JP6579156B2 - Vehicle sound system - Google Patents

Description

  The present invention relates to a vehicle sound system.

  2. Description of the Related Art In a vehicle, an audio device that sends audio sound is generally installed in a vehicle interior. Patent Documents 1 and 2 disclose a technique for localizing an audio sound so that the occupant can hear the audio sound from a predetermined position in the passenger compartment.

Japanese Patent No. 2776092 JP-A-5-85288

  By the way, for example, in a vehicle such as a sports car that is important to enjoy traveling, it is desired that the driver (driver's seat occupant) actively hear (sound) the engine sound. That is, since the engine sound well indicates the vehicle state, the engine sound is a very important factor when enjoying traveling.

  On the other hand, there is little need for the passenger in the passenger seat to clearly recognize the engine sound, and it is desirable to be able to enjoy the audio sound when the audio device is operating.

  The present invention has been made in view of the circumstances as described above, and an object of the present invention is to provide a vehicle sound system in which a driver's seat occupant can fully recognize engine sound while a passenger's occupant enjoys audio sound. It is to provide.

In order to achieve the above object, the present invention is premised on having the following basic solution. Chi words,
A vehicle sound system including an engine as a sound source disposed at a predetermined position of a vehicle and an audio device for a vehicle interior,
The vehicle has a driver seat and a passenger seat lined up in the vehicle width direction,
A first directing means for directing the engine sound generated by the engine toward the driver's seat occupant;
A second directing means for directing the audio sound generated from the audio device in the direction of the passenger on the passenger seat;
It is like that.

According to the above basic solution, the passenger can fully enjoy the audio sound. On the other hand, it is preferable for the driver seat occupant to clearly recognize the engine sound, clearly recognize the vehicle state based on (change) of the engine sound, enjoy driving and ensure safety. Become.

In addition to having the above basic solution method , the first invention further has the following solution method.
The vehicle further comprises a traveling state determining means for determining the traveling state of the vehicle,
The first directing means directs the engine sound toward the driver on condition that the traveling state determining means determines that the traveling state is a predetermined traveling state.
(Corresponding to claim 1 ). In this case, since the state where the engine sound is directed toward the driver's seat occupant is limited to a driving state where it is particularly required to hear the engine sound, the engine sound is unnecessarily generated for the driver's seat occupant. It is possible to prevent the situation from being heard.

In addition to having the above basic solution method, the second invention further has the following solution method.
The vehicle further comprises a traveling state determining means for determining the traveling state of the vehicle,
The second directing means directs the audio sound toward the passenger on the passenger seat on the condition that the traveling state determining means determines that the vehicle is in a predetermined traveling state.
(Corresponding to claim 2 ). In this case, the state in which the audio sound is directed toward the passenger on the passenger seat can be limited to a traveling state in which it is difficult to hear the audio sound.

In the first aspect of the invention and the second aspect of the invention, the predetermined traveling state may be a traveling state in which the driving load increases ( corresponding to claim 3 ). In this case, when the driving load is high, the driver can recognize the engine sound more clearly, and can concentrate on the vehicle state based on the engine sound, which is preferable in improving safety. Also, when the driving load is high, the audio sound is difficult to hear. At this time, by directing the audio sound to the passenger in the passenger seat, the passenger in the passenger seat fully enjoys the audio sound. be able to.

In addition to having the above basic solution, the third invention further has the following solution.
As the speaker that is driven and controlled by the audio device, a driver seat speaker that sends an audio sound toward the driver seat occupant and a passenger seat speaker that sends an audio sound toward the passenger occupant are separately provided,
The directivity of the passenger seat speaker is set to be lower than the directivity of the driver seat speaker,
(Corresponding to claim 4 ). In this case, the passenger seat occupant can enjoy the audio sound even in a situation where the viewing area on the passenger seat side is widened and the sitting posture of the passenger occupant is broken.

In addition to having the above basic solution, the fourth invention further has the following solution.
The vehicle has a tunnel portion extending in the front-rear direction between the driver seat and the passenger seat,
The first directing means directs the engine sound transmitted through the space in the tunnel portion toward the driver's seat occupant;
(Corresponding to claim 5 ). In this case, the engine sound can be directed to the driver's seat occupant by effectively using the tunnel portion separating the driver's seat and the passenger seat. Further, since the space in the tunnel portion is a part that transmits the engine sound well, it is preferable for actively listening to the driver's seat occupant.

The preferable aspect of this 4th invention is as follows. That is,
The trim member covering the tunnel portion is provided with an opening / closing member having an opening for communicating the space in the tunnel portion with the vehicle compartment,
The opening / closing member is capable of being driven so that at least the opening is directed toward a driver's seat occupant.
( Corresponding to claim 6 ). In this case, a more specific structure for directing the engine sound toward the driver's seat occupant can be provided. In addition, it is preferable to adjust the direction in which the engine sound is directed by driving the opening / closing member.

  According to the present invention, it is possible to make the driver's seat occupant fully recognize the engine sound while allowing the passenger's occupant to fully enjoy the audio sound.

The top view which shows an example of the vehicle to which this invention was applied. FIG. 2 is a partial side sectional view of the vehicle shown in FIG. 1. The disassembled perspective view which shows the structure of the engine sound transmission part formed in the dash panel. The front view which looked at the state near an instrument panel from the vehicle compartment rear part. The upper perspective view which shows the part which directs an engine sound toward a driver's seat passenger | crew. FIG. 6 is a cross-sectional view of a main part in the tunnel part of FIG. 5. The figure which shows the control-system example of an audio apparatus in a block diagram. The figure which shows the example of a control system for changing the directivity direction of an engine sound. The flowchart which shows the example of control for changing the directivity direction of an engine sound. The flowchart which shows another control example for changing the directivity direction of an engine sound.

  1 and 2, the vehicle V is a two-door open car in the embodiment. In the figure, reference numeral 1 denotes a dash panel that partitions the engine room 2 and the vehicle compartment 3. 4 is a bonnet that covers the engine room 2 from above, 5R and 5L are a pair of left and right side doors, 6 is a trunk lid, and 7 is a roof. Reference numeral 8 denotes a driver seat, 9 denotes a passenger seat, and 10 denotes a steering handle. Further, 11 is an instrument panel, and 12 is a front window glass.

  As shown in FIG. 2, the roof 7 has a rear window glass 7a. FIG. 2 shows a state in which the roof 7 is closed, that is, the vehicle compartment 3 is covered by the roof 7 from above. . FIG. 1 shows a state in which the roof 7 is closed, but shows a state in which the roof 7 is seen through, and a state in which the upper end portion of the front window glass 12 is partially cut is shown.

  The floor panel 20 constituting the floor surface of the passenger compartment 3 has a tunnel portion 21 extending in the front-rear direction at the center in the vehicle width direction, and the upper surface of the tunnel portion 21 is covered with a trim material 22. The rear end portion of the floor panel 20 continues to the rear panel 24 via the kick-up portion 23.

  An engine 30 is disposed in the engine room 2 configured in front of the dash panel 1. The engine 30 is vertically arranged in the embodiment, the engine body is indicated by reference numeral 30A, the intake system member is indicated by reference numeral 30B, and the exhaust system member is indicated by reference numeral 30C. A transmission 31 is connected to a rear portion of the engine 30 (engine body 30A).

  The engine 30 is equipped with auxiliary devices such as an alternator driven by the engine main body 30A and an air conditioner compressor, but these are not shown. The engine sound is a sound obtained by mixing the sound generated when the engine body 30A is rotated or burned, the sound of the intake and exhaust, and the sound of driving the auxiliary devices.

  A differential device (differential gear) 40 is disposed at the rear of the vehicle V. The differential device 40 and the transmission 31 (that is, the engine 30) are connected by a propeller shaft 41. That is, the vehicle V is a rear wheel drive vehicle in the embodiment. The transmission 31 and the differential device 40 are connected by an annular torque tube 44 disposed so as to surround the propeller shaft 41 (see also FIG. 6).

  An exhaust passage 42 extending from the engine 30 extends rearward. The exhaust passage 42 is connected to a muffler 43 disposed below the rear portion of the vehicle. The muffler 43 is connected to a pair of left and right exhaust pipes 43A opened rearward. The exhaust gas is finally discharged from the exhaust pipe 43A to the outside (atmosphere).

  In this embodiment, the engine sound and the audio sound are localized at predetermined positions. That is, the first position (part or region) where the engine sound is localized is indicated as the first position T1, and the second position where the audio sound is localized is indicated by the symbol T2. In addition, in the embodiment, the alarm sound is localized at the third position T3.

  The first position T1 is set on the front window glass 12. Specifically, the first position T <b> 1 is set so as to be positioned at a substantially central portion in the vehicle width direction at a height position substantially the same as the position of the driver's eyes in the front window glass 12.

  Further, the second position T2 is set to a position lower than the first position T1 by a predetermined distance. Specifically, the second position T <b> 2 is set so as to be located at a substantially central portion in the vehicle width direction of the surface of the instrument panel 11 facing substantially rearward. The second position T2 is set to be wider in the vehicle width direction than the first position T1 (in order to let the driver and the passenger on the passenger seat hear an audio sound). The first position T1 and the second position T2 are separated by a predetermined distance, which is preferable in distinguishing and distinguishing engine sound and audio sound. However, the predetermined distance is at least 30 cm. Above, it is preferable to set it as 50 cm or more.

  The third position T3 is set so as to be positioned on the driver's line of sight extension when the driver seated in the driver's seat 8 looks forward. The third position T3 can be set, for example, on the front window glass 12, and can be set further forward than the front window glass 12. However, the third position T3 is set as an information presentation position to the driver by the head-up display. Is preferred.

  In addition, the region of the localization positions T1, T2, and T3 is not limited to the illustrated one, and may be, for example, a region enlarged in the vehicle width direction or the vertical direction, and the position of T1 is within the region of the front window glass 12. It may be variable according to the vehicle state, for example, the steering angle.

  Next, a specific structural example for localizing the engine sound to the first position T1 will be described. First, in the dash panel 1, an opening 50 is formed at a height and a vehicle width direction position where the engine 30 (engine body 30A) is located, as shown in FIG. The opening 50 communicates the engine room 2 and the inside of the instrument panel 11 (the space thereof). The opening 50 is covered with a film member 51 that blocks air and liquid. That is, the engine sound from the engine room 2 is effectively transmitted to the instrument panel 11 by shaking the membrane member 51, so that the occupant can hear the engine sound from the first position. .

  The instrument panel 11 has an opening 11a on the upper surface thereof (see FIG. 2). The engine sound transmitted into the instrument panel 11 passes through the opening 11a and is transmitted toward the front windshield 12, so that it is reflected by the front windshield 12 and is seated on the driver's seat 8. It will be transmitted to the driver who is. That is, the specific position T1 · 1 is a part where the engine sound is reflected by the front window glass 12. Air or liquid in the engine room 2 is blocked by the membrane member 51 and is prevented from flowing into the vehicle compartment 3.

  As shown in FIG. 3, a valve member 52 is attached to the opening 50 covered with the membrane member 51. The valve member 52 includes a short cylindrical member 52A that faces the opening 50 and an electromagnetic valve body 52B that opens and closes the cylindrical member 52A. By setting the valve member 52 to the open position, the engine sound from the opening 50 is transmitted into the instrument panel 11 through the tubular member 52A (realization at the first position T1). By setting the valve member 52 to the closed position, the engine sound is not localized at the first position T1.

  The engine sound is further directed toward the driver's seat occupant. In the embodiment, the engine sound is directed by using an opening / closing member 56 set on the upper surface of the front end portion of the trim member 22 that covers the tunnel portion 21. Hereinafter, this point will be described. First, the valve member 55 is disposed in an opening formed on the upper surface of the front end portion of the tunnel portion 55 (see FIG. 2). The valve member 55 has substantially the same configuration as the valve member 52 shown in FIG. That is, the opening part formed in the tunnel part 21 is covered with the film | membrane member which interrupts | blocks air, and the valve member 55 is attached here.

  An opening 44 a is formed on the upper surface of the torque tube 44 at a position near the valve member 55. As a result, the engine sound from the engine room 2 (actually, the mixed sound of the engine sound, the rotation sound of the propeller shaft 41, and the exhaust sound) is mixed into the torque tube 44, the opening 44a, It is transmitted to the position of the valve member 55 through the tunnel portion 21. As described above, the setting is such that the engine sound is sufficiently transmitted to the valve member 55.

  A rotary opening / closing member 56 is provided on the upper surface of the front end portion of the trim member 22 that covers the tunnel portion 21. As shown in FIG. 6, the opening / closing member 56 is formed of an arc-shaped plate material that substantially constitutes a part of the upper surface of the trim material 22, and an opening 56 a is formed in a part thereof. The opening / closing member 56 can be rotated around an axis Z extending in a direction perpendicular to the plane of FIG. In FIG. 6, the opening 56 a is obliquely upward toward the driver's seat, that is, is directed toward the driver's seat occupant. The opening / closing member 56 can be changed between a state in which the opening portion 56a faces (directs) toward the driver's seat occupant side and a state in which the opening portion 56a faces upward. Note that a member for opening and closing the opening 56c can be provided separately. In this case, the opening area of the opening 56a can be changed stepwise or continuously.

  As is clear from FIGS. 2 and 6, in the state where the valve member 55 is in the open position, the engine sound transmitted into the tunnel portion 21 can be transmitted by directing the opening 56 a toward the driver's seat occupant. It will be directed toward the driver's seat occupant through the opening 56a, so that the driver's seat occupant can recognize the engine sound more clearly.

  In order to localize the second position T2 for audio sound, in the embodiment, a total of four speakers 60UL, 60UR, 60BL, and 60BR are provided in the vertical and horizontal directions as shown in FIG. The pair of left and right speakers 60UL and 60UR located above are tweeter + full range and are attached to the left and right front pillars 13L and 13R. The pair of left and right speakers 60BL and 60BR positioned below is tweeter + full range and is attached to the left and right side doors 5L and 5R.

  Using the four speakers 60UL, 60UR, 60BL, and 60BR, the sound is localized so as to be heard from the second position T2 by a known time alignment method. Further, the second position T2 is moved from the position shown in FIG. 4 to the left position (for example, in the vehicle width direction, away from the driver's seat 8 and in the direction of approaching the passenger seat 9) by the time alignment method. The vehicle can be moved to a desired position such as the lower left (in the vehicle width direction, an oblique direction of downward movement while being separated from the driver's seat 8) or the rear of the driver's seat.

  The third position T3 is localized so that an alarm sound can be heard from the third T3 by a known time alignment method using the four speakers 60UL, 60UR, 60BL, and 60BR. In other words, the alarm sound is superimposed on the audio sound and flows from the speakers 60UL, 60UR, 60BL, and 60BR.

As speakers for audio sound, speakers 61L, 61R for driver's seat passengers
In addition, speakers 62L and 62R for passengers in the passenger seat are provided (see FIGS. 1, 4 and 5). The speakers 61L, 61R for the driver's seat occupant are arranged at a small interval in the vehicle width direction with respect to the instrument panel 11 in front of the driver's seat 8. As the speakers 61L and 61R for the driver's seat passengers, those having strong directivity are used, and the direction and range of the directivity are indicated by a chain line in FIG.

  The speakers 62L and 62R for the passenger on the passenger seat are arranged at a small interval in the vehicle width direction with respect to the instrument panel 11 in front of the passenger seat 9. The speakers 62L and 62R for the passenger seat occupant are those having less directivity than the speakers 61L and 61R for the driver seat occupant, and the direction and range of the direction are indicated by a one-dot chain line in FIG. Since the directivity of the speakers 62L and 62R for the passenger seat occupant is weak, the passenger seat occupant can enjoy the audio sound even when the posture seated on the passenger seat 9 is broken.

  FIG. 7 shows an example of the audio device OD. In the figure, reference numeral 70 denotes a DSP (digital sound processor). When the signal from the audio source 71 is input, the DSP 70 performs the above-described time alignment processing so that the audio sound is localized at the second position T2, and the speaker 60UL through the amplifier 72 60UR, 60BL, and 60BR are driven. Note that the audio source 71 is for high resolution and has extremely high sound quality.

  The DSP 70 has storage means (memory) 73 that stores alarm sound sources. When a command signal for alarming is input, the DSP 70 performs time alignment processing so that the alarm sound is localized at the third position T3, and the speakers 60UL, 60UR, 60BL, Drive 60BR.

  The DSP 70 further controls driving of the speakers 61L, 61R, 62L, and 62R. That is, in accordance with a command signal from the controller U, which will be described later, basically, the passenger seat occupant speakers 62L and 62R are driven with high-quality audio sound regardless of the running state. On the other hand, driving of the speakers 61L and 61R for the driver's seat occupant is stopped under predetermined traveling conditions (when the driving load is high in the embodiment).

  In the embodiment, the exhaust sound is further localized. That is, the fourth position T4 at which the driver can hear the exhaust sound is set at a substantially central part in the vehicle width direction in the rear part of the passenger compartment (see FIGS. 1 and 2). The fourth position T4 has a structure in which a valve member is disposed at the opening to the vehicle interior, and is substantially the same structure as shown in FIG. Omitted.

  The fourth position T4 (opening thereof) is connected via a duct 81 to an extra chamber 80 opened to the outside for ventilation in the vehicle interior (see FIGS. 1 and 2). Since the extra chamber 80 is formed near the exhaust pipe 30A, the exhaust sound can be effectively transmitted to the fourth position T4. The valve member at the fourth position T4 can be always fully open, but can be closed when sports driving such as city driving or low speed driving is not assumed. Further, the opening degree of the valve member can be gradually increased as the engine speed increases.

  FIG. 8 shows an example of a control system when performing engine sound directivity control and driving control of the speakers 61L and 61R in accordance with the running state. In the figure, U is a controller configured using a microcomputer. The controller U receives signals from sensors or switches S1 and S3. S1 is a G sensor that detects G (acceleration and deceleration in the front-rear and lateral directions) acting on the vehicle body. S2 is a rotation speed sensor that detects the engine rotation speed. S3 is an ignition switch. In addition to the audio device OD, the controller U controls the opening and closing of the valve members 52 and 55, and further performs the rotation control of the opening and closing member 56 (engine sound directivity control).

  Next, an example of control by the controller U will be described with reference to the flowchart of FIG. 9. In the following description, Q indicates a step. In the following description, the normal mode is a default state in which the engine sound is not directed to the driver's seat occupant. At this time, the valve member 55 is closed so that the engine sound does not pass through the opening 56a. (In the embodiment, the localization of the engine sound at the first position T1 is performed), and the driver's seat passenger speakers 61L and 61R are driven. In the sport mode, the valve member 55 is opened, the engine sound from the opening 56a is directed to the driver's seat occupant, and the driving of the driver's seat occupant speakers 61L and 61R is stopped. Is done. Note that the passenger seat occupant speakers 62L and 62R are driven in both the normal mode and the sport mode so that the passenger occupant can always enjoy the audio sound as long as the audio device OD is turned on.

  The sport mode is selected when the driving load is large. The state in which the driving load increases can be said to be a situation where the vehicle is actively driven (running). For example, G (lateral G or front and rear) that acts on the vehicle body when the engine speed is higher than a predetermined speed. When at least one or both of G) is a predetermined value or more, when traveling on a winding road, when frequently accelerating / decelerating, when frequently operating a steering wheel, when traveling on a mountain road, When traveling on a circuit, when the vehicle speed is high (for example, when exceeding 80 km / h). Note that the normal mode is set at the beginning of the control start.

  Based on the above, it is first determined in Q1 whether or not the audio sound device OD is on. If the determination in Q1 is YES, it is determined in Q2 whether at least one of the front-rear direction G or the horizontal direction G is greater than a predetermined value (for example, 0.3 G). If the determination in Q2 is YES, the timer is reset to the initial value 0 in Q3 and a new count is started. Thereafter, in Q4, it is determined whether or not a short predetermined time (1 second in the embodiment) has elapsed since G greater than the predetermined value was detected. When the determination of Q4 is NO, the determination of Q4 is repeated.

  If YES in Q4, the same determination as Q2 is made again in Q5. When the determination in Q5 is YES, a large G continues (or repeats) in a short time, and the driver is actively driving to enjoy driving. .

  If YES in Q5, the timer is reset to 0 and a new count is started in Q6. Thereafter, in Q7, the mode is changed to the sport mode, the engine sound is changed to the state directed to the driver's seat occupant from the opening portion 56a, and the driving of the drivers' seat occupant speakers 61L and 61R is stopped. Thus, in a traveling state where G is large and the manual driving load is high, the driver can recognize the engine sound more clearly and can recognize the vehicle state more clearly based on (changes) in the engine sound. This makes driving more enjoyable and preferable for safe driving. Even in the sport mode, audio sound is directed from the passenger seat occupant speakers 62L and 62R to the passenger occupant, so that the passenger occupant can fully enjoy the audio sound.

  After Q7, at Q8, it is determined whether or not G in the front-rear direction and the horizontal direction are each equal to or less than a predetermined value (0.3 G in the embodiment). If NO in Q8, the process returns to Q6.

  If YES in Q8, it is determined in Q9 whether or not the count value in the timer exceeds a predetermined long time (30 seconds in the embodiment). If the determination in Q9 is NO, the process returns to Q7.

  If the determination in Q9 is YES, it means that the situation in which the sport mode is not being performed is clearly confirmed, and in Q10, the mode is changed (returned) to the normal mode.

If the determination in Q1 is NO, the sport mode is set in Q12 (however, audio sound does not flow into the passenger compartment). Note that, when the determination in Q1 is NO, the normal mode may be set ( return as it is).

  If NO in Q2 or NO in Q5, the process proceeds to Q10.

  After Q10 or after Q12, in Q11, it is determined whether or not the engine has been stopped (determination of whether or not the ignition switch S3 is turned off). If NO in Q11, the process returns to Q1. If YES in Q11, the control is terminated.

  As is clear from the above description, in the embodiment of FIG. 9, when the sports mode is set, it is determined that the predetermined running condition set in the sports mode does not satisfy the predetermined long time (in the embodiment, 30 seconds). ) Until it is confirmed that the sport mode is maintained, the sport mode is maintained as it is (the frequent change between the sport mode and the normal mode is suppressed). In order to prevent or suppress frequent changes between the sport mode and the normal mode, for example, a predetermined value (G value) at Q8 is set to be higher than a predetermined value (G value) at Q2 or Q5. It can also be set to a smaller value.

  FIG. 10 shows another control example corresponding to FIG. In this control example, the engine speed is used as a predetermined traveling condition instead of G acting on the vehicle body. That is, in Q22 (corresponding to Q2 in FIG. 9), Q25 (corresponding to Q5 in FIG. 9), and Q29 (corresponding to Q9 in FIG. 9), the engine speed is larger than a predetermined speed (5500 rpm in the embodiment) (or below) )). That is, in the embodiment, the maximum allowable rotational speed of the engine is set to about 7500 rpm, and the engine rotational speed 5500 rpm as a predetermined value is set as a high rotational speed that is lower by a predetermined amount than the maximum allowable rotational speed ( Number of revolutions near maximum output or maximum torque). The control in FIG. 10 is the same as that in FIG. 9 except that the engine speed is used instead of G in FIG.

  In addition, switching between the sport mode and the normal mode may be performed according to the accelerator opening. In this case, when the accelerator opening is large (greater than a predetermined opening), the sport mode is set. The normal mode may be set when the accelerator opening is small.

Although the embodiments have been described above, the present invention is not limited to the embodiments, and appropriate modifications can be made within the scope described in the scope of claims. For example, the following can also be made.
(1) The engine sound at the first position T1 may be localized only in the sports mode (the driver can recognize the engine sound more clearly). Further, the localization of the engine sound at the first position T1 may not be performed.
(2) In the sport mode, the audio sound with reduced sound quality can be played toward the driver's seat occupant while driving the speakers 61L, 61R for the driver's seat occupant. That is, the audio sound from the speakers 61L and 61R for the driver's seat occupant can be set to high sound quality (for example, high resolution) in the normal mode and to low sound quality (for example, CD level or MP3 level) in the sports mode. . The adjustment of the sound quality is, for example, frequency resolution adjustment (changing the sampling frequency), amplitude resolution adjustment (changing the number of quantization bits), whether or not to cut a high frequency region above a predetermined level, It can be performed by a known appropriate method such as whether or not to cut the following low frequency. When the audio sound is set to high resolution during normal driving (normal mode), it is relatively easy to distinguish between engine sound and audio sound because of the high resolution sampling frequency and the number of quantization bits.
(3) The passenger seat occupant speakers 62L and 62R may be stopped in the normal mode while being driven in the sports mode.
(4) Audio sound localization (localization at the second position T2) may not be performed.
(5) A mode change switch that is manually operated by the driver can be provided, and switching between the sport mode and the normal mode can be performed according to the operation of the mode change switch.
(6) In the normal mode, the valve member 55 may be opened and the opening 56a may be directed straight upward (the engine sound is not directed to the driver's seat occupant). When the engine sound is allowed to flow through the opening 56a into the passenger compartment 3 in the normal mode, for example, the opening area of the opening 56a can be adjusted from fully open to fully closed. In comparison, the opening area of the opening 56a can be reduced. From the same viewpoint, the opening area of the opening 56a can be made constant, and the opening degree of the valve member 55 can be made smaller in the normal mode than in the sports mode.
(7) The setting position for directing the engine sound to the driver's seat occupant is not limited to the tunnel portion 21, for example, a portion positioned immediately before the driver's seat 8 in the dash panel 1, An appropriate position can be selected such as near the air-conditioning air outlet.
(8) The speakers 61l and 61R for the driver's seat occupant can be disposed at appropriate positions, for example, can be disposed at the headrest of the driver's seat 8. Similarly, the speakers 62L and 62 for passengers on the passenger seat can also be disposed at appropriate positions, for example, on the headrest of the passenger seat 9.
(9) The alarm sound may include a rev limit sound for notifying when the engine speed has reached the upper limit. The localization position of the alarm sound can be changed to an appropriate position, but is preferably a position different from the localization position of the engine sound or audio sound. Also, the alarm sound may not be localized. Similarly, the localization of the exhaust sound may not be performed.
(10) The present invention is not limited to an open car but can be applied to various types of vehicles such as a sedan type, an SUV type, and a four-wheel drive vehicle. Further, the transmission 31 may be disposed at the rear of the vehicle (the position of the differential device 40), and the front wheel drive vehicle (so-called FF vehicle) that does not have the propeller shaft 41 and the engine 30 are located behind the vehicle compartment. It may be arranged. Further, the opening / closing member 56 may be able to select a position where the opening 56a faces the passenger seat. Of course, the object of the present invention is not limited to what is explicitly stated, but also implicitly includes providing what is substantially preferred or expressed as an advantage.

  According to the present invention, the audio sound and the engine sound can be appropriately heard by distinguishing between the driver seat passenger and the passenger seat passenger.

T1: Engine sound position T2: Audio sound position T3: Alarm sound position OD: Audio device U: Controller S1: G sensor S2: Revolution sensor S3: Ignition switch 1: Dash panel 2: Engine room 3: Vehicle compartment 5L, 5R : Side door 8: Driver's seat 9: Passenger seat 11: Instrument panel 11a: Opening (for engine sound passage)
12: Front window glass 13L, 13R: Front pillar 20: Floor panel 21: Tunnel part 22: Trim material 23: Kick-up part 24: Rear panel 30: Engine 31: Transmission 40: Differential gear 41: Propeller shaft 42: Exhaust Passage 43: Muffler 43A: Exhaust pipe 50: Opening (for engine sound transmission)
51: Membrane member 52: Valve member 55: Valve member 56: Opening / closing member 56a: Openings 60UL, 60UR, 60BL, 60BR: Speakers 61L, 61R: Speakers (for driver's seat passengers)
62L, 62R: Speaker (for passengers on the passenger seat)
70: DSP
71: Sound source (for audio)
72: Amplifier 73: Storage means (for alarm sound)
80: Extra chamber 81: Duct

Claims (6)

A vehicle sound system including an engine as a sound source disposed at a predetermined position of a vehicle and an audio device for a vehicle interior,
The vehicle has a driver seat and a passenger seat lined up in the vehicle width direction,
A first directing means for directing the engine sound generated by the engine toward the driver's seat occupant;
The audio sound generated from the audio device, the second directing means is provided et been to orient in the direction of the passenger,
The vehicle further comprises a traveling state determining means for determining the traveling state of the vehicle,
The first directing means directs the engine sound toward the driver on condition that the traveling state determining means determines that the traveling state is a predetermined traveling state.
A vehicle sound system characterized by the above. A vehicle sound system including an engine as a sound source disposed at a predetermined position of a vehicle and an audio device for a vehicle interior,
The vehicle has a driver seat and a passenger seat lined up in the vehicle width direction,
A first directing means for directing the engine sound generated by the engine toward the driver's seat occupant;
A second directing means for directing the audio sound generated from the audio device toward the passenger in the passenger seat;
The vehicle further comprises a traveling state determining means for determining the traveling state of the vehicle,
The second directing means directs the audio sound toward the passenger on the passenger seat on the condition that the traveling state determining means determines that the vehicle is in a predetermined traveling state.
A vehicle sound system characterized by the above. In claim 1 or claim 2,
The predetermined traveling state is a traveling state in which the driving load increases.
A vehicle sound system characterized by the above. A vehicle sound system including an engine as a sound source disposed at a predetermined position of a vehicle and an audio device for a vehicle interior,
The vehicle has a driver seat and a passenger seat lined up in the vehicle width direction,
A first directing means for directing the engine sound generated by the engine toward the driver's seat occupant;
A second directing means for directing the audio sound generated from the audio device toward the passenger in the passenger seat;
As the speaker that is driven and controlled by the audio device, a driver seat speaker that sends an audio sound toward the driver seat occupant and a passenger seat speaker that sends an audio sound toward the passenger occupant are separately provided,
The directivity of the passenger seat speaker is set to be lower than the directivity of the driver seat speaker,
A vehicle sound system characterized by the above. A vehicle sound system including an engine as a sound source disposed at a predetermined position of a vehicle and an audio device for a vehicle interior,
The vehicle has a driver seat and a passenger seat lined up in the vehicle width direction,
A first directing means for directing the engine sound generated by the engine toward the driver's seat occupant;
A second directing means for directing the audio sound generated from the audio device toward the passenger in the passenger seat;
The vehicle has a tunnel portion extending in the front-rear direction between the driver seat and the passenger seat,
The first directing means directs the engine sound transmitted through the space in the tunnel portion toward the driver's seat occupant;
A vehicle sound system characterized by the above. In claim 5 ,
The trim member covering the tunnel portion is provided with an opening / closing member having an opening for communicating the space in the tunnel portion with the vehicle compartment,
The opening / closing member is capable of being driven so that at least the opening is directed toward a driver's seat occupant.
A vehicle sound system characterized by the above.

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