JP2017088003A - Vehicle acoustic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate a desired synthetic sound following an actual state, when a door is opened or closed.SOLUTION: A vehicle acoustic device is a device for outputting a sound from speakers 12, 13, 21, 31 provided on a vehicle 10 for synthesizing the sound to a mechanism sound which is generated following opening and closing of a door 20(30) when the door 20(30) of the vehicle 10 is opened and closed, and comprises an electronic control device for driving the speakers 12, 13, 21, 31 so that an output state of the sound output from the speakers 12, 13, 21, 31 is varied following a vehicle state in opening/closing of the door 20(30).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle acoustic device that outputs a sound from a speaker provided in a vehicle so as to be combined with a mechanism sound generated when the door is opened and closed when the door of the vehicle is opened and closed.

  Patent Document 1 discloses a device that stores door sound data in a storage unit in advance and outputs the door sound from a vehicle speaker when it is detected that the vehicle door is closed. .

JP 2011-207251 A

  By the way, the mechanism sound generated when the door is closed differs depending on, for example, the opening / closing speed of the door and the outside air temperature. However, in the case of the device described in Patent Document 1, the door sound stored in advance in the storage means is uniformly output from the speaker regardless of the opening / closing speed of the door, so that the synthesized sound is not realistic. It becomes.

  An object of the present invention is to provide an audio device for a vehicle that can generate a desired synthesized sound that matches reality when a door is opened and closed.

  In order to achieve the above object, an audio device for a vehicle is an apparatus for outputting sound from a speaker provided in the vehicle so as to be synthesized with a mechanism sound generated when the door of the vehicle is opened and closed. And a controller that drives the speaker to vary the output mode of the sound output from the speaker in accordance with the vehicle state when the door is opened and closed.

  According to this configuration, when the speaker is driven by the control unit, the output mode of the sound output from the speaker is varied according to the vehicle state when the door is opened and closed. For this reason, the sound reflecting the vehicle state at that time is synthesized with the mechanism sound generated when the door is opened and closed. Therefore, a realistic synthesized sound can be generated.

Examples of sound output modes include sound pressure level and frequency characteristics of reverberation time.
It is preferable that the control unit drives the speaker so as to change an output mode of sound output from the speaker according to a state of the door of the vehicle when the door is opened and closed.

  The mechanism sound that accompanies the opening and closing of the door varies depending on the state of the door of the vehicle. Here, examples of the state of the vehicle door include a door opening / closing speed, a door opening degree, a door window opening degree, and the like. The door state includes at least one of the door state and a door state different from the door state.

  According to the above configuration, when the speaker is driven by the control unit, the output mode of the sound output from the speaker is varied according to the state of the vehicle door. For this reason, the sound reflecting the state of the door at that time is synthesized with the mechanism sound generated when the door is opened and closed.

It is preferable that the control unit drives the speaker so as to vary an output mode of sound output from the speaker according to an opening / closing speed of the door when the door is opened / closed.
The mechanism sound generated when the door is opened and closed varies depending on the opening and closing speed of the door. For example, when the door opening / closing speed is high, the sound pressure level of the mechanism sound is increased and the reverberation time of the mechanism sound is shorter than when the door opening / closing speed is low.

  According to the above configuration, when the speaker is driven by the control unit, the output mode of the sound output from the speaker is varied according to the opening / closing speed of the door. For this reason, the sound reflecting the opening and closing speed of the door at that time is synthesized with the mechanism sound generated when the door is opened and closed.

It is preferable that the control unit drives the speaker so as to vary an output mode of sound output from the speaker in accordance with an opening degree of the door when the door starts to close.
The mechanism sound generated when closing the door varies depending on the opening of the door when the door starts to close. For example, when the opening degree of the door is large, the sound pressure level of the mechanism sound becomes larger and the reverberation time of the mechanism sound becomes shorter than when the door opening degree is small.

  According to the said structure, when a speaker is driven by a control part, the output mode of the sound output from a speaker is varied according to the opening degree of the said door at the time of starting to close the said door. For this reason, the sound reflecting the opening degree of the door at the beginning of the closing is synthesized with the mechanism sound generated when the door is opened and closed.

  The control unit may change the output mode of the sound output from the speaker according to at least one of an opening / closing state of the vehicle window when the door is opened / closed and an opening / closing state of a door different from the door. It is preferable to drive the speaker.

The mechanism sound generated when the door is opened and closed varies depending on the opening / closing state of the vehicle window and the opening / closing state of other doors, in other words, the degree of sealing in the vehicle interior.
According to the above configuration, when the speaker is driven by the control unit, the output mode of the sound output from the speaker is varied according to at least one of the open / close state of the vehicle window and the open / close state of the other doors. For this reason, the sound reflecting the opening / closing state of the window of the vehicle and the opening / closing state of other doors at that time is synthesized with the mechanism sound generated when the door is opened / closed.

It is preferable that the control unit drives the speaker so as to vary an output mode of sound output from the speaker according to a total travel distance of the vehicle when the door is opened and closed.
The mechanism sound generated when the door is opened and closed varies depending on the rigidity of the vehicle including the door and the hardness of the weather strip. Further, the longer the total travel distance of the vehicle, the lower the rigidity of the vehicle, and the hardness of the weather strip changes due to rubber deterioration.

  According to the above configuration, when the speaker is driven by the control unit, the output mode of the sound output from the speaker is varied according to the total travel distance of the vehicle. For this reason, the sound reflecting the total travel distance of the vehicle is synthesized with the mechanism sound generated when the door is opened and closed.

  It is preferable that the control unit drives the speaker so as to change an output mode of sound output from the speaker according to at least one of an outside air temperature and humidity when the door is opened and closed.

The mechanism sound that occurs when the door is opened and closed varies depending on the outside air temperature and humidity.
According to the above configuration, when the speaker is driven by the control unit, the output mode of the sound output from the speaker is varied according to one of the outside air temperature and humidity. For this reason, the sound in which the outside air temperature and humidity at that time are reflected is synthesized with the mechanism sound generated when the door is opened and closed.

  ADVANTAGE OF THE INVENTION According to this invention, when a door is opened and closed, the desired synthetic | combination sound according to reality can be produced.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows the whole vehicle with which an audio equipment is applied about 1st Embodiment of the audio equipment of a vehicle. The block diagram which shows the electric constitution of the audio equipment in the embodiment. The flowchart which shows the process sequence of the drive control of the speaker at the time of the door closing of the embodiment. The graph which shows the relationship between those frequencies and a sound pressure level about the mechanism sound and synthetic sound at the time of the door closing of the embodiment. The schematic diagram which shows the whole vehicle with which the audio equipment of 2nd Embodiment is applied. The block diagram which shows the electric constitution of the audio equipment in the embodiment. (A) Transition of the operation state of the handle switch, (b) Transition of the driving state of the door motor, (c) Transition of the door opening degree, and (d) Transition of the amplifier command signal at the time of opening the door of the embodiment. Timing chart. When the door of the embodiment is closed, (a) change in the operation state of the handle switch, (b) change in the drive state of the door motor, (c) change in the door opening degree, and (d) change in the amplifier command signal are also shown. Timing chart.

<First Embodiment>
The first embodiment will be described below with reference to FIGS.
As shown in FIG. 1, swing-type doors 20 and 30 that open and close the entrance are provided on both sides of the vehicle 10 in the vehicle width direction. The doors 20 and 30 are rotatably supported by hinges 18 and 19 that are fixed to the front edge of the entrance in the vehicle main body 11.

  Door speakers 21 and 31 are provided on the vehicle compartment side of the doors 20 and 30, respectively. The hinges 18 and 19 are provided with rotation angle sensors 43 and 44 for detecting the rotation angles of the doors 20 and 30, respectively.

The doors 20 and 30 are provided with window opening sensors 45 and 46 for detecting the opening degree of windows (not shown) of the doors 20 and 30.
The courtesy switches 16 and 17 for detecting whether or not the doors 20 and 30 are fully closed are provided at the rear edge portions of the vehicle entrance and exit, respectively.

Further, the vehicle 10 is provided with a temperature sensor 41 that detects an outside air temperature and a humidity sensor 42 that detects external humidity.
Rear speakers 12 and 13 are provided on both inner side walls of the vehicle body 11 behind the doors 20 and 30, respectively.

Next, the electrical configuration of the acoustic device of the vehicle 10 will be described.
As shown in FIG. 2, the vehicle 10 includes an electronic control device 50 that controls the sound in the passenger compartment.

  The electronic control unit 50 includes a central processing control unit (CPU), a read only memory (ROM) that stores various programs and maps in advance, a random access memory (RAM) that temporarily stores calculation results of the CPU, a timer counter, an input An interface, an output interface, etc. are provided.

  The electronic control device 50 receives detection signals from the courtesy switches 16 and 17, detection signals from the rotation angle sensors 43 and 44, detection signals from the window opening sensors 45 and 46, detection signals from the temperature sensor 41, and the humidity sensor 42. Is done.

  The electronic control device 50 outputs a command signal to the amplifiers 14, 15, 22, and 32 based on signals from the various sensors and switches described above, and drives the speakers 12, 13, 21, and 31 to generate sound. Is output.

  Next, with reference to FIG. 3, a processing procedure for driving control of the speakers 12, 13, 21, and 31 when the door 20 (30) is closed will be described. Note that the series of processing shown in FIG. 3 is repeatedly executed at predetermined intervals when the door 20 (30) is opened by the electronic control unit 50.

As shown in FIG. 3, in this series of processing, first, detection signals from various sensors and switches are read (step S1).
Next, it is determined whether or not the open door 20 (30) is being closed (step S2). Here, it is determined that the door 20 (30) is being closed based on the decrease in the opening θ of the door 20 (30) detected by the rotation angle sensor 43 (44).

  If a negative determination is made in step S2 ("NO"), it is determined that the execution conditions for driving control of the speakers 12, 13, 21, and 31 have not yet been established, and this series of processes is temporarily terminated.

  On the other hand, if an affirmative determination is made in step S2 (“YES”), then the opening degree θ of the door 20 (30) is larger than the first opening degree θ1 (> 0) and the second opening degree θ2 is set. It is determined whether or not it is within a predetermined range (θ1 <θ <θ2) smaller than (> θ1) (step S3). The opening degree θ of the door 20 (30) is derived based on detection signals from the courtesy switches 16 and 17 and detection signals from the rotation angle sensors 43 and 44. That is, from the rotation angle sensors 43 and 44 based on the detection signal of the rotation angle sensor 43 (44) when the detection signal indicating that the door 20 (30) is fully closed is output from the courtesy switches 16 and 17. The opening degree θ of the door 20 (30) is derived based on the detection signal.

If a negative determination is made in step S3 (“NO”), it is next determined whether or not the opening degree θ of the door 20 (30) is equal to or less than the first opening degree θ1 (step S5).
If a negative determination is made in step S5 (step S5: “NO”), the series of processes is temporarily ended, assuming that the opening θ of the door 20 (30) is equal to or greater than the second opening θ2.

  On the other hand, when an affirmative determination is made in step S3 ("YES"), next, the output mode of the sound output from the speakers 12, 13, 21, and 31 is set based on the following parameters relating to the vehicle state, respectively. (Step S4). Then, this series of processes is temporarily terminated. The closing speed of the door 20 (30) is obtained by calculating the time differential value dθ / dt of the detection signal of the rotation angle sensor 43 (44).

  Here, the parameters include, for example, the closing speed of the door 20 (30) during the closing operation, the open / close state of the windows of the door 20 (30) and the other door 30 (20), and other doors. 30 (20) open / closed state, outside air temperature, and humidity.

  Examples of the sound output mode include the sound pressure level and the frequency characteristics of the sound reverberation time. In the present embodiment, a plurality of maps in which the relationship between the frequency relating to the output sound, the sound pressure level, and the reverberation time are defined are stored in a read-only memory (ROM), and one map is selected from the plurality of maps. Is selected based on the above parameters. As a result, the sound output mode is varied according to the parameters. The relationship between the frequency related to the output sound, the sound pressure level, and the reverberation time is set through experiments and the like in consideration of the mechanism sound of the vehicle 10. Incidentally, the shape and size of the doors 20 and 30, the mass, the shape and size of the weatherstrip that seals between the doors 20 and 30 and the entrance / exit, and hardness contribute to the mechanism sound of the vehicle 10. .

  For example, when the right door 20 is closed, the sound of the highest sound pressure level is output from the right door speaker 21, while the sounds output from the right door speaker 21 are output from the other speakers 12, 13, and 31. A sound with a lower sound pressure level is output as an auxiliary.

  On the other hand, when an affirmative determination is made in step S5 ("YES"), it is determined that the door 20 (30) is immediately before being fully closed, and the amplifiers 14, 15, and 22 are output in the output mode set in step S4. , 32 are output as command signals. As a result, the speakers 12, 13, 21, and 31 are driven.

Next, the operation of this embodiment will be described.
When the speakers 12, 13, 21, and 31 are driven by the electronic control unit 50 via the amplifiers 14, 15, 22, and 32, the output mode of the sound output from the speakers 12, 13, 21, and 31 is changed to the door 20. It is variable according to the vehicle state at the time of opening and closing (30). For this reason, the sound in which the vehicle state at that time is reflected is synthesized with the mechanism sound generated when the door 20 (30) is opened and closed.

  For example, when the right door 20 is closed, a mechanism sound having characteristics as indicated by a solid line in FIG. 4 is generated at a predetermined position as the right door 20 is closed. At this time, the sound pressure level of the mechanical sound becomes maximum at the frequency f2 on the low frequency side (low sound side) and the frequency f5 on the high frequency side (high sound side), and becomes minimum at the frequency f4.

  By synthesizing the sound output from the speakers 12, 13, 21, and 31 with the mechanical sound having such characteristics, a synthesized sound having the characteristics shown by the broken line in FIG. At this time, the sound pressure level of the synthesized sound becomes maximum at the frequency f1 (<f2) on the low frequency side and the frequency f5 on the high frequency side, and becomes minimum at the frequency f3 (<f4).

In this way, the maximum value and the minimum value of the sound pressure level of the synthesized sound are changed with respect to the maximum value and the minimum value of the sound pressure level of the mechanical sound.
According to the vehicle acoustic apparatus according to the present embodiment described above, the following effects can be obtained.

  (1) When the door 20 (30) of the vehicle 10 is opened / closed, the vehicle acoustic device includes a speaker 12, which is provided in the vehicle 10 so as to be combined with a mechanical sound generated when the door 20 (30) is opened / closed. Sound is output from 13, 21, and 31. The acoustic device drives the speakers 12, 13, 21, and 31 to vary the output mode of the sound output from the speakers 12, 13, 21, and 31 according to the vehicle state when the door 20 (30) is opened and closed. An electronic control unit 50 is provided.

According to such a configuration, when the door 20 (30) is opened and closed, the desired synthesized sound that is realistic can be generated by performing the above-described operation.
(2) The electronic control unit 50 can change the output mode of the sound output from the speakers 12, 13, 21, and 31 according to the state of the doors 20 and 30 of the vehicle 10 when the door 20 (30) is opened and closed. The speakers 12, 13, 21, and 31 are driven in order to achieve this.

  The mechanism sound generated when the door 20 (30) is opened and closed varies depending on the state of the doors 20 and 30 of the vehicle 10. Here, the states of the doors 20 and 30 of the vehicle 10 include the opening / closing speed of the door 20 (30), the opening degree of the door 20 (30), the opening degree of the window of the door 20 (30), and the like. The state of the door 20 (30) includes both the state of the door 20 (30) and the state of the door 30 (20) different from the door 20 (30).

  According to the above configuration, when the speakers 12, 13, 21, 31 are driven by the electronic control device 50, the output mode of the sound output from the speakers 12, 13, 21, 31 is changed to the doors 20, 30 of the vehicle 10. It can be changed according to the state. For this reason, the sound reflecting the state of the doors 20 and 30 at that time is synthesized with the mechanism sound generated when the door 20 (30) is opened and closed.

  (3) The electronic control unit 50 can change the output mode of the sound output from the speakers 12, 13, 21, 31 according to the opening / closing speed of the door 20 (30) when the door 20 (30) is opened / closed. The speakers 12, 13, 21, and 31 are driven in order to achieve this.

  The mechanism sound generated when the door 20 (30) is opened and closed varies depending on the opening and closing speed of the door 20 (30). For example, when the opening / closing speed of the door 20 (30) is large, the sound pressure level of the mechanism sound is increased and the reverberation time of the mechanism sound is shortened as compared to when the door 20 (30) is small.

  According to the above configuration, when the speakers 12, 13, 21, and 31 are driven by the electronic control unit 50, the output mode of the sound output from the speakers 12, 13, 21, and 31 is the same as that of the door 20 (30). It is variable according to the opening / closing speed. For this reason, the sound reflecting the opening and closing speed of the door 20 (30) at that time is synthesized with the mechanism sound generated when the door 20 (30) is opened and closed.

  (4) The electronic control device 50 opens and closes the window of the vehicle 10 when the door 20 (30) is opened and closed, and the door 20 (30) according to the output mode of the sound output from the speakers 12, 13, 21, and 31. The speakers 12, 13, 21, and 31 are driven so as to vary in accordance with both the open / closed state of the door 30 (20) different from).

The mechanism sound generated when the door 20 (30) is opened / closed differs depending on the opened / closed state of the window of the vehicle 10 and the opened / closed state of the other door 30 (20), in other words, the degree of sealing in the vehicle interior.
According to the above configuration, when the speakers 12, 13, 21, 31 are driven by the electronic control device 50, the output mode of the sound output from the speakers 12, 13, 21, 31 is the open / closed state of the window of the vehicle 10. And it is variable according to both the open / closed states of the other doors 30 (20). For this reason, the sound reflecting the opening / closing state of the window of the vehicle 10 and the opening / closing state of the other door 30 (20) at that time is synthesized with the mechanism sound generated when the door 20 (30) is opened and closed.

  (5) The electronic control unit 50 should change the output mode of the sound output from the speakers 12, 13, 21, and 31 according to at least one of the outside air temperature and humidity when the door 20 (30) is opened and closed. The speaker is driven.

The mechanism sound that is generated when the door 20 (30) is opened and closed varies depending on the outside air temperature and humidity.
According to the above configuration, when the speakers 12, 13, 21, and 31 are driven by the electronic control device 50, the output mode of the sound output from the speakers 12, 13, 21, and 31 is changed to both the outside air temperature and the humidity. It can be varied accordingly. For this reason, the sound in which the outside air temperature and humidity at that time are reflected is synthesized with the mechanism sound generated when the door 20 (30) is opened and closed.

Second Embodiment
Hereinafter, with reference to FIGS. 5 to 8, the second embodiment will be described focusing on differences from the first embodiment. In addition, the same code | symbol is attached | subjected about the structure same as 1st Embodiment, and the overlapping description is abbreviate | omitted by attaching | subjecting the code | symbol "1 **" which added "100" about the structure corresponding to 1st Embodiment. To do.

  As shown in FIG. 5, sliding doors 120 and 130 that open and close the entrance are provided on both sides of the vehicle 110 in the vehicle width direction. The doors 120 and 130 are respectively supported by rails (not shown) provided on both sides of the vehicle main body 111 so as to be slidable along the vehicle front-rear direction. Further, door motors 123 and 133 for driving the doors 120 and 130 are provided on both sides of the vehicle main body 111, respectively.

  The doors 120 and 130 are respectively provided with handle switches 126 and 136 for detecting whether or not the inside handles 124 and 134 and the outside handles 125 and 135 are operated by the user. When the inside handles 124, 134 or the outside handles 125, 135 are operated with the doors 120, 130 closed, the door motor moves the doors 120, 130 in the opening direction (right direction in the figure). 123 and 133 are driven, respectively. Further, when the inside handles 124, 134 or the outside handles 125, 135 are operated with the doors 120, 130 open, the door motor is moved so that the doors 120, 130 move in the closing direction (left direction in the figure). 123 and 133 are driven, respectively.

  The vehicle 110 is provided with door opening sensors 147 and 148 that detect the positions of the doors 120 and 130, that is, the opening degrees of the doors 120 and 130. Note that the door opening sensors 147 and 148 are configured by a Hall IC or the like.

The vehicle 110 is provided with an odometer 49 that measures the total travel distance of the vehicle.
Note that a rear speaker is not provided in the vehicle main body 111 of the present embodiment.
As shown in FIG. 6, the electronic control unit 150 includes detection signals from the handle switches 126 and 136, detection signals from the courtesy switches 116 and 117, detection signals from the door opening sensors 147 and 148, and window opening sensors 145 and 146. Detection signal, temperature sensor 41, humidity sensor 42, and detection signal of odometer 49 are input.

  Based on the signals from the various sensors and switches described above, the electronic control unit 150 outputs a command signal to the drive circuit of the door motors 123 and 133 for opening and closing the doors 120 and 130 to drive-control the door motors 123 and 133. .

  Further, the electronic control unit 150 outputs a command signal to the amplifiers 122 and 132 based on the signals from the various sensors and switches described above and drives the speakers 121 and 131 to output sound.

Next, with reference to FIG. 7, an example of the transition of the command signal to the amplifiers 122 and 132 when the door is opened will be described.
As shown in FIG. 7, for example, at the timing t1 when the right door 120 is fully closed, the handle switch 126 is turned on until the timing t3 (FIG. 7A). Thereby, the drive of the right door motor 123 is started at the subsequent timing t4 (FIG. 7B), and the right door 120 is driven in the opening direction (FIG. 7C). Then, when the right door 120 is fully opened at timing t6, the driving of the right door motor 123 is stopped.

  In the present embodiment, in order to output from the right door speaker 121 a lock release sound synthesized with a mechanism sound generated when the right door 120 is unlocked, the right door speaker amplifier 122 is output from timing t1 to timing t2. The command signal is then output (FIG. 7 (d)).

  Further, the right door speaker is output from the timing t2 to the timing t5 immediately before the timing t6 when the right door 120 is fully opened in order to output from the right door speaker 121 a moving sound synthesized with the mechanism sound generated with the movement of the right door 120. A command signal is output to the amplifier 122 (FIG. 7D).

  In addition, a command signal is output to the right door speaker amplifier 122 from timing t5 to timing t7 in order to output from the right door speaker 121 a full opening completion sound synthesized with the mechanism sound generated when the right door 120 is fully opened. (FIG. 7D).

Next, with reference to FIG. 8, an example of transition of command signals to the amplifiers 122 and 132 when the door is closed will be described.
As shown in FIG. 8, for example, at the timing t1 when the right door 120 is fully opened, the handle switch 126 is turned on until the timing t2 (FIG. 8A). Thereby, the drive of the right door motor 123 is started at the subsequent timing t3 (FIG. 8B), and the right door 120 is driven in the closing direction (FIG. 8C). Then, when the right door 120 is fully closed at timing t5, the driving of the right door motor 123 is stopped.

  In the present embodiment, prior to the start of the movement of the right door 120 in the closing direction, a closing start sound is output from the right door speaker 121 to the right door speaker amplifier 122 from timing t1 to timing t2. A command signal is output (FIG. 8D).

  Further, in order to output from the right door speaker 121 a moving sound that is synthesized with the mechanism sound that is generated as the right door 120 moves, the right door from timing t2 to timing t4 immediately before timing t5 when the right door 120 is fully closed. A command signal is output to the speaker amplifier 122 (FIG. 8D).

  In addition, a command signal is sent to the right door speaker amplifier 122 from timing t4 to timing t6 in order to output from the right door speaker 121 a full closing completion sound synthesized with the mechanism sound generated when the right door 120 is fully closed. Is output (FIG. 8D).

  The output mode of the unlocking sound, the door moving sound, the fully open completion sound, and the fully closed completion sound depends on the total travel distance of the vehicle 110 so that the characteristics of the synthesized sound are the same regardless of the total travel distance of the vehicle 110. Each is variably set.

According to the vehicle acoustic apparatus according to the present embodiment described above, the following effects can be obtained.
(6) The electronic control unit 150 changes the output mode of the sound output from the speakers 121 and 131 according to the total travel distance of the vehicle 110 when the door 120 (130) is opened and closed. To drive.

  The mechanism sound generated when the door 120 (130) is opened and closed varies depending on the rigidity of the vehicle 110 including the door 120 (130). In addition, the rigidity of the vehicle 110 decreases as the total travel distance of the vehicle increases.

  According to the above configuration, when the speakers 121 and 131 are driven by the electronic control device 150, the output mode of the sound output from the speakers 121 and 131 is varied according to the total travel distance of the vehicle 110. For this reason, the sound reflecting the total travel distance of the vehicle 110 is synthesized with the mechanism sound generated when the door 120 (130) is opened and closed. Therefore, the characteristics of the synthesized sound can be made the same regardless of the total travel distance of the vehicle 110.

<Modification>
In addition, the said embodiment can also be changed as follows, for example.
-In order to reproduce the mechanism sound in a vehicle of a different type from the vehicle 10, the output mode of the sound output from the speaker may be set. In this case, it is preferable to use a door shape, weatherstrip hardness, door mass, door material, hinge structure, and the like as parameters for setting the sound output mode.

In each of the above embodiments, at least one of the temperature sensor 41 and the humidity sensor 42 can be omitted.
An acceleration sensor that detects acceleration when the doors 20 and 30 are opened and closed can be provided instead of or in addition to the rotation angle sensors 43 and 44 of the first embodiment. In this case, the opening / closing speed of the doors 20 and 30 can be calculated based on the detection signal of the acceleration sensor. Moreover, the output mode of the sound output from the speaker can be varied according to the detection signal of the acceleration sensor.

-In 1st Embodiment, when the door 20 (30) is closed, a sound can also be output only from the door speaker 21 (31) of the said door 20 (30).
In the first embodiment, sound may be output from the speakers 12, 13, 21, and 31 when the door 20 (30) is opened.

  The electronic control device 50 can drive the speaker so that the output mode of the sound output from the speaker can be changed according to the opening degree of the door 20 (30) when the door 20 (30) starts to close. .

  The mechanism sound generated when closing the door 20 (30) varies depending on the opening of the door 20 (30) when the door 20 (30) starts to close. For example, when the opening degree of the door 20 (30) is large, the sound pressure level of the mechanism sound becomes larger and the reverberation time of the mechanism sound becomes shorter than when the door 20 (30) is small.

  Therefore, according to the above configuration, when the speaker is driven by the electronic control device 50, the door 20 (30) is opened when the output mode of the sound output from the speaker starts to close the door 20 (30). Variable according to the degree. For this reason, the sound reflecting the opening degree of the door 20 (30) at the beginning of closing at that time is synthesized with the mechanism sound generated when the door 20 (30) is opened and closed.

  The present invention can also be applied when a vehicle back door is opened and closed.

  DESCRIPTION OF SYMBOLS 10,110 ... Vehicle, 11, 111 ... Vehicle body, 12, 13 ... Rear speaker, 14, 15 ... Rear speaker amplifier, 16, 17, 116, 117 ... Courtesy switch, 18, 19 ... Hinge, 20, 30, 120 , 130 ... door, 21, 31, 121, 131 ... door speaker, 22, 32, 122, 132 ... door speaker amplifier, 41 ... temperature sensor, 42 ... humidity sensor, 43, 44 ... rotation angle sensor, 45, 46 ... Window opening sensor, 49... Odometer, 50, 150... Electronic control device (control unit), 123, 133 .. Door motor, 124, 134 ... Inside handle, 125, 135 ... Outside handle, 126, 136 ... Handle switch.

Claims (7)

When a vehicle door is opened and closed, in a vehicle acoustic device that outputs a sound from a speaker provided in the vehicle so as to be synthesized with a mechanism sound generated when the door is opened and closed,
A controller for driving the speaker to vary the output mode of the sound output from the speaker according to the vehicle state when the door is opened and closed;
Vehicle acoustic device. The control unit drives the speaker to vary the output mode of sound output from the speaker according to the state of the door of the vehicle when the door is opened and closed.
The vehicle acoustic device according to claim 1. The control unit drives the speaker to vary the output mode of the sound output from the speaker according to the opening and closing speed of the door when the door is opened and closed.
The vehicle acoustic device according to claim 2. The control unit drives the speaker to vary the output mode of the sound output from the speaker according to the opening of the door when the door starts to close.
The acoustic device for a vehicle according to claim 2 or claim 3. The control unit may change the output mode of the sound output from the speaker according to at least one of an opening / closing state of the vehicle window when the door is opened / closed and an opening / closing state of a door different from the door. Driving the speaker;
The vehicle acoustic device according to any one of claims 2 to 4. The control unit drives the speaker to vary the output mode of the sound output from the speaker according to the total travel distance of the vehicle when the door is opened and closed.
The acoustic device for a vehicle according to any one of claims 1 to 5. The control unit drives the speaker to vary the output mode of the sound output from the speaker according to at least one of outside air temperature and humidity when the door is opened and closed.
The vehicle acoustic device according to any one of claims 1 to 6.

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