 5D, 5G, speaker 5
A sinusoidal audio frequency signal of 156 Hz is set in C, 5F and 5I. By doing so, a sound can be heard from the center of the head, the sense of presence is greatly enhanced, and a relaxing effect is achieved.

[0023]

As described above, according to the present invention, an audio device such as a stereo audio device is provided with a function capable of outputting three kinds of sine wave audible frequency signals having a frequency difference of several Hz as element sound signals. It is equipped with a direct feeling from both ears and the forehead, or three-dimensionally by the three-dimensionally diffused sound propagation from the surroundings, so that there is a sense of presence as compared with the case where the sound such as music is simply heard. It has the advantage of greatly increasing the feeling of relaxation, and also has the effect of continuously increasing memory, and thus the effect of two birds with one stone that achieves relaxation and ability development in addition to viewing and entertainment with one relaxing audio device. Is demonstrated. Also,
As a result of stimulating the human body's hormone centers such as the hypothalamus by the direct vibration of the whole brain, it is fully expected to improve health.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a relaxing acoustic device according to an embodiment of the present invention.

FIG. 2 is an explanatory view of a mode of use of the relaxing acoustic device according to the embodiment of the present invention.

FIG. 3 is a diagram illustrating a usage state of a relaxing acoustic device according to another embodiment of the present invention.

FIG. 4 is a plan view showing a speaker arrangement mode in an acoustic vibrating section of a relaxing acoustic device according to an embodiment of the present invention.

5 is a perspective view showing a speaker arrangement mode corresponding to FIG. 4. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Power supply part, 2 ... Sound signal conversion part, 3 ... Audio frequency oscillation part, 4 ... Amplification part, 5 ... Acoustic vibration part, 6 ... Frequency adjustment means, 7 ... Input selection means, 8L ... Left ear frequency downgrading circuit,
8R ... right ear frequency down converter, 8C ... central sensation frequency down circuit, 9L ... left ear waveform correction circuit, 9R ... right ear waveform correction circuit, 9C ... center sensation waveform correction circuit, 10 ... high frequency Oscillator, 11 ... Reverberant sound generator, 12 ... Overtone generator,
13 ... Voice synthesizer, 14 ... Rotating sound field device.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-61-131757 (JP, A) JP-A-7-24069 (JP, A) JP-A-5-341796 (JP, A) JP-A-5- 192406 (JP, A)

Claims (4)

[Claims] 1. A power supply section, a sound signal conversion section for converting a received signal into elemental sound signals of three systems and outputting the elemental sound signals, and three kinds of sine wave audible frequency signals having a frequency difference of several Hz. Of the audible frequency oscillating section, the element sound signals output by the sound signal converting section, and the three kinds of sine wave audible frequency signals output by the audible frequency oscillating section are introduced to synchronize those signals. And, an amplifier that superimposes each system and outputs the sound signals of three systems, and the sound signals of three systems that are introduced from this amplifier are distributed to three or more acoustic vibrators and converted to voice and output. And an acoustic vibrating section, wherein the acoustic vibrating section is provided so as to form a field in which sounds outputted from the acoustic vibrating section resonate with each other.
A relaxing acoustic device characterized by comprising frequency adjusting means for varying the fundamental oscillation frequency and the frequency difference between the three types of sine wave audible frequency signals. 2. A power supply section, a sound signal conversion section for receiving a stereo sound signal and converting it into element sound signals of three systems on the left side, the center side and the right side and outputting the same, and three kinds of sound signals having a frequency difference of several Hz. An audible frequency oscillating section for synchronously oscillating and outputting a sine wave audible frequency signal, each element sound signal output by the sound signal converting section, and three kinds of sine wave audible frequency signals output by the audible frequency oscillating section Has been introduced to synchronize those signals synchronously,
In addition, an amplifier that outputs a sound signal that is superimposed for each system and each sound signal that is introduced from this amplifier are converted into sound by three acoustic vibrators that are arranged at equal angles and distances from the corresponding center position. And a stereo acoustic vibrating unit for converting and outputting, the stereo acoustic vibrating unit being provided so as to form a field in which sounds output from the acoustic acoustic vibrating unit resonate and resonate with each other. A relaxing acoustic device comprising frequency adjusting means for varying the fundamental oscillation frequency of a sine wave audible frequency signal and the frequency difference between them. 3. At least one of a harmonic overtone generator, a voice synthesizer, and a reverberation tone generator is attached in association with the amplification section, and a sound signal of each system to which at least one of overtone, voice synthesis, and reverberation is attached is provided. The relaxing acoustic device according to claim 1, wherein the relaxing acoustic device can be output from the amplifying unit. 4. The amplifying unit selects at least one of each elemental sound signal output by the sound signal converting unit and three kinds of sine wave audio frequency signals output by the audio frequency oscillating unit. The relaxing acoustic apparatus according to claim 1, further comprising an input selecting unit for inputting.