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JPH05192406

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DESCRIPTION JPH05192406
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
stereophonic audio apparatus capable of achieving memory amplification and relaxation double
effects.
[0002]
2. Description of the Related Art Portable stereo sound equipment or room-mounted stereo
sound equipment that collectively refers to cassette tape type headphones, stereo players,
compact disc type headphones, stereo players, FM radio receivers, etc. The level of penetration
has been steadily increasing due to the realization of Most of these conventional stereophonic
sound devices are improved in terms of acoustics and handling, such as being compact and
convenient in terms of portableness and installation space, high sound quality, and long life.
[0003]
Although this type of stereophonic audio system has the advantage that it can be relaxed by
listening to music, for example, and its emotional stability can be temporarily achieved, even if
the quality and performance have been improved. If you are looking for a device that can
alleviate stress, especially in a highly stimulating modern society, as it has not been able to
enhance the mind and body relaxation effect for users. At present, it is impossible to cope with
the conventional stereophonic sound device alone, and it is necessary to rely on special devices
and instruments for that purpose.
08-05-2019
1
[0004]
The present invention has been made in view of such circumstances, and it is an object of the
present invention to provide a doubling effect of sense of relaxation as well as a memory effect in
addition to the acoustic effect given to the original entertainment side of the device such as
listening to music. The present invention is to provide a novel stereophonic sound device that can
exhibit the excellent characteristics of one bird and two birds that can exhibit the psychological
effect of the amplification effect of.
[0005]
SUMMARY OF THE INVENTION The present invention is configured as described below in order
to achieve the above object.
That is, the present invention comprises a power supply unit, a sound signal conversion unit
which receives a signal from a magnetic tape, a compact disk, an AM, an FM receiver, a line input
terminal or a biofeedback measurement device, converts it into a stereo sound signal and outputs
it. An audio frequency oscillating unit that synchronously oscillates and outputs two types of sine
wave audio frequency signals having a frequency difference of several Hz, a stereo sound signal
output from the sound signal conversion unit, and the audio frequency oscillating unit output An
amplification unit that receives two types of sine wave audio frequency signals that are input and
synchronously and separately superimposes these signals separately on the left and right ear
systems, and an audio unit; The audio frequency oscillation unit is configured to convert the
signal into two and output the left and right ear systems separately, and the audio frequency
oscillation unit is configured to generate the fundamental oscillation frequency and the
frequency between the two sine wave audio frequency signals. Frequency adjusting means for
varying the a stereo sound system, characterized in that is provided.
[0006]
The present invention also selects at least one of a stereo sound signal output from the sound
signal conversion unit and two types of sine wave audio frequency signals output from the audio
frequency oscillation unit, and inputs the selected signal to the amplification unit. The
stereophonic audio apparatus according to the present invention is characterized in that it
comprises an input selection means for performing the above-described configuration.
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[0007]
According to the present invention having the above configuration, sound information such as
music is transmitted from the stereo loudspeaker 5 such as speakers and headphones via the left
and right ears, and at the same time, 2, 4, 6, Two sinusoidal audio frequency signals with a
frequency difference of eight equal HZ are heard.
As a result, the brain synchronizes with the frequencies of the two sinusoidal audio frequency
signals and their activity changes.
For example, when a 150 Hz and 150 Hz sine wave signal is given to the left and right ears at an
appropriate volume, the subject is induced to an electroencephalogram state with a difference of
8 Hz.
[0008]
Speaking of 8HZ, it corresponds to the alpha wave of brain waves when a person relaxes. As
described above, it is possible to select an appropriate frequency difference and to induce an
electroencephalogram preferably with an α, θ, β wave and any wave form, for example, by
operating a frequency adjustment means such as a volume. It has also been found that when a
person is in alpha and theta wave states, the implied barrier exhibits a psychological tendency to
be easily removed. For this reason, in the case of a psychological act such as memorizing or
understanding things, it becomes so vague that the preference of being disliked who is an
obstacle or the barrier due to a preconception gets murmur so that learning and understanding
can be deepened by learning in a short time. It will be
[0009]
Further, according to the present invention, it is of course possible to operate only the sound
information such as music and the like and to listen to only two types of sine wave audio
frequency signals by operating the input selection means. You can play well, but if you feel that
you don't like monotony, just listen to the music at the same time as described above. Thus,
multipurpose use can be achieved with one stereo sound apparatus such as a portable stereo
sound apparatus.
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[0010]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing
the electrical configuration of a stereophonic audio system according to an embodiment of the
present invention. This stereophonic audio device is called a so-called playback / recording unit
comprising, for example, a magnetic head, a motor, etc., which receives a sound signal from a
magnetic tape etc. and converts it into a stereo sound signal and outputs it. Sound signal
conversion unit 2, an audio frequency oscillation unit 3 which is a main part that characterizes
the present invention, a stereo sound signal output from the sound signal conversion unit 2, and
a sine wave described later output from the audio frequency oscillation unit 3 An audio
frequency signal is input, and an amplification unit 4 that synchronously and separately
superimposes these signals separately on the left and right ear systems and power amplification,
and converts the stereo sound signal superimposed and amplified by the amplification unit 4 into
voice For example, the power supply unit 1, the sound signal conversion unit 2, the amplification
unit 4, and the stereo sound amplification device 5 have the stereo sound amplification device 5
composed of, for example, two speakers and headphones to be separately output. To can be
utilized by without major modifications members known like.
[0011]
The audio frequency oscillating unit 3 includes a high frequency oscillator 10 such as a crystal
oscillator, and two left and right ear step down circuits 8L and R for converting the signals
output from the high frequency oscillator 10 into audio frequency signals. It is composed of left
and right ear waveform correction circuits 9L and R that respectively convert the two audio
frequency signals output from the left and right ear frequency down converter 8L and R into
distortion-free sine audio frequency signals. The two sine wave audio frequency signals are input
to left and right ear system input terminals of the amplification unit 4.
[0012]
The above-mentioned two sinusoidal audio frequency signals are transmitted with different
fundamental frequencies such that there is a frequency difference of several HZ such as 2, 4, 6, 8
Hz etc. between the two signals, and the left and right By operating the frequency adjustment
means 6 provided in association with the ear frequency down converter circuits 8L and R, for
example, the variable resistor, the fundamental oscillation frequency in the two types of sine
wave audio frequency signals is 150 to 175. As the variable setting is continuously changed and
changed, such as from 200 to 225 Hz, the frequency difference between the two can be selected
from among several types and the setting can be changed.
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[0013]
On the other hand, on signal lines connecting the respective signal output terminals of the sound
signal conversion unit 2 and the audio frequency oscillation unit 3 and the signal input terminal
of the amplification unit 4, an input selection unit 7 composed of, for example, a changeover
switch mechanism is provided.
By operating the input selection means 7, either one or both of the stereo sound signal output
from the sound signal conversion unit 2 and the two types of sine wave audio frequency signals
output from the audio frequency oscillation unit 3 are used. It is possible to select and input to
the amplification unit 4.
[0014]
Each experiment example actually tested using the stereophonic sound apparatus which has the
structure described above is demonstrated below.
[0015]
The first experimental example, The frequency adjustment means 6 and the input selection
means 7 of the stereophonic sound device are operated to set the fundamental frequency of the
two types of sine wave audio frequency signals to 160 Hz and the frequency difference to 4 Hz.
At the same time, I was listening to the sine wave audio frequency signal with the closed eye, and
within about 5 minutes, I tried to shift to the state of stagnation.
When the electroencephalogram at that time was examined by an electroencephalograph, it was
found that the θ wave appeared to be dominant.
The music I listened to was Chopin's nocturne.
[0016]
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Second Experiment Example: By operating the frequency adjustment means 6 and the input
selection means 7 of the stereophonic sound device, the fundamental frequency of the two types
of sine wave audio frequency signals is set to 160 Hz and the frequency difference is set to 6 Hz.
Make a reading for 15 minutes synchronously listening simultaneously with the sinusoidal audio
frequency signal, then test the contents of this book while doing the same reading without using
a stereo sound device for the same person, A comparative experiment of the tests showed that
when the former was used for listening, the memory retention was improved by 20% to 30%. In
this case, Bach's Brandenburg concerto was used as music.
[0017]
As clearly shown by the above-mentioned experimental examples, the subject's brain is activated
by listening to audio frequency signals corresponding to the α, θ and β waves directly to
realize relaxation and establishment of memory It is.
[0018]
In the present invention, as the sound signal conversion unit 2, in addition to an apparatus for
processing signals from a magnetic tape, a compact disc, an AM, FM receiver, a signal
corresponding to electroencephalograms or skin resistance using a biofeedback measurement
apparatus May be converted to a stereo sound signal.
[0019]
As described above, according to the present invention, the stereophonic audio apparatus is
provided with a function capable of outputting two types of sine wave audio frequency signals
having a frequency difference of several Hz as a stereophonic sound signal. This has the
advantage of significantly increasing the sense of relaxation compared to simply listening to
sounds such as music, and also has the effect of continuously increasing the memory power, thus
appreciating with a single stereo sound device In addition to entertainment, the effect of the two
birds of one stone that can be improved in mind and body is exhibited.
[0020]
Brief description of the drawings
[0021]
1 is a block diagram showing an electrical configuration of a stereophonic audio apparatus
according to an embodiment of the present invention.
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[0022]
Explanation of sign
[0023]
DESCRIPTION OF SYMBOLS 1 ... Power supply part, 2 ... sound signal conversion part, 3 ... audio
frequency oscillation part, 4 ... amplification part, 5 ... stereophonic speech apparatus, 6 ...
frequency adjustment means, 7 ... input selection means, 8L .. Circuit, 8R: frequency down
converter for right ear, 9L: waveform correction circuit for left ear, 9R: waveform correction
circuit for right ear, 10: high frequency oscillator.
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