KR950009526A - Method and apparatus for generating an audible sound for inducing Fm theta (Fm θ) - Google Patents

Abstract

An audible sound of a modulated wave superimposed on an audible low frequency of less than about 20 Hertz stimulates Fm θ in human brain waves and improves attention and concentration when listening to it during mental work. In addition, the audible sound effectively stimulates the human α wave when it is about 2 to 10 hetz. Such an audible sound is obtained by generating an electrical signal including a modulated wave and converting it into an audible acoustic wave.

Description

Method and apparatus for generating an audible sound for inducing Fm theta (Fm θ)

Since this is an open matter, no full text was included.

1 is a block diagram of an electrical component of an Fm θ induction device for generating an audible sound of the present invention,

3 is a block diagram of an electrical component provided with an Fm θ induction recording medium for generating an audible sound of the present invention.

Claims (25)

Fm θ-induced audible sound, in which ultra-low frequencies of about 20 Hz or less comprise a modulated wave superimposed on an audible low frequency. The audible sound of claim 1, wherein the low frequency frequency is about 120-200 hetz. The audible sound as claimed in claim 1, wherein the frequency of the ultra low frequency is about 2 to 10 Hertz. The audible sound as claimed in claim 1, wherein the modulation degree of the modulated wave is about 30-100%. The audible sound of claim 1, wherein the frequency, frequency of appearance, duration, and / or magnitude vary with 1 / f vibration. The audible sound of claim 1, wherein the audible and ultra low frequencies are sinusoidal. A method for generating an audible sound for amplitude modulation of an audible low frequency with an ultra low frequency of about 20 Hertz or less, and for electroacoustic conversion of the obtained electric signal comprising a modulated wave superimposed on the audible low frequency. 8. The method of claim 7, wherein the audible sound is about 120-200 hertz of the audible low frequency. 8. The method of claim 7, wherein the frequency of the ultra low frequency is about 2-10 Hertz. 8. The method of claim 7, wherein the modulation degree of the modulated wave is about 2-10 Hertz. The method of claim 7, wherein the frequency of occurrence, duration, and magnitude of the audible sound vary with 1 / f vibration. 8. The method of claim 7, wherein the audible low frequency and the ultra low frequency are sinusoidal. And a modulated wave generator circuit for generating a modulated signal superimposed on the audible low frequency wave of about 20 Hertz or less, and an electroacoustic transducer for converting the modulated wave into an audible sound, wherein the electroacoustic converter includes: An audible sound generating device connected to the output terminal. 14. The apparatus of claim 13, further comprising: a first oscillation circuit for generating an audible low frequency; A second oscillation circuit for generating an ultra low frequency of about 20 Hz or less; And a modulating circuit for modulating the audible low frequency with the ultra low frequency, wherein the modulating circuit has an output connected to the output of the first and second oscillating circuits. The audible sound generating device according to claim 13, wherein the frequency of the audible low frequency is about 120 to 200 hetz. The audible sound generating device according to claim 13, wherein the frequency of the ultra low frequency is about 2 to 10 hetz. The apparatus of claim 13, wherein the modulation degree of the modulated wave is about 30% to 100%. The apparatus of claim 13, wherein the frequency, frequency of appearance, and magnitude of the audible sound vary with 1 / f vibration. A recording medium in which an ultra low frequency of 20 Hz or less induces Fm θ having a track of a magnetic or optically recorded modulation wave superimposed on an audible low frequency, wherein the recording medium provides an audible sound upon reproduction. 20. The recording medium of claim 19, wherein the frequency of the audible low frequency is about 120-200 hetz. 20. The recording medium of claim 19, wherein the frequency of the ultra low frequency is about 2-10 Hz. 20. The recording medium of claim 19, wherein a modulation degree of the modulated wave is about 30 to 100%. 20. The recording medium of claim 19, wherein the frequency, frequency of occurrence, duration, and / or magnitude of the audible sound vary with 1 / f vibration. 20. The recording medium of claim 19, wherein the low and ultra low frequencies are sinusoidal. 20. The recording medium of claim 19, wherein the recording medium is a magnetic tape or an optical disk. ※ Note: The disclosure is based on the initial application.