JP4429691B2 - On-vehicle acoustic device, control method for on-vehicle acoustic device, control program for on-vehicle acoustic device, and recording medium - Google Patents

Description

  The present invention relates to a vehicle acoustic device, a method for controlling the vehicle acoustic device, a control program for the vehicle acoustic device, and a recording medium.

Conventionally, a car audio device that presents sound information such as voice and music is mounted on the vehicle, and an in-vehicle information device such as a car navigation device and an e-mail receiving device that receives an e-mail is mounted on the vehicle. It has become to. In recent years, these car audio devices and in-vehicle information devices have been integrated so that the user can concentrate on driving by driving information related to vehicle driving by voice (for example, current position information of traveling vehicles, road guidance information, road congestion) In-vehicle acoustic devices that are configured so that various operations can be performed with the user's voice while presenting information, etc.) are known (for example, see Patent Document 1). In addition, in this type of in-vehicle acoustic device, there is a device configured to present, by voice, e-mail received by an e-mail receiving device as information other than driving information, for example.
Japanese Patent Laid-Open No. 9-160853

  However, in the on-vehicle acoustic device described above, the sound output information includes driving information such as music presented by a car audio device and electronic mail presented by an electronic mail receiving device in addition to driving information related to vehicle driving. Information that is not relevant is also included, such as the state where the user who is the driver is performing a driving operation that moves forward at a constant speed, the state where the user is performing a driving operation that turns a curve, an intersection, etc. It was presented regardless of the user's driving state. Therefore, depending on the driving state of the user, there is a problem that when the user wants to hear the driving information, the driving information cannot be heard by information other than the driving information or is difficult to hear. In addition, since the user needs to concentrate on driving the vehicle, there is a problem that the user misses the driving information output sound, particularly when the user has to concentrate on driving the vehicle.

  Accordingly, an object of the present invention is to solve the above-described problems of the conventional technology and efficiently present driving information to the user, a control method for the in-vehicle acoustic device, and the in-vehicle acoustic device. A control program and a recording medium.

In order to solve the above-mentioned problem, in a vehicle-mounted acoustic apparatus that enables sound output by mixing sound data related to vehicle driving information and sound data other than the sound data, the first in the horizontal plane including the traveling direction of the vehicle An acceleration detecting means for detecting an acceleration in a direction and a second direction within the horizontal plane and orthogonal to the acceleration in the first direction; the acceleration in the first direction detected by the acceleration detecting means; and depending on the acceleration in the second direction, it is characterized in that a said voice data and control means for enabling changed individually in the form of sound output based on the sound data.

In the in-vehicle acoustic device, one or more threshold values for the magnitude of the combined acceleration are set in advance in association with the direction of the combined acceleration of the acceleration in the first direction and the acceleration in the second direction, the control means, in response to the combined acceleration, each acceleration range is divided by the threshold value, the form of sound output based on the audio data and the sound data may be possible to change individually.

In the on-vehicle acoustic device, the control unit may individually permit or prohibit the sound output based on the sound data as the change of the form .

Furthermore, in the on-vehicle acoustic device, the control unit may individually change the sound output speed of the sound output based on the sound data as the change of the form.

In the above vehicle audio apparatus, wherein, as a change of the form, the volume of the sound output based on the sound volume and the sound data of the sound output based on the audio data may be changed individually.

  Further, in the on-vehicle acoustic device, as a change in the configuration, the control unit may be based on the audio data when the magnitude of the synthetic acceleration exceeds the threshold corresponding to the direction of the synthetic acceleration. You may perform at least any one of the change which makes the sound output volume large, or the change which makes the sound output sound volume based on the said sound data small.

Moreover, in the control method of the on-vehicle acoustic device that enables sound output by mixing sound data related to vehicle driving information and sound data other than the sound data, the first direction in the horizontal plane including the traveling direction of the vehicle An acceleration detection process for detecting acceleration in a second direction within the horizontal plane and orthogonal to the acceleration in the first direction; and the acceleration in the first direction and the second detected by the acceleration detection process. And a control process in which the sound data and the sound output form based on the sound data can be individually changed according to the acceleration in the direction.

Further, there is provided a control program for controlling, by a computer, audio data relating to vehicle driving information and an on-vehicle acoustic device capable of outputting sound by mixing sound data other than the audio data, and the traveling direction of the vehicle The first direction acceleration within the horizontal plane and the second direction acceleration within the horizontal plane perpendicular to the first direction acceleration are detected, and the first direction acceleration and the second direction acceleration are detected. Accordingly, the sound data and the sound output form based on the sound data can be individually changed.

  Further, the control program is recorded on a computer-readable recording medium.

  ADVANTAGE OF THE INVENTION According to this invention, the driving information regarding a driving | operation of a vehicle can be shown to a user efficiently.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a block diagram of an in-vehicle audio apparatus to which an embodiment of a recording apparatus according to the present invention is applied.

  This in-vehicle acoustic device 100 is mounted on a vehicle such as an automobile, and uses driving information related to vehicle driving such as current position information of a traveling vehicle, road guidance information, and road congestion information around the vehicle based on voice data related to the driving information. In addition to outputting sound, information that is not related to vehicle driving, such as music and e-mail, is output based on sound data related to the information.

  This in-vehicle acoustic device 100 includes a communication device 10, a sound information input device 12, a speech recognition device 14, an in-vehicle information device 16, a speech synthesizer 18, a music information presentation device 20, and a sound information mixing control device. 22, an amplifier device 24, a sound information output device 26, and a control device 28.

  The communication device 10 receives a radio wave for deriving the current position from a GPS satellite via an antenna (not shown), receives road congestion information around the vehicle, and various information such as e-mail and sightseeing information. Is output to the in-vehicle information device 16.

  The sound information input device 12 is, for example, a sound collecting device such as a microphone. In this embodiment, the sound information input device 12 collects sound (that is, a sound command) uttered by a user such as a driver, converts the sound into a sound signal, and outputs the sound. Output to the recognition device 14.

  The voice recognition device 14 executes voice recognition processing based on the input voice signal under the control of the control device 28, and outputs the voice recognition result to the in-vehicle information device 16.

  The in-vehicle information device 16 calculates the current position information of the traveling vehicle based on the radio wave received from the GPS satellite by the communication device 10. Furthermore, the in-vehicle information device 16 generates road guidance information based on the current position information. Further, the in-vehicle information device 16 executes various processes according to the voice recognition result input from the voice recognition device 14 and outputs data in a format capable of voice synthesis (for example, text data) to the voice synthesis device 18. Specifically, the in-vehicle information device 16 determines the current position information of the traveling vehicle, the road guidance information, the road according to the voice recognition result input from the voice recognition device 14 (that is, according to the voice command input from the user). Driving information such as congestion information, various information such as e-mail and sightseeing information, or information prompting the user to input a voice command is converted into text data and output to the voice synthesizer 18. That is, the in-vehicle information device 16 functions as a car navigation device and also functions as an e-mail receiving device. The in-vehicle information device 16 outputs corresponding text data to the speech synthesizer 18 in an interrupted manner every time various information such as driving information is acquired or generated.

  The voice synthesizer 18 synthesizes voice based on the input text data under the control of the control device 28, voice data A relating to driving information, information prompting input of voice commands, e-mail, sightseeing information, etc. The sound data B related to various information other than the driving information (hereinafter referred to as the first sound data B) is output to the sound information mixing controller 22 as an electrical signal.

  The music information presentation device 20 is, for example, a sound reproduction device such as a CD player or an MD player, and music data C (hereinafter referred to as second sound data C) recorded in advance on a recording medium such as a CD or MD. The second sound data C is read out and output to the sound information mixing controller 22 as an electrical signal.

  The sound information mixing control device 22 mixes or selectively outputs the sound data A or the first sound data B and the second sound data C to the amplifier device 24 under the control of the control device 28.

  The amplifier device 24 amplifies the electrical signal input from the sound information mixing control device 22 and outputs it to the sound information output device 26.

  The sound information output device 26 is, for example, a sound emitting device such as a speaker, and inputs the electric signal input from the amplifier device 24 and outputs the sound.

  The control device 28 controls various devices of the in-vehicle acoustic device 100 and includes a CPU, a ROM, a RAM, and the like (not shown). The CPU executes various processes based on the control program stored in the ROM. The ROM stores a control program executed by the CPU. The RAM temporarily stores various data and is used as a work area.

  By the way, in this embodiment, the biaxial acceleration sensor apparatus 30 as an acceleration detection means is mounted in the vehicle and connected to the control apparatus 28. The biaxial acceleration sensor device 30 includes an acceleration in a first direction in a horizontal plane that includes the traveling direction (forward direction) of the vehicle, and an acceleration in a second direction that is in the horizontal plane and orthogonal to the acceleration in the first direction. Is detected. More preferably, as shown in FIG. 2, the biaxial acceleration sensor device 30 includes a horizontal plane that includes an acceleration αY in a first direction parallel to the traveling direction (forward direction) Y of the vehicle 40 and the traveling direction Y of the vehicle 40. The acceleration αX in the second direction parallel to the direction X (for example, the right-hand direction of the vehicle 40) X that is in the direction perpendicular to the traveling direction Y is detected.

  In the present embodiment, when the vehicle 40 accelerates in the traveling direction Y, the acceleration αY in the first direction is detected as a positive value, and when the vehicle 40 decelerates in the traveling direction Y, the acceleration in the first direction. A biaxial acceleration sensor device 30 is arranged in the vehicle 40 so that αY is detected as a negative value.

  Further, for example, when the vehicle 40 turns to the right at a constant speed with respect to the traveling direction Y, the vehicle 40 exerts a centripetal force in the right hand direction opposite to the centrifugal force acting in the left hand direction. That is, when the vehicle 40 turns to the right, acceleration occurs in the right hand direction of the vehicle 40, and when the vehicle 40 turns to the left, acceleration occurs in the left hand direction of the vehicle 40. In the present embodiment, when the vehicle 40 turns to the right, the acceleration αX in the second direction is detected as a positive value, and when the vehicle 40 turns to the left, the acceleration αX in the second direction is detected as a negative value. A two-axis acceleration sensor device 30 is disposed on the vehicle 40. That is, when accelerating in the right hand direction of the vehicle 40, the acceleration αX in the second direction is detected as a positive value, and when accelerating in the left hand direction of the vehicle 40, the acceleration αX in the second direction is detected as a negative value. Thus, the biaxial acceleration sensor device 30 is arranged in the vehicle 40. When the vehicle 40 turns to the right, the acceleration αX in the second direction is detected as a negative value, and when the vehicle 40 turns to the left, the acceleration in the second direction αX is detected as a positive value. The acceleration sensor device 30 may be disposed on the vehicle 40.

  In FIG. 1, the control device 28, according to the detected acceleration αY in the first direction and acceleration αX in the second direction, voice data A relating to vehicle driving information, and first sound data other than the voice data A The in-vehicle information device 16, the speech synthesizer 18, and the sound information mixing control device 22 are controlled so as to change the form of sound output based on sound data such as B and second sound data C.

  Specifically, as control for changing the sound output mode, the control device 28 controls the in-vehicle information device 16 and the sound information mixing control device 22 to permit or prohibit sound output based on sound data. A first control mode, a second control mode for controlling the voice synthesizer 18 to change the sound output speed (ie, the reading speed) of the sound output based on the voice data A relating to the vehicle driving information, and the sound information mixing A third control mode for controlling the control device 22 to change the sound output volume based on the sound data A relating to the vehicle driving information and the second sound data C as the music data; One of the three control modes is set. These control modes may be set by a push button switch or the like via a remote controller (not shown), or may be set by a voice command recognized by the voice recognition device 14. Good.

  Further, the control device 28 changes the voice recognition device 14 so as to change the voice input reception time for receiving the input of the voice command from the user according to the detected acceleration αY in the first direction and acceleration αX in the second direction. Control.

  FIG. 3 is a flowchart showing the control operation of the control device 28.

  In FIG. 3, the control device 28 sets any one of the first to third control modes (step S1). This setting operation of the control mode is performed when the on-vehicle acoustic device 100 is turned on and when a setting change operation is performed by the user. It should be noted that when the on-vehicle acoustic device 100 is turned on, the control mode may be set to a predetermined control mode or may be set to the previously set control mode.

  Next, the control device 28 presents the set control mode to the speech recognition device 14, the in-vehicle information device 16, the speech synthesis device 18, and the sound information mixing control device 22 (step S2). That is, a signal indicating that the control mode is set is output to the speech recognition device 14, the in-vehicle information device 16, the speech synthesis device 18, and the sound information mixing control device 22. The operation in step S2 is performed when the control mode is set in step S1.

  The control device 28 acquires the acceleration αY in the first direction and the acceleration αX in the second direction detected by the biaxial acceleration sensor device 30 (step S3).

  Here, as shown in FIG. 4, the control device 28 sets the second threshold αX-αY coordinate system defined by the acceleration αY in the first direction and the acceleration αX in the second direction as a plurality of threshold values. The first threshold value T1 and the second threshold value T2 are set in a closed curve shape in advance. That is, if the combined acceleration of the acceleration αY in the first direction and the acceleration αX in the second direction (hereinafter referred to as vehicle acceleration) is α, the control device 28 associates the vehicle with the direction of the vehicle acceleration α. As a plurality of threshold values for the magnitude of the acceleration α, a first threshold value T1 and a second threshold value T2 having a value equal to or greater than the first threshold value T1 are set in advance. The acceleration ranges R1, R2, and R3 are formed by being divided by the plurality of threshold values T1 and T2. Here, depending on the direction of the acceleration α of the vehicle, the first threshold value T1 and the second threshold value T2 may be the same value. These threshold values T1 and T2 are stored in advance in a ROM (storage means) of the control device 28, for example.

  As shown in FIG. 3, the control device 28 compares the vehicle acceleration α with the threshold values T1 and T2 (step S4), and the vehicle acceleration α is any of the acceleration ranges R1, R2, and R3. It is determined whether it belongs to the acceleration range (step S5). That is, the control device 28 determines, based on the detected acceleration αY in the first direction and acceleration αX in the second direction, which acceleration range the acceleration range R1, R2, R3 belongs to. To do.

  Here, when the acceleration α of the vehicle belongs to the acceleration range R1, the vehicle is in a stopped state, the vehicle is accelerated and traveling in the traveling direction, or is traveling at a constant speed in the traveling direction Y. Or, the vehicle user has enough margin to drive the vehicle so that it can obtain other information other than driving information, such as when driving on a gentle curve at a constant speed, and can drive with normal concentration. Indicates the operating state.

  Further, when the acceleration α of the vehicle belongs to the acceleration range R2, normal concentration such as a state in which the vehicle is traveling at a reduced speed or a state in which the vehicle is traveling on a sharp curve including an intersection. This shows a driving state in which the vehicle needs to be driven with higher concentration than power.

  Further, when the vehicle acceleration α belongs to the acceleration range R3, the vehicle is used to avoid a traffic accident such as a state where the vehicle is decelerating rapidly or a state where the driver suddenly turns the vehicle handle. It shows the driving conditions that need to be concentrated on driving.

  Next, the control device 28 determines which of the acceleration ranges R1, R2, and R3 the acceleration α of the vehicle belongs to: the speech recognition device 14, the speech synthesizer 18, the in-vehicle information device 16, and the sound information mixing control device. It is presented to each device 22 (step S6). That is, the control signal D indicating which of the acceleration ranges R1, R2, and R3 the acceleration α of the vehicle belongs to the voice recognition device 14, the voice synthesizer 18, the in-vehicle information device 16, and the sound information mixing control device. 22 to each device.

  FIG. 5 is an explanatory diagram showing the time when the vehicle turns right. In FIG. 5A, the vehicle state M1 indicates a state where the vehicle is gradually moving to the right side while slowly decelerating in order to turn right at the intersection. The vehicle state M2 indicates a state in which the vehicle turns right at the intersection and the vehicle is traveling forward at a constant speed. The vehicle state M3 indicates a state where the vehicle passes through the intersection and goes straight at a constant speed.

  Referring to FIG. 5 (b), in the vehicle state M1, the vehicle is slightly decelerating in the traveling direction Y and slightly accelerating in the direction X, which is the right hand direction of the vehicle. At this time, for example, if the acceleration α of the vehicle is a value smaller than the first threshold value T1, the control device 28 determines that the acceleration α of the vehicle belongs to the acceleration range R1. That is, when the vehicle is simply decelerated in order to make a turn at an intersection or a curve, the vehicle is in a driving state in which the vehicle can be driven with a normal concentration force. Therefore, the acceleration α of the vehicle is set within the acceleration range R1 by the first threshold value T1. It is set to belong to.

  In the vehicle state M2, the vehicle is accelerating in the direction X, which is the right-hand direction of the vehicle, while traveling at a constant speed with respect to the traveling direction Y of the vehicle. At this time, for example, if the acceleration α of the vehicle is equal to or greater than the first threshold value T1 and is smaller than the second threshold value T2, the controller 28 determines that the acceleration α of the vehicle is It is determined that it belongs to the acceleration range R2. That is, when turning at an intersection, a curve, or the like, it is a driving state in which it is necessary to drive the vehicle with a higher concentration than the normal concentration, so the vehicle acceleration α is set to the acceleration range R2 by the first threshold value T1. It is set to belong to.

  In the vehicle state M3, the acceleration α of the vehicle is substantially zero because the vehicle is moving forward at a constant speed. At this time, the control device 28 determines that the acceleration α of the vehicle belongs to the acceleration range R1. Also in this case, since the vehicle is merely going straight ahead, the vehicle acceleration α is set to belong to the acceleration range R1 by the first threshold value T1.

  Here, the vehicle acceleration α is set so as to belong to the acceleration range R3 by the second threshold value T2 only when an operation such as sudden braking or suddenly turning the steering wheel is performed.

  In the present embodiment, the control device 28 uses the first sound as the sound data A or sound data for each of the acceleration ranges R1, R2, and R3 divided by the threshold values T1 and T2 according to the acceleration α of the vehicle. The sound output form based on the data B and the second sound data C is changed.

  Hereinafter, the operation of changing the sound output mode in each device when each of the first control mode, the second control mode, and the third control mode is set will be described.

  First, the control operations of the in-vehicle information device 16 and the sound information mixing control device 22 when set to the first control mode will be described with reference to the flowchart shown in FIG.

  The in-vehicle information device 16 and the sound information mixing control device 22 obtain from the control device 28 a control signal D indicating which acceleration range the acceleration α of the vehicle is in the acceleration ranges R1, R2 and R3 (step). S11). Next, the in-vehicle information device 16 and the sound information mixing control device 22 are firstly sound data depending on which acceleration range of the acceleration ranges R1, R2, and R3 belongs to the acceleration range R1, R2, and R3. The sound output based on is permitted or prohibited (step S12).

  Here, permitting sound output based on sound data means that in the in-vehicle information device 16, text information related to various information other than driving information such as e-mail and sightseeing information or information prompting the user to input a voice command is sounded. By permitting output to the synthesizer 18, text data corresponding to the first sound data B can be output to the speech synthesizer 18. In the sound information mixing control device 22, the sound output based on the second sound data C is permitted.

  Further, prohibiting sound output based on sound data means that in-vehicle information device 16 synthesizes text data related to various information other than driving information such as e-mail and sightseeing information or information prompting the user to input a voice command. It is prohibited to output to the device 18, and only text data related to driving information (that is, text data corresponding to the voice data A) can be output from the in-vehicle information device 16. In the sound information mixing control device 22, the sound output based on the second sound data C is prohibited.

  In the present embodiment, the sound data other than the sound data A is classified into two sound data of the first sound data B and the second sound data C, and sound output based on the sound data B and C is permitted or It is forbidden. The voice data A is driving information, which is important information for the user who drives the vehicle, and thus allows sound output regardless of the acceleration α of the vehicle.

  A specific control operation of the in-vehicle information device 16 and the sound information mixing control device 22 will be described with reference to the control operation explanatory diagram shown in FIG. When the magnitude of α does not exceed the first threshold value T1 corresponding to the direction of the acceleration α, that is, when the acceleration α of the vehicle belongs to the acceleration range R1, the first sound data B and the second sound data B It is set so as to permit sound output based on the sound data C. As a result, when the vehicle acceleration α belongs to the acceleration range R1, sound output of information other than driving information and driving information and sound output of music are permitted.

  Further, when the magnitude of the acceleration α of the vehicle exceeds the first threshold value T1 corresponding to the direction of the acceleration α and does not exceed the second threshold value T2, that is, the acceleration α of the vehicle is When belonging to the acceleration range R2, the in-vehicle information device 16 is set to prohibit sound output based on the first sound data B, and the sound information mixing control device 22 outputs sound based on the second sound data C. Is set to be permitted. As a result, when the vehicle acceleration α belongs to the acceleration range R2, sound output of driving information and sound output of music are permitted, and sound output of information other than driving information is prohibited. Therefore, since the output of audio other than driving information is prohibited at intersections, curves, and the like, which are situations where the user wants to hear driving information, driving information can be efficiently presented to the user. Thus, when the user needs the driving information, the user cannot hear the driving information due to an interruption of sound other than the driving information.

  When the magnitude of the acceleration α of the vehicle exceeds the second threshold value T2 corresponding to the direction of the acceleration α, that is, when the acceleration α of the vehicle belongs to the acceleration range R3, the in-vehicle information device 16 and the sound The information mixing control device 22 is set so as to prohibit sound output based on the first sound data B and the second sound data C. As a result, when the acceleration α of the vehicle belongs to the acceleration range R3, the sound output of the driving information is permitted, and the sound output of information other than the driving information and the sound output of music are prohibited. Accordingly, the first sound data B, which is audio data other than driving information, in a situation where the user needs to concentrate on driving, such as when the user performs an operation such as sudden braking or suddenly turning the steering wheel, and Since the sound output based on the second sound data C as the music data is prohibited, the driving information can be efficiently presented to the user and the user's concentration on driving the vehicle is not hindered.

  When sound output based on the first sound data B is prohibited, text data corresponding to the first sound data B is stored in a RAM (storage means) (not shown) of the in-vehicle information device 16. Next, when sound output based on the first sound data B is permitted, text data corresponding to the stored first sound data B is output to the speech synthesizer 18 and synthesized by the speech synthesizer 18. Then, sound output based on the second sound data B is performed. As a result, when the vehicle acceleration α changes from the acceleration range R3 or R2 so as to belong to the acceleration range R1, the vehicle information is temporarily held in the in-vehicle information device 16 when there is a margin in vehicle driving for the user. Since it is possible to let the user hear information that is not related to vehicle driving, such as e-mail and sightseeing information, information other than driving information can be presented more effectively.

  Next, the control operation of the speech synthesizer 18 when the second control mode is set will be described with reference to the flowchart shown in FIG.

  The speech synthesizer 18 acquires a control signal D indicating which acceleration range of the vehicle is within the acceleration ranges R1, R2, and R3 from the control device 28 (step S21). Next, the speech synthesizer 18 determines the sound output speed (that is, the sound output speed based on the sound data A related to the driving information) according to which of the acceleration ranges R1, R2, and R3 the acceleration α of the vehicle belongs to. The reading speed is changed (step S22).

  A specific control operation of the speech synthesizer 18 will be described with reference to a control operation explanatory diagram shown in FIG. The voice synthesizer 18 determines that if the magnitude of the vehicle acceleration α does not exceed the first threshold value T1 corresponding to the direction of the acceleration α, that is, if the vehicle acceleration α belongs to the acceleration range R1. The speech synthesis timing interval for speech synthesis of text data corresponding to speech data A, that is, text data related to driving information, is set so that the sound output speed of sound output based on data A becomes a preset standard reading time. Set. As a result, the driving information is output at a preset sound output speed.

  The speech synthesizer 18 also determines that the acceleration α of the vehicle exceeds the first threshold value T1 corresponding to the direction of the acceleration α and does not exceed the second threshold value T2. When the acceleration α of the vehicle belongs to the acceleration range R2, the text data corresponding to the voice data A, that is, the sound output speed of the sound output based on the voice data A becomes longer than a preset standard reading time, that is, It is set so as to widen the speech synthesis timing interval when text data related to driving information is synthesized. Thereby, when the acceleration α of the vehicle exceeds the threshold value T1, the sound output speed of the sound output based on the sound data A is changed so as to become slow. Therefore, the in-vehicle acoustic device 100 is suitable for driving information when the user wants to acquire driving information related to vehicle driving, such as when the vehicle is turning an intersection or a curve, but needs to concentrate on driving the vehicle. Since the vehicle-mounted acoustic device 100 can efficiently present driving information to the user. As a result, the user is less likely to miss driving information.

  The voice synthesizer 18 also determines that the magnitude of the vehicle acceleration α exceeds the second threshold value T2 corresponding to the direction of the acceleration α, that is, the vehicle acceleration α belongs to the acceleration range R3. The output of voice data A, which is the result of voice synthesis of text data related to driving information, is stopped. In this case, the speech synthesizer 18 stores speech data A that is the result of speech synthesis. The voice synthesizer 18 outputs the stored voice data A when the acceleration α of the vehicle belongs to the acceleration range R1 or R2.

  Thereby, when the acceleration α of the vehicle belongs to the acceleration range R3, the presentation of new driving information is suspended, and the driving information is presented after the acceleration α of the vehicle has shifted to the acceleration range R1 or R2. Therefore, when the vehicle acceleration α changes from the acceleration range R3 so as to belong to the acceleration range R1 or R2, the driving related to the vehicle driving temporarily suspended when the vehicle has a margin for driving the vehicle. Since the information can be heard by the user, the driving information can be presented to the user more effectively.

  Next, the control operation of the sound information mixing control device 22 when the third control mode is set will be described with reference to the flowchart shown in FIG.

  The sound information mixing control device 22 acquires from the control device 28 a control signal D indicating which of the acceleration ranges R1, R2, and R3 the acceleration α of the vehicle is (step S31). Next, the sound information mixing control device 22 determines the sound data A and the second sound data related to the driving information depending on which acceleration range of the acceleration ranges R1, R2, and R3 the vehicle acceleration α belongs to. The volume of the sound output based on C is changed (step S32).

  A specific control operation of the sound information mixing control device 22 will be described with reference to a control operation explanatory diagram shown in FIG. The sound information mixing control device 22 determines that the magnitude of the vehicle acceleration α does not exceed the first threshold value T1 corresponding to the direction of the acceleration α, that is, the vehicle acceleration α belongs to the acceleration range R1. The sound is output based on the sound data A and the second sound data C so that the sound output sound volume based on the sound data A becomes a sound volume preset by the user. That is, the sound is output at the initial volume set by the user who is the driver.

  Further, the sound information mixing control device 22 has a case where the magnitude of the acceleration α of the vehicle exceeds the first threshold value T1 corresponding to the direction of the acceleration α and does not exceed the second threshold value T2. That is, when the acceleration α of the vehicle belongs to the acceleration range R2, the volume of the sound output based on the sound data C is set in advance so that the volume of the sound output based on the sound data A is larger than a preset volume. Change the volume so that it is lower than the set volume. Thereby, when the acceleration α of the vehicle belongs to the acceleration range R2, the volume of the sound output related to the driving information is increased, and the volume of the music information is decreased. Therefore, it is possible to efficiently present the driving information to the user because the volume of the sound corresponding to the driving information is increased and the volume of the music is decreased at an intersection or a curve where the user wants to hear the driving information. it can. Thus, when the user needs the driving information, the driving information is not difficult to hear with music.

  The sound information mixing control device 22 also determines that the acceleration α of the vehicle exceeds the second threshold value T2 corresponding to the direction of the acceleration α, that is, the acceleration α of the vehicle belongs to the acceleration range R3. In this case, the sound output based on the sound data C is stopped so that the sound output sound volume based on the sound data C becomes larger than the sound volume set when it belongs to the acceleration range R2 (that is, the sound volume is zero). Change). As a result, when the acceleration α of the vehicle belongs to the acceleration range R3, the sound output sound volume related to the driving information is further increased, and the sound output of the music information is stopped. Therefore, the music sound output is stopped, especially in situations where the user needs to concentrate on driving, such as when the user performs an operation such as sudden braking or suddenly turning the steering wheel. And the user's concentration on driving the vehicle is not hindered.

  Next, when the first, second, or third control mode is set, the in-vehicle information device 16 prompts the user to input a voice command by voice, and text data for prompting the user to input the voice command. Is output to the speech synthesizer 18, and the first sound data B synthesized by the speech synthesizer 18 passes through the sound information mixing control device 22, the amplifier device 24, and the sound information output device 26, and is output to the first sound data B. The sound is output based on the sound data B. For example, it prompts voice input of the destination of the vehicle, voice input as to whether or not to read the received electronic mail, and the like.

  When the user utters a voice command and the voice information is input to the sound information input device 12, the voice recognition device 14 normally recognizes the voice command input by the user and uses the recognition result as the in-vehicle information device 16. The in-vehicle information device 16 executes processing corresponding to the voice command.

  Hereinafter, the control operation of the speech recognition apparatus 14 when the first, second, or third control mode is set will be described with reference to the flowchart shown in FIG.

  In the present embodiment, the voice recognition device 14 acquires from the control device 28 a control signal D that indicates which of the acceleration ranges R1, R2, and R3 is the acceleration α of the vehicle (step S41). . Next, the voice recognition device 14 sets a voice input reception time for receiving a voice command input from the user depending on which acceleration range of the acceleration ranges R1, R2, and R3 the vehicle acceleration α belongs to. Change (step S42).

  A specific control operation of the speech recognition apparatus 14 will be described with reference to a control operation explanatory diagram shown in FIG. If the magnitude of the acceleration α of the vehicle does not exceed the first threshold value T1 corresponding to the direction of the acceleration α, that is, if the acceleration α of the vehicle belongs to the acceleration range R1, the voice recognition device 14 The input reception time is set to a predetermined reference time. As a result, the voice recognition device 14 accepts voice input for the preset voice input acceptance time.

  The voice recognition device 14 also determines that the magnitude of the vehicle acceleration α exceeds the first threshold value T1 corresponding to the direction of the acceleration α and does not exceed the second threshold value T2, that is, When the acceleration α of the vehicle belongs to the acceleration range R2, the voice input reception time is changed so as to be longer than a preset reference time. Thereby, when the acceleration α of the vehicle belongs to the acceleration range R2, the voice input acceptance time is changed to be longer.

  That is, when the vehicle acceleration α belongs to the acceleration range R1, if the voice recognition time is lengthened, an erroneous operation may be caused. It is preferable to set as short as possible, but the vehicle acceleration α belongs to the acceleration range R2. In such a case, since the vehicle is in a state of turning at an intersection, a curve, or the like, the user concentrates on driving the vehicle, and the operation for inputting the voice command is delayed. Therefore, when the vehicle acceleration α belongs to the acceleration range R2, the voice recognition device 14 recognizes the voice command issued by the user even if the voice operation of the user is delayed by setting the voice input reception time longer. can do.

  The voice recognition device 14 also determines that the magnitude of the vehicle acceleration α exceeds the second threshold value T2 corresponding to the direction of the acceleration α, that is, the vehicle acceleration α belongs to the acceleration range R3. It changes so that the operation | movement which recognizes the voice command which the user input is stopped. As a result, when the acceleration α of the vehicle belongs to the acceleration range R3, the voice recognition function is stopped in the voice recognition device 14. That is, the case where the acceleration α of the vehicle belongs to the acceleration range R3 is a case where the user performs a sudden brake or a sudden steering operation, and is not a situation where the user can speak a voice command. Even if the user can utter a voice command, it is unlikely that the voice recognition device 14 can recognize it. Therefore, when the acceleration α of the vehicle belongs to the acceleration range R3, the voice recognition function is stopped in the voice recognition device 14, so that the rate at which the voice recognition device 14 operates due to an erroneous operation is reduced.

  As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to this.

  For example, in the above-described embodiment, a case has been described in which two threshold values, the first threshold value T1 and the second threshold value T2, are set as a plurality of threshold values. However, the present invention is not limited to this. Alternatively, three or more n threshold values may be set. In this case, the relationship between the mth threshold value (m is an integer of 3,..., N−1) and the (m + 1) th threshold value is the same as the first threshold value T1 of the above-described embodiment. Similar to the relationship with the second threshold T2, the mth threshold corresponds to the first threshold, and the (m + 1) th threshold is equal to the second threshold. Corresponding.

  In the case where the first control mode is set, the in-vehicle information device 16 and the sound information mixing control device 22 classify the sound data into n sound data, and are classified by a plurality of threshold values. Sound output based on the kth sound data (k is an integer of 1,..., N) may be permitted or prohibited for each acceleration range.

  When the second control mode is set, the speech synthesizer 18 slows down the sound output speed based on the sound data related to the driving information every time the vehicle acceleration α exceeds each threshold value. It may be changed.

  When the third control mode is set, the sound information mixing control device 22 increases the sound output volume based on the sound data related to the driving information every time the vehicle acceleration α exceeds each threshold value. At least one of the change to be performed or the change to reduce the volume of the sound output based on the sound data other than the sound data may be performed.

  Further, when the first, second or third control mode is set, the speech recognition device 14 increases the speech input reception time each time the vehicle acceleration α exceeds each threshold value. It may be changed.

  In the above embodiment, the case where a plurality of threshold values T1 and T2 are set has been described. However, a case where one threshold value is set may be used. One threshold value in this case corresponds to the first threshold value T1 in the above embodiment.

  In the above embodiment, the sound information mixing control device 22 determines the volume of the sound output based on the sound data when the acceleration α of the vehicle exceeds a threshold value corresponding to the direction of the acceleration α of the vehicle. In the case of changing both of the change to increase the sound volume or the change to decrease the volume of the sound output based on the sound data, the sound information mixing control device 22 determines that the acceleration α of the vehicle Even when the threshold value corresponding to the direction of the acceleration α of the vehicle is exceeded, the sound output volume based on the audio data is increased or the sound output volume is changed based on the sound data. Good. That is, the sound output based on the sound data related to the driving information is made easier for the user to hear than the sound output based on the music data which is other sound data.

  In the above embodiment, the control program is stored in the ROM in advance. However, the control program is stored in advance on a computer-readable recording medium such as a hard disk, a removable recording medium, or an IC card. Alternatively, the control program can be configured to be downloaded via a network such as the Internet.

1 is a block diagram of an in-vehicle acoustic device to which an embodiment of a recording device according to the present invention is applied. It is explanatory drawing which shows the detection direction of the acceleration of a vehicle. It is a flowchart which shows the control action of a control apparatus. It is explanatory drawing which shows the threshold value with respect to the acceleration of a vehicle. It is explanatory drawing which shows the time of the intersection right turn of a vehicle. It is a flowchart which shows the control operation of a vehicle-mounted information apparatus and a sound information mixing control apparatus. It is control operation explanatory drawing which shows the control operation of a vehicle-mounted information apparatus and a sound information mixing control apparatus. It is a flowchart which shows the control operation | movement of a speech synthesizer. It is control operation explanatory drawing which shows the control operation of a speech synthesizer. It is a flowchart which shows a sound information mixing control apparatus. It is control operation explanatory drawing which shows a sound information mixing control apparatus. It is a flowchart which shows a speech recognition apparatus. It is control operation explanatory drawing which shows a speech recognition apparatus.

Explanation of symbols

14 Voice recognition device (control means, voice processing means)
16 Onboard information equipment (control means, voice processing means)
18 Speech synthesizer (control means, speech processing means)
20 music information presentation device 22 sound information mixing control device (control means)
28 Control device (control means)
30 Biaxial acceleration sensor device (acceleration detecting means)
100 On-vehicle acoustic device A Audio data B First sound data (sound data)
C Second sound data (sound data)
αX Acceleration in the second direction αY Acceleration in the first direction

Claims (9)

In the in-vehicle acoustic device that enables sound output by mixing sound data related to vehicle driving information and sound data other than the sound data,
Acceleration detecting means for detecting acceleration in a first direction in a horizontal plane including a traveling direction of the vehicle, and acceleration in a second direction perpendicular to the acceleration in the first direction in the horizontal plane;
Control means for individually changing the sound data and the sound output form based on the sound data according to the acceleration in the first direction and the acceleration in the second direction detected by the acceleration detection means. An on-vehicle acoustic device characterized by the above. The in-vehicle acoustic device according to claim 1,
In association with the direction of the combined acceleration of the acceleration in the first direction and the acceleration in the second direction, one or more threshold values for the magnitude of the combined acceleration are set in advance,
The control means can individually change a form of sound output based on the sound data and the sound data for each acceleration range divided by the threshold according to the combined acceleration. In-vehicle acoustic device. In the on-vehicle acoustic device according to claim 1 or 2,
The on-vehicle acoustic device characterized in that the control means individually permits or prohibits sound output based on the sound data as the change of the form. The in-vehicle acoustic device according to claim 1 or 2,
The said control means changes the sound output speed of the sound output based on the said audio | voice data separately as a change of the said form, The vehicle-mounted acoustic apparatus characterized by the above-mentioned. In the on-vehicle acoustic device according to claim 1 or 2,
The on-vehicle acoustic device characterized in that the control means can individually change the volume of sound output based on the audio data and the volume of sound output based on the sound data as the change of the form. The in-vehicle audio device according to claim 2,
The control means, as the change in the form, is a change in which the volume of the sound output based on the audio data is increased when the magnitude of the synthesized acceleration exceeds the threshold corresponding to the direction of the synthesized acceleration, or An on-vehicle acoustic device characterized in that at least one of changes for reducing the volume of sound output based on the sound data is performed. In the control method of the in-vehicle acoustic device that enables sound output by mixing sound data related to vehicle driving information and sound data other than the sound data,
An acceleration detection process for detecting an acceleration in a first direction within a horizontal plane including a traveling direction of the vehicle, and an acceleration in a second direction within the horizontal plane and orthogonal to the acceleration in the first direction;
A control process for individually changing the sound data and the sound output form based on the sound data in accordance with the acceleration in the first direction and the acceleration in the second direction detected by the acceleration detection process. A method for controlling an on-vehicle audio device, comprising: A control program for controlling, by a computer, audio data relating to vehicle driving information, and a vehicle-mounted acoustic device that enables sound output by mixing sound data other than the audio data,
An acceleration in a first direction in a horizontal plane including a traveling direction of the vehicle, and an acceleration in a second direction orthogonal to the acceleration in the first direction in the horizontal plane,
A control program for an in-vehicle acoustic device, wherein the sound data and the sound output form based on the sound data can be individually changed according to the acceleration in the first direction and the acceleration in the second direction. . 9. A computer-readable recording medium on which the control program according to claim 8 is recorded.

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