JP2017070342A - Content reproducing device and program thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for improving sleep, etc. during the night of a bedridden subject.SOLUTION: A content reproducing device 20 includes an acquisition part 210 for acquiring biological information on a subject, a sound source for reproducing a content designated from a plurality of contents during the day, an estimation part 230 for estimating sleep depth indicating the depth of sleep of the subject during the night based on the biological information during the night acquired by the acquisition part, an evaluation part 235 for monitoring the transition of the depth of sleep, and evaluating an effect that the content reproduced during the day has on the sleep of the subject during the night, and a control part 240 for designating a content to be reproduced during the day by the sound source from the plurality of contents based on the result of the evaluation by the evaluation part 235.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a content reproduction apparatus and a program thereof.

  In recent years, a technique has been proposed in which biological information such as body movement, breathing, and heartbeat is detected and a sound corresponding to the biological information is generated to improve sleep and provide a relaxation effect (see, for example, Patent Document 1). ). In addition, a technique for adjusting at least one of the type of sound to be generated, the volume, and the tempo according to the relaxed state of the subject has been proposed (see, for example, Patent Document 2).

JP-A-4-269972 JP 2004-344284 A

By the way, in the case of a bedridden elderly person, it is often impossible to sleep at night by napping in the daytime. To improve this, it is necessary to maintain a circadian rhythm that is active during the day and relaxing at night.
However, the conventional technology improves sleep by listening to the sound according to the biological rhythm of the subject between entering and getting up, and is considered for awakening the subject during the daytime. There wasn't.
The present invention has been made in view of such circumstances, and it is an object of the present invention to make a subject awake during the day and relax at night.

  In order to solve the above problem, a content playback apparatus according to an aspect of the present invention includes an acquisition unit that acquires biological information of a subject, a playback unit that plays back content specified from a plurality of content in the daytime, Based on the biometric information at night acquired by the acquisition unit, an estimation unit that estimates the sleep depth of the subject at night, and a transition of the sleep depth is monitored and reproduced in the daytime. In addition, an evaluation unit that evaluates the influence of the content on night sleep of the subject, and the content that the reproduction unit should reproduce in the daytime from the plurality of contents based on the evaluation result of the evaluation unit A control unit.

To sleep well at night, you need to be awake during the day. Therefore, the content that is played during the day needs to be suitable for keeping the subject active and awake. According to this aspect, content is selected from a plurality of contents for a subject and reproduced during the daytime, and the evaluation is performed by nighttime sleep. Therefore, when a bedridden elderly person or the like is a subject, it becomes possible to sleep well at night by keeping awakening in the daytime. In addition to the sound, the content may act on the subject's vision by light, or may act on the subject by vibration.
In addition, the evaluation unit identifies a sleep time from bedtime to sleep from the transition of the sleep depth, and evaluates the influence of the content reproduced during the daytime on the sleep of the subject based on the sleep time It is preferable to do.

  The aspect mentioned above WHEREIN: It is preferable that the said control part switches the content designated with respect to the said reproduction | regeneration part to the content which induces sleep from before the preset entrance time. According to this aspect, the sound content is selected so as to keep the subject's awakening in the daytime, but since the content is changed to the content that leads to sleep before the sleep time, the subject can sleep smoothly at night.

  In the aspect described above, it is preferable that the content is sound content and the reproduction unit is a sound source for reproducing the sound content. In this case, the subject is kept awake by sound during the day.

In the aspect described above, it is preferable that the control unit generates a biological rhythm of the subject based on the biological information, and the sound source adjusts a tempo of sound content to be reproduced according to the biological rhythm. According to this aspect, since the tempo of the sound content is adjusted according to the rhythm of the living body, it is possible to reproduce a sound rich in change. As a result, since the subject is not bored, the nap during the daytime can be reduced and the subject can sleep at night.
Here, the control unit may set the tempo of the sound content earlier than the biological rhythm in the daytime. On the other hand, when guiding the sleep state of the subject to deepen at night, it is preferable to set the tempo of the sound content to a slower tempo than the biological rhythm.
Further, the plurality of sound contents include sound contents having different tempos, and the control unit may specify sound contents to be reproduced by the sound source in accordance with the biological rhythm. In this case, the control unit may specify that the tempo of the sound content to be reproduced by the sound source is faster than the biological rhythm during the daytime. On the other hand, when guiding the sleep state of the subject to deepen at night, it is preferable to specify that the tempo of the sound content to be reproduced by the sound source is slower than the biological rhythm.

  The aspect mentioned above WHEREIN: It is preferable to provide the memory | storage part which memorize | stores the said biorhythm, and the said sound source adjusts the tempo of the sound reproduced | regenerated according to the said biorhythm read from the said memory | storage part. According to this aspect, when the biological information of the subject cannot be obtained, the tempo of the sound to be reproduced can be adjusted according to the past biological rhythm. For example, if the location of a sensor that detects biological information is fixed and the subject moves around in the daytime, the biological rhythm cannot be generated. According to this aspect, since the past biological rhythm of the subject is read from the storage unit, the sound content with the tempo corresponding to the biological rhythm can be reproduced even in such a case.

The above-described content reproduction apparatus invention can be understood as a program invention.
Such a program is a program for a content reproduction apparatus including a computer, and the computer reproduces the content specified in a plurality of contents in the daytime by an acquisition unit that acquires biological information of the subject. And an estimation unit that estimates a sleep depth indicating the depth of sleep of the subject at night based on the biological information obtained at night by the acquisition unit and the transition of the sleep depth, An evaluation unit that evaluates the influence of the content played on the night sleep of the subject, and the content that the playback unit should play during the day based on the evaluation result of the evaluation unit It is made to function as a control part which designates.

It is a figure which shows the whole structure of the system containing the content reproduction apparatus which concerns on embodiment. It is a block diagram which shows the function structure of a content reproduction apparatus. It is explanatory drawing for demonstrating the relationship between a sleep cycle and sleep depth. It is a block diagram which shows the structural example of a sound source. It is explanatory drawing which shows an example of the memory content of a content table.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating an overall configuration of a system 1 including a content reproduction device 20 according to the embodiment. As shown in the figure, the system 1 includes a sensor 11, a content reproduction device 20, and speakers 51 and 52. This system 1 relaxes the subject E and sleeps well at night by making the subject E taking a lying posture on the bed 5 hear or feel the sound emitted from the speakers 51 and 52. In order to be able to do this, during the daytime, the subject E is activated to reproduce sound content that promotes awakening (sound content for awakening). The content reproduction device 20 can switch and reproduce a plurality of sound contents. The system 1 detects the biological information of the subject E using the sensor 11 and estimates the nighttime sleep depth based on the detected biological information. Then, the sound content played in the daytime is evaluated at night, and the daytime sound content to be played back in the daytime is selected using the evaluation value of the sleep at night so that the subject E can wake up without stagnation in the daytime. To do.
The content reproduction apparatus 20 can be used in a care facility for a bedridden elderly person, a hospital that accommodates a bedridden patient, and the like. Such a subject sometimes slaps in the daytime, but if he takes a sleep in the daytime, he / she wakes up at night and cannot sleep. According to the content reproduction apparatus 20, since awakening can be maintained during the daytime, an appropriate circadian rhythm can be realized.

  The sensor 11 is made of, for example, a sheet-like piezoelectric element, and is disposed below the mattress of the bed 5. When the subject E lies on the bed 5, the biological information of the subject E is detected by the sensor 11. Body movements caused by various things including the breathing and heartbeat of the subject E are detected by the sensor 11, and a detection signal in which these components are superimposed is output from the sensor 11. In the drawing, the configuration in which the detection signal is transmitted to the content reproduction device 20 by wire is shown for convenience, but a configuration in which the detection signal is transmitted wirelessly is also possible. There are also subjects E who can move around in the room during the day depending on the degree of care or illness. Such a subject E preferably wears a wristwatch-type wearable device including the sensor 11 during the day, and the sensor 11 and the content reproduction device 20 are preferably connected by wireless communication.

  The content playback device 20 can acquire the subject's breathing cycle BRm, heartbeat cycle HRm, and body movement based on the detection signal (biological information) output from the sensor 11. Further, the content playback device 20 Is capable of estimating the sleep depth of the subject E based on the detection signal (biological information) output from the sensor 11. The content reproduction device 20 is, for example, a mobile terminal or a personal computer, and a plurality of functional blocks to be described later are constructed by the CPU executing a program installed in advance.

  The speakers 51 and 52 are arranged at positions where the subject E in a supine posture can hear stereo sound. Among these, the speaker 51 incorporates a stereo left (L) signal output from the content reproduction device 20. Amplify with an amplifier to emit sound. Similarly, the speaker 52 amplifies the stereo light (R) signal output from the content reproduction apparatus 20 with a built-in amplifier and emits the sound. In addition, although there may be a configuration in which the subject E listens to the sound with headphones, in the present embodiment, the configuration using the speakers 51 and 52 will be described.

  FIG. 2 is a diagram showing a configuration of functional blocks mainly in the content reproduction apparatus 20 in the system 1. As shown in this figure, the content reproduction apparatus 20 includes an A / D converter 205, an acquisition unit 210, an estimation unit 230, an evaluation unit 235, a control unit 240, a storage unit 250, a sound source 40, and a D / A converter. Among these, functional blocks excluding the A / D converter 205, the D / A converters 261 and 262, and the input unit 237 are constructed by executing the program. The sound source 40 may be configured by LSI (Large Scale Integration). The storage unit 250 stores a content table, an evaluation table, and a biological rhythm table. In the content table. A plurality of sound contents are stored. Here, the sound content may be any data as long as sound data can be generated in the sound source 40. For example, performance data obtained by converting performance information into data, parameters for controlling the sound source 40, or waveform data may be used. In short, any format can be used as long as the sound source 40 can be controlled.

  The A / D converter 205 converts the detection signal from the sensor 11 into a digital signal. The acquisition unit 210 temporarily stores the converted digital signal in the internal memory, and outputs it to the estimation unit 230 and the control unit 240. The estimation unit 230 and the control unit 240 specify the respiratory cycle BRm and the heartbeat cycle HRm of the subject based on the detection signal of the sensor 11. Specifically, a frequency component corresponding to a human heartbeat frequency range is extracted from the detection signal, and the heartbeat cycle HRm is specified from the digitized signal. Since the heartbeat component superimposed on the detection signal has a smaller amplitude than the respiratory component, a component with a small amplitude may be added as an extraction condition. Further, a frequency component corresponding to the frequency range of human breathing is extracted from the detection signal, and the respiratory rate BR is specified from the digitized signal.

  The control unit 240 outputs the breathing-linked sound tempo corresponding to the breathing cycle BRm and the heartbeat-linked sound tempo corresponding to the heartbeat cycle HRm to the sound source 40 as biological rhythm information CTL1. Note that the respiratory rate BR per minute may be specified instead of the respiratory cycle BRm, and the heart rate HR per minute may be specified instead of the heartbeat cycle HRm. That is, heart rate information relating to heartbeat and respiration information relating to breathing may be specified. Heartbeat information and respiration information are biological rhythms obtained from the biological information of the subject E. That is, the control unit 240 functions as a biological rhythm generation unit that generates a biological rhythm based on biological information. The sound source 40 controls the tempo of the heartbeat-linked sound using the breathing information and the heartbeat information, and controls the tempo of the breath-linked sound reproduced by the sound source 40. These correspond to parameters for controlling the sound source 40. In this system 1, since the tempo of the sound content is adjusted according to the biological rhythm, it is possible to reproduce a sound rich in change. As a result, since the subject E is not bored, the nap during the daytime can be reduced and the subject E can be asleep at night.

  In addition, the control unit 240 may set the tempo of the sound content earlier than the biological rhythm of the biological information during the daytime when the subject E is awakened. Specifically, it is preferable that the control unit 240 generates biological rhythm information CTL1 that is earlier than heart rate information and respiration information in the daytime. This is because the sound heard by the subject E acts on the mind and body of the subject E, and can be induced to awaken by listening to a sound with a tempo faster than his own biological rhythm. On the other hand, the control unit 240 may set the tempo of the sound content to a tempo that is slower than the biological rhythm when guiding the sleep state of the subject E deeply at night. Specifically, it is preferable that the control unit 240 generates biological rhythm information CTL1 that is slower than heartbeat information and respiratory information at night.

  Further, the control unit 240 stores the biological rhythm information CTL1 in the biological rhythm table of the storage unit 250 in association with the time. In this way, the time transition of the biological rhythm information CTL1 is stored in the storage unit 250 because, when the biological information of the subject E cannot be obtained, the tempo of the sound content to be reproduced is adjusted according to the past biological rhythm information CTL1. Because it can. For example, if the location of the sensor 11 that detects biological information is fixed under the bed and the subject E moves around in the daytime, the biological rhythm information CTL1 cannot be generated. The past biological rhythm information CTL1 is read. For this reason, even when the subject E moves in the room in the daytime without wearing the wristwatch-type wearable device, the subject E can listen to the sound content according to the past biological rhythm of the subject E himself / herself. It becomes possible.

  The input unit 237 is for the subject E to input various settings, and corresponds to a touch panel or a keyboard. A caregiver or the like includes a start button for setting the time when the subject E enters the floor, or a start button operated when entering the floor and an end button operated when waking up. The bedtime of the bedridden subject E is a target time that the caregiver should start sleeping from this time in consideration of the circadian rhythm of the subject E, and the bedtime of the normal person Corresponds to time. The bed entry time set by the input unit 237 is stored in the storage unit 250.

In the present embodiment, the estimation unit 230 estimates the sleep depth indicating the depth of sleep of the subject based on the biological information output from the sensor 11.
In this example, the estimation unit 230 sets the sleep depth indicating the depth of sleep from the subject E to rest, deep sleep, and getting up to “Stand”, “Wake”, “REM”. ”,“ ST1 (first stage) ”,“ ST2 (second stage) ”,“ ST3 (third stage) ”, and“ ST4 (fourth stage) ”.
Human sleep is roughly divided into REM sleep with shallow sleep and non-REM sleep with deep sleep. At the time of falling asleep, it first shifts to non-REM sleep, and then shifts to REM sleep with a shallow sleep. A person's sleep repeats two types of sleep different in nature at a constant rhythm 4 to 5 times a night with a period of about 90 minutes. Thus, the depth of human sleep fluctuates with a period of about 90 minutes. In the following description, the time variation of the sleep depth in the overnight sleep is referred to as a sleep cycle. FIG. 3 shows an example of a hypnotic cycle.
In this example, the sleep depth indicating the depth of sleep is estimated in seven stages, but the first stage ST1 and the second stage ST2 are “shallow sleep”, and the third stage ST3 and the fourth stage ST4 are “deep sleep”. The sleep depth may be estimated in five stages.

Next, the evaluation unit 235 evaluates the sleep of the subject E at night using the sleep depth estimated by the estimation unit 230 and stores the evaluation result in an evaluation table stored in the storage unit 250. In the evaluation table, identification information for identifying sound content reproduced in the daytime on the same day and an evaluation value that is an evaluation result of nighttime sleep are associated with each other and stored.
The evaluation has the following aspects. In the first aspect, the sleep time from entering the bed to falling asleep is the subject of the evaluation. When the sleep depth reaches the second stage ST2, when it is determined to fall asleep, in the example of the sleep cycle shown in FIG. 3, the sleep time SIN is from time t0 to time t1. Then, the evaluation unit 235 compares the sleep time SIN with a plurality of threshold values, and generates an evaluation value that increases as the sleep time SIN decreases. A 2nd aspect makes sleep efficiency the object of evaluation. The sleep efficiency is assumed to be given by the ratio between the time when the sleep depth is deeper than the REM sleep and the time from entering the bed to getting up. Then, the evaluation unit 235 compares the sleep efficiency with a plurality of threshold values and generates an evaluation value that increases as the sleep efficiency increases. A 3rd aspect makes the total time of deep sleep the object of evaluation. Specifically, this is the total time for which the sleep depth is the third stage ST3 and the fourth stage ST4. And the evaluation part 235 compares the total time of deep sleep with a some threshold value, and produces | generates the evaluation value which becomes so high that total time is long. In the first to third aspects described above, for example, the evaluation value may be expressed in five stages. Furthermore, the evaluation value may be generated by appropriately combining the evaluations of the first to third aspects.

  The control unit 240 controls the operation of the sound source 40, and designates the sound content to be played during the day based on the evaluation result of the evaluation unit 235 from the plurality of sound contents stored in the content table. In this case, as a result of evaluating a certain sound content, the control unit 240 may continue to use the sound content if it is equal to or higher than a predetermined evaluation value, and may select another sound content if it is less than the predetermined evaluation value. . Alternatively, when subject E first uses the apparatus, a plurality of sound contents are evaluated in order as prior evaluation, and after evaluation of all sound contents is completed, the sound content having the highest evaluation value is designated. Playback and re-evaluation may be performed, and then the highest sound content including other content may be designated. Also, among the n awakening sound contents evaluated in advance in order, k (k is a natural number of k <n) sound contents are specified from the one with the highest evaluation value, and the identified k sound contents are You may specify sequentially.

  The sound source 40 will be described using an example in which the sound content is waveform data. The sound source 40 reads the waveform data of the sound content designated by the control unit 240 from the content table of the storage unit 250, and reproduces various musical sounds based on the read waveform data. FIG. 4 shows a detailed configuration of the sound source 40. The sound source 40 includes first to third sound source units 410 to 430, mixers 451 and 452, and equalizers 453 and 454. The first sound source unit 410 reproduces sound content linked to the breathing cycle BRm, the second sound source unit 420 reproduces sound content linked to the heartbeat cycle HRm, and the third sound source unit 430 plays the sound content of music. Reproduce. Note that a fourth sound source unit may be provided to reproduce the sound content of the background sound that is not linked to either the breathing cycle BRm or the heartbeat cycle HRm. Examples of such background sounds include wave sounds, wind sounds, murmur sounds, and hustle sounds.

In this example, one sound content includes a combination of a breath-linked sound reproduced at a tempo corresponding to the breathing cycle BRm, a heartbeat-linked sound reproduced at a tempo corresponding to the heartbeat cycle HRm, and music. In the content table, for example, data is stored as shown in FIG. The first waveform data BD indicates the waveform of the breath-linked sound, the second waveform data HD indicates the waveform of the heart-beat-linked sound, and the third waveform data AD indicates the waveform of the music.
Sound content is roughly divided into sound content for awakening and sound content for sleep. The first waveform data BD1 to BDn, the second waveform data HD1 to HDn, and the third waveform data AD1 to ADn shown in FIG. 5 are wake-up sound contents, while the first waveform data BDn + 1 to The BD2n, the second waveform data HDn + 1 to HD2n, and the third waveform data ADn + 1 to AD2n are sleep sound contents.

  The first to third sound source units 410 to 430 switch and reproduce the sound content stored in the storage unit 250 at the timing specified by the control unit 240, and output the digital content in a stereo two-channel format. The control unit 240 designates a certain sound content from among a plurality of sound contents for awakening during the daytime, and designates a certain sound content from among the plurality of sound contents for sleep at night. By the way, even if the sound content for awakening is switched to the sound content for sleep, the mind body of the subject E is not immediately relaxed and goes to sleep, and a certain amount of time is required. For this reason, the control part 240 refers to the sleep time memorize | stored in the memory | storage part 250, and the sound content which induces sleep from the sound content designated with respect to the sound source 40 before the preset sleep time ( For example, it is preferable to switch to BDn + 1 to BD2n, HDn + 1 to HD2n, and ADn + 1 to AD2n) and further set the tempo of the sound content to a tempo slower than the biological rhythm.

The mixer 451 mixes (adds) the left (L) signals output from the first to third sound source units 410 to 430, and similarly, the mixer 452 is output from each of the sound source units. The sound signal of light (R) is mixed.
The equalizer 453 gives sound quality (frequency characteristics) to the output signal of the mixer 451 and adjusts the volume. Similarly, the equalizer 454 imparts sound quality (frequency characteristics) to the output signal of the mixer 452 and adjusts the volume. Control information CTL3 for designating sound quality (frequency characteristics) and volume is generated by the control unit 240.
The control unit 240 supplies control information CTL2 for designating waveform data to be reproduced and designating sound parameters excluding the tempo to the sound source 40.

As described above, according to the present embodiment, the night sleep of the subject E is evaluated, and the evaluation result is used to determine the sound content to be reproduced in the daytime. Can improve nighttime sleep.
In addition, since the tempo of the sound content to be reproduced is controlled according to the biological rhythm of the subject E, the subject E can be kept bored during the day without getting bored. Furthermore, by setting the tempo faster than the biological rhythm, the subject E can be more awakened.

<Modification>
The present invention is not limited to the above-described embodiments, and various applications and modifications as described below are possible, for example. In addition, one or a plurality of arbitrarily selected aspects of application / deformation described below can be appropriately combined.

<Modification 1>
In each of the above-described embodiments, the biological information of the subject E is detected using the sheet-like sensor 11, but the present invention is not limited to this, and any biological information can be detected. A sensor may be used. For example, the electrode of the first sensor may be attached to the forehead of the subject E, and the brain waves (α wave, β wave, δ wave, θ wave, etc.) of the subject E may be detected. Further, a second sensor may be attached to the wrist of the subject E to detect, for example, a radial artery pressure change, that is, a pulse wave. Since the pulse wave is synchronized with the heartbeat, the heartbeat is indirectly detected. Further, a third sensor for detecting acceleration may be provided between the head of the subject E and the pillow, and the body movement of the subject E, specifically, respiration and heartbeat may be detected. In addition, as a type of sensor for detecting biological information, a pressure sensor, a pneumatic sensor, a vibration sensor, an optical sensor, an ultrasonic Doppler, an RF Doppler, a laser Doppler, and the like can be considered.

<Modification 2>
In the above-described embodiment, the sound content is reproduced based on the evaluation result, but the present invention is not limited to this.
The control unit 240 may specify sound content randomly at a predetermined rate in the selection of sound content. For example, it is possible to search for combinations and parameters that improve the effect by randomly changing the parameters (volume / sound quality / sound field / tempo) of heart rate-linked sounds, breath-linked sounds, and music that are elements of sound content. Also good.

<Modification 3>
In the above-described embodiment, the sound content is described as an example of the content that stimulates the subject E, but the present invention is not limited to this. In short, any content may be used as long as the subject E can be stimulated. For example, it may be optical content that controls light from a light source, or vibration content that controls vibration by a driving device. Specifically, optical content and vibration content are stored in the storage unit 250,
The content specified by the control unit 240 may be played back by the playback unit. Also in this case, the reproduction unit may modulate and reproduce the optical content and the vibration content using the biological rhythm information CTL1 output from the control unit 240.

<Modification 4>
In the embodiment described above, the sound content is reproduced in the sound source 40 at the tempo specified by the biological rhythm information CTL1, but the present invention is not limited to this. For example, the plurality of sound contents stored in the content table include sound contents with different tempos, and the control unit 240 may specify sound contents to be reproduced by the sound source 40 according to the biological rhythm. In this case, the control unit 240 may specify that the tempo of the sound content to be reproduced by the sound source is faster than the biological rhythm during the daytime. On the other hand, when guiding the sleep state of the subject E deeper at night, it is preferable to specify that the tempo of the sound content to be reproduced by the sound source 40 is slower than the biological rhythm. Further, the sound content linked to breathing or heartbeat may be a commonly distributed music piece, and a plurality of music pieces of various tempos are stored in advance in the content table of the storage unit 250, and the breathing linked sound tempo is stored. Or you may make it select and reproduce | regenerate the music of the tempo which matched the heartbeat interlocking sound tempo. Here, when switching music, it is better to match the beat of the previous music with the beat of the subsequent music.
Further, the sound content may be singing or reading, and in that case, it may be based on speech synthesis.

<Modification 5>
In the above-described embodiment, while the sound content for awakening is reproduced during the daytime, the sound content for sleep is reproduced at night. However, the present invention is not limited to this, and the sound content for awakening is reproduced during the daytime. It is not necessary to reproduce sound content at night. In this case, similarly to the embodiment described above, nighttime sleep may be evaluated, and sound content for daytime awakening may be selected based on the evaluation result.

DESCRIPTION OF SYMBOLS 1 ... System, 11 ... Sensor, 20 ... Content reproduction apparatus, 40 ... Sound source, 51, 52 ... Speaker, 210 ... Acquisition part, 230 ... Estimation part, 240 ... Control part.

Claims (6)

An acquisition unit for acquiring biological information of the subject;
A playback unit that plays back a specified content from multiple contents in the daytime;
Based on the biological information at night acquired by the acquisition unit, an estimation unit that estimates a sleep depth indicating the depth of sleep of the subject at night, and
An evaluation unit that monitors the transition of the sleep depth and evaluates the influence of the content played during the day on the sleep of the subject at night;
Based on the evaluation result of the evaluation unit, the control unit for designating the content that the reproduction unit should reproduce in the daytime from the plurality of content,
A content playback apparatus comprising:   The content playback apparatus according to claim 1, wherein the control unit switches content specified to the playback unit to content that induces sleep before a preset time of entry.   The content reproduction apparatus according to claim 1, wherein the content is sound content, and the reproduction unit is a sound source that reproduces the sound content. The control unit generates a biological rhythm of the subject based on the biological information,
The sound source adjusts the tempo of the sound to be reproduced according to the biological rhythm.
The content reproduction apparatus according to claim 3, wherein A storage unit for storing the biological rhythm;
The sound source adjusts the tempo of the sound to be reproduced according to the biological rhythm read from the storage unit.
The content reproduction apparatus according to claim 4, wherein A program for a content playback device provided with a computer,
The computer,
An acquisition unit for acquiring biological information of the subject;
A playback unit that plays back a specified content from multiple contents in the daytime;
Based on the biological information at night acquired by the acquisition unit, an estimation unit that estimates a sleep depth indicating the depth of sleep of the subject at night, and
An evaluation unit that monitors the transition of the sleep depth and evaluates the influence of the content played during the day on the sleep of the subject at night;
Based on the evaluation result of the evaluation unit, the playback unit functions as a control unit for designating content to be played in the daytime from the plurality of contents.
A program for a content playback apparatus.

Images