JP2009147813A - Acoustic system, and setting method of acoustic system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily recognize the level of leaking sound between listening positions without depending on sensation of a listener, in an acoustic system outputting sounds different from one another to a plurality of listening positions. <P>SOLUTION: This acoustic system includes: speakers 17a, 17b, 17c and 17d outputting sounds different from one another to seats A, B, C and D, respectively; and a display part 19a displaying the level of leaking sound, in the seat A, of sounds output to the seats B, C and D by the speakers 17b, 17c and 17d, and the level of leaking sound, in the seat B, of sounds output to the seats A, C and D by the speakers 17a, 17c and 17d to be able to be compared with each other through visual sensation. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an acoustic system capable of outputting different sounds to a plurality of listening positions.

  Conventionally, an acoustic space control that displays an image corresponding to the acoustic space generated by controlling the output sound, changes the image according to the user's instruction, and further changes the output sound in response to the image change. There is a device (see Patent Document 1).

Moreover, the vehicle-mounted audio apparatus which displays the character information and pattern data which show a vehicle type, and adjusts the equalizer characteristic corresponding to the selected vehicle type (refer patent document 2), and shows the selected seat position A vehicle-mounted acoustic device that displays pattern data and adjusts the signal level and delay time of an audio signal output from a speaker arranged in accordance with the seat position (see Patent Document 3), sound field mode and volume level There is a vehicle-mounted acoustic device that displays pattern data to be displayed and sets a desired sound field mode and volume (see Patent Documents 4 and 5).
JP 2007-116363 A Japanese Patent Laid-Open No. 10-32890 Japanese Patent Laid-Open No. 10-32898 Japanese Patent Laid-Open No. 10-32899 Japanese Patent Laid-Open No. 10-32900

  2. Description of the Related Art Conventionally, there is an acoustic system that allows different sounds to be heard for each listener at a listening position by outputting different sounds to a plurality of listening positions. However, in such an acoustic system, there arises a problem that the sound leakage sound output for each listening position affects the listening environment at other listening positions. In order to reduce the influence of this leaking sound, techniques such as cancellation of the leaking sound and equalizing are used. According to such a technique, for example, when it is desired to listen to a different sound source for each listener in each seat in the vehicle, it is possible to increase the acoustic independence of each listening position.

  However, even if a technique for reducing the influence of leakage sound is used, it is difficult to completely eliminate the influence of leakage sound with the current technique. In addition, since the degree to which the leaking sound is bothering or uncomfortable varies depending on the listener, the leaking sound that is not of interest to one listener is considered to be an unpleasant sound for other listeners. The situation can occur.

  That is, in an acoustic system that outputs different sounds to a plurality of listening positions, in order to obtain a good acoustic environment for the listener, a plurality of listening positions where different sound sources and the like are output are mutually connected. It is necessary to adjust the loudness of the sound leaking to the listener based on the listener's feeling that varies from person to person. In addition, since the level of the leaking sound is determined by volume adjustment, equalizing, and the like, it is difficult to grasp the level of the leaking sound without depending on the listener's sense.

  In view of the above problems, the present invention can easily grasp the degree of sound leakage between listening positions in an acoustic system that outputs different sounds to a plurality of listening positions without depending on the listener's senses. The task is to do.

  In order to solve the above-described problems, the present invention displays the level of leaking sound at a plurality of listening positions so as to be comparable through vision, so that the leaking sound between listening positions is not dependent on the listener's sense. It became possible to grasp the degree easily.

  Specifically, the present invention provides a sound output means for outputting different sounds to a plurality of listening positions, and the first sound output means at the first listening position among the plurality of listening positions. The degree of acoustic leakage sound output to the listening position excluding the listening position, and the listening position excluding the second listening position by the sound output means at the second listening position among the plurality of listening positions And a display means for displaying the degree of the sound leakage sound that is output so as to be visually comparable.

  Here, the plurality of listening positions are a plurality of listening positions defined in a space where sound is output by the sound system. The sound output means outputs sound related to different sound sources and sound related to different output sound settings for each listening position. That is, the acoustic system according to the present invention is an acoustic system that provides a different acoustic environment for each listening position by using such acoustic output means.

  In such an acoustic system, the sound leakage sound output for each listening position affects the listening environment at other listening positions. The present invention is provided with a display means for displaying the degree of leakage sound at a plurality of listening positions so as to be visually comparable, so that the user can intuitively grasp the degree of acoustic independence of the plurality of listening positions. did.

  Note that the acoustic independence of the listening position indicates the degree of influence of sound (leakage sound) other than the sound output for the purpose of delivery to the listening position at the listening position where the sound is provided. It is an indicator. That is, the degree of independence corresponds to the magnitude of leakage sound with respect to the listening position. However, the degree of independence is not a characteristic such as an index that must be calculated based on a completely defined standard, but may be an index that can grasp the degree of leakage sound. For example, the degree of independence may be a volume that is a measure of the leaked sound, or may be expressed by replacing the degree of uncomfortable feeling felt by the leaked sound with a stepped level.

  Further, the display means displays a first image indicating the degree of sound leaking to the first listening position and a second image indicating the degree of sound leaking to the second listening position. The first image and the second image have a relationship between the degree of sound leaked to the first listening position and the level of sound leaked to the second listening position in the comparison display by the display means. It may have a relative size corresponding to.

  That is, according to the present invention, it is possible to make the user intuitively grasp the degree of the leakage sound between the listening positions by comparing the leakage sounds at the plurality of listening positions according to the size of the displayed image. Become.

  In the display by the display means, the first image and the second image are adjacent to each other via a boundary within a predetermined display area corresponding to a space in which the plurality of listening positions are arranged. And the display means displays the boundary at a position determined based on a relationship between the degree of leakage sound to the first listening position and the degree of leakage sound to the second listening position. May be.

Here, the predetermined display area is an area representing a space in which a plurality of listening positions are arranged in the display by the display means. The first image and the second image are displayed adjacent to each other via a boundary in the predetermined display area. The display position of this boundary is determined based on the relationship between the degree of leaking sound to the first listening position and the degree of leaking sound to the second listening position. That is, when the relationship between the level of leaked sound at the first listening position and the level of leaked sound at the second listening position changes, the display position of this boundary moves.

  That is, according to the present invention, the size (display area) of each region (first image and second image) delimited by the boundary changes with the movement of the boundary, so It is possible for the user to intuitively understand that the acoustic independence at the plurality of listening positions has a relative relationship.

  In addition, the acoustic system according to the present invention includes a receiving unit that receives an operation by a user, and one of the first listening position and the second listening position according to the content of the operation received by the receiving unit. Setting means for setting an output sound related to the sound output by the sound output means with respect to a listening position is further provided, and the display means is controlled by the sound output means according to the content of the output sound setting by the setting means. The degree of sound leaked to the first listening position and the level of sound leaked to the second listening position due to the output sound may be displayed so as to be visually comparable.

  Here, the output sound setting includes volume setting, equalizing, and the like. By setting these parameters, the characteristics of the output sound by the sound output means change and affect the independence of each listening position. According to the present invention, the display of the level of leakage sound by the display means is updated according to the content of the output sound setting, and the user can easily and intuitively change depending on the setting content while changing the setting. It is possible to grasp the degree of independence to be performed and feed back to the setting contents.

  The sound system according to the present invention further includes a setting content storage unit that stores the content of the output sound setting related to the sound output by the sound output unit according to the content of the operation received by the reception unit, The setting unit may read the setting content stored by the setting content storage unit and perform output sound setting according to an operation for calling the stored setting content received by the reception unit. According to the present invention, it is possible to save or recall the contents of the sound settings that can reproduce the degree of independence adjusted by an intuitive operation with a simple operation.

  The present invention can also be understood as a method for setting an acoustic system. That is, the present invention is a method for setting an acoustic system that outputs different sounds to a plurality of listening positions, according to a reception step for receiving an operation by a user, and according to the contents of the operation received in the reception step. A setting step for performing output sound setting related to sound output by the sound system with respect to any one of the first listening position and the second listening position among the plurality of listening positions; Depending on the content of the output sound setting in the setting step, the degree of acoustic leakage sound output to the listening position other than the first listening position by the sound output means in the first listening position; In the second listening position, the degree of sound leakage sound output to the listening position excluding the second listening position by the sound output means, And a display step of comparably displayed through objective, a method of setting the audio system.

  According to the present invention, in an acoustic system that outputs different sounds to a plurality of listening positions, it is possible to easily grasp the degree of leakage sound between listening positions without depending on the listener's senses.

  DESCRIPTION OF EMBODIMENTS Embodiments of an acoustic system and an acoustic system setting method according to the present invention will be described with reference to the drawings.

<Configuration of acoustic system>
FIG. 1 is a diagram illustrating a configuration of an acoustic system according to the present embodiment. The acoustic system 1 according to the present embodiment is an in-vehicle acoustic system 1 installed in a vehicle having four seats A, B, C, and D, and includes a control unit 11 that controls the entire system and a plurality of sound sources. A selector 12 that selects an input acoustic signal, an A / D converter 13 that converts an analog acoustic signal input from a sound source selected by the selector 12 into a digital acoustic signal, and a DSP (Digital) that controls the digital acoustic signal A signal processor 14, a D / A converter 15 that converts a digital sound signal output from the DSP 14 into an analog sound signal, and an amplifier 16 that amplifies the analog sound signal output by the D / A converter 15. And speakers 17a, 17b, 17c, 17d that receive the input of the amplified acoustic signal and output the sound, A storage unit 18 that holds a plurality of preset patterns, which are combinations of parameters prepared in advance, and a display unit 19a that outputs an image generated based on setting contents read from the DSP 14 or the like by the control unit 11; An operation receiving unit 19b that receives various operations by the user.

  The acoustic system 1 according to the present embodiment receives inputs from a plurality of sound sources, and a plurality of sets of speakers 17a and 17b arranged for respective seats (listening positions) A, B, C, and D in the vehicle. , 17c and 17d, the sound system 1 is capable of outputting sound from different sound sources to each seat or outputting sound to which different sound settings are applied. Hereinafter, when simply described as “speaker 17”, it refers to a set of speakers for generating a single sound field, such as two stereo channels or 5.1 channels. Examples of the plurality of sound sources include a CD / DVD drive, an MD drive, a radio receiver (AM / FM), a television broadcast receiver (analog broadcast / digital broadcast), and a navigation system 20.

  The control unit 11 performs processing for designating a sound source selected by the selector 12 according to an instruction input via a GUI (Graphical User Interface) realized by a display unit 19a and an operation receiving unit 19b described later, The entire system is controlled by performing processing for setting various parameters used in the processing.

  The selector 12 selects an acoustic signal input from a sound source that is instructed via the operation reception unit 19 b and specified by the control unit 11 from among acoustic signals input from a plurality of sound sources. That is, according to the acoustic system 1 according to the present embodiment, the sound from the navigation system 20 is output from the speaker 17a installed in the seat A (driver's seat), and the speaker 17b installed in the seat B (passenger seat). Can output sound from a radio receiver, and can output sound from a CD / DVD drive from speakers 17c and 17d installed in seats C and D (rear seats). It is also possible to output sound from the same sound source or sound to which the same sound setting is applied to all seats in the vehicle.

  The DSP 14 is a device that performs various controls on the digital sound signal in the sound system 1 and executes, for example, a volume setting process and an equalizing process on the digital sound signal. Further, the DSP 14 according to the present embodiment functions as a localization control filter 14a for performing localization control in each seat and a leakage sound reduction filter 14b for reducing the influence of leakage noise in each seat.

The localization control filter 14a has a sound image localization position, which is an acoustic output position recognized by the listener, and an area of the virtual acoustic space that the listener recognizes auditoryly for the acoustic signal input from the sound source. It is a filter that performs signal processing for control. Specifically, the sound image localization position and the virtual acoustic space are controlled by signal processing including control of volume balance for each frequency band by equalizing, control of reverberant sound, and the like. Note that the localization control filter 14a according to the present embodiment can perform localization control based on different settings for each speaker 17 for each seat. That is, in this embodiment, it is possible to generate different sound image localization positions and virtual acoustic spaces for each seat. In the present embodiment, the localization control filter 14a is realized by the DSP 14 executing a program for processing the localization control filter 14a. However, the localization control filter 14a may be realized by a dedicated processor that performs signal processing for performing localization control on the acoustic signal.

  The parameters for the localization control filter 14a according to the present embodiment include the distance from the listening position (more precisely, the position of the head or ear of the listener seated on the seat) to the virtual sound source, and the virtual sound source relative to the front axis of the listening position. Includes angle, duration of reverberation, and volume of reverberation. However, the types of parameters are not limited to these examples. In this embodiment, the value of each parameter is prepared in advance for each type of virtual acoustic space (concert hall, live house, karaoke box, living room, etc.) determined in advance, and stored in the storage unit 18. ing. The storage unit 18 is preferably a device generally used as an auxiliary storage device, such as an EEPROM (Electrically Erasable Programmable Read Only Memory) or an HDD drive.

  The leakage sound reduction filter 14b reduces the influence of the sound leakage sound output in other seats (for example, the driver seat and the passenger seat) on the sound output in a certain seat (for example, the rear seat). Therefore, it is a filter for outputting sound having an opposite phase to the sound leakage sound output from the speaker 17 of the other seat. In the above example, in addition to the sound output for the rear seat, the rear seat speakers 17c and 17d output the opposite phase sound of the sound leaking from the driver seat and the passenger seat, Cancel the leaking sound from the passenger seat and reduce the leaking sound. In addition, the leak sound reduction filter 14b according to the present embodiment outputs leak sound reduction sound based on different settings for each seat speaker 17. In the present embodiment, the leakage noise reduction filter 14b is realized by the DSP 14 executing a program for processing the leakage noise reduction filter 14b, like the localization control filter 14a. In addition, it may be realized by a dedicated processor that performs signal processing for reducing leakage sound with respect to the acoustic signal, similarly to the localization control filter 14a.

  In addition, the storage unit 18 holds a preset pattern that is a content of a predefined acoustic setting. In the present embodiment, the preset pattern is the content of the acoustic setting that is set in the acoustic system 1 when it is desired to increase the acoustic independence of the seat for each of the seats A, B, C, and D. That is, when a preset pattern that is applied to increase the independence of the seat A is read out and set, the volume setting of each speaker and equalization by the DSP are performed so that the acoustic independence of the seat A is increased. Settings are made.

Here, the degree of acoustic independence of the seat is the degree of influence from sound other than the sound by the speaker assigned to the seat on each seat (listening position) where the sound is provided by the sound system 1. That is, the degree of independence corresponds to the magnitude of leakage sound from a speaker that is not assigned to the seat (listening position). The smaller the leakage sound from a speaker not assigned to a seat for a certain seat, the higher the degree of independence. The greater the leakage sound, the lower the degree of independence. The degree of independence may be represented by a predetermined numerical value (level) corresponding to the volume of the leaking sound, but in the present embodiment, the degree of independence is expressed to the user by expressing the measure of the magnitude of the leaking sound in decibels. By displaying a figure whose size or area changes according to the degree of independence, the user can intuitively grasp the independence.

  The display unit 19a outputs an image generated based on the setting content read from the DSP 14 or the like by the control unit 11 or an image for displaying the acoustic independence of each seat, and the operation receiving unit 19b The contents of various operations by the user are accepted. In the present embodiment, as the display unit 19a and the operation receiving unit 19b, a so-called touch panel display 19 in which a display that displays the generated image and a touch panel that receives an operation from the user is integrated is used. As a display system, liquid crystal is used in this embodiment. However, the display mechanism of the display is not limited to the liquid crystal, and it is preferable that an optimum method is appropriately selected from various methods such as plasma and CRT (Cathode Ray Tube) depending on the embodiment. Similarly, as a detection method of the touch panel display, it is preferable that an optimum method is appropriately adopted from various methods such as a resistance film method (pressure-sensitive type) and a capacitance method.

<Process flow>
Next, the flow of the sound setting process in the present embodiment will be described using a flowchart and a display image displayed on the display unit 19a.

  FIG. 2 is a flowchart showing the flow of the sound system setting process according to the present embodiment. The process shown in this flowchart is started when an operation for instructing the setting start is performed by the user and the operation is accepted. In the following description, on the touch panel display 19 on which the navigation screen 40 shown in FIG. 3 is displayed, the process is started by selecting the sound output mode display icon displayed on the upper right of the screen. The processing may be started from the beginning.

  In steps S101 and S102, a transition to the seat selection mode is performed. FIG. 3 is a diagram illustrating a state of the touch panel display 19 on which the navigation screen 40 is displayed in the present embodiment. On the navigation screen 40, a map image 41 used for navigation, a detailed button image 42 for displaying a detailed map, a wide area button image 43 for displaying a wide area map, and the acoustic system 1 are output in the vehicle. A sound output mode display icon 44 indicating the state of sound is included.

  The sound output mode display icon 44 is an icon for displaying the division status of the virtual acoustic space in the vehicle, the type of sound source provided to each seat, and the like so that the user can visually grasp the shape, color, and the like. It is. In the description of the sound system setting process in the present embodiment, it is assumed that sound based on different sound sources and sound settings is provided for the front seats (seats A and B) and the rear seats (seats C and D). The sound output mode display icon 44 shown in FIG. 3 represents a state in which the sound source and sound settings are divided into a front seat and a rear seat by substantially ellipses displayed above and below. For example, the sound input from the CD / DVD drive is output to the front seats (seats A and B), and the sound input from the television broadcast receiver is output to the rear seats (seats C and D). Is output.

The operation receiving unit 19b detects that the sound output mode display icon 44 (see FIG. 3) displayed on the upper right of the touch panel display 19 on which the navigation screen 40 is displayed is touched, thereby entering the seat selection mode. An operation to instruct transition is accepted (S101). When the transition to the seat selection mode is instructed, the display unit 19a generates and displays the seat selection screen 50 shown in FIG. 4 (S102). FIG. 4 is a diagram illustrating a state of the touch panel display 19 on which the seat selection screen 50 is displayed in the present embodiment. The seat selection screen 50 includes a graphic 51 representing a predetermined space (here, a space in the vehicle), and seat icons 52a, 52b, 52c and 52d indicating seats in the predetermined space (seat A, seat B, seat C, respectively). A selection button image 53 for selecting all seats, a setting button image 54 that is touched when the user wants to proceed to the next sound setting step, and the like. Thereafter, the process proceeds to step S103.

  In steps S103 and S104, a seat to be set is selected. The operation receiving unit 19b detects that the user has touched one of the seat icons 52a, 52b, 52c, and 52d indicating the seat at each position via the seat selection screen 50 illustrated in FIG. A seat selection operation is accepted (S103). At this time, a plurality of seats can be selected. When selecting one seat, the user selects one of the seat icons 52a, 52b, 52c, 52d by touching the setting button image 54, or selects one of the seat icons 52a, 52b, 52c and 52d are continuously touched twice. When selecting a plurality of seats, the user touches the icons corresponding to the seats to be selected among the seat icons 52a, 52b, 52c, 52d in any order to select the seats, and sets all the seats to be selected to the selected state. Then, the setting button image 54 is touched. In the present embodiment, it is assumed that the seat icons 52a and 52b are selected.

  Here, “touch” refers to touching a predetermined area on the touch panel display 19 with a fingertip or the like. The operation procedure shown in the present embodiment is an example, and it is preferable that an optimum operation procedure is appropriately adopted depending on the embodiment. For example, a plurality of seats may be selectable by specifying a range. When the seat to be set is determined, the display unit 19a generates the independence setting screen 60 shown in FIG. 5 based on the current sound setting content and displays it on the touch panel display 19 (S104). Thereafter, the process proceeds to step S105.

  FIG. 5 is a diagram showing an independence level setting screen 60 displayed by the display unit 19a in the present embodiment. In the independence level setting screen 60, an area 61 for imagining the acoustic level of independence of seats belonging to each selected group at the currently set volume, human type icons 62a and 62b indicating seats in a predetermined space, 62c, 62d (corresponding to seat A, seat B, seat C, seat D, respectively), a numerical value 63a indicating a measure of the leakage volume in the currently set sound setting, a frame image 63b on which the numerical value 63a is displayed, and a determination button An image 64, a back button image 65, and a border 69 are included. The numerical value 63a and the frame image 63b displayed in the upper row are the independence of the front seat (seats A and B), and the numerical value 63a and the frame image 63b displayed in the lower row are the independence of the rear seats (seats C and D). Corresponding to

  In the acoustic system 1 according to the present embodiment, the user is made to grasp the acoustic independence of each seat by the three means described below. First, the display unit 19a displays the numerical value 63a (unit: dB) indicating the magnitude of the leakage sound estimated from the setting content, thereby allowing the user to easily grasp the degree of independence. The numerical value 63a indicating the magnitude of the leaking sound is a guideline and does not indicate the actual leaking volume. However, in some embodiments, the volume of the leaking sound is grasped with an error microphone or the like, and the actual leaking volume is displayed. It is good to do.

  Further, the display unit 19a allows the user to grasp the degree of acoustic independence of each seat according to the size of the frame image 63b that is a frame in which the numerical value 63a is displayed. The size of the frame image 63b changes according to the degree of independence. That is, as the degree of independence is higher, the size of the frame image 63b on which the numerical value 63a is displayed is displayed larger. Therefore, it can be understood that the sound leaked from this seat is small and the sound leaked from this seat to other seats is large.

Further, the display unit 19a allows the user to grasp the acoustic independence of each seat according to the area of the region 61 where the seat icons 62a, 62b, 62c, and 62d are displayed. The area 61 in which the seat icons 62a, 62b, 62c, and 62d are displayed is divided by a boundary 69 for each selected seat group, and the divided partial areas 61a and 61b are moved by the boundary 69. The area changes according to the degree of independence between the divided partial regions. In other words, the partial areas 61a and 61b are displayed adjacent to each other in the area 61, and the display position of the boundary 69 is changed according to the degree of independence between the partial areas. Since the combined display area of all the divided partial areas 61a and 61b is unchanged, the acoustic independence of the seats belonging to any group is increased, and the area of the partial area is displayed larger. The area of the other partial area is displayed smaller. As a result, the user recognizes the phenomenon that when the degree of independence increases in one seat (leakage sound decreases), the degree of independence decreases in other seats (leakage sound increases), and the sound of each seat is recognized. It is possible to intuitively grasp the relative level relationship of the above independence.

  In steps S105 and S106, sound setting based on the called preset pattern is performed. The operation accepting unit 19b detects that the partial area corresponding to the seat whose independence is to be increased out of the area 61 on the touch panel display 19 is continuously touched twice (hereinafter referred to as a double tap). An operation for calling a preset pattern is accepted (S105). For example, when the user wants to increase the degree of independence of the front seat, the user double taps the partial area 61a corresponding to the front seat, and when the user wants to increase the degree of independence of the rear seat, the partial area 61b corresponding to the rear seat. Double tap. In response to this, the control unit 11 identifies a preset pattern that increases the degree of independence of the seat specified by the operation in step S105, reads the setting value from the storage unit 18, and performs acoustic setting (S106). The preset pattern includes, for example, a setting value for increasing the output volume to a seat whose independence is to be increased, a setting value for decreasing the output volume to a seat other than the seat whose independence is to be increased, and the like.

  In step S107, an image based on the degree of independence changed by the sound setting is displayed on the touch panel display 19. Since the sound setting in step S106 relates to the sound volume or equalizing, the sound volume of the leakage sound for each seat changes with the sound setting, and the independence of the sound of each seat changes. Therefore, the display unit 19a calculates the degree of independence of each seat according to the result of the sound setting, and displays an image based on this degree of independence on the touch panel display 19 (S107). However, without calculating the degree of independence each time the acoustic setting is performed, the correspondence between the setting content by the preset pattern and the degree of independence when the setting content is applied is stored in the storage unit 18 in advance, and this correspondence The degree of independence read according to the above may be displayed.

  FIG. 6 is a diagram illustrating the independence level setting screen 60 after the partial area 61a corresponding to the front seat is double-tapped on the touch panel display 19 on which the independence level setting screen 60 is displayed in the present embodiment. FIG. 7 is a diagram illustrating the independence level setting screen 60 after the partial area 61b corresponding to the rear seat is double-tapped on the touch panel display 19 on which the independence level setting screen 60 is displayed. Thereafter, the processing shown in this flowchart ends. According to the independence setting screen 60 shown in these drawings, the position of the boundary 69 changes and the areas of the partial areas 61a and 61b change as the preset pattern is applied and the acoustic setting is changed. You can see that

  According to the present embodiment, the user can increase the acoustic independence of a desired seat by simply double-tapping a partial area corresponding to the seat whose independence is desired to be increased, and the numerical value displayed on the touch panel display 19. 63a, the frame image 63b, and the area | region 61 can grasp | ascertain intuitively the acoustic independence of a seat through vision.

In the above description using the flowchart, the independence level of the seat is changed by reading and setting preset preset patterns. In addition, the user directly specifies the independence level. By providing an interface that can perform the above-described, it may be possible to set detailed independence. FIG. 8 is a flowchart showing the flow of the detailed setting process according to the present embodiment. The process shown in the flowchart is a process that may be executed following the sound system setting process described with reference to the flowchart shown in FIG. 2, and is performed via the independence degree setting screen 60 displayed on the touch panel display 19. Display and operation are accepted.

  FIG. 9 is a diagram showing a method for directly specifying the degree of independence by a user operation via the independence degree setting screen 60 in the present embodiment. The operation accepting unit 19b detects an operation by which the user touches the area where the numerical value 63a or the frame image 63b on the touch panel display 19 is displayed, thereby increasing the degree of independence of the partial seat to be operated by one step. Accept (S201). Upon detection of the user operation, the control unit 11 changes the acoustic setting so that the degree of independence of the partial seat related to the touched numerical value 63a or the frame image 63b is increased by one step (S202). Note that the degree of independence is determined by the volume of sound between multiple seats and the level of leaking sound according to the acoustic characteristics. Therefore, when the degree of independence of some seats related to operation increases, Independence is reduced. The display unit 19a updates the display of the numerical value 63a, the frame image 63b, and the area 61 displayed on the touch panel display 19 (S203). Thereafter, the processing shown in this flowchart ends.

  In addition, by allowing the user to individually set the output volume for a part of the seats, the acoustic independence of the seats may be adjusted. FIG. 10 is a flowchart showing the flow of the detailed setting process according to the present embodiment. The process shown in the flowchart is a process that may be executed following the sound system setting process described with reference to the flowchart shown in FIG. 2, and is performed via the independence degree setting screen 60 displayed on the touch panel display 19. Display and operation are accepted.

  FIG. 11 is a diagram illustrating a method of displaying the volume gauge 66 by a user operation via the independence level setting screen 60 in the present embodiment. The operation receiving unit 19a detects that the user has double-tapped the area where the numerical value 63a or the frame image 63b on the touch panel display 19 is displayed (S301). In response to the detection of the user operation, the display unit 19a displays the volume gauge 66 on the touch panel display 19 (S302). The volume gauge 66 is a volume gauge 66 capable of adjusting the volume of output sound for a part of seats related to a user operation.

  FIG. 12 is a diagram illustrating a method for designating an output volume for a partial seat by a user operation using the volume gauge 66 in the present embodiment. The operation reception unit 19b detects that the volume gauge on the touch panel display 19 is touched by the user (S303). At this time, the operation reception unit 19b also detects which part of the volume gauge the user has touched. In response to the detection of the user operation, the control unit 11 adjusts the output volume to the partial seat corresponding to the volume gauge by the part in the volume gauge touched by the user (S304). Specifically, if a touch on the upper part of the volume gauge is detected, the output volume to the corresponding part of the seat is increased, and if a touch on the lower part of the volume gauge is detected, the corresponding action is taken. The output volume to some seats is lowered. Further, when the output volume is changed, the degree of acoustic independence in each seat changes. Therefore, the display unit 19a updates the display of the numerical value 63a, the frame image 63b, and the region 61 displayed on the touch panel display 19 in response to the change in the output volume (S305). Thereafter, the processing shown in this flowchart ends.

That is, according to the acoustic system 1 according to the present embodiment, the display of the numerical value 63a, the frame image 63b, and the region 61 allows the user to intuitively grasp the change in the independence, and the detailed independence (leakage volume). Adjustment means can be provided. Further, by using it together with the method of reading and setting the preset pattern, it is possible to first call the preset pattern and roughly change the degree of independence, and then perform detailed adjustment. According to the present embodiment, setting of output sound (volume, equalizing, etc.) for each seat is performed by a user operation, and the numerical value 63a, the frame image 63b, and the region 61 are displayed in accordance with the change in independence accompanying this setting. Change. For this reason, according to the present embodiment, the actual output sound is obtained through the auditory sense while the displayed numerical value 63a, the frame image 63b, and the region 61 are used to visualize the independence of each seat through the visual sense. By confirming and repeating this operation, it is possible to easily find a setting suitable for the listener's feeling that varies depending on the individual.

  In the present embodiment, processing in a state where sound based on different sound sources and sound settings is provided for the front seats (seats A and B) and the rear seats (seats C and D) has been described. The sound system 1 according to the sound system 1 is capable of providing sound based on different sound sources and sound settings in each of the seats A, B, C, and D, and is divided into virtual sound spaces different from the above description. It is also possible to perform similar processing and display even in the sound source provision status.

  FIG. 13 is a diagram showing an independence setting screen 60 displayed by the display unit 19a in a state where sound based on different sound sources and sound settings is provided for each seat in the present embodiment. According to the independence setting screen 60 shown in FIG. 13, areas 61 in which seat icons 62 a, 62 b, 62 c, and 62 d corresponding to seats A, B, C, and D are displayed are separated from each other by a boundary 69. ing. And the area of partial area | region 61a, 61b, 61c, 61d changes because the boundary 69 moves according to the level of the independence of seat A, B, C, D. FIG. Thereby, the user can intuitively grasp the relative height relationship of the acoustic independence of each seat. In addition, although this embodiment demonstrated the acoustic system 1 provided in a vehicle of four capacity | capacitance, this invention is not restricted to a vehicle-mounted acoustic system, You may be applied to the acoustic system which can provide an independent acoustic space. Even when provided as an in-vehicle acoustic system, it is preferable to select the number of persons and the selection of the listening position in the vehicle as appropriate according to the embodiment.

<Other embodiments>
FIG. 14 is a diagram showing an independence level setting screen 60b displayed by the display unit 19a in the present embodiment. Specifically, in the present embodiment, the display unit 19a performs the degree of independence shown in FIG. 14 in place of the degree of independence setting screen 60 shown in FIG. 5 in the process corresponding to step S104 of the sound system setting process. The setting screen 60b is displayed. In addition to the area 61, icons 62a, 62b, 62c, 62d, numerical value 63a, frame image 63b, border 69, etc., which are the same display contents as the independence setting screen 60, the independence setting screen 60b includes preset buttons. An image 67 is included.

  According to the present embodiment, a plurality of preset button images 67 are displayed on the independence setting screen 60b, and the preset button image 67 and the preset pattern are associated with each other, so that the setting content desired by the user can be stored as a preset pattern. I can do it. The preset pattern stored here can be called and set by touching the preset button image 67.

  FIG. 15 is a flowchart showing the flow of setting content saving processing according to the present embodiment. The process shown in this flowchart is a process that may be executed following the sound system setting process described with reference to the flowchart shown in FIG. 2, and is performed via the independence degree setting screen 60 b displayed on the touch panel display 19. Display and operation are accepted.

  The operation accepting unit 19b confirms that one of the plurality of preset button images 67 on the touch panel display 19 is long pressed (the touched state is maintained for a while while the preset button image 67 is touched). By detecting this, an operation for storing a preset pattern by the user is accepted (S401). Upon detection of the user operation, the control unit 11 reads the content of the currently applied sound setting from the DSP 14 or the storage unit 18 and stores it as a preset pattern corresponding to the preset button image 67 related to the received operation. The data is stored in the unit 18 (S402).

  The preset pattern stored in this way can be recalled by a user operation. FIG. 16 is a flowchart showing a flow of setting content call processing according to the present embodiment. The process shown in this flowchart is a process that may be executed following the sound system setting process described with reference to the flowchart shown in FIG. 2, and is performed via the independence degree setting screen 60 b displayed on the touch panel display 19. Display and operation are accepted.

  The operation receiving unit 19b detects that the user has touched the preset button image 67 on the touch panel display 19, thereby receiving a preset pattern calling operation by the user (S501). In response to this, the control unit 11 specifies a preset pattern corresponding to the touched preset button image 67, reads the setting value from the storage unit 18, and performs acoustic setting (S502). In addition, since the degree of acoustic independence in each seat changes when the sound setting is performed, the display unit 19a receives a numerical setting 63a and a frame image displayed on the touch panel display 19 in response to the sound setting being performed. The display of 63b and the area 61 is updated (S503).

  According to the present embodiment, it is possible to save or recall the contents of the sound settings that can reproduce the independence adjusted by an intuitive operation with a simple operation.

It is a figure which shows the structure of the acoustic system which concerns on embodiment. It is a flowchart which shows the flow of the acoustic system setting process which concerns on embodiment. It is a figure which shows the mode of the touchscreen display in which the navigation screen was displayed in embodiment. It is a figure which shows the mode of the touchscreen display on which the seat selection screen was displayed in embodiment. It is a figure which shows the independence degree setting screen displayed by the display part in embodiment. In embodiment, it is a figure which shows the independence degree setting screen after predetermined operation was performed with the touchscreen display in which the independence degree setting screen was displayed. In embodiment, it is a figure which shows the independence degree setting screen after predetermined operation was performed with the touchscreen display in which the independence degree setting screen was displayed. It is a flowchart which shows the flow of the detailed setting process which concerns on embodiment. In an embodiment, it is a figure showing a method of designating independence directly by user operation via an independence degree setting screen. It is a flowchart which shows the flow of the detailed setting process which concerns on embodiment. In an embodiment, it is a figure showing a method of displaying a volume gauge by user operation via an independence degree setting screen. In embodiment, it is a figure which shows the method of designating the output volume with respect to some seats by user operation using a volume gauge. In embodiment, it is a figure which shows the independence degree setting screen displayed in the state in which the sound based on a different sound source and sound setting is provided by each seat. It is a figure which shows the independence degree setting screen displayed by the display part in embodiment. It is a flowchart which shows the flow of the setting content preservation | save process which concerns on embodiment. It is a flowchart which shows the flow of the setting content call process which concerns on embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sound system 11 Control part 14 DSP (Digital Signal Processor)
17a, 17b, 17c, 17d Speaker 18 Storage unit 19 Touch panel display 19a Display unit 19b Operation accepting unit

Claims (7)

Sound output means for outputting different sounds to a plurality of listening positions;
The degree of acoustic leakage sound output to the listening position excluding the first listening position by the sound output means at the first listening position among the plurality of listening positions, and the plurality of listening positions. Display means for displaying the degree of acoustic leaking sound output to the listening position excluding the second listening position by the sound output means at the second listening position of the second listening position so as to be visually comparable.
An acoustic system comprising: The display means displays a first image indicating a degree of leakage sound to the first listening position and a second image indicating a degree of leakage sound to the second listening position,
In the comparison display by the display means, the first image and the second image are in a relationship between the degree of sound leaked to the first listening position and the degree of sound leaked to the second listening position. Have a corresponding relative size,
The acoustic system according to claim 1. In the display by the display means, the first image and the second image are displayed adjacent to each other via a boundary in a predetermined display area corresponding to a space in which the plurality of listening positions are arranged. ,
The display means displays the boundary at a position determined based on the relationship between the degree of leakage sound to the first listening position and the degree of leakage sound to the second listening position.
The acoustic system according to claim 2. Accepting means for accepting an operation by a user;
In accordance with the contents of the operation received by the receiving means, an output sound setting relating to the sound output by the sound output means for any one of the first listening position and the second listening position Further comprising setting means for performing
The display means, depending on the content of the output sound setting by the setting means, causes the sound output from the sound output means to leak to the first listening position and to the second listening position. Display the level of leaking sound in a way that can be contrasted visually.
The acoustic system according to any one of claims 1 to 3. In accordance with the content of the operation received by the receiving means, further comprising a setting content storage means for storing the content of the output sound setting related to the sound output by the sound output means,
The setting unit reads the setting content stored by the setting content storage unit according to an operation for calling the stored setting content received by the receiving unit, and performs output sound settings.
The acoustic system according to claim 4. A method of setting an acoustic system that outputs different sounds to a plurality of listening positions,
A reception step for accepting an operation by the user;
According to the contents of the operation received in the receiving step, the sound system outputs the sound to any one of the first listening position and the second listening position among the plurality of listening positions. A setting step for performing output sound settings related to sound;
Depending on the content of the output sound setting in the setting step, the degree of acoustic leakage sound output to the listening position other than the first listening position by the sound output means in the first listening position; A display step of displaying the degree of acoustic leakage sound output to the listening position excluding the second listening position by the sound output means at the second listening position so as to be visually comparable; and
A method for setting an acoustic system. According to the content of the operation received by the receiving means, further comprising a setting content saving step for saving the content of the output sound setting related to the sound output by the sound output means,
In the setting step, according to an operation for calling the saved setting content accepted in the accepting step, the setting content saved by the setting content saving step is read, and output sound setting is performed.
The method for setting an acoustic system according to claim 6.

Images