Vibration transmission device for seat, vibration control device for seat, vibration transmission seat, and method for controlling vibration transmission device

Abstract

To give a seat occupant a feeling of effectiveness.SOLUTION: In a vibration transmission system for a seat including a vibration control device 300 for a seat and a vibration generating unit 200, signal converting means 312 acquires an original sound signal (audio content AC) from a sound source, and generates a first converted signal 321 and a second converted signal 322 by lowering the frequencies of an acoustic signal 301 of a first predetermined band and an acoustic signal 302 of a second predetermined band by one or two octaves respectively from the original sound signal. The vibration generating unit 200 (a first vibration generating unit 210 to a fifth vibration generating unit 250) outputs haptic content based on a drive signal 360 (361 to 365) including at least the converted signal to an occupant of the seat body 100.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a vibration transmission device for a seat that provides a tactile sensation and an auditory sensation to a seat occupant, a vibration control device for a seat, a vibration transmission seat, and a control method for a vibration transmission device.

[0002] Patent document 1 describes an acoustic device for seat audio that receives an audio signal such as music as an input, outputs the audio signal to a vibration generating means, and imparts tactile vibrations corresponding to the audio signal, thereby enhancing the sense of realism and entertainment value. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-072165 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, if the input sound signal (hereinafter referred to as the original sound) does not contain sound of an appropriate frequency for vibration, or contains only a small amount of it, it is expected that sufficient vibration that matches the original sound will not be obtained, and the sense of realism and entertainment value will not be enhanced.

[0005] The present disclosure relates generally to providing an effective sensation to a seated occupant, and more particularly to increasing the attention and relaxation effects.

[0006] A summary of certain embodiments disclosed herein is provided below. It should be understood that these aspects are presented only to provide the reader with an overview of these specific embodiments, and are not intended to limit the scope of this disclosure. In fact, the present disclosure may include combinations of the embodiments described below with various aspects not described below.

[0007] Therefore, the vibration transmission device for a seat, the vibration control device for a seat, the vibration transmission seat, and the control method for a vibration transmission device described in this specification employ the following means to solve the above problems: The gist of this embodiment includes acquiring an original sound signal from a sound source, generating a converted signal by lowering the frequency of an acoustic signal in a predetermined band from the original sound signal, and outputting the haptic content based on a drive signal including at least the converted signal to a person seated in the seat body.

[0008] The vibration transmission device for a seat (vibration control device for a seat) in the first embodiment described in this specification is a signal conversion means for acquiring an original sound signal from a sound source, and generating a converted signal (321, 322) by lowering the frequency of a predetermined band sound signal (hereinafter also referred to as a predetermined band sound signal) (301, 302) from the original sound signal; and a vibration generating unit (200) that outputs a haptic content based on a drive signal (360) that includes at least the converted signals (321, 322). This makes it possible to generate vibrations that match the original sound.

[0009] In addition, a vibration transmission device for a seat (a vibration control device for a seat) in a second embodiment that can be dependent on the first embodiment, The signal conversion means generates the converted signals (321, 322) by lowering the predetermined band acoustic signals (301, 302) by one or two octaves, thereby making it possible to generate vibrations that match the pitch of the original sound.

[0010] In addition, a vibration transmission device for a seat (a vibration control device for a seat) in a third embodiment that can be dependent on the first or second embodiment is a synthesis means (313) for generating a first drive signal by synthesizing the predetermined band acoustic signal (301, 302) and the converted signal (321, 322), The vibration generating section (200) outputs the haptic content based on the first drive signal.

[0011] Also, a synthesis means (313) for generating a second driving signal by synthesizing the original sound signal and the converted signal (321, 322) in a fourth embodiment that can be dependent on the first to third embodiments, The vibration generating section (200) outputs the haptic content based on the second drive signal.

[0012] The vibration transmission sheet in the sixth embodiment described in the present specification is A seat body (100), a signal conversion means (312) for acquiring an original sound signal from a sound source, and generating converted signals (321, 322) by lowering the frequency of a predetermined band of sound signals (hereinafter also referred to as a predetermined band sound signal) (301, 302) from the original sound signal; The seat includes a vibration generating unit (200) that outputs haptic content based on a drive signal (360) including at least the conversion signal (321) to an occupant of the seat body.

[0013] A method for controlling a vibration transmission device in a seventh embodiment described in this specification includes: A method for controlling a vibration transmission device that outputs haptic content to a seated person, comprising: Acquiring an original sound signal from a sound source, and generating converted signals (321, 322) by lowering the frequency of a predetermined band of sound signals (hereinafter also referred to as a predetermined band sound signal) (301, 302) from the original sound signal; and outputting the haptic content to an occupant of the seat body based on a drive signal (360) including at least the conversion signal (321, 322). [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 shows a vibration transmission device for a seat including a vibration generating unit according to one embodiment. [Diagram 2] FIG. 2 is a block diagram of a vibration transmission system for a seat including a vibration control device for a seat and a vibration generating unit according to one embodiment. [Figure 3A]FIG. 3A is a flowchart illustrating a process for vibrating a vibration generating unit according to one embodiment. [Figure 3B] FIG. 3B is a flowchart illustrating a process for vibrating the vibration generating unit according to one embodiment. [Figure 3C] FIG. 3C is a flowchart illustrating a process for vibrating a vibration generating unit according to one embodiment. [Figure 3D] FIG. 3D is a flowchart illustrating a process for vibrating a vibration generating unit according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] 1 to 3D, a description of the configuration and operation of an exemplary vibration transmission device for a seat is provided below. The teachings of the embodiments herein can be readily understood by considering the following detailed description in conjunction with the accompanying drawings. Reference will now be made in detail to several embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. It should be noted that, wherever practicable, similar or similar reference numbers may be used in the figures and may indicate similar or similar functionality. The figures depict embodiments of the present disclosure for illustrative purposes only. Those skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods described herein may be used without departing from the principles or advantages of the disclosure set forth herein.

[0016] One or more embodiments described herein are intended to address many of the shortcomings in delivering high quality haptic experiences and sounds to human users while they are seated in an automobile, a theater or other venue, a home or other location.

[0017] One or more embodiments described herein may be applicable to, for example, motor vehicles, such as cars, trucks, buses, or other mobile vehicles, such as trains, planes, ships, etc.

[0018] In the seat vibration transmission device according to one embodiment of the present disclosure, when a user needs to be alerted, for example, when there is an obstacle (e.g., another vehicle blocking the path) or another area requiring attention (e.g., an intersection requiring stopping), the vibration generation unit on the seat side near the obstacle or other area requiring attention may be activated. Also, the seat vibration transmission device according to one embodiment of the present disclosure may notify the user when passing a well-known landmark (or a landmark that may interest the user) or when the user is within a predetermined distance or time from the destination.

[0019] One or more embodiments described herein present an apparatus consisting of one or more vibration generators, sensors, and control systems that provides one or more human users with a variety of haptic and / or acoustic experiences, such as enhanced music listening and feeling experiences, more intuitive user interface alertness, massage and relaxation sensations, gaming experiences, AR and VR experiences, as well as simulations, such as driving simulations, and other sonic and haptic effects, through one or more structures designed to respond to the human's current state, such as a seating arrangement.

[0020] 1 illustrates a seat vibration transmission device including a vibration generating unit according to one embodiment. The seat vibration transmission device 400 is attached to a seat (seat body) 100 for a vehicle (e.g., a car, a train, an airplane, a boat). In other embodiments, the seat 100 may be (but is not limited to) a seat for a game or a theater seat.

[0021] The seat 100 includes a seat back 110 for supporting the user's back, a seat bottom 120 for supporting the user's buttocks, and a headrest 130 for supporting the back of the user's head.

[0022] The seat back (backrest portion) 110 includes six vibration generating units 200 arranged in three rows in the vertical direction, with two units arranged on the left and right sides as one set. The vibration generating unit 200 arranged at the top of the seat back 110 is referred to as a first vibration generating unit 210, the vibration generating unit 200 arranged at the bottom is referred to as a second vibration generating unit 220, and the vibration generating unit 200 arranged between the first vibration generating unit 210 and the second vibration generating unit 220 is referred to as a third vibration generating unit 230.

[0023] The first to third vibration generating units 210, 220, and 230 are located along a vertical centerline 150 of the seat back 110. The vertical centerline 150 does not physically exist within the seat, but is an imaginary central axis of the seat back 110 that separates the left and right halves of the seat back 110 from each other.

[0024] The seat bottom 120 includes four vibration generating units 200 arranged in two rows in the front-rear direction, with each pair consisting of two vibration generating units arranged on the left and right sides. The vibration generating unit 200 arranged at the rearmost position in the seat bottom 120 is referred to as a fourth vibration generating unit 240, and the vibration generating unit 200 arranged at the frontmost position is referred to as a fifth vibration generating unit 250.

[0025] In the seat back 110, six of the vibration generating units 200, 210 (two RL), 220 (two RL), and 230 (two RL), generate vibrations to provide tactile directional attention or tactile directional feedback to the user. The right vibration generating unit 200R (210R, 220R, 230R) is located on the right side of the seat back 110 and provides tactile directional attention or tactile directional feedback to the right side of the user. The left vibration generating unit 200L (210L, 220L, 230L) is located on the left side of the seat back 110 and provides tactile directional attention or tactile directional feedback to the left side of the user. Depending on the location of the vibration generating units 200R and 200L on either side of the seat back 110, the vibrations generated by the vibration generating units 200R and 200L can be used to provide a tactile directional alert to the user (e.g., alerting the user to look left or right while driving) or to provide tactile directional feedback to the user (e.g., indicating the presence of a large creature to the left or right side of a screen for entertainment purposes).

[0026] In some embodiments, the first vibration generating section 210 is closer to the upper end of the seat back 110 than the vibration generating sections 220 and 230. The second vibration generating section 220 is closer to the lower end of the seat back 110 than the vibration generating sections 210 and 230. The third vibration generating section 230 is between the vibration generating section 210 and the second vibration generating section 220.

[0027] In the seat bottom 120, four of the vibration generating units 200, 240 (two in RL), and 250 (two in RL) generate vibrations to provide a tactile directional alert or tactile directional feedback to the user. The right vibration generating unit 200R (240R, 250R) is located on the right side of the seat bottom 120 and provides a tactile directional alert or tactile directional feedback to the right side of the user. The left vibration generating unit 200L (240L, 250L) is located on the left side of the seat bottom 120 and provides a tactile directional alert or tactile directional feedback to the left side of the user.

[0028] In some embodiments, the fourth vibration generating section 240 is closer to the rear end of the seat bottom 120 than the fifth vibration generating section 250. The fifth vibration generating section 250 is closer to the front end of the seat bottom 120 than the fourth vibration generating section 240.

[0029] The vibration generating unit 200 is, for example, a voice coil motor, and transmits vibrations to the human body (skin, muscles, bones) by generating vibrations according to a haptic vibration signal described later, and receptors in the human body detect subtle changes in force and / or pressure caused by the vibrations from the vibration generating unit 200. For example, when one or more vibration generating units 200 are placed in contact with the buttocks of a user, the sensation of changing pressure and force can be transmitted. The vibration generating unit 200 provides the seated person with haptic content (predetermined vibration pattern) by the haptic vibration signal, with the effect of enhancing the bodily sensation of sound, the effect of calling attention to attention, and the relaxing effect of massaging.

[0030] Moreover, the vibration generating unit 200 generates sound according to an audio vibration signal, which will be described later, to transmit the sound to the human body (skin, muscles, bones) and hearing, and receptors in the human body detect subtle changes in force and / or pressure caused by the sound from the vibration generating unit 200, and the human hearing detects the sound caused by the sound from the vibration generating unit 200. For example, when one or more vibration generating units 200 are placed in contact with the back of a user, sound can be transmitted. The vibration generating unit 200 provides the seated person with an effect of enhancing the bodily sensation of sound, an attention-calling effect of calling attention, and a relaxing effect of massaging, by using audio content (messages and music) generated by the audio vibration signal.

[0031] The physical arrangement of the vibration generating units can be optimized for their intended purpose, and the following non-limiting examples are given. The vibration generating units in the "I-shaped arrangement" form a line including at least two vibration generating units, and in one example, three or more vibration generating units forming a line are arranged at equal distances from each other. This is described as a "fixed I-shaped arrangement". A further variation of the "I-shaped arrangement" is when three or more vibration generating units forming a line are arranged at different distances from each other. This is described as a "modified I-shaped arrangement". In FIG. 1, the vibration generating units are arranged on the right side of the seat back 110 in the vertical direction, with three vibration generating units 210R, 220R, and 230R arranged on a line at equal distances (the vibration generating units in FIG. 1 are arranged in a fixed I-shaped arrangement). It can be said that the three vibration generating units 210L, 220L, and 230L on the left side of the seat back 110 in the vertical direction are also arranged in a fixed I-shaped arrangement.

[0032] In some embodiments, the physical arrangement of the vibration generating unit may be a T-shaped arrangement, an inverted T-shaped arrangement obtained by inverting the T-shaped arrangement in the vertical (or front-to-back) direction, an H-shaped arrangement, an X-shaped arrangement, a diamond-shaped arrangement, a radial arrangement, a concentric circular arrangement, an elliptical arrangement, a matrix arrangement, or a honeycomb arrangement.

[0033] 2 is a block diagram of a seat vibration transmission device 400 including a seat vibration control device 300 and a vibration generating unit 200 according to one embodiment. The seat vibration control device 300 includes a haptic vibration signal generating circuit 310, a digital-to-audio converter (DAC) 330 (331 to 335), and an amplifier circuit 350 (351 to 355). The seat 100 includes the vibration generating unit 200 (210 to 250). The seat 100 also includes one or more sensors 390. The sensor 390 can be disposed in the seat back 110 or the seat bottom 120.

[0034] The vibration control device for a seat 300 receives an audio content AC as input, and generates a driving signal 360 (361 to 365) that is converted into a movement by the vibration generating unit 200. The driving signal 360 includes at least a conversion signal 321, which will be described later.

[0035] The haptic vibration signal generating circuit 310 can be configured in various forms. For example, the haptic vibration signal generating circuit 310 is configured as a sound source circuit in a software type method such as "DSP (Digital Signal Processor) + microprogram" or "CPU + software program". In this embodiment, the filter means 311, the signal conversion means 312, and the synthesis means 313 shown in FIG. 2 are configured by a processor and a program stored in a recording medium and executed by the processor. However, the filter means 311, the signal conversion means 312, the synthesis means 313, etc. may be configured using dedicated hardware. That is, the filter means 311 may be configured, for example, by a band pass filter circuit (an example of a hardware means for selecting a predetermined frequency). Also, the signal conversion means 312 may be configured, for example, by an octaver, a pitch shifter, a frequency shifter, or a ring modulator (an example of a hardware means for selecting a predetermined frequency). Furthermore, the synthesis means 313 may be configured, for example, with an octaver, a pitch shifter, a frequency shifter, or a ring modulator (an example of a hardware means for selecting a predetermined frequency).

[0036] The filter means 311 extracts a predetermined band acoustic signal 301 from the audio content (original sound signal) AC and outputs it to the signal conversion means 312. The filter means 311 extracts a predetermined frequency band that becomes a low frequency range (for example, 40 Hz to 120 Hz) by octave conversion by the signal conversion means 312. That is, when the signal conversion means 312 lowers the frequency by two octaves, the filter means 311 extracts a first predetermined band acoustic signal 301 of 160 Hz to 480 Hz (an example of a predetermined frequency band), and when the signal conversion means 312 lowers the frequency by one octave, the filter means 311 extracts a second predetermined band acoustic signal 302 of 80 Hz to 240 Hz (an example of a predetermined frequency band).

[0037] The signal conversion means 312 lowers the frequency of the first predetermined band acoustic signal 301 (second predetermined band acoustic signal 302) extracted from the filter means 311, and outputs it as a first converted signal 321 (second converted signal 322). The signal conversion means 312 performs, for example, octave conversion to lower the frequency of the first predetermined band acoustic signal 301 extracted by the filter means 311 by two octaves. Note that the signal conversion means 312 does not have to perform octave conversion since it is only necessary to lower the frequency.

[0038] The synthesis means 313 synthesizes the first converted signal 321 and / or the second converted signal 322 output by the signal conversion means 312 with the audio content AC, which is the original sound, and the first predetermined band acoustic signal 301 and / or the second predetermined band acoustic signal 302, and outputs the result as the second converted signal 322. Note that the synthesis means 313 may be omitted.

[0039] The haptic vibration signal generating circuit 310 receives the audio content AC and outputs the first converted signal 321 (second converted signal 322) to the DAC 340 (341 to 345). The DAC 340 (341 to 345) converts the digital signal to an analog signal, which is then amplified by the amplifier circuit 350 (351 to 355) to generate the driving signal 360 (361 to 365).

[0040] The haptic vibration signal generating circuit 310 may also synthesize the first converted signal 321, which is a digital signal, with the sound content AC, which is the original sound, and supply the resulting digital signal to the DAC 340 (341 to 345). That is, the haptic vibration signal generating circuit 310 may have a function of generating a synthesis mode in which the first converted signal 321 and / or the second converted signal 322 and the sound content AC are synthesized at the digital signal stage. The haptic vibration signal generating circuit 310 may also have a function of adding (synthesizing) the first converted signal 321 and / or the second converted signal 322 and the sound content AC after weighting either of them based on the control of a control unit (such as a microprocessor, not shown), rather than simply adding the first converted signal 321 and / or the second converted signal 322 and the sound content AC.

[0041] Also, the haptic vibration signal generating circuit 310 may output a different digital signal to each DAC 340 (341 to 345) so that the multiple vibration generating units 200 (210 to 250) operate individually. That is, the haptic vibration signal generating circuit 310 may generate a digital signal generated only from the converted signal 321, a digital signal obtained by simply adding the converted signal 321 and the audio content AC, and a digital signal obtained by adding the converted signal 321 and the audio content AC in a desired ratio, and output the generated signals to the DACs 341 to 345 individually.

[0042] In some embodiments, the sensor 390 includes a pressure sensor that senses pressure applied to the seat by a human user. The pressure sensor may be located in the seat back 110 or the seat bottom 120. The pressure sensor outputs a pressure sensing signal indicative of the amount of pressure detected. The haptic vibration signal generating circuit 310 may take one or more actions in response to the pressure detected by the sensor 390.

[0043] In some embodiments, the haptic vibration signal generating circuit 310 can compare the pressure with a pressure threshold. If the pressure threshold is exceeded, this means that a person is sitting in the seat and is in a state where it is easy to transmit vibrations. Therefore, some (or all) of the vibration generating units 200 that are in a state where it is easy to transmit vibrations can be operated in a normal manner to provide audio content and haptic content to the user. On the other hand, if the pressure threshold is not exceeded, this means that a person is not sitting normally in the seat and is in a state where it is difficult to transmit vibrations. As a result, the drive signal 360 can be controlled so as not to operate some (or all) of the vibration generating units 200 that are in a state where it is difficult to transmit vibrations.

[0044] In some embodiments, the seat vibration controller 300 may include one or more computing devices including, for example, circuits, a processor, volatile and non-volatile memory, sensors, communication systems, and instructions and programs executed by the processor. In one embodiment, the seat vibration controller 300 includes a non-transitory computer readable medium (e.g., memory, etc.) that stores executable instructions. The commands are executed by the at least one processor to perform one or more of the operations described herein.

[0045] 3A to 3D are flowcharts showing methods S110, S130, S150, and S170 for executing a process of vibrating the vibration generating unit based on input information. The methods S110, S130, S150, and S170 are executed in the vibration generating unit 200 and the seat vibration control device 300 that controls the vibration generating unit 200.

[0046] (Method S110) First, in S112 of Fig. 3A, the seat vibration control device 300 (touch vibration signal generating circuit 310) inputs the audio content AC. The filter means 311 extracts the first predetermined band acoustic signal 301 in a predetermined frequency band (first frequency band) and / or the second predetermined band acoustic signal 302 in a predetermined frequency band (second frequency band) from the audio content AC, and the signal conversion means 312 lowers the first predetermined band acoustic signal 301 by two octaves and / or the second predetermined band acoustic signal 302 by one octave (S114). The seat vibration control device 300 drives the vibration generating unit 200 with the drive signal 360 consisting of the first predetermined band acoustic signal (an example of a converted signal) 301 whose frequency has been lowered by the signal conversion means 312 (S116).

[0047] (Method S130) First, in S132 of FIG. 3B, the seat vibration control device 300 (touch vibration signal generating circuit 310) inputs the sound content AC. The filter means 311 extracts the first predetermined band sound signal 301 of a predetermined frequency band (first frequency band) from the sound content AC, and the signal conversion means 312 generates a converted signal 321 by lowering the first predetermined band sound signal 301 by one or two octaves (S134). In step S136, the synthesis means 313 generates a drive signal 360 by synthesizing the converted signal 321 generated in S134 and the sound content AC, which is the original sound. The seat vibration control device 300 drives the vibration generating unit 200 with the drive signal 360 (second drive signal 362) consisting of the drive signal 360 synthesized in step S136 (S138).

[0048] (Method S150) First, in S152 of Fig. 3C, the seat vibration control device 300 (tactile vibration signal generating circuit 310) inputs the audio content AC. The filter means 311 extracts a first predetermined band acoustic signal 301 in a predetermined frequency band (first frequency band) from the audio content AC, and the signal conversion means 312 generates a converted signal 321 by lowering the first predetermined band acoustic signal 301 by two octaves (S154). Furthermore, the filter means 311 extracts a second predetermined band acoustic signal 302 in a second frequency band lower than the first frequency band from the audio content AC, and the signal conversion means 312 generates a second converted signal 322 by lowering the first predetermined band acoustic signal 301 by one octave (S156). In step S158, the synthesis means 313 generates a second synthesis signal 337 by synthesizing the converted signal 321 generated in S154 and the second converted signal 322 generated in S156. The seat vibration control device 300 drives the vibration generating unit 200 with a drive signal 360 (second drive signal 362) consisting of the second synthesis signal 337 synthesized in step S158 (S160).

[0049] (Method S170) First, in S172 of FIG. 3D, the seat vibration control device 300 (tactile vibration signal generating circuit 310) inputs the audio content AC. The filter means 311 extracts the first predetermined band acoustic signal 301 in a predetermined frequency band (first frequency band) from the audio content AC, and the signal conversion means 312 generates a converted signal 321 by lowering the first predetermined band acoustic signal 301 by one or two octaves (S174). Furthermore, the filter means 311 extracts the second predetermined band acoustic signal 302 in a second frequency band lower than the first frequency band from the audio content AC (S176). In step S178, the synthesis means 313 generates a third synthesis signal 338 by synthesizing the converted signal 321 generated in S174 and the second predetermined band acoustic signal 302 extracted in S176. The seat vibration control device 300 drives the vibration generating unit 200 with the drive signal 360 formed from the third composite signal 338 synthesized in step S178 (S180).

[0050] In the above embodiment, the synthesis means 330 generates a digital synthesis signal 321 (322, 323) by synthesizing the digital conversion signal 321 (322) and the digital audio content AC (the first predetermined band acoustic signal 301, the second predetermined band acoustic signal 302), and then converts it into an analog signal. However, for example, an adder circuit or the like may be used to generate an analog synthesis signal 321 (322, 323) by synthesizing the analog conversion signal 321 (322) and the analog audio content AC (the first predetermined band acoustic signal 301, the second predetermined band acoustic signal 302).

[0051] In some embodiments, one or more control systems including at least one computer and / or logic processor can use such set of information to generate one or more sets of control signals that activate the vibration generating unit.

[0052] After reading this disclosure, one skilled in the art may recognize additional alternative designs for a system having a vibration generating unit that provides tactile sensations. Thus, while specific embodiments and applications of the present disclosure have been illustrated and described, it should be understood that the disclosure is not limited to the precise structures and components disclosed herein. Various modifications, changes and variations that may be apparent to those skilled in the art may be made in the arrangement, operation and details of the methods and apparatus disclosed herein without departing from the spirit and scope of the present disclosure as defined in the appended claims. [Explanation of symbols]

[0053] 100: Seats 110: Seat back 120: Seat bottom 130: Headrest 150: Vertical center line 200: Vibration generating unit 200L: Left side vibration generating part 200R: Right side vibration generating part 210: Vibration generating unit 210: First vibration generating unit 220: Second vibration generating unit 230: Third vibration generating section 240: Fourth vibration generating section 250: 5th vibration generating part 300: Seat vibration control device 301: First predetermined band acoustic signal 302: Second predetermined band acoustic signal 310: Antenna vibration signal generation circuit 311: Filtering means 312: Signal conversion means 313:Synthesis means 321: First conversion signal 322: Second conversion signal 330:Synthesis means 337: Second composite signal 338: Third composite signal 350: Amplifier circuit 360: Drive signal 362: Second drive signal 390: Sensor 400: Seat vibration transmission device AC: Audio content

Claims

1. A vibration transmission device (400) for a seat, a signal conversion means for acquiring an original sound signal from a sound source, and generating a converted signal (321, 322) by lowering the frequency of a predetermined band acoustic signal (hereinafter also referred to as a predetermined band acoustic signal) (301, 302) from the original sound signal; a vibration generating unit (200) that outputs haptic content based on a drive signal (360) including at least the conversion signal (321, 322), A vibration transmission device for a seat (400).

2. The signal conversion means generates the converted signal (321, 322) by lowering the predetermined band acoustic signal (301, 302) by one or two octaves. The vibration transmission device (400) for a seat according to claim 1.

3. a synthesis means (313) for generating a first drive signal by synthesizing the predetermined band acoustic signal (301, 302) and the converted signal (321, 322); The vibration generating unit (200) outputs the haptic content based on the first drive signal. The vibration transmission device (400) for a seat according to claim 1.

4. Further comprising a synthesis means (313) for generating a second drive signal by synthesizing the original sound signal and the converted signal (321, 322), The vibration generating unit (200) outputs the haptic content based on the second drive signal. The vibration transmission device (400) for a seat according to claim 1.

5. A vibration control device (300) for a seat that controls a vibration transmission device that outputs haptic content to a seat occupant, a signal conversion means for acquiring an original sound signal from a sound source, and generating a converted signal (321, 322) by lowering the frequency of a predetermined band acoustic signal (hereinafter also referred to as a predetermined band acoustic signal) (301, 302) from the original sound signal; a vibration generating unit (200) that outputs haptic content based on a drive signal (360) including at least the conversion signal (321, 322), Vibration control device for a seat (300).

6. The signal conversion means generates the converted signal (321, 322) by lowering the predetermined band acoustic signal (301, 302) by one or two octaves. The vibration control device (300) for a seat according to claim 5.

7. a synthesis means (313) for generating a first drive signal by synthesizing the predetermined band acoustic signal (301, 302) and the converted signal (321, 322); The vibration generating unit (200) outputs the haptic content based on the first drive signal. The vibration control device (300) for a seat according to claim 5.

8. Further comprising a synthesis means (313) for generating a second drive signal by synthesizing the original sound signal and the converted signal (321, 322), The vibration generating unit (200) outputs the haptic content based on the second drive signal. The vibration control device (300) for a seat according to claim 5.

9. A seat body (100); a signal conversion means (312) for acquiring an original sound signal from a sound source, and generating converted signals (321, 322) by lowering the frequency of a predetermined band of sound signals (hereinafter also referred to as a predetermined band sound signal) (301, 302) from the original sound signal; a vibration generating unit (200) that outputs haptic content based on a drive signal (360) including at least the conversion signal (321) to a seat occupant of the seat body, A vibration transmission sheet characterized by:

10. A method for controlling a vibration transmission device that outputs haptic content to a seated person, comprising: Acquiring an original sound signal from a sound source, and generating a converted signal (321, 322) by lowering the frequency of a predetermined band sound signal (hereinafter also referred to as a predetermined band sound signal) (301, 302) from the original sound signal; outputting the haptic content based on a drive signal (360) including at least the conversion signal (321, 322) to an occupant of the seat body; A method for controlling a vibration transmission device comprising:

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