JP4797960B2 - Musical sound reproducing device for vehicle, musical sound reproducing method for vehicle, and program - Google Patents

Description

  The present invention relates to a vehicular musical sound reproducing device, a vehicular musical sound reproducing method, and a program.

  2. Description of the Related Art Conventionally, a musical sound reproducing device for a vehicle that reproduces music while the vehicle is running and controls its reproduction parameters (volume etc.) according to the state of the vehicle itself is known. For example, Patent Document 1 discloses a vehicular musical sound reproducing apparatus that changes the volume, tone, or tempo in accordance with the engine speed. Japanese Patent Application Laid-Open No. 2004-228561 discloses a musical tone reproducing apparatus for a vehicle that changes a tone color, a volume, a pitch, or a musical tone effect according to the operation amounts of a handle and an accelerator pedal.

Patent Document 3 discloses a vehicular musical sound reproducing apparatus that reproduces music that matches a traveling environment (congested road, highway, specific position or area, weather, etc.) while the vehicle is traveling.
JP 2003-309891 A (Claim 2) JP 2004-51081 A (paragraph 0023) Japanese Unexamined Patent Publication No. 2003-150176 (Abstract)

  However, even if the playback parameter is changed according to the vehicle state by the above-described conventional technology, the music to be played may become unnatural. Hereinafter, a specific example will be described.

  For example, let us consider a case where the reproduction parameter is made different between high-speed traveling and low-speed traveling. In this case, according to the above prior art, the vehicular musical sound reproducing apparatus changes the reproduction parameter in accordance with the vehicle speed. Specifically, a regeneration parameter setting value (vehicle speed setting value) with respect to the vehicle speed is determined in advance, and the vehicle sound reproduction device controls the regeneration parameter so that the vehicle speed setting value for the current vehicle speed is obtained. .

  However, the concept of high speed and low speed is subjective, and in general, the driving environment greatly affects the determination criteria. For example, on ordinary roads with a speed limit of 50 km / h, many people feel that it is fast if they run at speeds of 40 km / h or more, but on highways with a speed limit of 100 km / h, many people run at 80 km / h. I feel it is slow. On the other hand, when the regeneration parameter value for the vehicle speed is determined in advance as described above, the regeneration parameter for each vehicle speed is determined after determining whether each vehicle speed is low speed or high speed. It is necessary to keep. For this reason, it cannot cope with the difference in the judgment criteria depending on the traveling environment, and the music to be played becomes unnatural depending on the traveling environment.

  Accordingly, one of the objects of the present invention is a vehicle for preventing music to be reproduced from becoming unnatural due to a difference in traveling environment when music reproduction parameters are changed according to the vehicle state. The object is to provide a musical tone reproducing apparatus, a musical tone reproducing method for a vehicle, and a program.

In order to solve the above problems, a musical sound reproducing device for a vehicle according to the present invention includes speed information acquisition means for acquiring vehicle speed information, and travel environment information acquisition means for acquiring travel environment information indicating the travel environment of the vehicle. Music data storage means for storing music data; music playback means for playing back the music data; and the music playback means based on speed limit information among the traveling environment information acquired by the traveling environment information acquisition means. a setting value information controlling means for controlling the setting value information indicating a setting value for the speed information of the vehicle tempo during song playback by, and the setting value information after control by the setting value information controlling means, said speed information obtaining and the velocity information acquired by the means, based on, characterized in that it comprises a tempo control means for controlling the tempo.
According to this, since the reproduction parameter is controlled based on both the vehicle state information and the traveling environment information, when the music reproduction parameter is changed according to the traveling state, the music to be reproduced due to the difference in the traveling environment is obtained. It is prevented from becoming unnatural.

Further, in each of the above-described vehicle sound reproduction devices, the music data storage means stores a plurality of music data, and the vehicle music reproduction device is based on the travel environment information acquired by the travel environment information acquisition means. Selection means for selecting at least one piece of music data to be played back by the music playback means from among a plurality of music data stored by the music data storage means, wherein the music playback means is selected by the selection means It is also possible to play back at least one piece of music data.
According to this, music data suitable for the traveling environment can be reproduced.

According to the present invention, there is provided a method for reproducing a musical tone for a vehicle, a speed information acquiring step for acquiring vehicle speed information, a driving environment information acquiring step for acquiring driving environment information indicating a driving environment of the vehicle, and reproducing music data. shows the music reproduction step, on the basis of the speed limit information of the travel environment information acquired in the travel environment information acquisition step, a set value for the speed information of the vehicle tempo during song playback in the music playback step of a setting value information controlling step of controlling the setting value information, and the setting value information after the control in the setting value information controlling step, and the velocity information acquired at said velocity information acquisition step, based on, the tempo And a tempo control step for controlling.

A program according to the present invention includes a speed information acquisition unit that acquires vehicle speed information, a travel environment information acquisition unit that acquires travel environment information indicating the travel environment of the vehicle, a music playback unit that plays back music data, Setting for controlling setting value information indicating a setting value for the speed information of the vehicle of the tempo at the time of music playback by the music playback means based on speed limit information among the travel environment information acquired by the travel environment information acquisition means value information control means, and said set value information after control by the setting value information controlling means, said speed information acquired by the velocity information acquiring means, based on the tempo control means for controlling the tempo, as It is a program for causing a computer to function.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a system configuration and functional blocks of a vehicular musical sound reproducing apparatus 1 according to the present embodiment. As shown in the figure, the vehicular musical sound reproducing apparatus 1 includes a traveling environment information acquisition unit 10, a vehicle state information acquisition unit 20, a selection unit 30, a music data storage unit 40, a control unit 50, a set value information storage unit 60, a music piece. A reproduction unit 70 and a user setting reception unit 80 are included. Among these, the control unit 50 includes a set value information control unit 51 and a reproduction parameter control unit 52 therein.

  The vehicular musical sound reproducing device 1 is installed in a vehicle (not shown) and reproduces music data. The musical sound reproducing device 1 for a vehicle stores setting value information indicating a setting value of a reproduction parameter for a vehicle state, detects the vehicle state, controls the reproduction parameter based on the detected setting value for the vehicle state, The set value information is controlled according to the driving environment. Hereinafter, functions of the above-described units for realizing this control will be described in detail.

  The vehicle state information acquisition unit 20 acquires vehicle state information indicating the state of the vehicle and outputs the vehicle state information to the control unit 50. In a specific example, the vehicle state information acquisition unit 20 includes various sensors 90 (specifically, a vehicle speed sensor, an engine speed sensor, an accelerator opening sensor, a brake opening sensor, a gear side, and the like mounted on the vehicle. The vehicle state information including the information detected by these sensors is acquired and output to the control unit 50.

  Specifically, the vehicle speed sensor detects the traveling speed (vehicle speed) of the vehicle. The engine speed sensor detects the engine speed. The accelerator opening sensor detects the accelerator opening (the degree of depression). The brake opening sensor detects the brake opening (the degree of depression). The gear / side brake sensor detects the current value of the gear ratio and the degree of engagement of the side brake. Then, the vehicle state information acquisition unit 20 acquires vehicle state information including information detected by the various sensors 90 as described above, and outputs the vehicle state information to the control unit 50.

  The travel environment information acquisition unit 10 acquires travel environment information indicating the travel environment of the vehicle and outputs the travel environment information to the selection unit 30 and the control unit 50. In a specific example, the traveling environment information acquisition unit 10 is connected to an ITS (Intelligent Transport System) 91 and a GPS (Global Positioning System) 92. Specifically, the ITS 91 receives various information (weather information, traffic jam information, speed limit information, road surface information, area information, time information (including date)) from the center device (not shown). The travel environment information acquisition unit 10 acquires these pieces of information received by the ITS 91 as part of the travel environment information. The GPS 92 receives a radio signal including time data transmitted by a plurality of GPS satellites, calculates a difference in distance from each GPS satellite based on the arrival time difference of the received radio waves, and uses the principle of triangulation to The position of the vehicle is specified, and the travel environment information acquisition unit 10 acquires position information (latitude and longitude information) indicating the position specified by the GPS 92 as another part of the travel environment information. The travel environment information acquisition unit 10 outputs the travel environment information acquired in this way to the selection unit 30 and the control unit 50.

  The music data storage unit 40 stores one or a plurality of music data. The music playback unit 70 plays back the music data stored in the music data storage unit 40.

  The user setting accepting unit 80 accepts input by the user of music data to be stored in the music data storage unit 40 via a recording medium (not shown). Then, the received music data is written into the music data storage unit 40. In addition, the user setting receiving unit 80 receives selection input of music data to be played back by the music playback unit 70, and outputs music data information indicating the music data selected by the user to the selection unit 30.

  The selection unit 30 selects one or a plurality of music data from the music data storage unit 40 based on the driving environment information input from the driving environment information acquisition unit 10. However, when the music data information is input from the user setting reception unit 80, the music data indicated by the music data information is selected from the music data storage unit 40. The selection unit 30 assigns each piece of music data selected as described above to one or a plurality of tracks that the music reproduction unit 70 has. The music playback unit 70 reads the music data assigned to the track from the music data storage unit 40 and plays it back.

  FIG. 2 is a diagram for explaining the processing of the selection unit 30 more specifically. As shown in the figure, the selection unit 30 includes a running environment analysis unit 31 and a genre / playlist selection unit 32 therein.

  The driving environment analysis unit 31 analyzes the driving environment information acquired by the driving environment information acquisition unit 10 and extracts specific information included in the driving environment information. For example, weather information, traffic jam information, speed limit information, road surface status information, area information, time information (including date), position information, and the like are extracted.

  The music data storage unit 40 stores a genre (music genre such as classic or pop) to which each music data to be stored belongs. In addition, a playlist including a plurality of music data determined in advance by the user is stored. The genre / playlist selection unit 32 selects a genre or a playlist based on each piece of information extracted by the traveling environment analysis unit 31. When a genre is selected, music data belonging to the genre is sequentially selected by a predetermined method (for example, random) and sequentially written on the track. On the other hand, when a playlist is selected, music data included in the playlist is sequentially selected and sequentially written on the tracks.

  In a more specific example, a table that associates combinations of information extracted by the traveling environment analysis unit 31 with genres or playlists is stored in the music data storage unit 40. The genre / playlist selection unit 32 selects a genre or a playlist by reading out a genre or a playlist stored in association with a combination of information extracted by the traveling environment analysis unit 31 from the table.

  Next, in FIG. 1, the control unit 50 acquires the playback parameters at the time of music playback by the music playback unit 70 by the vehicle state information acquired by the vehicle state information acquisition unit 20 and the traveling environment information acquisition unit 10. Control based on driving environment information.

  More specifically, the set value information control unit 51 controls set value information indicating a set value of a reproduction parameter for the vehicle state information based on the travel environment information acquired by the travel environment information acquisition unit 10. Further, the reproduction parameter control unit 52 reproduces the music by the music reproduction unit 70 based on the setting value information after the control by the setting value information control unit 51 and the vehicle state information acquired by the vehicle state information acquisition unit 20. Control the playback parameters of the hour.

  In a more specific example, the set value information storage unit 60 stores set value information indicating a set value of a reproduction parameter for vehicle state information. The set value information control unit 51 reads the set value information from the set value information storage unit 60 and changes at least a part of the read set value information based on the travel environment information acquired by the travel environment information acquisition unit 10. Thus, the set value information indicating the set value of the reproduction parameter for the vehicle state information is controlled based on the travel environment information.

  In another example, the set value information storage unit 60 stores travel environment information and set value information in association with each other. The set value information control unit 51 reads the set value information stored in association with the travel environment information acquired by the travel environment information acquisition unit 10 from the set value information storage unit 60 and causes the reproduction parameter control unit 52 to use the set value information. Thus, the set value information indicating the set value of the reproduction parameter for the vehicle state information is controlled based on the travel environment information.

  FIG. 3 is a diagram for more specifically explaining the processing of the control unit 50. As shown in the figure, the control unit 50 further includes a rhythm pattern control unit 53, a melody pattern control unit 54, a tempo control unit 55, a tone color control unit 56, an effect control unit 57, a volume control unit 58, and a vehicle state analysis unit 59. It is comprised including. The set value information control unit 51 includes a running environment analysis unit 511 and a set value information setting unit 512 therein, and includes a rhythm pattern control unit 53, a melody pattern control unit 54, a tempo control unit 55, a timbre control. Each control unit of the unit 56, the effect control unit 57, and the volume control unit 58 constitutes a reproduction parameter control unit 52.

  The driving environment analysis unit 511 analyzes the driving environment information acquired by the driving environment information acquisition unit 10 and extracts specific information included in the driving environment information. For example, weather information, traffic jam information, speed limit information, road surface status information, area information, time information (including date), position information, and the like are extracted.

  The set value information setting unit 512 reads the set value information of the reproduction parameter for the vehicle state information from the set value information storage unit 60, and at least a part of the set value information setting unit 512 is based on the information extracted by the travel environment analysis unit 511. change. Alternatively, the setting value information stored in association with each information extracted by the traveling environment analysis unit 511 is read from the setting value information storage unit 60. Then, the obtained set value information is set in each control unit of the rhythm pattern control unit 53, the melody pattern control unit 54, the tempo control unit 55, the tone color control unit 56, the effect control unit 57, and the volume control unit 58.

  The vehicle state analysis unit 59 analyzes the vehicle state information acquired by the vehicle state information acquisition unit 20 and extracts specific information included in the vehicle state information. For example, vehicle speed, engine speed, accelerator opening, brake opening, gear ratio, side brake engagement, and the like are extracted. The extracted information is output to the control units of the rhythm pattern control unit 53, the melody pattern control unit 54, the tempo control unit 55, the timbre control unit 56, the effect control unit 57, and the volume control unit 58. Each control unit controls the reproduction parameter according to the set value information set by the set value information setting unit 512 and each information input from the vehicle state analysis unit 59.

  Specifically, the rhythm pattern control unit 53 displays the rhythm pattern of the music data reproduced by the music reproduction unit 70, and the melody pattern control unit 54 displays the melody pattern of the music data reproduced by the music reproduction unit 70, the tempo control unit. 55 represents the tempo of the music data reproduced by the music reproduction unit 70, the tone color control unit 56 represents the tone color of the music data reproduced by the music reproduction unit 70, and the effect control unit 57 represents the music data reproduced by the music reproduction unit 70. The volume control unit 58 controls the volume of the music data reproduced by the music reproduction unit 70 according to the set value.

  Each of FIGS. 4 to 10 is a diagram for describing a specific example of processing performed by the set value information setting unit 512. FIG. Hereinafter, a specific example of processing performed by the setting value information setting unit 512 will be described with reference to the drawings.

  FIG. 4 is a diagram regarding tempo setting value information and speed limit information with respect to the vehicle speed. In the example shown in the figure, the set value information of the tempo with respect to the vehicle speed stored by the set value information storage unit 60 is 100 bpm (beats per minute) when the vehicle speed is less than Vkm / h, and the vehicle speed is Vkm / h or more and V + 20 km. When the vehicle speed is less than / h, the vehicle speed is + (100-V) bpm, and when the vehicle speed is V + 20 km / h or more, the speed is 120 bpm.

  The set value information setting unit 512 changes and controls the above Vkm / h (tempo increase start vehicle speed) based on the speed limit information extracted by the travel environment analysis unit 511. Specifically, if the speed limit indicated by the speed limit information is 60 km / h, V = 20. When the speed limit indicated by the speed limit information is 100 km / h, V = 60. As a result of such control, when the speed limit indicated by the speed limit information is 60 km / h, the tempo from the vehicle speed of 20 km / h is 100 bpm, and the tempo from the vehicle speed of 20 km / h to the vehicle speed of 40 km / h is the vehicle speed +80 bpm. The tempo from the vehicle speed of 40 km / h to the vehicle speed of 60 km / h is 120 bpm (graph A1 in FIG. 4). On the other hand, when the speed limit indicated by the speed limit information is 100 km / h, the tempo from the vehicle speed of 60 km / h is 100 bpm, the tempo from the vehicle speed of 60 km / h to the vehicle speed of 80 km / h is the vehicle speed +40 bpm, and the vehicle speed is 80 km / h. To 120 km / h is 120 bpm (graph A2 in FIG. 4).

FIG. 5 is a diagram relating to volume setting value information with respect to vehicle speed and speed limit information. In the example shown in the figure, the music reproduction unit 70 reproduces music data stored in a plurality of tracks (here, five tracks from tracks B1 to B5), and the control unit 50 reproduces each track. This is an example in the case where the volume of each is independently controlled. In this example, the set value information of the volume with respect to the vehicle speed stored by the set value information storage unit 60 is indicated by a change function of the volume for each track Bn (n = 1 to 5). In one example, the change function has a predetermined vehicle speed of Ve ₀ and Ve ₁ and a maximum volume value of Vo _max , where Ve ₀ ≦ vehicle speed <Ve ₁ (−4 Vo _max / (Ve ₀ −Ve ₁ ² ) × (Vehicle speed− (Ve ₀ + Ve ₁ ) / 2) ² + Vo _max , vehicle speed <Ve ₀ and Ve ₁ ≦ vehicle speed is a function that is 0.

The set value information setting unit 512 controls the change function for each track based on the speed limit information extracted by the traveling environment analysis unit 511. For example, in the above example, Ve ₀ and Ve ₁ are changed and controlled for each track. FIG. 5 shows solid volume setting value information when the speed limit indicated by the speed limit information is 60 km / h, and volume setting value information when the speed limit indicated by the speed limit information is 100 km / h. Are indicated by dotted lines, respectively. As a result of the control as described above, the latter is obtained by shifting the former little by little to the right side (high speed side) of the drawing.

FIG. 6 is a diagram relating to volume setting value information with respect to vehicle speed, weather information, and time information. In the example shown in the figure, the volume setting value information with respect to the vehicle speed stored by the setting value information storage unit 60 is indicated by a change function with the vehicle speed as a variable. In the example, the change function is log _β (vehicle speed + α) + γ. Where α and β are positive constants and γ is a variable.

  The set value information setting unit 512 controls the change function based on weather information and time information extracted by the traveling environment analysis unit 511. For example, in the above example, the variable γ is changed and controlled based on weather information and time information. The graph C1 shown in FIG. 6 is when the weather is raining and the time is 5 pm, the graph C2 is when the weather is sunny and the time is 2 pm, and the graph C3 is sunny and the time is The graph at 11 pm is shown. As a result of the control as described above, each graph is slightly shifted in the volume axis direction.

FIG. 7 is a diagram regarding volume setting value information with respect to vehicle speed, area information, and time information. In the example shown in the figure, the volume setting value information with respect to the vehicle speed stored by the setting value information storage unit 60 is indicated by a change function with the vehicle speed as a variable. In the example, the change function is log _β (vehicle speed + α) + γ. Where α and β are positive constants and γ is a variable.

  The set value information setting unit 512 controls the change function based on the area information and time information extracted by the traveling environment analysis unit 511. For example, in the above example, the variable γ is changed and controlled based on the area information and the time information. The graph D1 shown in FIG. 7 is when the current location is an urban area and the time is 2 pm, the graph D2 is when the current location is a residential area and the time is 2 pm, and the graph D3 is the current location is a residential area. Each time is 11 pm, and as a result of the control as described above, each graph is slightly shifted in the volume axis direction.

  FIG. 8 is a diagram relating to the setting value information of the waveform reproduction length with respect to the engine speed and the road surface condition information. In the example shown in the figure, the music data stored in the music data storage unit 40 is music data of a certain length (music data length), and even if only a part of the music data is repeatedly reproduced, an unnatural sound may be produced. And a sound that can be felt by the listener as if the playback speed has changed according to the length of the portion to be repeatedly played (waveform playback length). In this example, the setting value information of the waveform reproduction length with respect to the engine speed stored by the setting value information storage unit 60 is 100% of the music data length when the engine speed is less than 1000 + Rrpm (rounds per minute), the engine 75% of the music data length when the rotation speed is 1000 + Rrpm or more and less than 1500 + Rrpm, 50% of the music data length when the engine rotation speed is 1500 + Rrpm or more and less than 3000 + Rrpm, and the music data length when the engine rotation speed is 3000 + Rrpm or more Of 25%.

  The set value information setting unit 512 controls to change the above Rrpm (offset amount of the engine speed) based on the road surface condition information extracted by the traveling environment analysis unit 511. Specifically, R = 0 is set when the road surface information indicates that the road has less undulations. Further, when the road surface information indicates that the road has many undulations, R = 1000. As a result of such control, when the road surface condition information indicates that there is little undulation on the road, the waveform reproduction length from the engine speed of 1000 rpm is 100%, and the waveform reproduction from the engine speed of 1000 rpm to the engine speed of 1500 rpm is repeated. The growth rate is 75%, the waveform regeneration length from the engine speed of 1500 rpm to the engine speed of 3000 rpm is 50%, and the waveform regeneration length of the engine speed of 3000 rpm or more is 25% (graph E1 in FIG. 8). On the other hand, if the road surface information indicates that the road has many undulations, the waveform regeneration length from the engine speed of 2000 rpm to 100% is 100%, the waveform regeneration length from the engine speed of 2000 rpm to the engine speed of 2500 rpm is 75%, The waveform regeneration length from the engine speed 2500 rpm to the engine speed 4000 rpm is 50%, and the waveform regeneration length at the engine speed 4000 rpm or more is 25% (graph E2 in FIG. 8).

  FIG. 9 is a diagram relating to volume setting value information and traffic jam information with respect to the brake opening. In the example shown in the figure, the volume setting value information with respect to the brake opening stored by the setting value information storage unit 60 is indicated by a change function with the brake opening as a variable.

  The set value information setting unit 512 controls the change function based on the traffic jam information extracted by the traveling environment analysis unit 511. Here, different setting value information (change function) is stored in the setting value information storage unit 60 in association with the contents of the traffic jam information, and the setting value information setting unit 512 is extracted by the traveling environment analysis unit 511. The change function is controlled by reading set value information corresponding to traffic jam information.

  A graph F1 shown in FIG. 9 shows a case during steady running (no traffic jam), a graph F2 shows a case during regulation due to construction, etc., and a graph F3 shows a case during traffic jam. As a result of the control as described above, each graph shows different changes with respect to the brake opening.

  FIG. 10 is a diagram regarding effect level setting value information and road surface condition information with respect to vehicle speed. In the example shown in the figure, the setting value information of the effect level with respect to the vehicle speed stored by the setting value information storage unit 60 is indicated by a change function with the vehicle speed as a variable. In the example, the change function is a linear function of the vehicle speed.

  The set value information setting unit 512 controls the change function based on the road surface condition information extracted by the traveling environment analysis unit 511. For example, in the above example, the slope of the linear function is changed and controlled based on the road surface condition information. The graph G1 shown in FIG. 10 is when the road surface condition is “dry”, the graph G2 is when the road surface condition is “slip due to rain”, and the graph G3 is the road surface condition “slip due to freezing”. Each of the graphs shows a case where it is “Caution”. As a result of the control as described above, each graph has a slightly different slope.

  The processing of the above-described musical tone reproduction device 1 for a vehicle will be described again in more detail with reference to the processing flow.

  FIG. 11 is a diagram showing a processing flow of the vehicular musical sound reproducing device 1. As shown in the figure, when the musical tone reproducing apparatus 1 for a vehicle is supplied with power and started, first, the driving environment information acquisition unit 10 acquires driving environment information (S1). And after starting, while determining whether it is the first acquisition, the music data which should be reproduced are selected based on the acquired driving environment information. The vehicular musical sound reproducing apparatus 1 further determines whether or not the music data to be reproduced is different from the music data being reproduced (that is, whether or not the music data to be reproduced needs to be changed) (S2).

  In S2, when it is determined that the acquisition is the first after the start or when it is determined that the music data to be played is different from the music data currently being played, the vehicular musical sound playback device 1 tracks the selected music data as a track. (S3). On the other hand, if it is determined in S2 that it is not the first acquisition after activation, and it is determined that the music data to be reproduced is not different from the music data currently being reproduced, the vehicular musical sound reproducing device 1 does not perform the process of S3. .

  Next, the musical sound reproducing device 1 for a vehicle determines again whether or not the acquisition of the travel environment information in S1 is the first acquisition after activation, and determines the set value information based on the acquired travel environment information. . Then, the determined set value information is currently set in each control unit of the rhythm pattern control unit 53, the melody pattern control unit 54, the tempo control unit 55, the tone color control unit 56, the effect control unit 57, and the volume control unit 58. It is determined whether or not it is different (that is, whether or not the setting value information needs to be changed) (S4).

  In S4, when it is determined that the acquisition is the first acquisition after activation, or when it is determined that the determined set value information is different from the set value information currently set in each control unit, the vehicular musical sound reproducing device 1 The set value information set in the control unit is changed according to the determined set value information (S5). On the other hand, if it is determined in S4 that the acquisition is not the first acquisition after startup and it is determined that the determined set value information is not different from the set value information currently set in each control unit, the vehicular musical sound reproducing device 1 performs S5. Do not perform the process.

  Next, the musical sound reproducing device 1 for a vehicle acquires vehicle state information by the vehicle state information acquisition unit 20 (S6). Then, a setting value of the reproduction parameter is determined based on the acquired vehicle state information and setting value information, and the reproduction parameter is controlled according to the setting value (S7). Then, the music data is reproduced using the reproduction parameter (S8). The vehicular musical sound reproducing device 1 repeats the processing from S1 to S8 until the power is turned off (S9).

  As described above, according to the musical sound reproducing device 1 for a vehicle, the reproduction parameter is controlled based on both the vehicle state information and the traveling environment information, so that the music reproduction parameter is changed according to the traveling state. Therefore, it is possible to prevent the music to be reproduced from being unnatural due to the difference in the traveling environment.

  Further, the music data reproducing apparatus 1 for a vehicle can reproduce music data suitable for the driving environment.

  The program for realizing the function of the vehicular musical sound reproducing device 1 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into the computer system and executed, whereby each of the above-mentioned Processing may be performed.

Here, the “computer system” may include an OS and hardware such as peripheral devices. Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” means a flexible disk, a magneto-optical disk, a ROM, a writable nonvolatile memory such as a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, etc. This is a storage device.
Furthermore, the “computer-readable recording medium” includes a volatile memory (for example, DRAM (DRAM) in a computer system that becomes a server or a client when a program is transmitted through a network such as the Internet or a communication line such as a telephone line. Dynamic Random Access Memory)), etc., which hold programs for a certain period of time.
The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
Further, the program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve each function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

It is a figure which shows the system configuration | structure and functional block of the musical sound reproduction apparatus for vehicles concerning embodiment of this invention. It is a figure for demonstrating concretely the process of the selection part concerning embodiment of this invention. It is a figure for demonstrating concretely the process of the control part concerning embodiment of this invention. It is a figure for demonstrating the specific example of the process which the setting value information setting part concerning embodiment of this invention performs, and is a figure regarding especially the setting value information of tempo with respect to a vehicle speed, and speed limit information. It is a figure for demonstrating the specific example of the process which the setting value information setting part concerning embodiment of this invention performs, and is a figure regarding especially the setting value information of the sound volume with respect to a vehicle speed, and speed limit information. It is a figure for demonstrating the specific example of the process which the setting value information setting part concerning embodiment of this invention performs, and is a figure regarding especially the setting value information of the sound volume with respect to a vehicle speed, weather information, and time information. It is a figure for demonstrating the specific example of the process which the setting value information setting part concerning embodiment of this invention performs, and is a figure regarding the setting value information of volume with respect to a vehicle speed, area information, and time information especially. It is a figure for demonstrating the specific example of the process which the setting value information setting part concerning embodiment of this invention performs, and is a figure regarding the setting value information of the waveform reproduction length with respect to engine speed, and road surface condition information in particular. is there. It is a figure for demonstrating the specific example of the process which the setting value information setting part concerning embodiment of this invention performs, and is a figure regarding especially the setting value information of the sound volume with respect to brake opening, and traffic jam information. It is a figure for demonstrating the specific example of the process which the setting value information setting part concerning embodiment of this invention performs, and is a figure regarding especially the setting value information of the effect level with respect to a vehicle speed, and road surface condition information. It is a figure which shows the processing flow of the musical sound reproducing apparatus for vehicles concerning embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Vehicle musical sound reproducing apparatus, 10 Driving environment information acquisition part, 20 Vehicle state information acquisition part, 30 Selection part, 31 Driving environment analysis part, 32 Genre / playlist selection part, 40 Music data storage part, 50 Control part, 51 Setting value information control unit, 52 reproduction parameter control unit, 53 rhythm pattern control unit, 54 melody pattern control unit, 55 tempo control unit, 56 tone color control unit, 57 effect control unit, 58 volume control unit, 59 vehicle state analysis unit, 60 setting value information storage unit, 70 music reproduction unit, 80 user setting reception unit, 90 various sensors, 511 traveling environment analysis unit, 512 setting value information setting unit.

Claims (4)

Speed information acquisition means for acquiring speed information of the vehicle;
Driving environment information acquisition means for acquiring driving environment information indicating the driving environment of the vehicle;
Music data storage means for storing music data;
Music playback means for playing back the music data;
On the basis of the travel environment information speed limit information of the acquired by the acquisition means and the driving environment information, controls the setting value information indicating a setting value for the speed information of the vehicle tempo during song playback by the music reproducing unit Setting value information control means;
And the setting value information after control by the setting value information control unit, a tempo control means and the speed information the velocity information acquired by the acquiring unit, based on the, control the tempo,
A vehicle sound reproducing apparatus comprising: The musical sound reproducing device for a vehicle according to claim 1,
The music data storage means stores a plurality of music data,
The vehicle music sound reproducing device is
Based on the travel environment information acquired by the travel environment information acquisition means, at least one music data to be played back by the music playback means is selected from a plurality of music data stored by the music data storage means. Selection means,
Including
The music reproduction means reproduces at least one music data selected by the selection means;
A vehicular musical sound reproducing apparatus characterized by the above. A speed information acquisition step for acquiring vehicle speed information;
A travel environment information acquisition step for acquiring travel environment information indicating the travel environment of the vehicle;
A music playback step for playing music data;
Based on the speed limit information of the travel environment information acquired in the travel environment information acquisition step, controlling the setting value information indicating a setting value for the speed information of the vehicle tempo during song playback in the music playback step A set value information control step;
And the setting value information after the control in the setting value information controlling step, and the velocity information acquiring the velocity information acquired in step, and tempo control step which controls the tempo based on,
A method for reproducing a musical sound for a vehicle, comprising: Speed information acquisition means for acquiring vehicle speed information;
Driving environment information acquisition means for acquiring driving environment information indicating the driving environment of the vehicle;
Music playback means for playing back music data;
On the basis of the travel environment information speed limit information of the acquired by the acquisition means and the driving environment information, controls the setting value information indicating a setting value for the speed information of the vehicle tempo during song playback by the music reproducing unit setting value information controlling means, and said set value information after control by the setting value information controlling means, said speed information acquired by the velocity information acquiring means, based on the tempo control means for controlling the tempo,
As a program to make the computer function as.

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