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JP2010147763

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DESCRIPTION JP2010147763
The present invention is to provide an "audio apparatus" which can more easily adjust EQ
parameters. An audio apparatus includes an equalizer 12 for controlling the sound quality of an
output sound based on EQ parameters set by performing adjustment operations for each of a
plurality of frequency bands while reproducing an adjustment music, Storage means 25 for
storing music specification information for specifying the music for adjustment in
correspondence with the EQ parameters of the respective frequency bands, and when performing
adjustment of the EQ parameters for each frequency band, the EQ parameters of the frequency
bands concerned. The present invention is configured to have adjustment time processing means
21, 22, and 23 for acquiring the corresponding music specification information from the storage
unit 25 and performing processing for reproducing the music specified by the music
specification information. [Selected figure] Figure 1
Audio device
[0001]
The present invention relates to an audio apparatus provided with an equalizer that adjusts the
sound quality of an output sound.
[0002]
Conventionally, there is an audio apparatus provided with an equalizer for adjusting the sound
quality of an output sound (see, for example, Patent Document 1).
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This type of audio apparatus is capable of adjusting one or more of the center frequency Fc of
each of the plurality of frequency bands of the output sound, the gain G of the sound, and its
sharpness (Q value) (these The center frequency Fc, the gain G and the sharpness (Q value) are
collectively referred to as EQ parameters hereinafter. In this EQ parameter adjustment, the user
can easily listen to the output sound of each frequency band while listening to music reproduced
from a sound source such as a CD, and find a music range suitable for adjustment of the EQ
parameter. The EQ parameters are adjusted, and operations such as determining the adjustment
level are performed from the difference in sound quality before and after the adjustment.
[0003]
According to such an audio apparatus, it is possible to adjust the EQ parameters of each of the
plurality of frequency bands of the output sound, and therefore, it is possible to reproduce the
music from the sound source such as a CD with the sound quality according to the user's
preference. It will be. Japanese Utility Model Application Publication No. 5-91025
[0004]
However, in the adjustment of the EQ parameters described above, it is necessary to be careful
not to miss the music portion suitable for the EQ parameter adjustment of each frequency band
when the music is reproduced from the sound source. It is difficult to concentrate on the
adjustment operation that must be made while making a judgment, and as a result, the
adjustment operation has become difficult. This is particularly noticeable for users with little
coordination experience.
[0005]
The present invention has been made in view of such circumstances, and provides an audio
apparatus which can more easily adjust EQ parameters.
[0006]
An audio apparatus according to the present invention is an audio apparatus provided with an
equalizer that controls the sound quality of an output sound based on EQ parameters set by
performing adjustment operations for each of a plurality of frequency bands while reproducing
an adjustment music. Storage means for storing music specification information specifying music
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for adjustment in correspondence with the EQ parameters of each of the plurality of frequency
bands, and EQ of the frequency band when adjusting the EQ parameters for each frequency band
It has the adjustment time processing means for acquiring the music specification information
corresponding to the parameter from the storage means and performing processing for
reproducing the music specified by the music specification information.
[0007]
With such a configuration, when adjusting the EQ parameters for each frequency band, the music
specified by the music specifying information stored in advance in the storage unit is adjusted
even if the user does not decide the adjustment music. It will be able to be played as a song for
music.
[0008]
The adjustment song may be a song for one song or a part of a song for one song.
[0009]
Further, the audio apparatus according to the present invention corresponds to the EQ parameter
of the frequency band, the music specification information for specifying the adjusted music
when the adjustment operation of the EQ parameter is performed for a certain frequency band
while reproducing the music for adjustment. It can be set as the structure which has a
registration process means made to be made to memorize | store in the said memory means.
[0010]
With such a configuration, the user can register music specification information for specifying a
music suitable as a music for adjustment used to adjust the EQ parameter for each of the
frequency bands.
[0011]
Furthermore, in the audio device according to the present invention, the music for adjustment is
read from a storage medium set in the audio device and reproduced, and the music specification
information is stored in the storage medium. It can be configured to include the storage position
of the adjustment music.
[0012]
With such a configuration, when the music stored in the storage medium such as a CD is used as
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the adjustment music, a part of the music for one music can be specified as the adjustment music
at the storage position.
[0013]
According to the audio apparatus of the present invention, when adjusting the EQ parameter for
each frequency band, the audio apparatus is specified by the music specifying information stored
in the storage means in advance even if the user does not decide the music for adjustment. Since
it becomes possible to play back a tune as a tune for adjustment, it becomes easier to adjust the
EQ parameters.
[0014]
Hereinafter, embodiments of the present invention will be described with reference to the
drawings.
[0015]
An audio apparatus according to an embodiment of the present invention is configured as shown
in FIG.
[0016]
In FIG. 1, the audio apparatus includes a reproduction unit 11, an EQ unit (equalizer) 12, an
amplifier 13, and a speaker 14.
The reproduction unit 11 reads music data from a performance source (sound source) 100 such
as a CD and outputs an audio signal representing the music.
The EQ unit (equalizer) 12 is a frequency band for the audio signal based on the values of the EQ
parameters (center frequency Fc, gain G, Q value) set for each of the plurality of frequency bands
by the EQ setting unit 21 as described later. Perform filter processing for each.
The audio signal output from the EQ unit 12 is supplied to the speaker 14 through the amplifier
13, and the music sound corresponding to the audio signal is output from the speaker 14.
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[0017]
The sound quality of the output sound (musical music sound) from the speaker 14 is determined
according to the value of the EQ parameter set in the EQ unit 12.
For example, if a large gain G is set in a relatively high frequency band, its output sound is
enhanced in treble, and conversely if a large gain G is set in a relatively low frequency band, The
output sound is emphasized in the bass.
[0018]
The audio apparatus further includes an EQ setting unit 21, an EQ information acquisition unit
22, a reproduction music / position setting unit 23, a reproduction music / position acquisition
unit 24, and an adjustment music database 25 (storage means such as a hard disk). There is.
The EQ setting unit 21 sets values of the EQ parameters (the value of the center frequency Fc, the
value of the gain G, the value of the Q value) for each of the plurality of frequency bands based
on the operation of the operation unit by the user.
The EQ information acquisition unit 21 acquires the EQ parameter set by the EQ setting unit 21
and supplies the EQ parameter to the reproduction song / position setting unit 23 (operation at
the time of adjustment) or the adjustment music database 25 Supply to (operation at
registration).
[0019]
The reproduction music / position setting unit 23 reads from the adjustment database 25 the
music specification information (represented by the storage position of the source 100 such as a
CD) corresponding to the EQ parameter supplied from the EQ information setting unit 22 and
reproduces it. Provide to section 11.
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The reproduction unit 11 reads the music specified by the music specification information from
the performance source 100 such as a CD, and supplies an audio signal of the music to the EQ
unit 12.
The audio signal is supplied to the speaker 14 through the processing in the EQ unit 12 and the
processing in the amplifier 14, and a music sound (music sound for preparation) based on the
audio signal is output from the speaker 14.
[0020]
The reproduction music / position acquisition unit 24 acquires the storage position (for example,
track number Tr and reproduction time range) of the adjustment music read by the reproduction
unit 11 from the performance source 100 such as a CD, and specifies the storage position as the
music The information is stored in the adjustment music database 25 as information.
[0021]
Next, specific processing in this audio device will be described.
[0022]
When registering the music to be reproduced when setting the EQ parameter for each of the
plurality of frequency bands in the EQ unit 12, each part of the audio apparatus is controlled
based on the control by the control unit (not shown) according to the procedure shown in FIG.
Executes the process (registration process).
[0023]
The user performs a playback operation of a CD (hereinafter referred to as a reference CD) in
which music suitable for adjusting the EQ parameters is stored.
Thereby, in the audio apparatus, the music read from the reference CD is reproduced as the
adjustment music.
In such a situation, when the start of reproduction of the reference CD is confirmed (S1), it is
determined whether an instruction operation to start adjustment of EQ parameters has been
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made (S2).
The user listens to the music reproduced from the reference CD, and at least one of EQ
parameters (center frequency Fc, gain G and Q value) for a certain frequency band, for example,
the lowest frequency band (BAND1) When a music sound suitable for adjusting the) is output
from the speaker 14, an instruction operation to start adjustment of the EQ parameter is
performed.
When it is determined that the instruction to start adjustment of the EQ parameter has been
made accordingly (YES in S2), the time point when the reproduction music / position acquisition
unit 24 performs the instruction operation under the control of the control unit The reproduction
track number Tr at the time of acquisition is acquired, and the reproduction position at that time
is acquired as the start point ST (S3).
The start point ST can be represented, for example, by the time (seconds) from the start of the
performance of the music.
Thereafter, it is determined whether an instruction operation to end adjustment of the EQ
parameter has been made (S4).
[0024]
After instructing the user to start adjustment, the user adjusts the EQ parameters (at least one of
center frequency Fc, gain G and Q value) in the EQ unit (equalizer) 12 while listening to the music
sound to be reproduced. Do. Then, when the sound quality of the output music sound is in
accordance with preference, the user performs an instruction operation of the adjustment end of
the EQ parameter. Accordingly, when it is determined that the instruction to end adjustment of
the EQ parameter has been made (YES in S4), the EQ information acquisition unit 22 controls the
EQ parameter (center frequency adjusted by the user under control of the control unit). While
acquiring Fc (at least one of gain G and Q value) (S5), the reproduction music / position
acquisition unit 24 acquires the reproduction position at the time when the instruction operation
is performed as the end point ED (S6) . The end point ED can also be represented, for example, by
the time (seconds) from the start of the performance of the music.
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[0025]
Thereafter, under the control of the control unit, the EQ parameters acquired by the EQ
information acquisition unit 22, and the reproduction track number Trn of the music reproduced
as the adjustment music acquired by the reproduction music / position acquisition unit 24, It is
stored (registered) in the adjustment music database 25 in a state where the start point ST and
the end point ED are associated with each other (S7). Thereafter, whether or not the adjustment
of the EQ parameter is continued is determined based on, for example, the presence or absence
of the end operation by the user (S8). Here, if it is determined that the adjustment of the EQ
parameter continues (YES in S8), an instruction to start the adjustment of the next EQ parameter
for the next frequency band or for the same frequency band is given. It is determined whether an
operation has been performed (S2). When it is determined that the adjustment start instruction
operation has been made (YES in S2), the same processes (S3 to S7) as described above are
performed, and EQ parameters and their EQ parameters for the frequency band are obtained. The
reproduction track number Trn specifying the adjustment music used for adjustment, the start
point ST and the end point ED are registered in the adjustment music database 25 in association
with each other (S7).
[0026]
The above processes (S2 to S8) are repeatedly executed until the user performs an end operation,
and in the process, the reproduction track specifying the EQ parameter for each frequency band
and the adjustment music used for adjustment of the EQ parameter The number Trn, the start
point ST and the end point ED are sequentially registered in the adjustment music database 25.
When the user performs an end operation and it is determined that the adjustment of the EQ
parameter is not continued (NO in S8), the processing at the time of registration ends.
[0027]
As a result of the process described above, for example, information as shown in FIG. 3 is
registered in the adjustment music database 25. In FIG. 3, the center frequency band Fc which is
an EQ parameter for the lowest frequency band BAND1, the gain G, and the Q value (sharpness)
equal to or greater than the predetermined value q1 are the track number Tr1 of the reference
CD and the position range ST1. -Music identification information composed of ED1 is associated,
and the Q value smaller than the predetermined value q1 which is the EQ parameter for the same
frequency band BAND1 is composed of the track number Tri1 of the reference CD and the
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position range STi1-EDi1 Track specific information is associated. Also, for the center frequency
band Fc, which is an EQ parameter for the relatively low frequency band BAND2, the gain G, and
the Q value (sharpness) equal to or greater than the predetermined value q1, the track number
Tr2 of the reference CD and the position range ST2 -Music identification information composed
of ED2 is associated, and the Q value smaller than the predetermined value q1 which is the EQ
parameter for the same frequency band BAND2 is composed of the track number Tri2 of the
reference CD and the position range STi2-EDi2. Track specific information is associated.
Similarly, music identification information is associated with each EQ parameter for each
frequency band, and a center frequency band Fc which is an EQ parameter for the highest
frequency band BANn, a gain G, and a predetermined value q1 or more. The Q value (sharpness)
is associated with music specification information composed of the track number Trn of the
reference CD and the position range STn-EDn, and is smaller than a predetermined value q1
which is an EQ parameter for the same frequency band BANDn. Music identification information
composed of the track number Trin of the reference CD and the position range STin-EDin is
associated with the value.
[0028]
In the adjustment music database 25 composed of information as shown in FIG. 3, generally,
when the intermediate frequency Fc is relatively large (relatively high frequency band), the music
containing a large amount of high sound is In the case where the intermediate frequency Fc is
relatively small (a relatively low frequency band), a music piece containing a large amount of
bass is identified. Further, as for the gain G, a music including many components in the vicinity of
the intermediate frequency band Fc in each frequency band, that is, a music similar to the music
associated with the intermediate frequency Fc is specified. With regard to the Q value, when the
Q value is a predetermined value q1 or more and the characteristic curve centered on the
intermediate frequency Fc is relatively sharp, each frequency band is a music including many
components near the intermediate frequency Fc, ie, an intermediate If a song similar to the song
associated with the frequency Fc is specified, and its Q value is smaller than the predetermined
value q1 and the characteristic curve centered on the intermediate frequency Fc becomes gentle,
each frequency band is only near the intermediate frequency Fc Instead, the music including the
upper and lower frequency components is identified.
[0029]
After the adjustment music database 25 (see FIG. 3) as described above is obtained, the user can
easily perform the adjustment using the adjustment music database 25 for adjustment of the EQ
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parameter. The process at that time (adjustment process) will be described.
[0030]
With the reference CD set in the audio device, processing according to the procedure shown in
FIG. 4 is performed. In FIG. 4, when the user performs input operation of the frequency band
(BAND) to be adjusted the EQ parameter and the EQ parameter to be adjusted (one of center
frequency Fc and gain G and Q value), control by the control unit Under this condition, the EQ
information acquisition unit 22 acquires the frequency band (BAND) and the EQ parameter set by
the EQ setting unit 21 based on the input operation (S11). Then, under the control of the control
unit, the reproduction music / position setting unit 23 adjusts the music specification
information (track number Tr, reproduction range ST-ED) corresponding to the acquired
frequency band (BAND) and the EQ parameter. The music information is acquired from the music
database 25 (see FIG. 3) (S12), and the music specification information (track number Tr,
reproduction range ST-ED) is supplied to the reproduction unit 11 together with the reproduction
start instruction (S13). Thereafter, it is determined whether the adjustment of the EQ parameter
is completed (S14).
[0031]
The reproduction unit 11 reads the music portion specified by the music specification
information (track number Tr, reproduction range ST-ED) from the reference CD as an
adjustment music. Then, the corresponding audio signal is supplied from the reproduction unit
11 to the speaker 14 through the EQ unit 12 and the amplifier 13, and the music sound of the
music portion (music for adjustment) is output. While listening to the music sound, the user
adjusts the EQ parameters for the frequency band in the EQ unit (equalizer) 12 so that the
outputted music sound has the desired sound quality. When the music sound to be output has
the desired sound quality by the adjustment of the EQ parameter for the frequency band in the
EQ unit 12, the user performs an instruction operation of the end of the adjustment. Accordingly,
when it is determined that the adjustment of the EQ parameter is completed (YES in S14), the
control unit instructs the reproduction unit 11 to end reproduction (S15), and the reproduction
unit 11 receives the adjustment music from the reference CD. Stop playing the music part as.
[0032]
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Thereafter, whether or not the adjustment of the EQ parameter is continued is determined based
on, for example, the presence or absence of the end operation by the user (S16). Here, if it is
determined that the adjustment of the EQ parameter continues (YES in S16), the EQ parameter
for the next frequency band based on the user's input operation, as described above,
Alternatively, EQ parameters for the same frequency band are obtained (S11). Then, music
specification information (track number Tr, reproduction range ST-ED) corresponding to the
frequency band and the EQ parameter is acquired from the adjustment music database 25 (see
FIG. 3) (S12), and is specified by the music specification information The new music to be played
is read from the reference CD and reproduced (S13). In this state, the user can adjust the EQ
parameters for the specified frequency band while listening to the new music to be reproduced.
[0033]
The processes (S11 to S16) as described above are repeatedly executed until it is determined that
the adjustment of the EQ parameter is not continued after the user performs an end operation. As
a result, the situation where the adjustment of the EQ parameter in each of the plurality of
frequency bands reproduces the music specified by the music specification information
registered in advance in the adjustment music database 25 corresponding to the EQ parameter
for the frequency band Will be conducted under the Then, when the user performs an end
operation and it is determined that the adjustment of the EQ parameter is not continued (NO in
S16), the adjustment processing ends.
[0034]
In the audio apparatus as described above, when adjusting the EQ parameters for each frequency
band, the user searches the music reproduced from the reference CD for a music portion suitable
for adjusting the EQ parameters for each frequency band, etc. The music specification
information (track number Trn, start point ST, end point) registered in the adjustment music
database 25 only by specifying the EQ parameter for the frequency band to be adjusted, without
deciding the adjustment music by oneself The music suitable for the adjustment specified in ED)
will be reproduced. Therefore, since the user does not have to search for the tune for adjustment,
the user can concentrate on the adjustment and the EQ parameters can be adjusted more easily.
[0035]
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11
In the above-described audio apparatus, music specification information corresponding to the EQ
parameter for each frequency band can be registered in the adjustment music database 25.
However, it is a ready-made product in which such music specification information is registered
in advance by an expert. The adjustment music database 25 may be provided. In this case, the
audio apparatus may or may not have a function (see the process of FIG. 2) for registering the
music identification information in the adjustment music database 25.
[0036]
In the above-described audio apparatus, the music used to adjust the EQ parameters is read from
the reference CD, but the music may be read from other recording media, such as the Internet It
may be used via a network. When the network is used, the address of each music on the network
is used as music specification information in the adjustment music database 25.
[0037]
As described above, when the audio apparatus according to the present invention adjusts the EQ
parameters for each frequency band, the audio apparatus according to the present invention
specifies the music stored in advance in the storage unit even if the user does not decide the
music for adjustment. It has an effect that the music specified by the information can be
reproduced as a music for adjustment, and the adjustment of its EQ parameters can be performed
more easily, and it has an equalizer for adjusting the sound quality of the output sound. Useful as
an audio device.
[0038]
FIG. 1 is a block diagram showing a configuration of an audio device according to an
embodiment of the present invention.
It is a flowchart which shows the flow of the process at the time of EQ information registration in
the audio apparatus shown in FIG. It is a figure which shows the structural example of the music
database for adjustment. It is a flowchart which shows the flow of the process at the time of EQ
parameter adjustment in the audio apparatus shown in FIG.
Explanation of sign
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[0039]
11 playback unit 12 EQ unit (equalizer) 13 amplifier 14 speaker 21 EQ setting unit 22 EQ
information acquisition unit 23 playback song / position setting unit 24 playback song / position
acquisition unit 25 adjustment music database
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