JPS6319159A - Hearing feedback information display apparatus - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an auditory feed information presentation device that converts information on human biological signals into auditory information and presents the auditory information.

[Conventional technology]

Biofeedback systems have been developed in recent years for (1) relaxation training to relieve anxiety, stress, and irritation; (2) reduction of symptoms of psychosomatic disorders; (3) promotion of falling asleep for insomnia; and (4) caution for children with learning difficulties and hyperactive children. Strengthening Concentration (5) Often used for rehabilitation training, etc.

Figure 2 is a block diagram showing a general biofeedback system, where (1) is a biosignal detection unit that detects biosignals such as electroencephalograms and electromyograms, and (2) is a biosignal detection unit that amplifies the detected signals and uses filters, etc. (3) is a feedback signal determination unit that determines a feedback signal according to the feedback level; (4) is a conversion unit for presenting easy-to-understand visual or auditory information to a person; and (5) is a presentation unit. Department.

In the feedback signal determination unit (3), presentation conversion unit (4), and presentation unit (5) in this system, one signal is set to a predetermined threshold as a method of feeding back changes in biological signals to a person using auditory information. When reaching , turn on the sound (single note)
Some examples include those that turn off when the click sound is not reached, and those that change the volume or pitch of the sound in proportion to the amount of change, and the frequency of presentation of the click sound.

Specifically, the configuration is as shown in the block diagram of FIG. In FIG. 8, (3) is a feedback signal determination unit that determines the feedback signal of the input biological signal, Yu is a volume control unit, and E? J is the sound source, and my sister is the audio amplifier. The feedback signal determining unit (3) determines a feedback signal for the input biological signal, and the presentation conversion unit (4) determines a conversion formula, and according to this, the volume control unit converts the sound signal from the sound source A. is AM-modulated and presented via an audio amplifier (8).

The explanatory diagram in Figure 4 shows that the conversion method is binary (on-off
A time chart of an example in which the signal is turned on at f) is shown.

Note that the horizontal axis represents time, and the vertical axis represents the amplitude of each signal.

Regarding the technology in this field, please refer to Japanese Patent Application Laid-Open No. 61-566.
It is described in Publication No. 81, etc.

[Problem that the invention seeks to solve]

Conventional auditory feedback information presentation devices are configured as described above, so they cannot present the target value at the same time as the feedback information of the biological signal, cannot perform training by comparing it with the target value, and cannot perform training using a single biological signal. There was a problem in that only feedback information regarding the signal could be presented.

This invention was made in order to solve the above-mentioned problems.The present invention was made in order to solve the above-mentioned problems. The purpose is to obtain a feedback information presentation device.

[Means for solving problems]

The auditory feedback information presentation device of the present invention includes a biological signal detection section that detects a biological signal, a feedback signal generation section that generates a feedback signal based on the detected biological signal, a speaker that generates left and right sounds separately, and a speaker that generates left and right sounds separately. a first sound generation unit that generates a first sound on one side of the left and right sides;
The device includes a second sound generating section that controls a sound source using the feedback signal and generates a second sound from the left and right speakers.

[Effect]

The speaker of this invention generates sounds separately for the left and right sides, and the second sound generated from the other side presents feedback information of a biological signal, and the first sound generated from one side presents its target value or feedback information of a different type of biological signal. Therefore, the biosignal and its target value, or the biosignal of two channels can be presented simultaneously as auditory information.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the block diagram shown in the figure, (b) is a first biosignal detection unit that detects a first biosignal, and υ is a first feedback signal generation unit. It consists of a first feedback signal determination section (211) that determines a feedback signal, and a first presentation conversion section (212) that performs conversion for presentation. 6]) is a first sound generation unit, in this case, a volume control unit (812) that controls the volume of the first sound source (8u) according to the outputs of the first sound source (811) and the first presentation conversion unit (212). ) and a first audio amplifier (818). @ is a second biological signal detection section, and (a) is a second feedback signal generation section, which also includes a second feedback signal determination section (221) and a second presentation conversion section (222).

□□□ is the second sound generator, and in this case also the second sound source (821
), a second volume control section (822), and a second audio amplifier. A speaker is a speaker that generates sound separately for the left and right sides, in this case headphones, and the first sound is transferred from one side to the other (transferred).
generates the second sound.

Next, the operation will be explained.

The first and second biosignals X, X2 detected by the first and second biosignal detection units (b) (2) are set in advance by the first and second biosignal detection units (211) and (221), respectively. According to the number of feed vibration levels set, the first. A second feedback signal is determined. That is, the maximum value of each biological signal X1m
1n, minimum value X1m1n s feedback level F
If Li is the level of biological signals input in a certain period of time
it is determined as follows.

Xit −Ximin XLi= fCXimax−,'□min×””〕
i=1.2 1st. The second presentation converter (212) (222) further calculates the ratio of the two signals. First feedback signal Xl4=a, second feedback signal XL
2=b, the volume parameter according to this is set to 1. Second volume control section (
812) (822) and the first. 2nd sound source (311X
821), the first sound and the second sound are the first sound. The second volume control section (812X822) performs AM modulation according to the volume parameter, and the first. 2nd audio amplifier (818X
One (goods) of headphones and the other (6
) are output separately. Therefore, for example, the first
A second sound is presented to the right ear. Note that FLi is not required in the case of analog (the level is not required).

Specifically, when the feedback information of the first biosignal is presented as a C sound to the left ear and the feedback information of the second biosignal is presented as a M sound to the right ear, the amount of change in the first biosignal is When it's loud, you hear C, when it's the second biosignal, you hear M, and when both are the same, you hear a C and M chord. For example, the training goal is to improve the balance between two responses (to make it sound like a chord), or to suppress one response (to make only the C or M sound audible).

Further, in the case of a single sound (the first sound and the second sound are the same sound), the sound is recognized as being heard from the left, middle, or right depending on the volume balance between the left and right. (Magazine: Psychological Research, 1984.V
ol, 54. No. 6.878-881) Therefore, the localization of sound in space can also be used as information.

In the above embodiment, the total volume is always 1, but the 1st. Second presentation conversion unit (212) (222)
Without performing the processing in step 1. It may be presented at a volume proportional to the second feedback signal (that is, the amount of change in the first and second biological signals).

In addition, in the above embodiment, a case was described in which feedback information of two biological signals is presented separately to one and the other of the left and right speakers (i.e., the first sound and the second sound). The target value of the signal may be presented, and the feedback information thereof may be presented to the other party. In this case, there may be one biosignal, or two or more biosignals may be compared or combined.

The biological signals related to this invention include electroencephalogram, electromyogram, electrocardiogram, skin temperature, pulse wave, respiration, skin electrical activity, joint angle,
Weighting etc. are applied.

The feedback information of this biosignal can be presented by dividing the two biosignals into the first sound and the second sound as they are, or by presenting the difference between the two biosignals, or by presenting the difference between the two biosignals. There are methods such as presenting the change and its target value separately in the first and second tones. Further, feedback information is presented by changes in volume, scale, etc. of the first and second sounds. For example, VCA (Volt) can be used to control the volume.
ageControl led Amplifier
), and the first. The second sound source is not limited to single notes, but also melody and accompaniment, which are two types of melodies divided (if both are at the same volume, one melody can be heard. when the balance is achieved)
etc. are used. Scale control can be realized, for example, by ■CO, which converts the pitch of the sound, and training goals include making two sounds high or low, separating them, or making them the same sound.

The speakers that generate sound separately on the left and right sides according to the present invention are not limited to headphones, but may also be a pair of speakers built into the left and right sides of the back of a chair, or placed on the left and right cloth in a space.

〔Effect of the invention〕

As described above, according to the present invention, there is a biosignal detection section that detects a biosignal, a feedback signal generation section that generates a feedback signal based on the detected biosignal, and a feedback signal generation section that generates left and right sounds separately. a first sound generating section that generates sound on one of the left and right sides of the speaker, and a second sound generating section that controls a sound source according to the feedback signal to generate sound on the other side of the left and right speakers. By using auditory information, the target value can be presented at the same time as the biological signal feedback information. Alternatively, it is possible to obtain an auditory feedback information presentation device that can simultaneously present feedback information of two channels of biological signals.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an auditory feedback information presentation device according to an embodiment of the present invention, FIG. 2 is a block diagram showing a general biofeedback system, and FIG. 8 is a block diagram showing a conventional auditory feedback information presentation device. The block diagram shown in FIG. 4 is an explanatory diagram thereof. Ql)...First biological signal detection section, (Incorporated Foundation)...First feedback signal generation section, (3)...First sound generation section,
□□□...Second biological signal detection section, Kan...Second feedback signal generation section, 04...Second sound generation section, C0)
...Speaker. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (5)

[Claims] (1) A biological signal detection unit that detects biological signals, a feedback signal generation unit that generates a feedback signal based on the detected biological signals, a speaker that generates sounds separately for the left and right sides, and separate left and right speakers for this speaker. an auditory feedback system comprising: a first sound generating section that generates a first sound on one side of the speaker; and a second sound generating section that controls a sound source according to the feedback signal to generate a second sound on the other side of the left and right speakers. Information presentation device. (2) Claim 1 in which the speaker is a headphone
The auditory feedback information presentation device described in Section 1. (3) The auditory feedback according to claim 1 or 2, wherein the first sound is a reference sound, and the second sound is a variation of the first sound, which changes in accordance with the difference between the biological signal and the target value. Information presentation device. (4) A feedback signal is generated based on different types of biological signals, and a sound source is controlled by the feedback signal and applied to the left and right speakers separately, according to claim 1 or 2. auditory feedback information presentation device. (5) The auditory feedback information presentation device according to claim 1 or 2, wherein the first sound and the second sound use the same sound source and adjust their volume ratios using feedback signals.