JP2015082029A - False sound providing system including false sound generation device and false sound reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a false sound providing system which enables a user to freely generate, edit, and reproduce all sounds as false engine sound.SOLUTION: The false sound providing system for providing false sound according to a vehicle driving state comprises: a false sound generation device including sound source input means for accepting an input of an arbitrary sound source from a user, effect setting means for accepting, from the user, arbitrary setting of effect data which affects the sound source in accordance with the vehicle driving state, and storage means in which the sound source and the effect data are stored; and a false sound reproducing device including sound source data acquisition means for acquiring the sound source and the effect data, driving state data acquisition means for acquiring vehicle driving state data, false sound generation means for generating false sound by applying effects based on the effect data corresponding to the driving state data, to the sound source, and false sound reproducing means for reproducing the generated false sound.

Description

  The present invention relates to a pseudo sound providing system including a pseudo sound generating device and a pseudo sound reproducing device, and more specifically, a pseudo sound generating device for generating pseudo engine sound and the like in an electric vehicle and the like, and a pseudo sound reproducing device for reproducing. , And a pseudo sound providing system comprising these.

  In recent years, due to air pollution and energy problems, instead of gasoline vehicles using gasoline as fuel, electric vehicles (EV) that run on electricity have been popularized. An electric motor, which is a power source of an electric vehicle, hardly generates sound when traveling as compared with an internal combustion engine such as a gasoline engine. This is an advantage with respect to the problem of noise, but there is also a possibility that the driver may not be able to obtain a feeling of speed and a feeling of traveling when traveling. Therefore, a technique for generating a pseudo engine sound corresponding to the driving state of the vehicle inside and outside the electric vehicle has been proposed.

  As a technique for generating such pseudo engine sound, Patent Document 1 specifies the driving state of an automobile by the accelerator opening and the engine speed, and specifies engine sound data recorded in advance and stored in a storage device. There has been proposed a technique of selecting and repeating reproduction within a range of operating states. Further, Patent Document 2 includes means for storing a plurality of pseudo engine sound data, and the user selects arbitrary pseudo engine sound data from the storage means, and outputs the selected pseudo engine sound to the inside and outside of the vehicle. Technology has been proposed.

JP 2000-10576 A JP 2006-349844 A

  However, since the technology described in Patent Documents 1 and 2 reproduces the sound of an actual gasoline engine according to the driving state of the vehicle, it is used by some users who are not familiar with the vehicle. There is a possibility that it does not lead to improvement of comfort for the person. Moreover, in the techniques described in Patent Documents 1 and 2, the sound source that can be used as the pseudo engine sound is limited to the existing (actually recorded) gasoline engine sound, and is predetermined in each driving state of the vehicle. Therefore, the degree of freedom and convenience of the system is low. Furthermore, it is necessary to store in advance a pseudo engine sound to be reproduced in the vehicle, and a new pseudo engine sound can be added or an unnecessary pseudo engine sound can be deleted at an arbitrary timing and place. There is also a problem that it is difficult.

  The present invention has been made in view of the above circumstances, and the purpose of the present invention is to enable a user to freely generate, edit, and play back any sound as a pseudo engine sound, and to reproduce a highly convenient pseudo sound. To provide a provision system.

  In order to solve the above problems, a pseudo sound providing system for providing a pseudo sound according to a driving state of a vehicle according to an embodiment of the present invention includes a pseudo sound generating device and a pseudo sound reproducing device. And The pseudo-sound generation device includes sound source input means for receiving an input of an arbitrary sound source by a user, and effect data relating to an effect that affects the sound source according to a driving state of the vehicle, and the arbitrary effect data by the user Effect setting means for receiving the setting of the sound source, and storage means for storing the sound source and the effect data, the pseudo sound reproduction device, the sound source data acquisition means for acquiring the sound source and the effect data, and driving state data relating to the driving state of the vehicle Driving state data acquisition means for acquiring sound, pseudo sound generation means for generating a pseudo sound by applying an effect based on effect data corresponding to the driving state data to the sound source, and pseudo sound reproduction for reproducing the generated pseudo sound And means.

  The pseudo sound may be an engine sound of the vehicle, and the driving state data may include an accelerator opening degree and a motor rotation speed of the vehicle.

  The pseudo sound generating device further includes a pseudo sound generating means for generating an artificial sound by applying an effect based on the effect data to the sound source, and a pseudo sound reproducing means for reproducing the generated pseudo sound. Also good.

  The simulated sound generation device may further include an operation state table input unit that receives an input of an arbitrary operation state table by the user. Further, the driving state table defines the number of driving states corresponding to the effect that affects the sound source, and the sound source data acquiring unit may further be configured to acquire the driving state table.

  Further, the sound source data acquisition means may directly acquire the sound source and effect data from the pseudo sound generation device. Alternatively, the pseudo sound providing system further includes a server connected to the pseudo sound generating device and the pseudo sound reproducing device via the Internet, and the sound source data acquiring means acquires the sound source and the effect data via the server. There may be.

  Furthermore, a pseudo sound generating device for generating a pseudo sound according to a driving state of a vehicle according to an aspect of the present invention includes a sound source input unit that receives an input of an arbitrary sound source by a user, and a driving state of the vehicle. According to the present invention, there is provided effect setting means for receiving the effect data relating to the effect affecting the sound source, and receiving arbitrary setting of the effect data by the user, and storage means for storing the sound source and the effect data.

  Further, according to one aspect of the present invention, a pseudo sound reproduction device for reproducing a pseudo sound according to a driving state of a vehicle has effect data regarding an effect applied to a sound source according to an arbitrary sound source and the driving state of the vehicle. A sound source data acquisition means to acquire, a driving state data acquisition means to acquire driving state data relating to the driving state of the vehicle, and an effect based on the effect data corresponding to the driving state data is applied to the sound source to generate a pseudo sound It is characterized by comprising a pseudo sound generating means and a pseudo sound reproducing means for reproducing the generated pseudo sound.

  Further, according to one aspect of the present invention, a pseudo sound providing method for providing a pseudo sound according to a driving state of a vehicle includes a sound source input step for receiving an input of an arbitrary sound source by a user, and a driving state of the vehicle. The effect data relating to the effect applied to the sound source according to the effect setting step for accepting any effect data setting by the user, the storing step for storing the sound source and the effect data, and the sound source data for obtaining the sound source and the effect data An acquisition step, a driving state data acquisition step for acquiring driving state data relating to the driving state of the vehicle, and a pseudo sound generation step for generating a pseudo sound by applying an effect based on the effect data corresponding to the driving state data to the sound source And a pseudo sound reproduction step for reproducing the generated pseudo sound. And features.

  Moreover, the pseudo sound generation program for generating the pseudo sound according to the driving state of the vehicle according to one aspect of the present invention receives an input of an arbitrary sound source by the user to the control unit included in the pseudo sound generation device. The sound source input step, the effect data relating to the effect applied to the sound source according to the driving state of the vehicle, the effect setting step for accepting the setting of arbitrary effect data by the user, and the sound source and the effect data are generated by the pseudo sound generator. And a storage step of storing in a storage unit.

  According to one aspect of the present invention, a pseudo sound reproduction program for reproducing a pseudo sound according to a driving state of a vehicle is provided in a control unit included in the pseudo sound reproducing device according to an arbitrary sound source and the driving state of the vehicle. A sound source data acquisition step for acquiring effect data related to the effect applied to the sound source, a driving state data acquisition step for acquiring driving state data regarding the driving state of the vehicle, and an effect based on the effect data corresponding to the driving state data for the sound source Is applied, and a pseudo sound generation step for generating a pseudo sound and a pseudo sound reproduction step for reproducing the generated pseudo sound are executed.

  According to the present invention, it becomes possible for a user to freely generate, edit, and reproduce any sound as a pseudo engine sound, and a pseudo sound providing system with high flexibility and convenience is provided. Further, according to the present invention, it is possible to acquire a pseudo engine sound at an arbitrary place and timing.

It is a figure which shows schematic structure of the pseudo | simulation sound provision system of embodiment of this invention. It is a flowchart which shows the flow of the pseudo | simulation sound production | generation process in embodiment of this invention. It is a figure which shows the example of the sound source input into the pseudo | simulation sound production | generation apparatus in embodiment of this invention. It is a figure which shows the example of the driving | running state table | surface input into the pseudo | simulation sound production | generation apparatus in embodiment of this invention. It is a figure which shows the example of the setting screen of the effect in embodiment of this invention. It is a flowchart which shows the flow of the pseudo sound reproduction | regeneration processing in embodiment of this invention. FIG. 6 shows (a) a timing shift for reproducing a pseudo sound and (b) a timing shift for acquiring operating state data in the pseudo sound reproducing apparatus according to the embodiment of the present invention.

  Hereinafter, a pseudo sound providing system according to an embodiment of the present invention will be described with reference to the drawings. The present embodiment is an example in which the present invention is applied to generation and reproduction of pseudo engine sound reproduced in a vehicle of the electric vehicle 2.

  FIG. 1 is a diagram showing a schematic configuration of a pseudo sound providing system 1 according to an embodiment of the present invention. The pseudo sound providing system 1 according to the present embodiment includes a pseudo sound generating device 10, a pseudo sound reproducing device 20, and a server 30. The pseudo-sound generation device 10 and the pseudo-sound reproduction device 20 can directly transmit and receive data to each other by wireless or wired communication. In addition, the pseudo-sound generation device 10 and the pseudo-sound reproduction device 20 can transmit and receive data to and from the server 30 by wireless or wired communication via an external network such as the Internet 3.

  The server 30 acquires and stores a data file, which will be described later, generated by the pseudo sound generation device 10. In addition, the server 30 cooperates with other servers and terminal devices to provide a web service such as a cloud, a web application, or a file server that stores various pseudo sound data files to be reproduced by the pseudo sound reproduction device 20. Function as such.

  The pseudo sound generation device 10 is a device for generating a pseudo sound (pseudo engine sound in the present embodiment) reproduced by the pseudo sound reproduction device 20, and is configured by a PC (Personal Computer). In addition to the PC, other types of terminals such as smartphones and tablet terminals can be used.

  The simulated sound reproduction device 20 is an in-vehicle device mounted on the electric vehicle 2. The pseudo sound reproduction device 20 acquires a data file related to the pseudo engine sound from the pseudo sound generation device 10 or the server 30, generates a pseudo engine sound in cooperation with the driving state data acquired from the electric vehicle 2, and reproduces it in the vehicle. .

  First, the configuration of the pseudo sound generation device 10 and the pseudo sound generation processing of the present embodiment will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, the pseudo sound generation device 10 includes a CPU 11, a storage unit 12, an operation unit 13, a display unit 14, a communication unit 15, and a sound output unit 16. The CPU 11 communicates with each element included in the pseudo-sound generating device 10 and performs overall control of the device. The storage unit 12 includes a RAM, a ROM, and a nonvolatile storage device, and stores various programs and data executed by the pseudo sound generation device 10. Various programs stored in the storage unit 12 are executed by the CPU 11.

  The operation unit 13 includes a keyboard and a mouse, and is used when a user inputs various data and instructions. The display unit 14 is configured by an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence), or the like, and a GUI (for example, a sound source and operation state table input screen or an effect setting screen) when executing the pseudo sound generation processing. Etc.). The operation unit 13 may be a touch panel provided integrally with the display unit 14.

  The communication unit 15 transmits and receives data to and from the server 30 via the Internet 3 and an interface that performs wireless communication such as Bluetooth (registered trademark) or WiFi (wireless LAN) or wired communication, and the Internet 3. Includes network interface to do. The sound output unit 16 is configured by a speaker or the like, and outputs a pseudo sound generated by the pseudo sound generation device 10.

  The pseudo sound generation processing in the pseudo sound generation apparatus 10 will be described with reference to the flowchart of FIG. The pseudo sound generation processing in the present embodiment is realized by the CPU 11 executing a pseudo sound generation application program downloaded in advance to the storage unit 12 and is activated by the user operating the operation unit 13. Is started.

 In this process, it is first determined whether or not to resume the interruption process (S101). Specifically, when the previous pseudo-sound generation process is interrupted, the user is inquired via the display unit 14 as to whether or not the process is to be resumed. Then, the user operates the operation unit 13 to select whether or not to resume the interruption process. If it is determined that the interruption process is to be resumed (S101: YES), the data stored when the previous pseudo sound generation process is interrupted is read from the storage unit 12 (S102). The data in this case includes a sound source, an operation state table, and effect data.

  On the other hand, if it is determined not to resume the interruption process but to perform a new pseudo sound generation process (S101: NO), the process of S102 is skipped, and a new sound source input from the user is received and the storage unit 12 is temporarily stored in the RAM 12 (S103). Here, a sound source serving as a base for the user to reproduce as pseudo engine sound is input. The number of sound sources to be input is not limited to one, and a number of sound sources can be input according to hardware limitations such as the arithmetic processing capability of the pseudo sound creating apparatus 10 and the pseudo sound reproducing apparatus 20.

  FIG. 3 is a diagram illustrating an example of a sound source input in S103. Specifically, an arbitrary part is cut out as a sound source from the waveform shown in FIG. In the present embodiment, a waveform having a length of 20 msec to 1000 msec is cut out as a sound source. Here, the input sound source is repeatedly reproduced as a pseudo engine sound. Therefore, a natural sound can be obtained by approximating the waveform components at the start and end of reproduction as much as possible. Therefore, when cutting out an arbitrary part from the waveform shown in FIG. 3 as a sound source, it is desirable to select a waveform having close waveform components at the start and end of the cut-out part. Specifically, when the waveform in the period indicated by A302 in FIG. 3 is cut out, the waveform components at the start and end are remarkably different. Therefore, when repeated playback is performed, the waveform consistency at the start and end of playback is determined. Can not be removed, causing noise. In this case, it is conceivable to interpolate between waveforms on the program, but there is a possibility that the engine sound unintended by the user is caused by the interpolation. Therefore, it is desirable to cut out the waveform of the period shown in A301 and input it as a sound source so that the start and end waveform components approximate. Therefore, in S103, it is possible to alert the user via the display unit 14 so as to use a waveform that approximates the start and end waveform components as a sound source. Moreover, it is good also as a structure which cuts out automatically the waveform which CPU11 approximates the waveform component of a start and an end from the waveform shown in FIG. 3, and makes it a sound source. In this case, the user can input an appropriate sound source simply by inputting the waveform shown in FIG.

Then, the input of the driving | running state table | surface from a user is received. The input driving state table is associated with the sound source input in S103 and temporarily stored in the RAM of the storage unit 12 (S104). The driving state table is a table for defining the number of driving states corresponding to the effect applied to the sound source. The effect indicates the influence on the waveform of the sound source such as the simultaneous output balance by the volume of the z sound sources as the base, the pitch of each sound source pitch, the specific frequency component filter, and the like. The driving state table is arbitrarily set by the user according to the type of vehicle including the pseudo sound reproduction device 20. An example of the operation state table in the present embodiment is shown in FIG. T in the operating state table is an operating state determined from the motor speed and the accelerator opening. Further, m is a finite integer of 1 or more, and is a numerical value determined according to the number of steps of a signal representing the accelerator opening that can be acquired from the accelerator device of the electric vehicle 2. N is a finite integer of 1 or more, and is a numerical value arbitrarily set by the user. Therefore, T is 1.
It can take any value of ≦ T ≦ m × n. The user can arbitrarily set the effect in the m × n driving states. In addition, when the user inputs z sound sources, it is possible to create up to m × n × z effects. At this time, if the number of m and n is small, the engine sound is poor overall in the amount of change in sound. Further, if the amount of change is increased in a state where the number of m and n is small, the engine sound changes discretely and becomes unnatural sound during reproduction. Therefore, by increasing the number of m and n, it is possible to set a finer effect and create a smoother engine sound. In another embodiment, the storage unit 12 may store several driving state tables corresponding to vehicle types, and any one may be selected by the user. Furthermore, in another implementation mobile phone, a configuration may be adopted in which the driving state table corresponding to the vehicle type is downloaded from the server 30 and input.

  Subsequently, it is determined whether or not the operation unit 13 has been operated by the user (S105). If the operation unit 13 is operated (S105: YES), it is determined whether or not the operation is an effect setting operation (S106). If it is an effect setting operation (S106: YES), the effect is set in each of the operation states T11 to Tmn in the operation state table. Specifically, the setting of the overlapping degree and pitch of each sound source waveform when a plurality of sound sources are input is performed. FIG. 5 is a diagram illustrating an example of an effect setting screen for each driving state. On the effect setting screen, default effect data (various effect parameters for the sound source) for the sound source input in S103 is displayed based on the operation state table input in S104. On the other hand, effect setting (adjustment) is performed by operating the effect data of each operation state T11 to Tmn with the mouse of the operation unit 13 or the like. In FIG. 5, the example in case the effect amount regarding the pitch of the driving | running state T13 is changed is shown.

  Here, the following points are taken into consideration when setting the effect. First, the driving state T11 is a state where both the accelerator opening and the motor rotational speed are the lowest, and the vehicle is idling. T11, T21,. . . T (m−1) 1 and Tm1 are states in which the accelerator opening is increased but the motor rotational speed is low, and the load on the motor such as sudden start and uphill is increased. Also, T11, T12,. . . T1 (n-1), T1n is a state where the accelerator opening is low but the motor speed is high, and the load on the motor, such as coasting where the accelerator is released when the speed is increased, or downhill is low. It is in the tendency state. Further, T11, T22,. . . T (m-1) (n-1), Tmn is proportional to both the accelerator opening and the motor speed, so the load on the motor is constant. The user can make the engine sound more natural by setting the effect on the sound source while understanding these characteristics. When the effect is changed by the user, the display is updated based on the changed effect data. The changed effect data is associated with the sound source and the driving state table, and is temporarily stored in the RAM of the storage unit 12 (S107). Thereafter, the process returns to S105.

  On the other hand, when the operation on the operation unit 13 is not an effect setting operation (S106: NO), it is determined whether or not the operation is a data output operation (S108). The output operation referred to here is an operation performed when all the changes of the effect data in S107 are completed. If the operation is a data output operation (S108: YES), the specification of the data output destination by the user is accepted (S109). In this case, the output destination is a non-volatile storage device of the storage unit 12 or a storage medium such as a USB memory or an SD card. Then, the sound source, the operation state table, and the effect data temporarily stored in the RAM of the storage unit 12 are associated with each other and stored in the designated output destination (S110). At this time, it is also possible to designate the server 30 as an output destination. In this case, the pseudo-sound generation device 10 transmits the sound source, the operation state table, and the effect data stored in the storage unit 12 as one data file to the server 30 via the communication unit 15. At this time, by archiving the data file or by structuring the data expression format using the data description language, the capacity of the data file itself can be reduced and editing by an arbitrary structured text processing program or the like can be facilitated. it can. Thereafter, the process returns to S105.

  When the operation on the operation unit 13 is not a data output operation (S108: NO), it is determined whether or not the operation is a pseudo sound reproduction operation (S111). If it is a pseudo sound reproduction operation (S111: YES), a pseudo engine sound is generated based on the sound source, the operation state table, and the effect data stored in the storage unit 12 (S112). Specifically, the sound source waveform is first converted into digital data in order to absorb differences in the sound source format. Then, based on the effect data corresponding to each driving state (in this case, the temporarily set driving state), an operation for applying the effect to the converted digital data of the sound source is performed, and a pseudo engine sound is generated. The Here, when generating the pseudo engine sound, the waveform at the start and end of the sound source waveform is superimposed using the overlap add method so that the input sound source waveform can be smoothly reproduced even if it is repeatedly reproduced. Since the sound quality changes depending on the amount of time to be overlapped and the amount of difference between the waveforms to be overlapped, it is possible to specify these by the user. Then, the generated pseudo engine sound is output from the sound output unit 16 (S113). Thereby, the user can actually hear and confirm the created pseudo engine sound. It is also possible to change the effect data in S107 while reproducing the pseudo engine sound.

  Further, when the operation on the operation unit 13 is not a pseudo sound reproduction operation (S111: NO), it is determined whether or not the operation is an end operation (S114). If the operation is an end operation (S114: YES), the user is inquired whether to save data (sound source, operation state table, and effect data) currently stored in the RAM of the storage unit 12 (S115). ). If the user wishes to save the data (S115: YES), the data stored in the RAM of the storage unit 12 is stored in the nonvolatile storage device (S116). The data stored here is stored data when the interruption process is resumed in S101. On the other hand, if the data is not stored (S115: NO), S116 is skipped and the process is terminated.

  If the operation on the operation unit is not any of the above operations, other processing according to the operation content is performed (S117), and then the process returns to S105. Other processes include stopping the reproduced pseudo engine sound and volume control.

  Next, with reference to FIG. 1, FIG. 6, and FIG. 7, the configuration of the pseudo sound reproducing device 20 and the pseudo sound reproducing process in the present embodiment will be described. As shown in FIG. 1, the pseudo sound reproduction apparatus 20 includes a CPU 21, a storage unit 22, an operation unit 23, a display unit 24, a communication unit 25, and a sound output unit 26. The CPU 21 communicates with each element included in the pseudo-sound reproduction device 20 and performs overall control of the device. The storage unit 22 includes a RAM, a ROM, and a nonvolatile storage device, and stores various programs and data executed by the pseudo sound reproduction device 20. Various programs stored in the storage unit 22 are executed by the CPU 21.

  The operation unit 23 is configured by touch keys, buttons, and the like, and is used when a user inputs various instructions. The display unit 24 is configured by an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence), or the like, and displays a GUI (for example, a data file change screen) when executing the pseudo sound reproduction process. The operation unit 23 may be a touch panel provided integrally with the display unit 24.

  The communication unit 25 is a network that transmits / receives data to / from the server 30 via the Internet 3 and an interface that performs wireless communication or wired communication such as Bluetooth (registered trademark) or WiFi (wireless LAN). An interface and an interface for acquiring driving state data by connecting to the CAN bus of the electric vehicle 2 are included. The sound output unit 16 includes a speaker or the like, and outputs the pseudo engine sound acquired by the pseudo sound reproduction device 20.

  Next, the pseudo sound reproduction process in the pseudo sound reproduction device 20 will be described with reference to the flowchart of FIG. The pseudo sound reproduction process in the present embodiment is realized by the CPU 21 executing the pseudo sound reproduction application program downloaded in advance to the storage unit 22, and the electric vehicle 2 and the pseudo sound reproduction device 20 are activated. Is started. In another embodiment, the pseudo-sound reproduction device 20 may be set to be activated so as to be interlocked with the ignition switch of the electric vehicle 2.

  In this process, first, operation state data such as the accelerator opening degree of the electric vehicle 2 and the rotational speed of the motor are acquired (S201). Specifically, a signal generated by an accelerator opening detection device and a motor rotation speed detection device (not shown) included in the electric vehicle 2 is acquired via the communication unit 25. Here, in addition to the accelerator opening and the number of revolutions of the motor, as the driving state data, data such as vehicle speed, brake information, battery information, ignition signal, shift information, and gravitational acceleration sensor information when equipment is present It is also possible to obtain.

  Subsequently, a pseudo engine sound is generated based on the accelerator opening and the motor rotation speed acquired in S201 and the data file stored in the storage unit 22 (S202). The data file here includes the sound source of the simulated engine sound to be played, the operation state table, and the effect data. The data file selected at the end of the previous simulated sound playback process or the basic file selected by default For example, a data file. Here, similarly to S112 of the pseudo sound generation process, first, in order to absorb the difference in the format of the sound source, the sound source waveform is converted into digital data. Then, based on the effect data corresponding to the driving state of the vehicle, a calculation for applying an effect to the converted digital data of the sound source is performed, and a pseudo engine sound is generated. Then, the generated pseudo engine sound is output from the sound output unit 26 (S203). As described above, in the pseudo sound reproduction process of the present embodiment, the pseudo engine sound corresponding to the obtained driving state data is generated by calculation in real time, and the pseudo engine sound linked with the driving state of the vehicle while the electric vehicle 2 is running. Is played. The sound output unit 26 of the pseudo sound reproduction device outputs a pseudo engine sound in the electric vehicle 2.

  Here, a technique for avoiding noise when reproducing the pseudo engine sound will be described below with reference to FIG. FIG. 7A shows the time shift of the reproduced pseudo engine sound. In FIG. 7, tx is a program execution time consumed by applying an effect to the sound source in the process of S202, ty is a program execution time for actually reproducing the pseudo engine sound in the process of S203, tz is the reproduction time of the pseudo engine sound in S203. That is, tx and ty are preparation times for reproducing the pseudo engine sound. Therefore, for example, if the user inputs a sound source of tz that satisfies tz <(tx + ty), a time during which the pseudo engine sound is not reproduced occurs from tz to t (z + 1). As a result, the pseudo engine sound is reproduced intermittently. Therefore, by inputting a sound source that has a playback time tz ≧ (tx + ty), the preparation program is completed in t (x + 1) + t (y + 1) time by tk + ty + tz time, and the pseudo engine sound is played back smoothly. be able to.

  On the other hand, in S <b> 201, operation state data such as the accelerator opening degree and the motor rotation speed is acquired from the electric vehicle 2. The timing for obtaining these operating state data is shown in FIG. F701 in FIG. 7B is a time shift in which operation state data acquisition, pseudo engine sound generation and regeneration processing (S202 and S203) are most ideally performed. When the driving state data is acquired at the timing of F701, when the driving state is in the Tab state, the driving state at tx (the program execution time consumed by applying the effect to the sound source) in FIG. Data is acquired. Then, the operation state data of the next T (a + 1) (b + 1) state is acquired at the next t (x + 1) calculation, and the operation state data of the T (a + 2) (b + 2) state is acquired at the next t (x + 2) calculation. Is done. As described above, in the case of F701, the acquisition of the driving state data and the generation and reproduction of the pseudo engine sound are sequentially processed.

  Subsequently, F702 is a case where the operation state data acquisition interval time is longer than the preparation time (tx + ty) for engine sound reproduction. In this case, when the operation state is the Tcd state, the operation state data is acquired at tx. However, when the operating state changes to the T (c + 1) (d + 1) state, t (x + 1) has already ended, so the pseudo engine sound reproduced at t (z + 1) includes T (c + 1) ) The Tcd state operation state data is reflected instead of the operation state data in the (d + 1) state. As a result, a difference between the time when the driving state is acquired and the reproduced pseudo engine sound occurs, and noise is generated. Therefore, if the vehicle characteristics are grasped in advance and the operation state data acquisition interval time is longer than the preparation time (tx + ty) for engine sound reproduction, the start time of the engine sound generation process (that is, the start of tx) Processing is performed to delay the time). Also in this case, the same pseudo engine sound is repeated by the delay amount so that the pseudo engine sound is not reproduced intermittently.

  F703 is a case where the operation state data acquisition time interval is shorter than the preparation time (tx + ty) for engine sound reproduction. In this case, when the operation state is the Tef, T (e + 1) (f + 1) state, the operation state is acquired at tx and t (x + 1), respectively. However, the operation state data in the T (e + 3) (f + 3) state is not acquired at t (x + 2). As described above, since the operating state data cannot be acquired, the engine sound changes from a continuous change to a discrete change amount, and may sound like a noise sound. Therefore, it is desirable that the pseudo-sound reproduction device 20 is designed to have a processing capability that can make tx and ty as short as possible. Alternatively, when the pseudo sound generation device 10 generates the pseudo engine sound, the vehicle characteristic (that is, the acquisition time interval of the driving state data) is acquired from the pseudo sound reproduction device 20 and the acquisition may fail. Know the number of operating state data. Specifically, in the example of F703, there is a possibility that acquisition of a maximum of one operating state data may fail. Then, when the user sets the effect of each driving state for the sound source, the user is alerted to create the effect amount up to the second state, or the effect amount up to the second state It is possible to avoid discontinuous playback sound by automatically correcting the effect data so as to suppress the discrepancy.

  Subsequently, it is determined whether or not the operation unit 23 has been operated by the user (S204). Here, when there is an operation on the operation unit 23 (S204: YES), it is determined whether or not the operation is an end operation (S205). Here, if it is an end operation (S205: YES), the output of the pseudo engine sound is stopped (S206), and this process ends.

  On the other hand, when the operation is not an end operation (S205: NO), it is determined whether or not the electric vehicle 2 is stopped (S207). If the electric vehicle 2 has not stopped (S207: NO), the process returns to S201 without following the operation of the operation unit 13. On the other hand, when the electric vehicle 2 is stopped (S207: YES), it is determined whether or not the operation is a data file change (S208). As described above, in this embodiment, as in a general car navigation system, the data file can be changed or acquired only when the vehicle body is stopped. In another embodiment, the determination in S207 can be omitted.

  If the operation is a data file change (S208: YES), a list of data files stored in the storage unit 22 is displayed on the display unit 24 (S209). Then, the change of the data file by the user is accepted (S210), and the changed data file is set as a data file to be reproduced (S211). Thereafter, the process returns to S201.

  On the other hand, if the operation is not a data file change (S208: NO), it is determined whether or not the operation is acquisition of a new data file (S212). If the operation is acquisition of a new data file (S212: YES), the input of the acquisition destination by the user is accepted (S213). The acquisition source in this case is the pseudo-sound generation device 10 capable of wireless or wired communication or the server 30 connected via the Internet. Then, the connection to the acquisition source input by the user is made (S214). For example, when the server 30 is selected, a connection request to the Internet is made. In this case, the connection status may be displayed on the display unit 24 so that it can be confirmed. When the pseudo sound generation device 10 is selected, for example, by establishing a wireless connection by pairing with Bluetooth (registered trademark), or by performing physical connection and communication permission such as wiring with the pseudo sound generation device 10 Establish a wired connection.

  When the connection with the server 30 or the pseudo sound generation device 10 is completed, a data file is acquired from the server 30 or the pseudo sound generation device 10 (S215). Specifically, in response to a request from the simulated sound reproduction device 20, the simulated sound generation device 10 sets the communication unit 15 as a single data file including the sound source, the operation state table, and the effect data stored in the storage unit 12. To the pseudo-sound reproduction device 20. At this time, the data file is archived or the data representation format is structured by the data description language. In addition, the server 30 also receives a request from the pseudo sound reproduction device 20 and receives a data file composed of a sound source, an operation state table, and effect data acquired from the pseudo sound generation device 10 or another server or terminal. Send to. In another embodiment, the data file can be downloaded by directly specifying the URI of the target data file in the operation unit 23. The acquired data file is appropriately decompressed or analyzed and stored in the storage unit 22 (S216). Thereafter, the process returns to S201. The pseudo sound reproduction device 20 acquires a data file directly from a storage medium such as a USB memory or an SD card in which the data file is stored, or acquires a data file from the server 30 via a communication terminal such as a smartphone. It is also possible to do.

  If the operation is not acquisition of a new data file (S212: NO), it is determined whether or not the operation is deletion of a data file (S217). If the operation is deletion of a data file (S217: YES), a list of data files stored in the storage unit 22 is displayed on the display unit 24 (S218). Then, selection of a data file to be deleted by the user is accepted (S219), and the selected data file is deleted from the storage unit 22 (S220). Thereafter, the process returns to S201. With such a configuration, when the storage area of the storage unit 22 is insufficient, an unnecessary data file can be deleted and a new data file can be acquired.

  Furthermore, when the operation on the operation unit 23 is not any of the above operations, other processing according to the operation content is performed (S221), and then the process returns to S201. Other processing includes volume control of engine sound that is operated when a user makes a call on a mobile phone or a conversation with a passenger. With this configuration, in conventional gasoline automobiles, there is a problem that the conversation with the passenger or the call at the mobile telephone terminal is hindered by the engine sound, but this can be solved. .

  As described above, in the pseudo sound providing system 1 according to the present embodiment, the user can use not only the existing engine sound but also any other sound (for example, musical instrument sound, electronically synthesized sound, movie, TV, radio, etc.). Etc., sounds of living things, biological sounds, etc.) can be freely used as sound sources. In addition, the user can freely set the effect applied to the sound source and the operation state table. Therefore, it is possible to reproduce a sound according to a user's request as a pseudo engine sound. Accordingly, it is possible to provide a system with a high degree of freedom and convenience, and it is possible to provide comfort for many users.

  Further, the pseudo sound reproduction device 20 can acquire the pseudo engine sound generated by the pseudo sound generation device 10 via the server 30. Therefore, it is possible to freely obtain the pseudo engine sound at any time using the Internet communication even if the storage medium is not nearby. Furthermore, it is also possible to transmit the driving state data of the electric vehicle 2 to the server 30 via the communication unit 25, which enables big data to be used in the development of new vehicles and services for members to the cloud. Accumulation is also possible.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments and can be modified in various ranges. For example, the present embodiment relates to the generation of a pseudo engine sound that is played back by an electric vehicle, but the present invention is not limited to this, but a TV game, a PC game, a game for a smartphone, a radio control, and driving. This can be applied to software such as a simulator that produces a pseudo engine sound, or in a situation where you want to set your favorite engine sound. Further, the pseudo sound generated / reproduced in the present invention is not limited to the engine sound, and for example, the pseudo sound of the sound corresponding to the driving state of the other electric vehicle 2 such as the brake sound and the horn sound is generated and generated. It is also possible to reproduce.

  Further, in the pseudo sound reproduction process in the above embodiment, the output of the pseudo engine sound is stopped when an end operation is performed, but the present invention is not limited to this. For example, when the battery level of the electric vehicle is remarkably reduced, a function of canceling the generation of the pseudo engine sound in order to give the highest priority to the operation or urging the user to cancel may be provided. At that time, before the cancellation, the display unit 24 visually notifies the user of the pseudo engine sound reproduction stop, or from the sound output unit 26 audibly notifies the user of the pseudo engine sound reproduction stop. May be performed. By having such a configuration, when the battery is low, it is possible to prevent the disadvantage of hindering the running of the vehicle itself by draining the battery for reproduction of the pseudo engine sound, and urge the user to pay attention to the battery low Benefits can also be obtained.

  In the above embodiment, the display unit 24 and the sound output unit 26 included in the pseudo sound reproduction device 20 are configured to display the operation screen and reproduce the pseudo engine sound. However, the present invention is not limited to this. It is also possible to use the display of the car navigation system provided in the electric vehicle 2 and the in-vehicle speaker as the display unit 24 and the sound output unit 26. In this case, the pseudo sound reproducing device 20 can omit the display unit 24 and the sound output unit 26. Furthermore, it is also possible to store and execute a pseudo sound reproduction processing program in the CPU of the car navigation system provided in the electric vehicle 2. In this case, the display, touch panel, and in-vehicle speaker of the car navigation system can be used as the display unit, the operation unit, and the sound output unit, respectively, without mounting the pseudo sound reproduction device 20 in the electric vehicle 2.

  Moreover, in the said embodiment, although it was set as the structure which inputs a driving | running state table | surface in the pseudo | simulation sound production | generation apparatus 10, and outputs it to the pseudo | simulation sound reproduction apparatus 20 as a part of data file, it is not limited to this. The driving state table corresponding to the vehicle type of the electric vehicle 2 may be stored in advance in the pseudo sound reproduction device 20.

  Furthermore, in the above-described embodiment, the pseudo sound generation process and the pseudo sound reproduction process are realized by executing programs in the CPUs included in the pseudo sound generation apparatus 10 and the pseudo sound reproduction apparatus 20, respectively. Alternatively, all or part of each functional unit may be mounted as an ASIC (Application Specific Integrated Circuit) in the pseudo-sound reproduction device 20 and realized by hardware using the ASIC.

DESCRIPTION OF SYMBOLS 1 Pseudo sound provision system 2 Electric vehicle 10 Pseudo sound generator 11, 21 CPU
12, 22 Storage unit 13, 23 Operation unit 14, 24 Display unit 15, 25 Communication unit 16, 26 Sound output unit 20 Pseudo sound reproduction device 30 Server

Claims (11)

A pseudo sound providing system for providing a pseudo sound according to a driving state of a vehicle, the pseudo sound providing system comprising a pseudo sound generating device and a pseudo sound reproducing device,
The pseudo-sound generator is
A sound source input means for receiving input of an arbitrary sound source by a user;
Effect data relating to effects that affect the sound source in accordance with the driving state of the vehicle, effect setting means for receiving setting of arbitrary effect data by the user;
Storage means for storing the sound source and the effect data,
The pseudo-sound player is
Sound source data acquisition means for acquiring the sound source and effect data;
Driving state data acquisition means for acquiring driving state data relating to the driving state of the vehicle;
Applying an effect based on the effect data corresponding to the driving state data to the sound source, and generating a pseudo sound to generate a pseudo sound,
A pseudo sound providing system comprising: a pseudo sound reproducing means for reproducing the generated pseudo sound. The pseudo sound is an engine sound of the vehicle,
The simulated sound providing system according to claim 1, wherein the driving state data includes an accelerator opening degree and a motor rotation speed of the vehicle. The pseudo-sound generator is
Applying an effect based on the effect data to the sound source, and generating a pseudo sound to generate a pseudo sound,
The pseudo sound providing system according to claim 1, further comprising pseudo sound reproduction means for reproducing the generated pseudo sound. The pseudo-sound generator further includes an operation state table input unit that receives an input of an arbitrary operation state table by a user,
The driving state table defines the number of driving states corresponding to effects that affect the sound source,
The pseudo sound providing system according to any one of claims 1 to 3, wherein the sound source data acquiring unit further acquires the operation state table.   5. The pseudo sound providing system according to claim 1, wherein the sound source data acquisition unit directly acquires the sound source and effect data from the pseudo sound generation device. The pseudo sound providing system further includes a server connected to the pseudo sound generating device and the pseudo sound reproducing device via the Internet,
The pseudo sound providing system according to any one of claims 1 to 4, wherein the sound source data acquiring unit acquires the sound source and effect data via the server. A pseudo sound generating device for generating a pseudo sound according to a driving state of a vehicle,
A sound source input means for receiving input of an arbitrary sound source by a user;
Effect data relating to effects that affect the sound source in accordance with the driving state of the vehicle, effect setting means for receiving setting of arbitrary effect data by the user;
A pseudo-sound generating device comprising: storage means for storing the sound source and effect data. A pseudo sound reproduction device for reproducing a pseudo sound according to a driving state of a vehicle,
Sound source data acquisition means for acquiring effect data relating to an effect applied to the sound source according to an arbitrary sound source and the driving state of the vehicle;
Driving state data acquisition means for acquiring driving state data relating to the driving state of the vehicle;
Applying an effect based on the effect data corresponding to the driving state data to the sound source, and generating a pseudo sound to generate a pseudo sound,
A pseudo-sound reproduction device comprising: pseudo-sound reproduction means for reproducing the generated pseudo sound. A pseudo sound providing method for providing a pseudo sound according to a driving state of a vehicle,
A sound source input step for accepting input of an arbitrary sound source by a user;
Effect data relating to effects to be applied to the sound source according to the driving state of the vehicle, an effect setting step for accepting setting of arbitrary effect data by the user;
Storing the sound source and effect data;
A sound source data acquisition step for acquiring the sound source and effect data;
Driving state data acquisition step for acquiring driving state data related to the driving state of the vehicle;
Applying an effect based on the effect data corresponding to the driving state data to the sound source, and generating a pseudo sound to generate a pseudo sound,
And a pseudo sound reproduction step of reproducing the generated pseudo sound. A pseudo sound generation program for generating a pseudo sound according to the driving state of the vehicle, the control unit provided in the pseudo sound generation device,
A sound source input step for accepting input of an arbitrary sound source by a user;
Effect data relating to effects to be applied to the sound source according to the driving state of the vehicle, an effect setting step for accepting setting of arbitrary effect data by the user;
A storage step of storing the sound source and the effect data in a storage unit included in the pseudo sound generation device;
A pseudo-sound generation program that executes A pseudo sound reproduction program for reproducing a pseudo sound according to the driving state of the vehicle, the control unit provided in the pseudo sound reproduction device,
A sound source data acquisition step for acquiring effect data relating to an effect applied to the sound source according to an arbitrary sound source and the driving state of the vehicle;
Driving state data acquisition step for acquiring driving state data related to the driving state of the vehicle;
Applying an effect based on the effect data corresponding to the driving state data to the sound source, and generating a pseudo sound to generate a pseudo sound,
A pseudo sound reproduction program for executing the pseudo sound reproduction step of reproducing the generated pseudo sound.

Images