JP4115855B2 - Acoustic parameter setting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an acoustic parameter setting device for setting various acoustic parameters.
[0002]
[Prior art]
In recent in-vehicle audio devices, it has become possible to set optimal acoustic parameters, set optimal acoustic spaces for each vehicle, and obtain acoustic characteristics that suit user preferences. There is something. For example, when the coefficient data of the adaptive filter included in the audio device is considered as one of the acoustic parameters, by setting the value of this coefficient data to an optimum value, an acoustic characteristic that has desired acoustic characteristics at the listening position is obtained. It becomes possible to realize space. By the way, since the value of such coefficient data is different for each vehicle type, a data distribution system capable of acquiring the value of coefficient data suitable for each vehicle type via a network is known (for example, patent document). 1). In this data distribution system, by specifying a vehicle type on the vehicle side, it is possible to obtain a coefficient data value that is optimal for this vehicle type.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-307592 (page 3-5, FIG. 1-3)
[0004]
[Problems to be solved by the invention]
By the way, in the data distribution system disclosed in Patent Document 1 described above, since the setting target is the coefficient data of the adaptive filter, it is only necessary to specify the vehicle type data that can specify the shape of the vehicle interior space. If an attempt is made to set the acoustic parameters in the same manner, there is a problem that the operation for the setting becomes complicated. For example, it is possible to set the optimal acoustic characteristics by specifying the audio device and system configuration to be used, the speaker to be used, etc., and acquiring the corresponding acoustic parameter setting information via the network. In order to do this, it is necessary to check the model numbers and product names of these products. Since there are few users who remember the model numbers of audio devices and speakers, etc., usually the manual book or the label attached to the housing of the product is seen, and the work itself is complicated, In many cases, it is difficult to see the label etc. unless it is disassembled and removed after being installed in the passenger compartment.
[0005]
The present invention has been created in view of the above points, and an object of the present invention is to provide an acoustic parameter setting device that can eliminate the complexity of operations necessary for setting acoustic parameters.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problem, the acoustic parameter setting device according to the present invention includes a configuration acquisition unit that acquires configuration information including identification information and connection information of each product constituting the audio device, and a search request including the identification information. Is acquired by a search request transmission means for transmitting information to a search server connected via a network, an information reception means for receiving product information of each product corresponding to identification information sent back from the search server, and a configuration acquisition means Acoustic parameter setting means for setting the acoustic parameters of the audio device based on the connection information thus obtained and the product information received by the information receiving means. As a result, various necessary information is automatically acquired and acoustic parameters are set, so that the user of the audio device does not need to make detailed settings, and the operations required for setting the acoustic parameters are complicated. Can be eliminated.
[0007]
The above-described audio device is mounted on the vehicle, and the search request transmitted to the search server by the search request transmitting unit includes the vehicle name and year of the vehicle on which the audio device is mounted. In addition to the product information, the information received by the information receiving means includes vehicle information searched based on the vehicle name and year in the search server, and the acoustic parameter setting means includes connection information, product It is desirable to set the acoustic parameters of the audio device based on the information and the vehicle information. As a result, since detailed vehicle information such as different mounting positions for each vehicle is automatically acquired, setting of acoustic parameters of an in-vehicle audio device that has been complicated to set up with many input items in the past In addition, the complexity of necessary operations can be eliminated.
[0008]
The configuration acquisition unit described above determines whether or not each product constituting the audio device has been changed. When the configuration acquisition unit determines that there is a change, the search request transmission unit performs a search request transmission operation. It is desirable that the information receiving operation by the information receiving unit and the acoustic parameter setting operation by the acoustic parameter setting unit are executed . As a result, not only when the audio device is newly installed, but also when the configuration is changed by adding or changing a speaker or the like, the audio after the configuration change is performed without performing a complicated operation. It is possible to set the acoustic parameters of the device.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An acoustic parameter setting system according to an embodiment to which the present invention is applied will be described below with reference to the drawings.
FIG. 1 is a diagram illustrating a configuration of an acoustic parameter setting system according to an embodiment. The acoustic parameter setting system shown in FIG. 1 includes an audio device 100 and an in-vehicle server 200 mounted on each vehicle, and a search server that provides the in-vehicle server 200 with product information and vehicle information necessary for setting the acoustic parameters of the audio device 100. 300. The in-vehicle server 200 and the search server 300 are connected via a predetermined network 400. Note that the network 400 in this embodiment includes various communication networks such as a mobile telephone network, a wireless LAN, and the Internet. Also, it is assumed that the in-vehicle server 200 and the network 400 are connected using, for example, a mobile phone (or a wireless LAN terminal or the like) provided in the vehicle.
[0010]
In the acoustic parameter setting system described above, the audio device 100 sends the model number of each product included in the audio device 100 and connection information of each product to the in-vehicle server 200. The in-vehicle server 200 as the acoustic parameter setting device extracts the model number from these pieces of information sent from the audio device 100 and transmits it to the search server 300 together with the vehicle name and year of the vehicle on which the in-vehicle server 200 is mounted. To do. The search server 300 searches for specifications related to the setting of acoustic parameters such as frequency characteristics of each product based on the model number sent from the vehicle, and the vehicle identified by these based on the vehicle name and year The audio device 100 mounting position (speaker mounting position, etc.) is searched, and these search results are sent back to the in-vehicle server 200. In the in-vehicle server 200, based on the specifications of each product and the attachment position of each product sent from the search server 300, and the connection information of each product sent from the audio device 100, the acoustic parameters in the audio device 100 Is set.
[0011]
Next, details of the in-vehicle device including the audio device 100 and the in-vehicle server 200 will be described. FIG. 2 is a diagram illustrating a detailed configuration of the in-vehicle device.
The in-vehicle device shown in FIG. 2 includes an audio device 100 having a head unit (H / U) 110, an amplifier unit 120, and a plurality of speakers 130, and an in-vehicle server 200 connected to the audio device 100 via an in-vehicle LAN 250. I have.
[0012]
The head unit 110 includes an operation unit 111, a CD (compact disc) player 112, an MD (mini disc) player 113, an FM / AM tuner 114, an audio control unit 115, a display device 116, and a communication control unit 117. Yes. The operation unit 111 is used by the user to give various operation instructions to the audio apparatus 100, and includes various operation keys. The CD player 112 reproduces various music recorded on the CD in response to the operation instruction given from the audio control unit 115, and outputs an audio signal to the amplifier unit 120. Similarly, the MD player 113 reproduces various music recorded on the MD in response to the operation instruction given from the audio control unit 115, and outputs an audio signal to the amplifier unit 120. The FM / AM tuner 114 generates an audio signal by receiving and demodulating FM broadcast or AM broadcast in response to the operation instruction given from the audio control unit 115, and directs the generated audio signal to the amplifier unit 120. Output. The audio control unit 115 controls the entire head unit 110 and the amplifier unit 120 in response to an operation instruction given to the operation unit 111, and includes a CPU and a memory. The display device 116 displays details of operations performed using the operation unit 111 and operation states of the CD player 112, the MD player 113, and the FM / AM tuner 114. The communication control unit 117 performs a process of transmitting / receiving data between the head unit 110 and the amplifier unit 120 or the in-vehicle server 200 via the in-vehicle LAN 250.
[0013]
The amplifier unit 120 selectively amplifies audio signals input from various music sources (CD player 112, MD player 113, FM / AM tuner 114), and reflects the acoustic parameters set by the in-vehicle server 200. Performs processing such as sound quality correction.
[0014]
FIG. 3 is a diagram showing a detailed configuration of the amplifier unit 120. As shown in FIG. 3, the amplifier unit 120 includes a signal switching unit 121, a plurality of equalizer units (EQ) 122, a plurality of signal delay units 123, a plurality of amplifiers 124, a filter coefficient setting unit 125, a delay amount setting unit 126, An amplifier control unit 127 and a communication control unit 128 are included.
[0015]
The signal switching unit 121 selects and outputs one of the audio signals input from various music sources. The selected audio signal is input in parallel to a plurality of equalizer sections 122 in the subsequent stage. Each equalizer unit 122 is for adjusting the gain of each of a plurality of frequency bands. For example, a plurality of band pass filters having different gains with different center frequencies of the pass band and each filter output are combined. And a mixer. In addition, each equalizer unit 122 is used for each rough frequency band, and the equalizer unit 122 corresponding to the signal line to which the low-frequency speaker 130 can be connected has each frequency obtained by dividing the low frequency into a plurality of frequencies. Band gain adjustment is performed. Similarly, the equalizer section 122 corresponding to the signal line to which the mid-range speaker 130 can be connected performs gain adjustment of each frequency band obtained by further dividing the mid-range into a plurality of parts. The equalizer section 122 corresponding to the signal line to which the high frequency speaker 130 can be connected performs gain adjustment of each frequency band obtained by further dividing the high frequency into a plurality of frequencies.
[0016]
Each signal delay unit 123 has a one-to-one correspondence with the preceding equalizer unit 122, and outputs the audio signal output from the corresponding equalizer unit 122 with a predetermined delay. The delay amount of each signal delay unit 123 can be arbitrarily set. Each amplifier 124 amplifies and outputs the audio signal output from the preceding signal delay unit 123. Connected to the output terminal of each amplifier 124 are the models 130 purchased by the user and the number of speakers 130.
[0017]
The filter coefficient setting unit 125 sets the filter coefficient of each band pass filter included in each of the plurality of equalizer units 122. Thereby, the gain setting for each frequency band in each equalizer unit 122 is performed. The delay amount setting unit 126 sets the delay amount of each signal delay unit 123. The amplifier control unit 127 specifies the audio signal selected by the signal switching unit 121 and specifies the setting contents of the filter coefficient setting unit 125 and the delay amount setting unit 126. In addition, the amplifier control unit 127 performs a process of collecting the product model numbers and connection information of the amplifier unit 120 itself and the connected speaker 130 and transmitting them to the in-vehicle server 200. For example, an IC chip for product identification is mounted on the amplifier unit 120 and each speaker 130, and model number data recorded on the IC chip is read by the amplifier control unit 127. Further, the connection state (presence / absence of connection) between each amplifier 124 and speaker 130 is detected, and connection information indicating which model number of speaker 130 is connected to which output terminal is created. The communication control unit 128 performs processing for transmitting and receiving data between the amplifier unit 120 and the head unit 110 or the in-vehicle server 200 via the in-vehicle LAN 250.
[0018]
The in-vehicle server 200 shown in FIG. 2 includes a server control unit 210 and communication control units 220 and 222. The server control unit 210 includes a CPU and a memory, and controls the entire in-vehicle server 200. Specifically, the server control unit 210 acquires configuration information including a model number and connection information sent from the audio device 100, transmits a necessary search request to the search server 300, and is sent back. Process to receive product information and vehicle information. For this purpose, the server control unit 210 includes a configuration acquisition unit 212, a search request transmission unit 214, an information reception unit 216, and an acoustic parameter setting unit 218. The configuration acquisition unit 212 acquires configuration information (the model number and connection information of each product) of the audio device 100. The search request transmission unit 214 transmits a search request including the model number included in the configuration information, the vehicle name of the vehicle on which the in-vehicle server 200 is mounted, and the model year to the search server 300. The information receiving unit 216 receives product information and vehicle information sent back from the search server 300 in response to the search request. The acoustic parameter setting unit 218 sets various acoustic parameters related to the audio device 100 based on the product information and vehicle information received by the information receiving unit 216 and the connection information included in the configuration information acquired by the configuration acquisition unit 212. I do.
[0019]
In the present embodiment, settings relating to time collection, crossover, and parametric equalizer are performed as three types of acoustic parameters. Time collection refers to when the audio signal output from the amplifier unit 120 is converted into audio sound by each speaker 130 and emitted into the vehicle interior space, taking into account the signal line and mounting position of each speaker 130. It is an acoustic parameter for adjusting to reach the listening position at the same time. Specifically, the acoustic parameter is set by designating the delay amount of each signal delay unit 123 by the delay amount setting unit 126.
[0020]
The crossover is an acoustic parameter for adjusting the output frequency characteristic of the amplifier unit 120 so as to match the input / output characteristic of each speaker 130. Specifically, the acoustic parameter is set by designating the filter coefficient for each frequency band of each equalizer section 122 by the filter coefficient setting section 125. By appropriately adjusting the acoustic parameters, for example, problems such as damage caused by inputting an excessively low frequency audio signal to the high frequency speaker 130 can be eliminated.
[0021]
The parametric equalizer is an acoustic parameter for adjusting the output frequency characteristic of the amplifier unit 120 in order to perform sound quality adjustment suitable for each music genre. Specifically, as in the case of crossover, the acoustic coefficient is set by designating the filter coefficient for each frequency band of each equalizer section 122 by the filter coefficient setting section 125.
[0022]
Further, one communication control unit 220 shown in FIG. 2 performs a process of transmitting / receiving data between the in-vehicle server 200 and the head unit 110 or the amplifier unit 120 via the in-vehicle LAN 250. The other communication control unit 222 performs processing necessary for the in-vehicle server 200 to perform various data communications such as configuration information and acoustic parameter setting information with the search server 300 via the network 400. For example, a mobile telephone (not shown) is externally attached to the communication control unit 222.
[0023]
Next, a detailed configuration of the search server 300 will be described. As illustrated in FIG. 1, the search server 300 includes a server control unit 310, a search DB (database) 312, and a communication control unit 314.
When a search request is sent from the in-vehicle server 200, the server control unit 310 searches based on the model number of each product constituting the audio device 100 included in the search request, and the vehicle name and year of the vehicle. To send back product information and vehicle information. The server control unit 310 includes a CPU and a memory, and performs a predetermined control operation by executing a predetermined program. The search DB 312 stores product information corresponding to each model number and vehicle information corresponding to each vehicle name and year. In this embodiment, the description is given assuming that one search server 300 is connected to the network 400. However, a search server related to the vehicle product is provided for each manufacturer of the audio device 100 and each manufacturer of the vehicle. These manufacturers may manage the detailed information, and may inquire each manufacturer from the search server 300 to obtain necessary information.
[0024]
The configuration acquisition unit 212 described above corresponds to the configuration acquisition unit, the search request transmission unit 214 corresponds to the search request transmission unit, the information reception unit 216 corresponds to the information reception unit, and the acoustic parameter setting unit 218 corresponds to the acoustic parameter setting unit.
The acoustic parameter setting system of the present embodiment has such a configuration, and the operation thereof will be described next.
[0025]
FIG. 4 is a flowchart showing an operation procedure of the server control unit 210 in the in-vehicle server 200. The configuration acquisition unit 212 in the server control unit 210 determines whether or not the audio device 100 is newly attached (step 100). When the audio device 100 is newly attached immediately after purchase of the vehicle or the like, an affirmative determination is made, and the configuration acquisition unit 212 determines the model number of the newly installed amplifier unit 120, the model number of each speaker 130, and the amplifier unit 120. And configuration information including connection information between each speaker 130 (step 101). For example, these pieces of configuration information can be acquired by making an inquiry to the amplifier control unit 127 in the amplifier unit 120.
[0026]
If the audio device 100 is not newly attached, a negative determination is made in step 100, and then the configuration acquisition unit 212 determines whether there is a change in configuration information for the audio device 100 that is already attached. It is determined whether or not (step 102). If there is no change in the configuration information, a negative determination is made in the determination of step 102, and the process returns to step 100 to repeat the determination of whether or not the audio device 100 is newly attached.
[0027]
Further, when the configuration information of the audio device 100 is changed (for example, when the amplifier unit 120 itself is changed to another model by replacement or when the speaker 130 is additionally purchased), the determination in step 102 is affirmative. A determination is made and the configuration acquisition unit 212 acquires the changed configuration information (step 103).
[0028]
After the new or changed configuration information is acquired in this way, the search request transmission unit 214 searches for a search request including the model number included in the acquired configuration information, and the vehicle name and year of the vehicle. Transmit to 300 (step 104). For vehicle type and year type data, the vehicle type / year type information already specified when the in-vehicle server 200 is attached is used, or the information is recorded in a built-in memory of an engine control unit (not shown). If so, the information can be read out and used.
[0029]
When a search request is sent from the in-vehicle server 200 mounted on any vehicle, the server control unit 310 in the search server 300 searches for product information based on the model number included in the search request, and The vehicle information is searched based on the name and the year, and the search results are sent back to the in-vehicle server 200 that is the transmission source of the search request.
[0030]
The information receiving unit 216 in the server control unit 210 of the in-vehicle server 200 determines whether or not the product information and the vehicle information sent back from the search server 300 are received after the search request is transmitted (step 105) This determination is repeated until reception. When product information and vehicle information corresponding to the search request are sent back from the search server 300, an affirmative determination is made in step 105, and the acoustic parameter setting unit 218 then receives the received product information and vehicle information. Then, based on the connection information acquired from the audio device 100, optimal acoustic parameter setting processing is performed (step 106). Thereafter, the process returns to step 100 and the determination of whether or not the audio device 100 is newly attached is repeated.
[0031]
As described above, the in-vehicle server 200 according to the present embodiment automatically acquires various necessary information and sets the acoustic parameters, so that the user of the audio device 100 does not need to perform detailed settings. The complexity of the operation necessary for setting the acoustic parameters can be eliminated. In particular, since the setting of the acoustic parameters is automated, it is not necessary to remove these products in order to see the model numbers of the speaker 130 and the amplifier unit 120 that are already installed in the vehicle interior. The time and effort required can be greatly reduced.
[0032]
Further, not only when the audio device 100 is newly installed, but also when the configuration of the audio device 100 is changed by adding or changing the speaker 130 or the like, without performing complicated operations. It is possible to set the acoustic parameters of the audio device 100 after the configuration change.
[0033]
In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, the case where the acoustic parameter of the audio device 100 mounted on the vehicle is set has been described. However, when the acoustic parameter of the audio device used for other uses and places such as home is set. The present invention can also be applied. In that case, the operation of the in-vehicle server 200 can be performed by a personal computer or another computer.
[0034]
In the above-described embodiment, three types of time collection, crossover, and parametric equalizer are considered as the acoustic parameters to be set. However, some of these are set, or other acoustic parameters are set. You may make it perform.
[0035]
【The invention's effect】
As described above, according to the present invention, since various necessary information is automatically acquired and the acoustic parameters are set, the user of the audio device does not need to perform detailed settings, and the acoustic parameters The complexity of the operation required for setting can be eliminated.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration of an acoustic parameter setting system according to an embodiment.
FIG. 2 is a diagram showing a detailed configuration of an in-vehicle device.
FIG. 3 is a diagram illustrating a detailed configuration of an amplifier unit.
FIG. 4 is a flowchart showing an operation procedure of a server control unit in the in-vehicle server.
[Explanation of symbols]
100 Audio device 110 Head unit (H / U)
120 Amplifier unit 122 Equalizer (EQ)
123 Signal delay unit 124 Amplifier 125 Filter coefficient setting unit 126 Delay amount setting unit 127 Amplifier control unit 128, 220, 222, 314 Communication control unit 200 In-vehicle server 210, 310 Server control unit 212 Configuration acquisition unit 214 Search request transmission unit 216 Information Receiving unit 218 Acoustic parameter setting unit 300 Search server 312 Search DB (database)
400 network

Claims (3)

Configuration acquisition means for acquiring configuration information including identification information and connection information of each product constituting the audio device;
Search request transmitting means for transmitting a search request including the identification information to a search server connected via a network;
Information receiving means for receiving product information of each product corresponding to the identification information sent back from the search server;
An acoustic parameter setting unit configured to set an acoustic parameter of the audio device based on the connection information acquired by the configuration acquisition unit and the product information received by the information reception unit;
An acoustic parameter setting device comprising: In claim 1,
The audio device is mounted on a vehicle,
The search request transmitted to the search server by the search request transmission means includes the vehicle name and year of the vehicle on which the audio device is mounted,
In addition to the product information, the information received by the information receiving means includes vehicle information searched in the search server based on the vehicle name and the model year,
The acoustic parameter setting device is configured to set an acoustic parameter of the audio device based on the connection information, the product information, and the vehicle information. In claim 1 or 2,
The configuration acquisition unit determines whether or not each product constituting the audio device is changed,
When it is determined that there is a change by the configuration acquisition means, the search request transmission operation by the search request transmission means, the information reception operation by the information reception means, and the acoustic parameter setting operation by the acoustic parameter setting means An acoustic parameter setting device characterized in that is executed .

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