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JP2010192995

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DESCRIPTION JP2010192995
The present invention makes it possible to easily set sound quality according to user's
preference. SOLUTION: A sound quality of a sound signal to be reproduced is changed, and a
plurality of sound signals having different sound quality are generated as selection candidates
(step S2) Equalizer processing means and selection candidates generated by the equalizer
processing means are switched. The setting value of the sound quality of the selection candidate
selected by the user from among the plurality of selection candidates reproduced by the
reproduction means and the reproduction means is sequentially reproduced (step S3) (steps S5
and S6). And (c) controlling means for setting the obtained setting value as the setting value of
the sound quality of the sound signal to be reproduced (step S10). [Selected figure] Figure 3
Sound equipment
[0001]
The present invention relates to audio equipment.
[0002]
An audio device equipped with an equalizer function can adjust the sound quality such as
frequency characteristics and delay time of a sound signal to be reproduced.
For example, for each genre such as "POPS", "ROCK" and "JAZZ", preset values in which setting
values are combined for each item of sound quality such as frequency characteristics are
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determined in advance, and the preset of the genre selected by the user A technique for changing
sound quality using a value is disclosed (for example, Patent Document 1). When more detailed
setting is desired, the user can manually set each item of the sound quality to an arbitrary setting
value.
[0003]
Japanese Patent Application Laid-Open No. 7-284185
[0004]
When adjusting the sound quality by the preset value, the setting value of the sound quality is
fixed at the manufacturer side, so the range in which the user can change the sound quality is
limited, and the user can not cope with a wide range of user preferences.
[0005]
On the other hand, according to the manual setting, since the user can freely set the setting
value, the sound quality can be made close to the user's preference.
The more sound quality items that can be set manually, the wider the user's preferences can be
accommodated.
However, sound quality adjustment also requires specialized knowledge, and if there are many
sound quality items, it is difficult and inconvenient for unskilled users to set. In addition, since
the sound quality of the sound being listened to changes every time the setting value is adjusted
for one item, it is not possible to know whether it is the originally intended sound quality by the
time adjustment of all items is completed. It may not be easy to adjust to the desired sound
quality.
[0006]
An object of the present invention is to make it possible to easily set the sound quality according
to the preference of the user.
[0007]
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According to the invention described in claim 1, equalizer processing means for changing a
sound quality of a sound signal to be reproduced and generating a plurality of sound signals
having different sound quality as selection candidates; selection candidates generated by the
equalizer processing means Setting means for selecting the selected sound quality selected by the
user from among the plurality of selection candidates reproduced by the reproducing means, and
reproducing the setting values obtained by the statistics. A control unit configured to set as a
setting value of the sound quality of a sound signal to be reproduced.
[0008]
According to the invention described in claim 2, a plurality of selection candidates having
different sound quality are generated by the equalizer processing means, the reproduction means
reproduces the selection candidates, and the setting value of the sound quality of the selected
selection candidate is selected. The control means repeats the process of cumulatively adding
and storing in the storage means a plurality of times, and the control means performs the
processing of repeating the plurality of times the cumulative value of the sound quality of each
selection candidate stored in the storage means. The audio device according to claim 1, wherein
the audio device is set as a setting value of the sound quality of the sound signal to be
reproduced.
[0009]
According to the present invention, it is possible to easily set the sound quality according to the
preference of the user.
[0010]
It is a figure which shows the functional structure of the audio equipment in this Embodiment.
It is an example of a database used for sound quality adjustment.
It is a flowchart which shows the process performed by an audio equipment at the time of
adjustment of sound quality.
It is a figure which shows the setting value example of the sound quality of two selection
candidates.
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It is a figure which shows the example of a database to which the setting value of the sound
quality of the selected selection candidate was cumulatively added. It is a figure explaining the
selection of a selection candidate, and the setting value obtained by the said selection.
[0011]
Hereinafter, embodiments of the present invention will be described with reference to the
drawings.
[0012]
FIG. 1 is a diagram showing a main functional configuration of the audio device 1 according to
the present embodiment.
The audio device 1 has an equalizer function capable of changing the sound quality when
reproducing a sound signal. Examples of the audio device 1 include an audio system for
reproducing sound stored in a medium such as a CD (Compact Disk), a car stereo system
mounted on a vehicle, a portable music reproduction player, and the like. It is not limited to these
as long as it is an acoustic device having a function.
[0013]
As shown in FIG. 1, the audio device 1 includes a microcomputer 10, an operation unit 20, a
display unit 30, a CD mechanism unit 40, a tuner unit 50, an external I / F 60, an equalizer
processing unit 70, and a reproduction unit 80. ing.
[0014]
The microcomputer 10 is configured to include a control unit 11 and a storage unit 12.
The control unit 11 includes a central processing unit (CPU), a random access memory (RAM),
and the like, performs various processing in cooperation with a program stored in the storage
unit 12 and performs various operations. Control the
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[0015]
For example, at the time of adjusting the sound quality, the control unit 11 statistics the setting
value of the sound quality of the selection candidate selected by the user among the selection
candidates which are plural sound signals having different sound quality generated from one
sound source. The control unit 11 sets the setting value obtained by the statistics as the setting
value of the sound quality of the sound signal to be reproduced.
[0016]
The storage unit 12 stores, in addition to various programs, files necessary for execution of the
programs, databases, and the like. As the storage unit 12, a hard disk, a flash memory, or the like
can be used. A digital sound source to be reproduced may be stored in the storage unit 12.
[0017]
The storage unit 12 stores a database used when adjusting the sound quality. The database T
shown in FIG. 2 is an example. As shown in FIG. 2, a cumulative value is stored in the database T
for each item of adjustable sound quality. Item numbers 1 to n are assigned to each item of
sound quality. Items of sound quality include items related to frequency characteristics such as
frequency band 1 of low frequency band and frequency band 2 of middle and low frequency
band, as well as items such as feeder, balance and delay time. The cumulative value is a value
obtained by cumulatively adding the setting value of the sound quality selected by the user at the
time of adjusting the sound quality.
[0018]
The operation unit 20 includes a remote controller in addition to various operation keys such as
a reproduction key, a stop key, and a selection key, generates an operation signal corresponding
to the operation, and outputs the operation signal to the control unit 11.
[0019]
The display unit 30 displays an operation screen or the like on the display according to the
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display control of the control unit 11.
[0020]
The CD mechanism unit 40 reads the digital sound source stored in the CD as a sound signal, and
outputs the read analog sound signal to the equalizer processing unit 70.
The tuner unit 50 receives a broadcast signal, converts it into an analog sound signal, and
outputs the converted sound signal to the equalizer processing unit 70.
The external I / F 60 inputs an analog sound signal from an external device via a USB cable or
the like, and outputs the input sound signal to the equalizer processing unit 70.
[0021]
The equalizer processing unit 70 adjusts the volume and the sound quality of the input analog
sound signal according to the control of the control unit 11. For example, the equalizer
processing unit 70 processes the sound signal input as the reproduction target, and changes the
sound quality of the setting value set by the control unit 11. The sound signal whose sound
quality has been changed is output to the reproduction unit 80. The reproduction unit 80
amplifies the sound signal input from the equalizer processing unit 70 and outputs the amplified
sound signal to the speaker group 81. The speaker group 81 outputs an analog sound signal as a
sound wave.
[0022]
FIG. 3 is a flowchart showing a flow of processing executed by the audio device 1 when adjusting
the sound quality. The process is started when the sound quality adjustment mode is selected by
the user from the menu. As shown in FIG. 3, the control unit 11 first initializes the database T,
and resets the cumulative value stored in the database T to zero. Further, the control unit 11
initializes the item number n of the item to be adjusted in sound quality, and sets n = 1 (step S1).
Next, the equalizer processing unit 70 changes the sound quality of the item of the item number
n of the sound signal to be reproduced, and generates two sound signals having different sound
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quality (step S2). These two sound signals are set as selection candidates A and B. The sound
signal to be reproduced may be a sound signal acquired from the CD mechanical unit 40, the
tuner unit 50, or the external I / F, or may be a sound signal stored in the storage unit 12.
[0023]
The control unit 11 sets the setting values of the sound quality of the two selection candidates A
and B. For example, item number n = 1 is the item of frequency band 1 in the low frequency
range as shown in FIG. As shown in FIG. 4, the control unit 11 sets the set value of the frequency
band 1 of the selection candidate A to 5 and sets a difference of the set value 5 and the
predetermined value 5 and sets the set value of the frequency band 1 of the selection candidate B
to 10. The set values of items other than frequency band 1 are set to 0. The equalizer processing
unit 70 does not change the sound quality for the item whose setting value is 0 in the selection
candidates A and B. The sound quality is changed for items whose setting value exceeds 0. For
example, the selection candidate A whose setting value of the frequency band 1 is 5 is a sound
signal in which the low frequency range is enhanced by +5 levels from the sound signal of the
original sound source. No change has been made to the sound quality of the other items whose
setting value is 0.
[0024]
The generated selection candidates A and B are output to the reproduction unit 80, respectively.
The reproduction unit 80 alternately switches the selection candidates A and B every 5 seconds,
for example, every 5 seconds, and reproduces them according to the reproduction control of the
control unit 11 (step S3). The user may listen to the sound to be reproduced, and may use the
operation unit 20 to select one of the selection candidates A and B as the selection candidate of
the desired sound quality. For example, the selection key may be operated when a selection
candidate of the desired sound quality is reproduced.
[0025]
When the selection candidate A is selected (step S4; Y), the control unit 11 cumulatively adds the
setting value of the sound quality of the selection candidate A to the total value of the database T
and performs statistics (step S5). The selection candidate A is a sound signal in which only the
sound quality of the item of the item number n is changed as described above, and the setting
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values of the items other than the item number n are all 0. As a result, the setting value of the
sound quality of the item of the item number n of the selected selection candidate A is
cumulatively added to the cumulative value of the item of the item number n of the database T,
and the change of the cumulative value for items other than the item number n There will be no
Immediately after the initialization of the database T, the cumulative value of each item of the
database T is all zero. Therefore, when the selection candidate A listed in FIG. 4 is selected
immediately after the database T is initialized, the setting value 5 of the frequency band 1 of the
selection candidate A is cumulatively added to the cumulative value 0 of the frequency band 1 of
the database T As shown in FIG. 5, the cumulative value of frequency band 1 of the database T is
updated to 0 + 5 = 5.
[0026]
When the selection candidate B is selected instead of the selection candidate A (step S4; N),
similarly, the control unit 11 cumulatively adds the setting value of the sound quality of the
selection candidate B to the total value of the database T and performs statistics ((6) Step S6). In
the case of selection candidate B shown in FIG. 4, the setting value of frequency band 1 of
selection candidate B is 10, and the setting values of other items are 0, so database T updates
only the cumulative value of frequency band 1 to 0 + 10 = 10 Be done.
[0027]
Next, the control unit 11 stops the reproduction by the reproduction unit 80 (step S7), and
determines whether the processes of steps S2 to S6 have been completed for all the item
numbers 1 to n (step S8). If all the items have not been completed (step S8; N), the control unit
11 increments the item number n by +1 (step S9). Thereafter, the process returns to step S2, and
the processes of steps S2 to S7 are repeated for the sound quality of the item of the item number
n incremented by +1. By repeating the processes of steps S2 to S7, as shown in FIG. 6, the
equalizer processing unit 70 generates two selection candidates An and Bn whose sound quality
has been changed for each item of item numbers 1 to n, and a reproduction unit 80 is
reproduced, and the control unit 11 accumulates the setting values of the sound quality of the
selection candidate selected by the user to the database T to repeat the process of statistics.
[0028]
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When the processes of steps S2 to S6 are completed for all the item numbers 1 to n (step S8; Y),
the control unit 11 reads the total value corresponding to each item of the sound quality from
the database T, and the sound value Are set as set values of (step S10). The cumulative value is a
setting value obtained by statistically setting the sound quality setting value of the selected
selection candidate. That is, as shown in FIG. 6, by repeatedly selecting the selection candidates
An and Bn, the setting value of the sound quality preferred by the user is statistics, and is
determined as the final setting value of the sound quality.
[0029]
The equalizer processing unit 70 changes the sound quality of the sound signal to be reproduced
using the setting value set by the control unit 11. The sound signal whose sound quality has been
changed is output to the reproduction unit 80, and the reproduction unit 80 reproduces the
sound signal (step S11).
[0030]
As described above, according to the present embodiment, the equalizer processing unit 70
changes the sound quality of the sound signal to be reproduced, and generates two sound signals
having different sound quality as selection candidates. The playback unit 80 switches the
generated selection candidates and sequentially reproduces them, and the control unit 11
cumulatively adds, to the database T, the setting values of the sound quality of the selection
candidate selected by the user among the two reproduced selection candidates. Do. This process
is repeated a plurality of times for each sound quality item, and as a result, the control unit 11
sets the setting value of the sound quality of each selection candidate stored in the database T as
the setting value of the sound quality of the sound signal to be reproduced.
[0031]
By thus statistics of the user's selection, it is possible to analyze the user's favorite sound quality
and to obtain the setting value of the sound quality matching the user's preference. Even if there
is no expert knowledge about sound quality adjustment, the user can set to the desired sound
quality simply by performing a simple operation of listening to and selecting a selection
candidate, and can enjoy reproduction of the sound quality-adjusted sound. Since the operation
at the time of sound quality adjustment is simple, the sound quality can be adjusted even during
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other work, which is particularly effective when the audio device 1 integrated with the car
navigation device is mounted on a vehicle, etc. is there.
[0032]
Since the selection candidate is a choice, it becomes easy to hear the difference in the sound
quality, and the selection operation also becomes easy.
[0033]
In addition, the said embodiment is a suitable example of this invention, and is not limited to this.
For example, although the selection of the sound quality is performed once for each item and the
statistics are performed in the above embodiment, the selection may be performed a plurality of
times for each item to perform the statistics. The setting values of the sound quality of the
selected selection candidate are accumulated and added to the database T, and the total value is
set as the setting value of the sound quality of the sound to be reproduced.
[0034]
For example, for the item of frequency band 1 of item No. 1, the first of selection candidate A (1)
(setting value of frequency band 1 is 5) and selection candidate B (1) (setting value of frequency
band 1 is 10) After the selection, the second selection of selection candidate A (2) (setting value
of frequency band 1 is 10) and selection candidate B (2) (setting value of frequency band 1 is 15)
is repeated. When the selection candidate B (1) is selected by the first selection, and the selection
candidate A (2) is selected by the second selection, the total value of the frequency band 1 items
in the database T is set to the selection candidate B (1) The value “10” is “20” obtained by
cumulatively adding the setting value “10” of the selection candidate A (2). Therefore, among
the sound quality of the sound to be reproduced, the sound quality of the frequency band 1 is set
to the setting value “20”.
[0035]
In this manner, it is possible to analyze the tendency of the user's favorite sound quality in detail
by repeating the selection a plurality of times for one item and statistics the setting value of the
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item. It can be approached.
[0036]
Further, in the above embodiment, the selection candidate is selected as a choice for the user to
easily select. However, the present invention is not limited to this, and two or more selection
candidates are provided, and one or more of them may be selected. It may be configured to be
able to select a candidate.
For example, the configuration may be such that one of three selection candidates whose setting
values are changed in three steps may be selected, or two out of five selection candidates
changed in five stages may be selected. Good. The control unit 11 cumulatively adds the setting
value of the selected tone quality of the selected candidate to the database T.
[0037]
In addition, even if the setting value of the sound quality finally set and the digital sound source
of the sound signal to be reproduced are stored in a server on the network, the setting value of
the sound quality and the digital sound source can be acquired from the server. Good. Thereby,
preference of each user can be grasped.
[0038]
In addition, although the selection candidates A and B are alternately switched and reproduced at
predetermined time intervals, the reproduction time may be a time previously set in the audio
device 1 or a time set by the user. It is also good. Furthermore, the selection candidates A and B
may be reproduced from the beginning through one song, or several phrases of the selection
candidates A and B may be repeatedly reproduced.
[0039]
Reference Signs List 1 audio equipment 10 microcomputer 11 control unit 12 storage unit 20
operation unit 30 display unit 70 equalizer processing unit 80 reproduction unit
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