JP5155896B2 - Sound environment generator for bedding, sleep environment system - Google Patents

Description

  The present invention forms a sleep environment including a bedding sound environment generation device that generates an environmental sound for inducing a comfortable sleep or wake-up in a sleep space by using the bedding and an environmental sound generated by the bedding sound environment generation device. It is related with the sleep environment system for.

  In recent years, the number of urban dwellers complaining about sleep is increasing with increasing stress and shortening sleep time. Therefore, proposals to improve the quality of sleep have been made, aiming at the effects of sleep, relaxation, healing, etc., controlling bedding of various forms and materials and stimulation by light, sound, temperature, scent, etc. in the sleeping space Many devices are provided.

  By the way, it is known that auditory stimuli are important elements in falling asleep and getting up among stimuli given to users. In order to give auditory stimuli for the purpose of falling asleep, getting up, and relaxing, as a device to control the environmental sound during sleep, a speaker is provided on the headboard of the bed, or a speaker is built in the pillow. Some output environmental sounds. As environmental sounds, environmental sounds collected from natural environments, music, electronically generated artificial sounds, and the like are used (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2005-334283 (paragraph 0026)

  By the way, in the technique described in Patent Document 1, a recorded sound is simply reproduced from a speaker using a sound reproducing device such as a CD (compact disc) player, and the speaker is connected to the user's head. A sound image is formed only in the arranged direction. Therefore, the user feels uncomfortable and there is a problem that an appropriate sound environment cannot be given to the user. In other words, when a speaker is provided on the headboard of the bed, environmental sounds can be heard from above, and when a speaker is provided on the pillow, environmental sounds can be heard from behind, so the user is unnatural in the position of the sound image. There is a problem that the user feels uncomfortable and cannot feel relieved by this uncomfortable feeling and cannot form a sound environment for relaxation or sleep.

  In order to solve this type of problem, it is conceivable to arrange a large number of speakers around a bedding such as a bed to form an acoustic space such as a 5.1 channel. It is difficult to arrange the speaker around the bedding due to the restriction of the installation area. Even if it is possible to place a large number of speakers around the bedding, when multiple people with different bedtime and wake-up time share a bedroom (for example, when a couple uses the same bedroom) However, it is impossible to individually hear the environmental sound of each individual, and the problem arises that the quality of sleep of other people is lowered in order to improve the quality of sleep of one of the users.

  The present invention has been made in view of the above-mentioned reasons, and the purpose thereof is to form a sound environment in a sleeping space with bedding so that the sleep of the other person in the bedroom is not disturbed, but the sleep of the user. Provided is a sound environment generation device for bedding that can improve the quality and can generate a sound environment without a sense of incongruity by forming a sound image three-dimensionally at a desired position around the user. A further object is to provide a sleep environment system that forms a sleep environment in the bedroom using the sound environment generation device for bedding.

  The present invention includes a two-channel speaker provided on the bedding and an acoustic processing device that generates a sound signal to the speaker so that a user in a sleeping position on the bedding can recognize a sound image three-dimensionally. The sound processing apparatus includes a sound source data holding unit that holds at least one type of sound source data, a sound image localization processing unit that controls a head-related transfer function for the sound source data and controls a position of a sound image output from the speaker, And a control unit that selects sound source data according to a parameter set set in association with sleep and controls the position of a sound image.

  The parameter set preferably includes a timing for selecting the type of sound source data and a timing for controlling the position of the sound image, as well as the type of sound source data and the position of the sound image.

  Furthermore, it is preferable that the control unit includes at least two types of parameter sets: a sleep induction phase for inducing sleep and a wake-up induction phase for inducing wake-up.

  It is preferable that the parameter set of the sleep inducing phase is set such that the sound image distance is gradually set away from the user's head with time. Alternatively, it is preferable that the parameter set of the wake-up guidance phase is such that the direction of the sound image is set so that the sound image turns around the user's head over time.

  The parameter set preferably includes sound source data and a position of a sound image, and it is allowed to associate one type of sound source data with a plurality of types of sound image positions. The parameter set preferably specifies a video to be displayed on a video display device that can be viewed by a user on the bedding, and sets sound source data and a position of a sound image in association with the video.

  The bedding may be a bed including a headboard in which the speaker is incorporated, and the headboard may be provided with a recess serving as a guide for the position of the user's head at the center in the left-right direction. Further, the speaker has a horizontally long diaphragm having a horizontal dimension longer than the vertical dimension, or a plurality of speakers are provided for each channel, and the speakers of each channel are arranged in the horizontal direction. It is desirable to adopt a configuration having

  The sound source data holding unit may be able to acquire sound source data from outside.

  You may construct | assemble a sleep environment system by providing at least one of a lighting fixture and an air conditioner as an additional apparatus with the sound environment generation apparatus for bedding as an additional apparatus, and making an additional apparatus link with operation | movement of the sound environment generation apparatus for bedding.

  According to the configuration of the present invention, the position of the sound image of the sound output from the speaker is controlled by using a 2-channel speaker and controlling the head-related transfer function for the sound source data. It is possible to control the position of the sound image three-dimensionally in the vicinity of the user, and it is possible to eliminate the uncomfortable feeling caused by the sound being heard from above and behind the user's head, thereby forming a comfortable sound environment. That is, a feeling of being wrapped in sound when falling asleep or getting up can be obtained, so that the effect of relaxation (relaxation and healing) can be enhanced, and the awakening effect can be enhanced. In addition, since the speaker is provided in the bedding, it is not necessary to secure a space other than the extra bedding in the bedroom, so that space is saved and a sound environment can be formed around the user. Therefore, it is possible to improve the quality of sleep of the user while not disturbing the sleep of others in the bedroom. Note that the sound image makes the user feel the sound source with direction and distance in sound reproduction.

  In addition, the parameter set for controlling the type of sound source data and the position of the sound image includes the timing for selecting the type of sound source data and the timing for controlling the position of the sound image, so that the sound environment can be changed over time. It becomes possible to provide a sound environment rich in change.

  By providing at least two types of parameter sets, the sleep-inducing phase for inducing sleep and the wake-up inducing phase for inducing wake-up, it is possible to provide a sound environment suitable for both sleep and wake-up. Thus, it is possible to further improve the quality of sleep by optimizing the sleep and waking up.

  In the sleep-inducing phase, the sound image is gradually moved away from the user's head over time, making it easier to induce sleep.In the wake-up phase, the sound image rotates around the user's head over time. The wake-up is facilitated by holding.

  When it is allowed to associate the position of multiple types of sound images with one type of sound source data, it provides a rich sound environment by changing the position of the sound image even with a small number of types of sound source data. It becomes possible to do. Also, by setting the sound source data and the position of the sound image in association with the video displayed on the video display device that can be viewed by the user on the bedding, it is possible to induce sleep or wake up not only by sound but also visually. it can.

  In the configuration in which the speaker is incorporated in the headboard of the bed, the user's head position can be obtained by forming a recess in the center of the headboard in the horizontal direction. By matching the positions of the unit and the speaker to the assumed positions, the sound image can be accurately localized and a sound image can be formed at a desired position. That is, it is possible to provide the user with a desired sound environment and improve the quality of sleep.

  In addition, if a speaker with a long diaphragm in the left-right direction is used as a speaker for each channel, or if a configuration in which a plurality of speakers are arranged in the left-right direction for each channel is adopted, the range in which the sound image is formed in the left-right direction Even if the position of the user's head is shifted, it is possible to provide the user with a desired sound environment and improve the quality of sleep.

  If the sound source data can be acquired from the outside such as the center server, it is only necessary to hold the sound source data to be used, so that the storage capacity for holding the sound source data can be reduced. Further, by updating to new sound source data, it becomes possible to give the sound source data a fresh taste.

  In the sleep environment system that links lighting equipment and air conditioners as additional devices in conjunction with the operation of the sound environment generator for bedding, the quality of sleep is further improved by controlling the environment other than the sound environment in the sleep space. It becomes possible to increase.

1 is a schematic configuration diagram illustrating a first embodiment. It is a schematic block diagram of the other usage example same as the above. It is a schematic block diagram of other usage examples same as the above. It is a principal part perspective view same as the above. It is a principal part perspective view which shows the structural example of the speaker used for the same as the above. It is a principal part perspective view which shows the other structural example of the speaker used for the same as the above. FIG. 5 is a schematic configuration diagram showing a second embodiment.

(Embodiment 1)
In the present embodiment, as illustrated in FIG. 1, the bed 2 is illustrated as a bedding, and a pair of left and right speakers 22 are incorporated in the headboard 21 of the bed 2. The speaker 22 reproduces the audio signal generated by the sound processing device 1 so as to induce comfortable sleep or wake-up.

  The sound processing device 1 includes a sound source data holding unit 11 including a storage device (preferably a semiconductor memory, but may be a hard disk device) that holds at least one type (preferably a plurality of types) of sound source data; The sound image localization processing unit 12 and the crosstalk compensation processing unit 13 for controlling the position (that is, abbreviated as “sound image” unless otherwise required) (that is, localizing the sound image), and the sound source data from the sound source data holding unit 11 And a control unit 10 having a function of selecting.

  The sound source data stored in the sound source data holding unit 11 is data obtained by converting the environmental sound collected from the natural environment into a predetermined format that can be digitally processed. For example, the sound of murmur, the voice of a bird, the voice of an insect, Includes wind, waterfall, rain, and wave sounds. As the sound source data, environmental sounds that relax the user H (for example, sounds including 1 / f fluctuation) are collected from the natural environment and used.

  Here, it is assumed that the sound source data holding unit 11 stores 256 types of sound source data. If there is no limitation on the storage capacity of the sound source data holding unit 11 or data management, it is possible to store more types of sound source data. However, since the audio signal reproduced by the speaker 22 is generated by appropriately combining a plurality of types of sound source data and appropriately controlling parameters for the sound source data, a sufficiently rich sound can be obtained even with a relatively small number of sound source data. Can be generated.

  The parameters for the sound source data include the type of the sound source data, the position of the sound image (elevation angle, azimuth angle, distance), the timing for selecting the type of the sound source data, and the timing for controlling the position of the sound image. A set of these parameters (parameter set) is stored in a schedule storage unit 14 provided in the control unit 10. The elevation angle is assumed to be 0 degree on the horizontal plane, and the azimuth angle is assumed to be 0 degree on the head side of the user H, and the angle increases counterclockwise. Hereinafter, the elevation angle and the azimuth angle regarding the sound image are collectively referred to as a sound image direction. The parameter set is basically set in advance at the time of product shipment, and a scene name is associated with each parameter set. A display device 15 and an operation device 16 are connected to the control unit 10, and a scene name can be selected by operating the operation device 16. Further, the user H may be able to set the parameter set using the display device 15 and the operation device 16.

  A segment type or dot matrix type display can be used for the display device 15, and a mechanical switch or a touch pad can be used for the operation device 16. For example, a segment type light emitting diode display or a dot matrix type liquid crystal display is used for the display device 15 and a mechanical switch such as a push button switch is used for the operation device 16, and the display device 15 and the operation device 16 are arranged side by side. Adopt the configuration to do. Alternatively, a configuration of a touch panel display in which a dot matrix type liquid crystal display is used for the display device 15 and a transparent touch pad is used for the operation device 16 and the operation device 16 is arranged on the screen of the display device 15 is employed.

  As scene names, for example, words representing environments such as early summer forests and autumn beaches, and words representing place names such as Hawaii and Kamikochi, scene names using the display device 15 and the operation device 16 are used. Can be selected. When selecting a scene name, the scene name is presented in order on the display device 15 and a desired scene name is determined by the operation device 16, or a symbol (numerical value or the like) corresponding to the scene name is input from the operation device 16. When a parameter set is designated by a scene name, it is desirable that at least a part of the sound corresponding to the parameter set is output from the speaker 22 so that the user H can confirm the contents.

  By the way, the timing of using the sound source data in the parameter set is used for selection of the sound source data in the sound source data holding unit 11. The parameter of the position of the sound image is given to the sound image localization processing unit 12 and is used to control the position of the sound image with respect to the sound heard near the head of the user H lying on the bed 2.

  Here, in the present embodiment, the signal processing from the sound source data holding unit 11 to the crosstalk compensation processing unit 13 is performed by digital signal processing, and the audio signal output from the crosstalk compensation processing unit 13 is an analog signal. Although assumed, a configuration in which the speaker 22 performs digital-analog conversion may be employed.

  The sound image localization processing unit 12 and the crosstalk compensation processing unit 13 are configured by a signal processing processor (DSP), and the head image transfer function can be adjusted by the filter coefficient given from the control unit 10 in the sound image localization processing unit 12. The crosstalk compensation processing unit 13 functions as a plurality of (six in the illustrated example) filters F21 to F26, and the crosstalk compensation processing unit 13 is capable of adjusting a transfer function with predetermined filter coefficients (four in the illustrated example). Functions equivalently to the filters F31 to F34.

  The sound image localization processing unit 12 generates a two-channel signal from the sound source data stored in the sound source data holding unit 11 in order to output two channels of sound from the pair of left and right speakers 22, and a filter F21 for each channel. To F26. Therefore, the number of filters F21 to F26 in the sound image localization processing unit 12 is the number of products (that is, six) of the number of types of sound source data (three types in the illustrated example) and the number of channels (two). Furthermore, the sound image localization processing unit 12 is provided with addition units S21 and S22 that superimpose audio signals, whose head-related transfer functions are adjusted by the filters F21 to F26, for each channel. Therefore, the sound image localization processing unit 12 uses the outputs of the addition units S21 and S22 as audio signals of the respective channels, so that the sound corresponding to each sound source data is obtained for each sound corresponding to the sound source data selected in the sound environment. The position of the sound image can be controlled.

  On the other hand, the crosstalk compensation processing unit 13 has a function of adjusting a transfer function in order to compensate for characteristics of a reproduction system such as crosstalk when an audio signal is reproduced by two speakers 22. A pair of filters F31 and F32 that control the transfer function for each channel and a pair of filters F33 and F34 that control the transfer function to the other channel are provided. Therefore, the number of the filters F31 to F34 in the crosstalk compensation processing unit 13 is the square of the number of channels (2) (that is, 4). In addition, the crosstalk compensation processing unit 13 is provided with addition units S31 and S32 that superimpose the audio signals that have passed through the filters F31 to F34 for each output channel. With this configuration, the crosstalk of the audio signal between channels is adjusted to compensate for the characteristics of the reproduction system including the speaker 22, and the sound image for each sound corresponding to each sound source data that the user H listens to is accurate and clear. It is possible to localize.

  The two-channel audio signals output from the adding units S31 and S32 of the crosstalk compensation processing unit 13 are respectively input to the left and right speakers 22 through the amplifier 17, and the sound corresponding to the sound source data is reproduced.

  The operation will be described using a specific example. Here, it is assumed that the selected parameter set is set assuming a scene in which environmental sounds from the surrounding natural environment are heard on a wide plain. In the parameter set corresponding to this scene, sound source data 1 (bird's voice), sound source data 3 (river's sound), sound source data 6 (insect's voice) are obtained from the sound source data stored in the sound source data holding unit 11. ) Three types of sound source data are selected. That is, in the present embodiment, the sound source data 1, 3, and 6 are selected from 256 types of sound source data stored in the sound source data holding unit 11. Here, only three types of sound source data are used. Of course, the sound source data holding unit 11 holds other sound source data. Further, since the scene is lying on a large plain, the position of the sound image by the parameter set is determined so that the surrounding sound surrounds the user H. Therefore, the elevation angle and azimuth angle of the sound image are determined so that the sound image is localized mainly in the plane on which the user H lies. That is, the filter coefficients of the filters F21 to F26 provided in the sound image localization processing unit 12 are set using the parameter set.

  In the sound image localization processing unit 12, a convolution operation between the sound source data and the filter coefficient is performed by each of the filters F21 to F26, and an audio signal accompanied with information on the position of the sound image of the sound corresponding to each sound source data is generated. For example, if the sound image of the bird's voice (sound source data 1) is set in a direction with an elevation angle of 30 degrees and an azimuth angle of 30 degrees when viewed from the user H, a filter corresponding to an elevation angle of 30 degrees and an azimuth angle of 30 degrees The coefficient is given to the filters F21 and F24 in the sound image localization processing unit 12.

  When the filters F21 to F23 are the left channel and the filters F24 to F26 are the right channel, the sound source data 1 and the filter coefficients are obtained by applying filter coefficients T21 and T24 to the filters F21 and F24 for the left ear and the right ear, respectively. A convolution operation with T21 and T24 is performed. The same processing is simultaneously performed in the corresponding filters F22, F23, F25, and F26 for the sound of the river murmur (sound source data 3) and the insect voice (sound source data 6).

  Here, in order to localize the sound image at a desired position, it is necessary to determine the sound pressure to the left and right external auditory canal entrances of the user H. Therefore, the sound image localization processing unit 12 places the desired sound source data at the desired position. A process of generating left and right channel signals is performed so that the sound pressure necessary to localize the sound image is obtained.

  In addition, since the audio signal reaches the left and right ears of the user H after being converted into sound waves by the speaker 22, the sound pressure of the sound waves output from the left and right speakers 22 and the entrance of the user H's outer road It is different from the sound pressure of the sound wave that reached. That is, since the sound pressure set in consideration of the localization of the sound image in the sound image localization processing unit 12 is different from the sound pressure of the sound wave reaching the user's H external road entrance, the sound image assumed in the sound image localization processing unit 12 Compensation processing is performed in the crosstalk compensation processing unit 13 so as to localize the position. In this compensation processing, processing is performed to compensate for crosstalk components in which sound waves output from the left and right speakers 22 reach the left and right ears, and frequency characteristics based on transfer characteristics to the ears of the speakers 22 and the user H.

  As described above, according to the parameter set stored in the schedule storage unit 14, the sound image localization processing unit 12 and the crosstalk compensation processing unit 13 control the position of the sound image for each sound corresponding to the sound source data, thereby The user H who is supine is recognized not only from the direction in which the speaker 22 is installed, but also from the various surrounding directions, and can form a so-called pseudo-surround acoustic space. Become.

  By the way, the above-described device is intended to induce comfortable sleep or wake-up in the sleep space, and therefore the parameter set set in the schedule storage unit 14 is associated with the sleep or wake-up of the user H. The parameter set is set for each stage associated with sleep, and in this embodiment, as each stage, the relaxation phase before sleep that removes the tension of the user H before sleep, and the user H is induced to sleep. A sleep induction phase, a sleep phase during sleep of the user H, and a wake-up induction phase are assumed to guide the user H to wake up. That is, before sleep, it operates in the sleep induction phase after the relaxation phase before sleep, and operates in the wake-up induction phase when getting up. However, the relaxation phase before falling asleep can be omitted, and it is only necessary to have a parameter set corresponding to at least two types of phases, the sleep induction phase and the wake-up induction phase. In addition, the sleep phase is a state in which no sound is output from the speaker 22, and a parameter set is not substantially set. The scene described above can be selected for each phase.

  Table 1 shows an example of parameter set settings in each phase. A set of data corresponding to each phase in Table 1 is a parameter set. In the example shown in Table 1, each phase other than the sleep phase is set to 10 minutes. Further, in the parameter set of Table 1, the elevation angle and the azimuth angle are fixedly set for each sound source data for each sound source data. That is, the elevation angle and the azimuth angle are fixed for each sound corresponding to each sound source data.

  When the relaxation phase before sleep is provided, the sleep induction phase is automatically activated upon completion of the relaxation before sleep phase. However, the actions of the relaxation phase before sleep and the wake-up induction phase are Is activated by operating the switch, etc., or by specifying the time. For example, the relaxation phase before going to sleep is preferably started by operating the operation device 16 attached to the control unit 10. In addition, when the operation of the wake-up guidance mode is activated so that the user H can wake up at the wake-up time set by the user H, a clock unit having a function of measuring the current time and a function of outputting a notification signal when the set time is reached ( (Not shown) may be provided, and the operation of the wake-up guidance phase may be activated by a notification signal.

  In the parameter set shown in Table 1, the position of the sound image is fixedly set, and the distance to the sound image is omitted. In the sleep induction phase or the wake-up induction phase, the position of the sound image (including the distance) is set. It is thought that the effect of inducing sleep and waking up is higher when it is changed. For example, in the sleep-inducing phase, if the distance is controlled so that the sound image gradually moves away from the head of the user H over time, the sleep-inducing effect is enhanced. In the wake-up phase, the head of the user H If the direction of the sound image is changed so that the sound image rotates with the passage of time around the portion, the effect of guiding to wake up is enhanced.

  The distance to the sound image is controlled by a filter coefficient related to the distance in the parameter set given to the sound image localization processing unit 12. Therefore, a distance coefficient control unit (not shown) that changes the filter coefficient (distance coefficient) related to the distance with the passage of time is provided in the control unit 10, and the control unit 10 starts the operation of the sleep induction phase. The distance coefficient control unit is activated, and the distance coefficient control unit is instructed to change the distance coefficient so as to increase the distance of the sound image as time passes. .

  Similarly, an angle coefficient control unit (not shown) that changes a filter coefficient (angle coefficient) related to the azimuth angle (elevation angle as necessary) with the passage of time is provided in the control unit 10. When the operation of the wake-up guidance phase is activated, the angle coefficient control unit is activated, and an instruction is given to the angle coefficient control unit to change the angle coefficient so that the sound image rotates or turns around the user H over time. By giving, the above-mentioned operation in the wake-up guidance phase becomes possible.

  It is desirable that the change speed of the distance and direction can be appropriately set by using the operation device 16. Further, by providing the control unit 10 with a distance coefficient control unit and an angle coefficient control unit, the distance and direction of the sound image can be changed with time while the parameter set stored in the schedule storage unit 14 is a fixed value. It is possible to make various changes to the sound environment while reducing the amount of data stored in the schedule storage unit 14.

  Moreover, since the sound image localization processing unit 12 can control the filter coefficient for each sound source data, by controlling the direction and distance of the sound image for each sound source data, various changes are made to the sound environment even with the same parameter set. be able to. That is, the selection information for selecting the sound source data and the filter information for controlling the position (direction, distance) are provided as independent information, the selection information is given to the sound source data holding unit 11, and the filter information is given to the sound image localization processing unit 12. Therefore, even if the same sound source data is selected, a different sound environment can be provided to the user H.

  In the above configuration example, only the sound environment in the sleep space has been described, but in addition to the sound environment, the light from the lighting device, the image from the video display device, the scent from the scent generator, the temperature and humidity from the air conditioner, the bedding (mat) If the various environments or stimuli selected from the hardness and shape of the pillow and the like and the vibration applied to the bedding are linked with the sound environment, the effect of inducing sleep and getting up can be further enhanced.

  For example, as shown in FIG. 2, a video display device (liquid crystal display device, projector device) 3 that can watch a video in a state where the user H is lying is provided, and the video displayed on the video display device 3 is displayed. The associated sound source data is selected from the sound source data holding unit 11 and a filter coefficient is given to the sound image localization processing unit 12 so that the sound image 4 is localized in the vicinity of the video display device 3. That is, the parameter set includes parameters for instructing a video to be displayed on the video display device 3. The video displayed on the video display device 3 in association with the relaxation phase before falling asleep is not a broadcast or movie video, but a video that matches the sound content of the sound source data. A murmur image or the like is displayed on the image display device 3.

  In this way, the video associated with the sound source data is displayed on the video display device 3, and the sound image 4 is set in the vicinity of the video display device 3, so that the auditory sense can be compared with the case where only the sound environment is used when producing the scene. In addition, by giving the user H an image of a scene that is assumed not only visually, it is possible to enhance the effect of the environment in which the user H relaxes.

  Moreover, in the structural example shown in FIG. 3, in order to provide the sleep environment system which forms the environment of sleep space, the case where many additional apparatuses are made to interlock | cooperate is shown. In the illustrated example, in addition to the sound environment, as an additional device for controlling light, a lighting fixture 31 provided on the ceiling, a lighting fixture 32 provided on the headboard 21, a lighting fixture 33 provided on a wall surface, and an electric curtain 34 provided on a window are provided. Show. In addition, an audiovisual device 35 that presents an image is provided, an air conditioner 36 that controls temperature and humidity is provided, a scent generator 37 is provided on the headboard 21 to control the scent, and an air purifier that purifies the air in the bedroom. A container 38 is also provided. Furthermore, the bed 2 has a reclining function, and the mattress has a built-in vibrator that gives vibration.

  In this sleep environment system, a dimmer 39 that performs dimming control of the lighting fixture 31 on the ceiling is attached to the wall surface, and further, the device interlock control device 5 that controls each of the above-described additional devices in conjunction with the control unit 10. Is provided. The apparatus interlocking control device 5 has a function of transmitting and receiving a wireless signal (indicated by a broken line in the figure) using infrared as a transmission medium, controls the lighting fixture 31 via the dimmer 39, the electric curtain 34, Control of the audiovisual apparatus 35 and the air conditioner 36 can be performed using a wireless signal. The other devices are connected to the device interlocking control device 5 via a control line.

  By using such a sleep environment system, it is possible to form a comfortable environment for encouraging falling asleep and getting up in the sleep space, and an effect of improving the quality of sleep can be expected. In addition, although the control content of the sleep environment system is not particularly described, control suitable for each phase described above may be performed. For example, the light environment is controlled so that it gradually fades with time in the sleep induction phase, and gradually increases with time in the wake-up induction phase. A relaxing scent may be released during the sleep induction phase, and a refreshing scent may be released during the waking induction phase.

  In the configuration example described above, the head side surface of the user H in the headboard 21 of the bed 2 is a flat surface, and the two speakers 22 are arranged side by side on this surface. Here, when the sound image is formed as described above, the position of the sound image changes depending on the positional relationship between the speaker 22 and the head of the user H, so that the sound image is accurately localized at the position set by the parameter set. Therefore, it is necessary to define the position of the head of the user H and the orientation of the face. In the configuration described above, there is no guideline for defining the position of the head on the headboard 21, but it is considered that the head is positioned near the center in the width direction of the bed 2 at bedtime. It is possible to localize the sound image.

  As described above, in order to accurately localize the sound image at the position set by the parameter set, it is necessary to define the position of the head of the user H and the orientation of the face. Therefore, as shown in FIG. 4, a configuration is adopted in which a recess 23 is provided on the surface of the head board 21 on the head side of the user H so that the user H can use the head position as a guide. be able to. The recess 23 is provided in the vicinity of the center portion of the headboard 21 in the left-right direction, and is formed so that the inner peripheral surface is curved in a cross section along the upper surface of the bed 2.

  Each speaker 22 is arrange | positioned on either side on both sides of the center of the recess 23 in the left-right direction (width direction) of the bed 2. As shown in FIG. Specifically, the speakers 22 are respectively disposed on the left and right inner surfaces of the recess 23 as illustrated, or are disposed on the left and right sides of the head board 21 with the recess 23 interposed therebetween. In the illustrated example, the sound wave output from the speaker 22 goes to the center side of the recess 23.

  By adopting the configuration shown in FIG. 4, the user H who lies on the bed 2 can obtain an indication of the position of the head due to the presence of the recess 23, and the center of the recess 23 in the width direction of the bed 2. By positioning the vicinity of the center of the left and right of the head in the vicinity, the sound image can be accurately localized at the position set by the parameter set.

  In the configuration example shown in FIG. 1, it is assumed that the speaker 22 has a circular front shape and the wavefront of the sound wave output from the speaker 22 is spherical. The time difference between the sound waves output from the left and right speakers 22 reaching the left and right ear canal entrances of the user H is considered to hardly change even if the head of the user H moves left and right. It is done. That is, even if the position of the head of the user H moves left and right, the position of the sound image hardly changes, and the sound image can be accurately localized at the position set by the parameter set.

  Therefore, in order to accurately localize the sound image at the position defined by the parameter set, as shown in FIG. 5, the speaker 22 that outputs the sound of each channel has a diaphragm with an elliptical or oval front shape. It is also possible to employ a configuration in which the bed 2 is arranged on the headboard 21 so that the dimension in the width direction of the bed 2 is longer than the dimension in the vertical direction. Alternatively, as shown in FIG. 6, a plurality of pairs of small speakers 22 having a circular front shape (three pairs in the illustrated example) are used, and a plurality of speakers 22 are straightened in the width direction of the bed 2 for each channel. The speakers 22 may be arranged on a line and arranged at a small pitch for each channel. In the configuration shown in FIG. 6, the speakers 22 of each channel are connected in parallel, and the same audio signal is input to the speakers 22 of the same channel.

  The configuration shown in FIG. 5 and the configuration shown in FIG. 6 can obtain substantially the same effect with respect to the position of the sound image. If the configuration shown in FIG. 5 is adopted, it is only necessary to provide one speaker 22 for each channel, so the number of parts is not increased and the configuration is simple compared to the configuration shown in FIG. If the configuration shown in FIG. 6 is adopted, the front shape of the speaker 22 is circular, and the shape of the region for outputting sound can be formed in a desired shape depending on the number and arrangement of the speakers 22, thereby facilitating the design. .

  As described above, a sound image is generated using the sound output from the speaker 22 provided on the headboard 21 of the bed 2 and the sound environment around the user H who lies on the bed 2 is formed. There is no need to install a large number of speakers to obtain a three-dimensional sound environment with only the bed 2. In addition, since the environmental sound collected from the natural environment is used, it is possible to obtain a sense of realism as if you were lying in the natural environment.

  The sound source data is not limited to the environmental sound collected from the natural environment, and may be music or artificial sound. In the above-described operation, the sound image localization processing unit 12 and the crosstalk compensation processing unit 13 sequentially process the sound source data in real time to determine the position of the sound image. However, the sound image localization processing unit 12 performs the processing in advance. The performed audio signal may be stored, and the stored audio signal may be input to the speaker 22. The same applies to the processing in the crosstalk compensation processing unit 13. Further, instead of providing the speaker 22 on the head board 21, the speaker may be incorporated in a pillow or mattress.

(Embodiment 2)
In the first embodiment, the sound source data stored in advance in the sound source data holding unit 11 is used and the parameter set for each scene stored in the schedule storage unit 14 is used. However, the sound source data and the parameter set can be changed. Then, it becomes possible to change the sound environment in various ways. When changing the sound source data and the parameter set, a configuration in which the sound source data and the parameter set are stored in an exchangeable storage medium such as a memory card can be considered.

  However, in this embodiment, as shown in FIG. 7, in order to reduce the storage capacity of the sound source data holding unit 11 and the schedule storage unit 14, a communication function unit that enables connection to a communication network 6 such as the Internet. 18 is provided so that sound source data and parameter sets can be acquired by data communication from the center server 7 provided in the communication network 6.

  If it is this structure, the manufacturer which provides the bedding sound environment generation apparatus or sleep environment system mentioned above, or the provider of sound source data and a parameter set will register sound source data and a parameter set in the center server 7. Thus, the user H can acquire and use the sound source data and the parameter set from the center server 7. That is, it is possible to use various types of sound source data and parameter sets while reducing the storage capacity of the sound source data holding unit 11 and the schedule storage unit 14.

  Since the parameter set is related to the sound source data, it is desirable to acquire the sound source data and the parameter set at the same time. That is, when a specific scene is selected using the display device 15 and the operation device 16, a parameter set corresponding to the scene is acquired from the center server 7 by data communication. At this time, the sound source data usable in the scene is also centered. Obtain from the server 7. The parameter set acquired from the center server 7 is stored in the schedule storage unit 14, and the sound source data acquired from the center server 7 is stored in the sound source data holding unit 11.

  The schedule storage unit 14 preferably has a storage capacity sufficient to store a plurality of scenes. If the storage capacity is insufficient when a parameter set of a new scene is acquired from the center server 7, the old parameter set is used. Delete them in order. The sound source data holding unit 11 may store sound source data necessary for the parameter set registered in the schedule storage unit 14 and delete sound source data not included in the scene of the schedule storage unit 14. Other configurations and operations in the present embodiment are the same as those in the first embodiment.

1 Sound processor 2 Bed (bedding)
DESCRIPTION OF SYMBOLS 3 Video display apparatus 4 Sound image 5 Apparatus interlocking control apparatus 6 Communication network 7 Center server 10 Control part 11 Sound source data holding part 12 Sound image localization process part 13 Crosstalk compensation processing part 14 Schedule memory | storage part 15 Display apparatus 16 Operation apparatus 17 Amplifier 18 Communication Function part 21 Headboard 22 Speaker 23 Recess 31 Light fixture (additional device)
32 Lighting equipment (additional equipment)
33 Lighting equipment (additional equipment)
34 Electric curtain (additional equipment)
35 Audiovisual equipment (additional equipment)
36 Air conditioner (additional equipment)
37 Aroma generator (additional device)
38 Air cleaner (additional equipment)
H users

Claims (12)

  An acoustic processing apparatus, comprising: a two-channel speaker provided in the bedding; and an acoustic processing device that generates a sound signal to the speaker so that a user in a sleeping posture on the bedding recognizes a sound image three-dimensionally Is a sound source data holding unit for holding sound source data, a sound image localization processing unit for controlling the position of the sound image of the sound output from the speaker by controlling a head-related transfer function for the sound source data, and a parameter set set in association with sleep A sound environment generating apparatus for bedding comprising a control unit that selects sound source data according to the control and controls a position of a sound image.   2. The bedding sound environment generation apparatus according to claim 1, wherein the parameter set includes a timing for selecting the type of sound source data and a timing for controlling the position of the sound image, together with the type of sound source data and the position of the sound image.   The bedding sound environment generation device according to claim 2, wherein the control unit includes at least two types of parameter sets, a sleep induction phase for inducing sleep and a wake-up induction phase for inducing wake-up.   4. The sound environment for bedding according to claim 3, wherein the parameter set of the sleep-inducing phase is set such that the distance of the sound image gradually moves away from the user's head as time elapses. Generator.   4. The sound environment generation for bedding according to claim 3, wherein the parameter set of the wake-up guidance phase is such that the direction of the sound image is set so that the sound image turns around the user's head over time. apparatus.   6. The parameter set according to claim 1, wherein the parameter set includes sound source data and a position of a sound image, and one type of sound source data and a plurality of types of sound image positions are allowed to be associated with each other. The sound environment generating device for bedding according to Item.   The parameter set specifies a video to be displayed on a video display device that can be viewed by a user on the bedding, and sets sound source data and a position of a sound image in association with the video. Item 6. The sound environment generation device for bedding according to item 6.   The bedding is a bed including a headboard incorporating the speaker, and the headboard includes a recess serving as a guide for the position of the user's head at the center in the left-right direction. The sound environment generating device for bedding according to any one of 7.   The sound environment generating device for bedding according to claim 8, wherein the speaker includes a horizontally-long diaphragm in which a dimension in a left-right direction is longer than a dimension in a vertical direction.   The bedding sound environment generating apparatus according to claim 8, wherein a plurality of the speakers are provided for each channel, and the speakers of each channel are arranged side by side in the left-right direction.   The sound environment generation apparatus for bedding according to claim 1, wherein the sound source data holding unit can acquire sound source data from the outside.   The at least one of a lighting fixture and an air conditioner is provided as an additional device together with the sound environment generating device for bedding according to any one of claims 1 to 11, and the additional device is interlocked with the operation of the sound environment generating device for bedding. A sleep environment system characterized by

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