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JP2005086686

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DESCRIPTION JP2005086686
PROBLEM TO BE SOLVED: To provide an electronic device capable of adjusting a frequency
characteristic of sound output by a speaker easily and in a short time. SOLUTION: Characteristic
information related to a frequency characteristic of sound outputted from a speaker 12 is
supplied from an in-vehicle device 2 to a communication terminal device 3 through a memory
stick, and then transmitted to a server device 5 through the Internet 4. Be done. The server
device 5 obtains a parameter for determining the frequency characteristic of the sound outputted
by the speaker 12 based on the characteristic information. This parameter is transmitted to the
communication terminal device 3 via the Internet 4 and then supplied to the in-vehicle device 2
via the memory stick. The voice characteristic adjustment unit 18 of the in-vehicle device 2
makes the sound pressure frequency characteristic of the voice flat, for example, so that the
frequency characteristic of the voice outputted by the speaker 12 becomes optimal based on the
parameters supplied from the server device 5. Adjust to become [Selected figure] Figure 1
Electronic device
[0001]
The present invention relates to an electronic device such as an audio device which reproduces a
compact disk (abbreviation: CD) or the like.
[0002]
A car audio system according to the prior art (hereinafter sometimes referred to simply as "audio
system") is connected to the center server via the Internet.
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1
Pink noise is output from the speaker of the audio system mounted on the vehicle, and the
output pink noise is collected using the microphone of the audio system. The collected pink noise
is analyzed by the microcomputer to obtain data on the frequency characteristics of the sound in
the vehicle. The data on the frequency characteristic of the voice is transmitted to the center
server via the Internet. The center server receives the data transmitted from the audio system,
and holds the received data as a sound database. The center server extracts data for adjusting the
acoustic characteristic of the audio system according to the data from the acoustic database
based on the data on the frequency characteristic transmitted from the audio system, and
extracts the extracted data through the Internet Send to the audio system through. The audio
system receives the data for adjusting the acoustic characteristic transmitted from the center
server, and adjusts the acoustic characteristic of the audio system based on the received data
(see, for example, Patent Document 1).
[0003]
JP 2002-67815 A
[0004]
In the prior art, each time the acoustic characteristics of the audio system are adjusted, the pink
noise output from the speaker is collected using a microphone, and the collected pink noise is
analyzed to obtain the sound in the vehicle. Data related to frequency characteristics is acquired.
Then, this data is transmitted to the center server, and the acoustic characteristics of the audio
system are adjusted based on the data for adjusting the acoustic characteristics of the audio
system transmitted from the center server.
[0005]
However, since the data output from the speaker and related to the frequency characteristic of
the sound acquired in the vehicle changes depending on the position of the speaker outputting
the sound, the distance from the position of the microphone to the installation position of the
speaker, etc. In the method of adjusting the acoustic characteristics of the audio system in the
above, it is difficult to adjust the acoustic characteristics of the audio system according to the
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2
situation in the vehicle such as the riding position of the listener in one adjustment operation. For
this reason, in the prior art, until the acoustic characteristics of the audio system according to the
situation in the vehicle, such as the riding position of the listener, are realized, the operation of
acquiring data related to the frequency characteristics of the voice in the vehicle The operation of
adjusting the acoustic characteristics of the audio system based on the data for adjusting the
acoustic characteristics in accordance with the acquired data has to be repeated.
[0006]
Therefore, the task of acquiring data relating to the frequency characteristic of the voice and the
task of adjusting the acoustic characteristic of the audio system are bothersome for the user, and
until the acoustic characteristic of the audio system according to the situation in the vehicle is
realized. There is a problem that it takes a lot of time.
[0007]
An object of the present invention is to provide an electronic device capable of adjusting the
frequency characteristic of sound output by a speaker easily and in a short time.
[0008]
The present invention comprises an audio output means for outputting audio, an audio input
means for inputting audio output from the audio output means, and a characteristic output
means for outputting characteristic information related to frequency characteristics of the input
audio to an external device. A parameter input unit for inputting a parameter for determining the
frequency characteristic of the voice output by the voice output unit; a voice characteristic
adjustment unit for adjusting the frequency characteristic of the voice output by the voice output
unit based on the input parameter; An electronic device characterized by including:
[0009]
Further, the invention is characterized in that the characteristic output means is a recording
means to which the recording medium is detachably mounted and which records information on
the mounted recording medium.
[0010]
Furthermore, the present invention is characterized in that the parameter input means is a
reproduction means to which the recording medium is detachably attached and which
reproduces the information recorded on the attached recording medium.
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[0011]
Furthermore, the present invention is characterized in that the recording medium is a
semiconductor memory.
Furthermore, the present invention is characterized in that the characteristic output means is a
wireless communication means that performs wireless communication with an external device
via a wireless radio wave and transmits information to the external device.
[0012]
Furthermore, the present invention is characterized in that the parameter input means is a
wireless communication means that performs wireless communication with an external device
via a wireless radio wave and receives information transmitted from the external device.
[0013]
According to the present invention, a voice is output from the voice output unit, and the output
voice is input to the voice input unit.
The characteristic output means outputs the characteristic information related to the frequency
characteristic of the input voice to the external device.
In the external device, a parameter for determining the frequency characteristic of the sound
outputted by the sound output means is obtained based on the characteristic information.
When this parameter is input to the parameter input means, the voice characteristic adjustment
means is configured to optimize the frequency characteristic of the voice output by the voice
output means based on the input parameter, for example, the sound pressure of the voice Adjust
so that the frequency characteristic is flat.
[0014]
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4
As described above, the characteristic output unit outputs the characteristic information related
to the frequency characteristic of the voice input to the voice input unit to the external device,
and the frequency of the sound output by the voice output unit determined by the external
device The sound characteristic adjusting means makes the sound pressure frequency
characteristic of the sound flat, for example, so that the frequency characteristic of the sound
outputted by the sound outputting means becomes optimum, simply by inputting the parameter
determining the characteristic into the parameter input means. So it can be easily adjusted.
[0015]
Further, according to the present invention, the characteristic output means is a recording means
to which the recording medium is detachably mounted and which records information on the
mounted recording medium.
Therefore, the characteristic information can be easily obtained by the characteristic output unit
simply by attaching the recording medium to which the characteristic information related to the
frequency characteristic of the sound output from the sound output unit and input to the sound
input unit is recorded. Can be recorded on a recording medium.
[0016]
Further, according to the present invention, the parameter input means is a reproduction means
to which the recording medium is detachably attached and which reproduces the information
recorded on the attached recording medium.
Therefore, the parameter input means can easily reproduce the parameters simply by mounting
the recording medium on which the parameter for determining the frequency characteristic of
the sound output by the sound output means, obtained by the external device, is recorded. be
able to.
Thus, every time the voice characteristic of the electronic device is adjusted, an operation of
obtaining a parameter for determining the frequency characteristic of the voice to be output by
the voice output means and an operation of adjusting the frequency characteristic of the voice
based on the parameter are repeated. There is no need to do it. Therefore, based on the
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parameters recorded in the recording medium, the frequency characteristics of the sound output
by the sound output means can be easily adjusted in a short time, and the convenience is
improved.
[0017]
Further, according to the present invention, a semiconductor memory such as a flash memory is
used as a recording medium. The flash memory can record and reproduce information in a short
time, and is relatively small and lightweight, so it can be easily carried and the convenience is
improved.
[0018]
Further, according to the present invention, since the characteristic output unit is a wireless
communication unit that performs wireless communication with an external device via wireless
radio waves and transmits information to the external device, the frequency characteristics of the
voice input to the voice input unit The characteristic information relating to the above can be
transmitted to the external device via a radio wave.
[0019]
Therefore, the user mounts a recording medium such as a semiconductor memory in the
electronic device, records the characteristic information in the recording medium, mounts the
recording medium in which the characteristic information is recorded in the external device, and
records in the recording medium Since it is not necessary to reproduce the characteristic
information to be reproduced by the external device, it is possible to save the user the trouble of
the above-mentioned work.
Further, by transmitting the characteristic information to the external device through a radio
wave, the time taken for supplying the characteristic information to the external device is longer
than when the characteristic information is supplied to the external device using the recording
medium. It can be shortened.
[0020]
Further, according to the present invention, the parameter input unit is a wireless communication
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unit that performs wireless communication with an external device via a wireless radio wave and
receives information transmitted from the external device. When the information, for example,
the parameter for determining the frequency characteristic of the voice to be output by the voice
output means is transmitted, the parameter transmitted from the external device can be received.
[0021]
Therefore, a user mounts a recording medium such as a semiconductor memory on an external
device, records the information on the recording medium, mounts the recording medium on
which the information is recorded on the electronic device, and records the information on the
recording medium Since the information does not have to be reproduced by the electronic device,
it is possible to save the user from the above-mentioned work.
Also, by receiving the information transmitted from the external device via a radio wave, the time
taken to acquire the information of the external device as compared to the case where the
information from the external device is acquired using the recording medium Can be shortened.
[0022]
FIG. 1 is a block diagram showing a simplified configuration of a voice characteristic adjustment
system 1 according to an embodiment of the present invention. The voice characteristic
adjustment system 1 is configured to include the in-vehicle device 2, the communication terminal
device 3 and the server device 5. In the voice characteristic adjustment system 1, the
communication terminal device 3 and the server device 5 are communicably connected via a
public network. In the present embodiment, the public network is the Internet 4. The in-vehicle
device 2 is an electronic device mounted on a vehicle such as an automobile, and is realized by
an audio device for reproducing, for example, a compact disk (abbreviated as CD) and a mini disk
(abbreviated as MD). Ru. Communication terminal device 3 is realized by, for example, a personal
computer.
[0023]
The in-vehicle device 2 includes a central processing unit (CPU) 11, a speaker 12, a microphone
13, an input unit 14, a display unit 15, a read only memory (ROM) 16, a random access memory
(RAM) 17, an audio characteristic adjustment unit 18, and a memory. A stick slot 19 and a
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memory stick control unit 20 are included.
[0024]
The CPU 11 uses the speaker 12, the microphone 13, the input unit 14, the display unit 15, the
ROM 16, the RAM 17, the voice characteristic adjustment unit 18, and the memory stick that
constitute the on-vehicle device 2 based on a program stored in advance in the ROM 16
described later. It controls hardware resources including the slot 19 and the memory stick
control unit 20.
[0025]
The speaker 12 is an audio output unit that outputs audio.
The microphone 13 is an audio input unit that converts the input audio into an audio signal.
The input unit 14 is a parameter input unit that inputs parameters for determining the frequency
characteristics of the sound output by the speaker.
[0026]
The input unit 14 is used as a power key of the in-vehicle apparatus 2, a numeric key, function
keys for which predetermined input information is set, an audio reproduction mode for
reproducing audio, and parameters for determining frequency characteristics of audio output by
the speaker 12. Based on this, it includes a switch key for switching to an audio characteristic
adjustment mode for adjusting the frequency characteristic of the audio output by the speaker
12. When the user presses a predetermined key of the input unit 14, an operation instruction
signal of the in-vehicle apparatus 2 based on the predetermined key is transmitted to the CPU
11.
[0027]
The display unit 15 displays the image information and the information related to the operation
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8
state of the in-vehicle apparatus 2 based on the display operation control signal output from the
CPU 11. More specifically, the display unit 15 displays, for example, information of an equalizer
representing a sound pressure level for each frequency band and parameters for determining the
frequency characteristic of the sound output by the speaker 12 and the like obtained by the
server device 5. The display unit 15 is realized by, for example, a liquid crystal display and an
electroluminescence display.
[0028]
The ROM 16 stores an operation program necessary for the in-vehicle apparatus 2 to operate.
The ROM 16 is realized by, for example, a flash memory which is a non-volatile memory. The
RAM 17 stores the product serial number of the in-vehicle apparatus 2, the product model name,
and parameters for determining the frequency characteristics of the sound output by the speaker
12.
[0029]
The audio characteristic adjusting unit 18 is an audio characteristic adjusting unit that adjusts
the frequency characteristic of the audio output by the speaker 12 based on the parameter for
determining the frequency characteristic of the audio output by the speaker 12.
[0030]
A memory stick, which is a type of flash memory, is removably attached to the memory stick slot
19.
The memory stick control unit 20 performs a process of recording information on a memory
stick attached to the memory stick slot 19 and a process of reproducing information recorded on
the memory stick.
[0031]
The memory stick slot 19 and the memory stick control unit 20 are output from the speaker 12
of the in-vehicle device 2 and output characteristic information related to the frequency
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9
characteristics of the sound acquired in the vehicle to an external device, for example, the
communication terminal device 3 It is a means. The CPU 11, the memory stick slot 19 and the
memory stick control unit 20 are recording means for recording information in the mounted
recording medium, and the CPU 11, the input unit 14, the memory stick slot 19 and the memory
stick control unit 20 are mounted Reproduction means for reproducing the information recorded
on the recording medium.
[0032]
The communication terminal device 3 includes a central processing unit (CPU) 31, a read only
memory (ROM) 32, a random access memory (RAM) 33, a memory stick slot 34, and a memory
stick control unit 35.
[0033]
The CPU 31 controls hardware resources including the ROM 32, the RAM 33, the memory stick
slot 34 and the memory stick control unit 35 which constitute the communication terminal
device 3 based on a program stored in the ROM 32 described later.
[0034]
The ROM 32 stores an operation program necessary for the communication terminal device 3 to
operate.
The ROM 32 is realized by, for example, a flash memory which is a non-volatile memory.
The RAM 33 stores information recorded on a memory stick attached to the memory stick slot
34 and information transmitted from the server device 5 via the Internet 4.
[0035]
A memory stick, which is a type of flash memory, is removably attached to the memory stick slot
34. The memory stick control unit 35 performs processing of recording information on a
memory stick mounted in the memory stick slot 34 and processing of reproducing information
recorded on the memory stick.
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10
[0036]
The server device 5 is a service dedicated server connected to the Internet 4. The server device 5
includes a parameter calculation unit 41. The parameter calculation unit 41 obtains a parameter
for determining the frequency characteristic of the sound output from the speaker 12 based on
the characteristic information related to the frequency characteristic of the sound output from
the speaker 12 of the in-vehicle device 2 and acquired in the vehicle. Includes calculation
programs. The server device 5 obtains the parameter according to the calculation program.
When the characteristic information is transmitted from the communication terminal device 3 via
the Internet 4, the server device 5 receives the characteristic information. The parameter
calculator 41 obtains the parameter based on the received characteristic information according
to the program. The server device 5 transmits the obtained parameter to the communication
terminal device 3 via the Internet 4.
[0037]
FIG. 2 is a flow chart for explaining the processing procedure for adjusting the frequency
characteristic of speech in the speech characteristic adjustment system 1. At the start of the
process of adjusting the frequency characteristic of voice, the on-vehicle apparatus 2 and the
communication terminal apparatus 3 can operate. The communication terminal device 3 and the
server device 5 are connected to the Internet 4 and can communicate with each other via the
Internet 4.
[0038]
In step S1, the CPU 11 determines whether the in-vehicle apparatus 2 is set to the voice
characteristic adjustment mode. When it is determined in step S1 that the in-vehicle apparatus 2
is not set to the voice characteristic adjustment mode, the process proceeds to step S2, and when
it is determined that the in-vehicle apparatus 2 is set to the audio characteristic adjustment
mode, the process proceeds to step S3. move on.
[0039]
In step S2, by operating the switching key of the input unit 14, the voice characteristic
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11
adjustment mode is set in which the frequency characteristic of the sound output from the
speaker 12 is adjusted.
[0040]
In step S3, the characteristic information related to the frequency characteristic of the sound in
the vehicle is acquired.
In order to obtain the characteristic information, first, assume a predetermined position in the
vehicle, for example, a riding position of a listener such as a driver's seat, a passenger's seat, a
left rear seat and a right rear seat. The microphone 13 is arranged. An audio signal such as pink
noise is output from the speaker 12 installed at a predetermined position, and the pink noise
output from the speaker 12 is input to the microphone 13. The pink noise input to the
microphone 13 is converted into an electric signal, and the CPU 11 analyzes the signal. As a
result of the signal analysis, frequency characteristic information of pink noise input to the
microphone 13, for example, information of sound pressure level for each frequency band can be
obtained. A plurality of frequency characteristic information at each seat position is acquired by
performing the above-described operation a plurality of times by changing the position of the
microphone 13, for example, the position of the above-described seat. Information including the
acquired respective frequency characteristic information, the seat position related to the
frequency characteristic information, the arrangement position of the speaker and the vehicle
type of the vehicle is stored in the RAM 17 as the characteristic information.
[0041]
In step S4, the memory stick is attached to the memory stick slot 19 of the on-vehicle apparatus
2. In step S5, the memory stick control unit 20 records the characteristic information stored in
the RAM 17 on the memory stick. In step S6, the memory stick is released from the memory stick
slot of the on-vehicle apparatus 2.
[0042]
In step S7, the memory stick is attached to the memory stick slot 34 of the communication
terminal 3. In step S8, the memory stick control unit 35 of the communication terminal device 3
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reproduces the characteristic information recorded on the memory stick and stores the
characteristic information in the RAM 33.
[0043]
In step S 9, the communication terminal device 3 transmits the characteristic information stored
in the RAM 33 from the communication terminal device 3 to the server device 5 via the Internet
4.
[0044]
In step S10, the server device 5 receives the characteristic information transmitted from the
communication terminal device 3.
Then, according to the calculation program stored in the parameter calculation unit 41, a
parameter for determining the frequency characteristic of the sound output from the speaker 12
of the on-vehicle apparatus 2 is obtained based on the received characteristic information.
[0045]
Here, the parameters will be described in detail, which are parameters representing information
of a parametric equalizer, distance information from a listening position to a speaker, and
information of a frequency band of sound output from each speaker 12 of a plurality of speakers
12. In the present embodiment, these parameters are adjusted to make the sound pressure
frequency characteristic flat so that the frequency characteristic of the sound output from 12 is
optimal. More specifically, the parameter is an adjustment amount of the sound pressure level in
each frequency band. Note that the parametric equalizer is a graphic equalizer that can divide the
audio frequency band and adjust the sound pressure level of each band, and can set the peak and
valley sharpness and center frequency in the curve for one frequency band to arbitrary values. It
is.
[0046]
In step S 11, the server device 5 transmits the parameter obtained according to the calculation
program of the parameter calculation unit 41 from the server device 5 to the communication
terminal device 3 via the Internet 4.
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[0047]
In step S12, the communication terminal device 3 receives the parameter transmitted from the
server device 5, and stores the received parameter in the RAM 33.
Then, the memory stick control unit 35 records the parameters stored in the RAM 33 on the
memory stick. In step S13, the memory stick is released from the memory stick slot 34 of the
communication terminal 3.
[0048]
In step S14, the memory stick is attached to the memory stick slot 19 of the on-vehicle apparatus
2. In step S15, the CPU 11 determines whether the in-vehicle apparatus 2 is set to the sound
characteristic adjustment mode. When it is determined in step S15 that the in-vehicle apparatus
2 is not set to the voice characteristic adjustment mode, the process proceeds to step S16. When
it is determined that the in-vehicle apparatus 2 is set to the audio characteristic adjustment
mode, the process proceeds to step S17. move on.
[0049]
In step S16, the voice characteristic adjustment mode for adjusting the frequency characteristic
of the sound output from the speaker 12 is set.
[0050]
In step S17, the memory stick control unit 20 of the in-vehicle apparatus 2 reproduces the
parameters recorded in the memory stick.
In step S18, the parameters reproduced by the memory stick control unit 20 are stored in the
RAM 17, and the parameters for adjusting the audio characteristics stored in the RAM 17 are
erased in advance to rewrite the parameters. Note that the parameter rewriting is a process for
preventing excess of the storage capacity of the RAM 17 in the in-vehicle apparatus 2. Therefore,
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when there is no problem in the storage capacity, it is not necessary to rewrite the parameters.
[0051]
In step S19, the user refers to the parameter displayed on the display unit 15 and inputs the
parameter to the input unit 14, and the voice characteristic adjustment unit 18 optimizes the
frequency characteristic of the sound output from the speaker 12 In the present embodiment,
adjustment is made so that the sound pressure frequency characteristics of the sound become
flat, and the processing is ended. By displaying the boarding position and the corresponding
parameter on the display unit 15, the user can select the parameter corresponding to the
boarding position, and the frequency characteristic of the sound output from the speaker 12 is
more In order to be optimal, in the present embodiment, the sound pressure frequency
characteristics of the sound can be adjusted to be flatter. This improves the convenience.
[0052]
As described above, in the voice characteristic adjustment system 1, the user of the on-vehicle
device 2 only inputs the characteristic information related to the frequency characteristic of the
voice output from the speaker 12 and acquired in the vehicle to the communication terminal
device 3. Good. Therefore, it is not necessary for the user of the in-vehicle device 2 to check and
grasp in advance information such as, for example, the vehicle type of the vehicle on which the
in-vehicle device 2 is mounted and the product name of the in-vehicle device. Can be reduced. In
addition, since the user does not have to manually input the information as in the prior art, it is
possible to eliminate the complexity of the manual input.
[0053]
Further, the parameter calculation unit 41 of the server device 5 in the voice characteristic
adjustment system 1 outputs the listener's riding position or the like based on the characteristic
information related to the frequency characteristic of the sound output from the speaker 12 and
acquired in the vehicle. The output characteristics of the in-vehicle device 2 according to the
conditions in the vehicle, in other words, the parameters for determining the frequency
characteristics of the sound output by the speaker 12 can be easily and reliably obtained.
Further, the voice characteristic adjustment unit 18 can be configured based on the parameters
only by inputting into the input unit 14 a parameter for determining the frequency characteristic
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of the sound outputted by the speaker 12 obtained by the parameter calculation unit 41 of the
server device 5 In this embodiment, the sound pressure frequency characteristic of the sound can
be easily adjusted so that the sound pressure frequency characteristic of the sound becomes flat
so that the frequency characteristic of the sound outputted by the speaker 12 becomes optimum.
[0054]
In the voice characteristic adjustment system 1, the parameter obtained by the parameter
calculation unit 41 of the server device 5 is transmitted from the server device 5 to the
communication terminal device 3 via the Internet 4, and the communication terminal device 3
receives the transmitted parameter. After that, the memory stick control unit 20 can easily record
the parameters on the memory stick by mounting the memory stick, which is a recording
medium, in the memory stick slot 19 of the communication terminal device 3. In addition, the
memory stick is output from the speaker 12 of the in-vehicle device 2 and attached to the
memory stick slot 34 of the communication terminal device 3 in which the characteristic
information related to the frequency characteristic of the voice acquired in the vehicle is
recorded. The control unit 35 can easily reproduce the characteristic information.
[0055]
Further, the memory stick control unit 20 simply mounts the memory stick in which the
parameter for determining the frequency characteristic of the sound to be output by the speaker
12, which is determined by the server device 5, is recorded into the memory stick slot 19 of the
on-vehicle device 2. , The parameters can be easily reproduced. As a result, whenever it is
necessary to adjust the frequency characteristic of the sound output by the speaker 12 of the invehicle device 2, it is not necessary to repeat the operation of obtaining the parameter and the
operation of adjusting the frequency characteristic of the sound based on the parameter. .
Therefore, in the present embodiment, the sound pressure frequency of the sound is reproduced
so that the frequency characteristic of the sound output by the speaker 12 of the on-vehicle
apparatus 2 becomes optimal based on the parameter recorded on the memory stick. Adjustment
can be made easily and in a short time so that the characteristics become flat, and convenience is
improved.
[0056]
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In the voice characteristic adjustment system 1, a memory stick, which is a type of flash memory,
is used as a recording medium. The memory stick is capable of recording and reproducing
information in a short time, and is relatively compact and easy to carry, thus improving
convenience.
[0057]
In addition, by storing the parameter and the characteristic information obtained by the
parameter operation unit 41 of the server device 5 in the server device 5, a database of
information on adjustment of voice characteristics based on the parameter and the characteristic
information may be constructed. it can. By this, the user can easily obtain desired information
from the database built in the server device 5, and the convenience is improved.
[0058]
FIG. 3 is a block diagram showing a simplified configuration of a voice characteristic adjustment
system 50 according to another embodiment of the present invention. The speech characteristic
adjustment system 50 is similar to the speech characteristic adjustment system 1 described
above, and the corresponding parts are denoted by the same reference numerals, and the
description thereof is omitted.
[0059]
The on-vehicle apparatus 2 of the voice characteristic adjustment system 50 includes a wireless
communication unit 21 instead of the memory stick slot 19 and the memory stick control unit 20
in the on-vehicle apparatus 2 of the audio characteristic adjustment system 1. The
communication terminal device 3 of the voice characteristic adjustment system 50 includes a
wireless communication unit 36 instead of the memory stick slot 34 and the memory stick
control unit 35 in the communication terminal device 3 of the audio characteristic adjustment
system 1.
[0060]
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The wireless communication unit 21 of the in-vehicle device 2 is a wireless communication unit
that performs wireless communication with the communication terminal device 3 via a wireless
radio wave and transmits and receives information. The wireless communication unit 36 of the
communication terminal device 3 is a wireless communication unit that performs wireless
communication with the in-vehicle device 2 via a wireless radio wave and transmits and receives
information. The wireless communication unit 21 of the in-vehicle apparatus 2 and the wireless
communication unit 36 of the communication terminal apparatus 3 are realized by, for example,
a wireless communication apparatus based on the Bluetooth (Bluetooth) standard.
[0061]
The communication terminal device 3 including the wireless communication unit 36 is disposed
in the vicinity or in the vehicle outside the vehicle in which the on-vehicle device 2 including the
wireless communication unit 21 is mounted, and the wireless communication unit 21 of the onvehicle device 2 and the communication terminal device 3 Wireless communication with the
wireless communication unit 36 of FIG. By this, transmission and reception of characteristic
information related to the frequency characteristic of the voice acquired in the vehicle, and
transmission and reception of parameters which are determined by the server device 5 and
which determine the frequency characteristic of the voice output by the speaker 12 The same
effects as those of the above-described voice characteristic adjustment system 1 can be obtained.
[0062]
Further, by performing wireless communication via wireless radio waves between the in-vehicle
device 2 and the communication terminal device 3, an operation for attaching the memory stick
to the in-vehicle device 2 and the communication terminal device 3, and the memory stick invehicle device 2 And the effort of the operation | work made to leave from the communication
terminal device 3 can be saved. Thereby, the in-vehicle apparatus 2 supplies information to the
communication terminal apparatus 3 to perform communication as compared with the case
where the recording medium such as a memory stick is attached to the in-vehicle apparatus 2
and the communication terminal apparatus 3 to record and reproduce information. The time
taken for the terminal device 3 to acquire the information supplied from the in-vehicle device 2,
and the communication terminal device 3 supplies the information to the in-vehicle device 2, and
the in-vehicle device 2 supplies the information supplied from the communication terminal
device 3 The time taken to acquire can be shortened.
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[0063]
Therefore, as compared with the case where the recording medium such as the memory stick is
attached to the in-vehicle apparatus 2 and the communication terminal apparatus 3 to perform
the information recording and reproduction, the frequency characteristic of the sound output by
the speaker 12 is optimized. In the embodiment, it is possible to reduce the time taken to adjust
the sound pressure frequency characteristic of the sound to be flat.
[0064]
The above embodiment describes the configuration of the voice characteristic adjustment system
1, 50 when the Internet 4 is applied as a public network, but in another embodiment of the
present invention, for example, a Wide Area Network (abbreviated as Wide Area Network) The
present invention can also be suitably implemented for WAN and the like.
[0065]
In the above embodiment, the configuration of the voice characteristic adjustment system 1 in
the case where the memory stick is applied as a recording medium detachably mounted on the
in-vehicle apparatus 2 and the communication terminal apparatus 3 has been described. In the
embodiment, the present invention can be suitably implemented on recording media such as
Compact Flash (registered trademark) card and SD (Secure Digital) memory card.
[0066]
In the above embodiment, the configuration of the voice characteristic adjustment system 1, 50
in the case where the electronic device is mounted on a vehicle and used as the on-vehicle device
2 has been described, but in the other embodiments of the present invention For example, even
when the electronic device is installed in a room of a general house, for example, it can be
suitably implemented.
[0067]
BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which simplifies and shows the
structure of the audio | voice characteristic adjustment system 1 which is one embodiment of
this invention.
FIG. 6 is a flowchart for describing a processing procedure for adjusting frequency
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characteristics of speech in the speech characteristic adjustment system 1. FIG.
It is a block diagram which simplifies and shows the structure of the audio | voice characteristic
adjustment system 50 which is another form of implementation of this invention.
Explanation of sign
[0068]
1, 50 voice characteristic adjustment system 2 in-vehicle device 3 communication terminal
device 4 Internet 5 server device 11, 31 CPU (Central Processing Unit) 12 microphone 13
speaker 14 input unit 15 display unit 16, 32 ROM (Read Only Memory) 17, 33 RAM (Random
Access Memory) 18 voice characteristic adjustment unit 19, 34 memory stick slot 20, 35
memory stick control unit 21, 36 wireless communication unit 41 parameter operation unit
08-05-2019
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