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JP2007232916

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DESCRIPTION JP2007232916
[PROBLEMS] To enable generation of tone data for a lower model with a higher model while
checking the sound generation in the lower model. An electro-acoustic conversion system
includes an amplifier 18 connected to a sound source 5, an equalizer 20, a woofer 25, a
squawker 26, and a tweeter 27. The squawker 26 also operates as a full range speaker when not
via the network 23. The relay circuit 21 has a common terminal T0 connected to the equalizer
20, a first contact point T1 connected to the networks 22 to 24, and a second contact point T2
connected to the squawker 26. The CPU 7 limits the output of the amplifier 18 when the lower
model mode is selected, controls the frequency characteristic by the equalizer 20, and limits the
speaker connected to the equalizer 20 to only the squawker 26. Switch between [Selected figure]
Figure 1
Electronic musical instrument
[0001]
The present invention relates to an electronic musical instrument, and more particularly to an
electronic musical instrument capable of restricting the functions of a host model when creating
tone data for a host model and a lower model.
[0002]
In electronic musical instruments such as electronic organs and electronic pianos, there is
compatibility in usable data, and one product series consisting of multiple models configured so
that the function of the upper model includes the function of the lower model is formed I have
something to do.
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[0003]
In JP-A-11-073185, it is possible to provide a plurality of models (models) at a low price, and to
ensure compatibility of resist data and resist sequence used between the respective models. The
instrument is described.
[0004]
Further, in Japanese Patent Laid-Open No. Hei 6-75564, musical tone control data specified for
each different model is mutually exchanged so that musical tone control data which is not
completely identical between different models can be shared among these models. An electronic
musical instrument having an associated data table is described.
JP-A-11-073185 JP-A-6-755647
[0005]
As described above, data compatibility among multiple models has been made.
However, in one product series, the electroacoustic conversion series are generally different
between the upper model and the lower model.
That is the difference in the number of speakers, or the size of the amplifier. The difference
between the electroacoustic conversion sequences may cause, for example, the following
inconvenience.
[0006]
Generally in the music classroom, teachers use higher-end models and students use lower-end
models. The teacher then uses the higher-end model electronic musical instrument to set data for
tone generation for the student, correct the data created (played) by the student, and show an
example. On the other hand, the students play using setting data created by the teacher using a
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lower model electronic musical instrument, or listen to the music created by the teacher to model
lessons.
[0007]
When setting data for tone generation using a high-end model electronic musical instrument, it is
usual to create data by enabling all of the electroacoustic conversion series provided in the
electronic musical instrument. However, when the teacher is creating data by making full use of
the functions of the high-end model electronic musical instrument, how is the created data
reproduced on the low-end model for students with only low functions I can not predict exactly
what. This is because, in the lower model, the number of speakers is limited or the amplifier
characteristic is different from that of the upper model, so that the acoustic characteristic
changes.
[0008]
Therefore, there is a problem that it is desirable to be able to confirm the acoustic characteristics
of the tone to be generated by the lower model using the data while creating data for the lower
model with the upper model electronic musical instrument.
[0009]
An object of the present invention is to provide an electronic musical instrument capable of
solving the above-mentioned problems and easily creating data suitable for lower models by
higher models.
[0010]
The present invention for solving the above-mentioned problems and achieving the object of the
present invention is an electronic product forming one product series which is compatible with
setting data and in which the function of the upper model includes the function of the lower
model. In the musical instrument, a low-end model mode that instructs the setting of the low-end
model mode for creating data for lower-end models, and the cancellation of the low-end model
mode. A change switch and function limiting means for limiting the functions of the electroacoustic conversion series that can be used to those corresponding to that of the lower model in
response to the setting instruction of the lower model mode, the restriction by the function
limiting means The first feature is that the device is configured to be released in response to a
release instruction of the lower model mode.
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[0011]
The second feature of the present invention is that the function limitation is to adapt the number
of electroacoustic conversion sequences or the magnitude of the output to that of a lower model.
[0012]
Furthermore, according to the present invention, frequency characteristic setting means for
setting the frequency characteristic of the electroacoustic conversion series to a lower model, and
means for energizing the frequency characteristic setting means in response to a setting
instruction of the lower model mode. There is a third feature in the point equipped.
[0013]
According to the present invention having the first to third features, when the lower model mode
is set by the lower model mode change switch, the function of the electroacoustic conversion
series is limited, and for example, the output of the electroacoustic conversion series is It may be
suppressed or the frequency band of sound generation may be limited.
Further, according to the third feature, the frequency characteristic is adjusted to be compatible
with the lower model.
Therefore, when creating data to be used in the lower model with the upper model, it is possible
to create data while checking the sound generation in the lower model.
[0014]
Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 2 is a block diagram showing a hardware configuration of an electronic keyboard instrument
according to an embodiment of the present invention.
The electronic keyboard instrument 1 is one model in a product series consisting of a plurality of
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models compatible with setting data, and is a higher model including functions of other lower
models.
[0015]
In FIG. 2, the electronic keyboard instrument 1 comprises a keyboard 2, an operation panel 3, a
display panel 4, a sound source 5 and a sound system 6, and a CPU 7 for controlling these.
Further, the storage device includes a program memory 8 for storing a program processed by the
CPU 7, a waveform memory 9, an automatic performance data memory 10, and a RAM 11 for
storing various data. A flexible disk drive (FDD) 12 is connected as an external storage device.
The FDD 12 writes the information created by the electronic keyboard instrument 1 on the
flexible disk, and the written information is read out to the electronic keyboard instrument 1 as
needed. The external storage medium is not limited to the flexible disk, and may be a memory
card, an MO disk, a CD, a DVD, or the like.
[0016]
The keyboard 2 includes a keyboard interface 13 including a key sensor that detects key
depression and key release. The keyboard interface 13 detects key depression and key release
operation of the keyboard 2 to generate key information such as key on, key off, key number,
velocity and the like. The CPU 7 controls the sound source 5 according to a program based on
key information and instruction information, and generates a tone signal based on waveform
data of a tone read from the waveform memory 9.
[0017]
The operation panel 3 includes a panel interface 14 and is an instruction input device including a
main switch, a volume control, and various registration switches and selection switches. The
selection switch includes a subordinate model mode change switch. The display panel 4 is an
information display device including an LCD (Liquid Crystal Display Device), and includes a
display controller (display interface) 15.
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[0018]
The sound system 6 includes, as speakers, a low-frequency woofer, a full-range speaker, and a
high-frequency tweeter. The full-range speaker is also used as a mid-tone scouker by supplying
musical tone signals via a network of band pass filters. A D / A converter 16 and an amplifier 18
are provided between the sound source 5 and the sound system 6. The CPU 7, the interfaces 13,
14 and 15, the storage devices 8, 9 and 10, and the sound source 5 are connected to a bus line
19.
[0019]
A tone signal generated by the sound source 5 is converted into an analog tone signal by the D /
A converter 16 and is subjected to analog signal processing such as effect application as
required. The analog tone signal is produced from the sound system 6 through the amplifier 18.
[0020]
FIG. 3 is a flowchart according to the main routine of the electronic keyboard instrument 1. As
main processing, initialization (step S1), timer processing (step S2), panel processing (step S3),
keyboard processing (step S4), sound source processing (step S5), automatic accompaniment
processing by sequencer (step S6), disc A process (step S7) and a display process (step S8) are
performed. As initialization, various registers, counters, flags, etc. are initialized. The timer
process sets various timers. In the panel processing, processing of an event determined by the
monitoring operation of the state of switches and volumes provided on the operation panel 3 is
performed. In the keyboard processing, the operation of the keyboard 2, that is, the presence or
absence of a keyboard event is determined by the output monitoring operation of the key sensor
provided for each key of the keyboard 2. If there is an event, the processing is performed. In the
automatic accompaniment process, for example, in the case of synchro start, musical tone data
for automatic accompaniment is read out from the sequencer to the tone generator 5 in
accordance with a performance operation. In disk processing, the results processed in this main
routine are stored in a flexible disk. In the display processing, the result processed in this main
routine is displayed on the display panel 4.
[0021]
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The main routine is a known process except for the panel process. The panel processing
including the features of the present invention will be described in detail. FIG. 4 is a flowchart of
panel processing. In step S31, it is determined whether or not it is a subordinate model mode
change event. This is determined by whether or not the lower model type mode change switch of
the operation panel 3 is turned on. If the subordinate model mode change switch is on, the
process proceeds to step S32 to invert the subordinate model mode flag. That is, if the flag is on,
it is lowered, and if it is off, it is turned on. In step S33, mode change processing (described later
with reference to FIGS. 1 and 5) is performed. If it is not the subordinate model mode change
event, the process proceeds from step S31 to step S34, and the process is performed according
to the operation of the other switches on the operation panel 3. The other panel processing is not
a feature of the present invention, and thus the details thereof will be omitted.
[0022]
Next, the mode change process (step S33) will be described in detail. When creating musical tone
data for the lower model with the high-end model electronic keyboard instrument 1, even if the
data is created by fully utilizing the functions possessed by the upper model, the lower model
with inferior function performs the musical tone according to the data It is impossible to
reproduce. That is, if the electronic keyboard instrument 1 which is the upper model has an
electro-acoustic conversion series having a larger output than the lower model or has a larger
number of electro-acoustic conversion series than the lower model, The tone confirmed can not
be reproduced by the lower model. Therefore, for example, it is convenient that a user who is a
teacher of a music classroom can check the sound generation of the lower model while creating
data in the upper model. In this embodiment, when the low-order model mode change switch is
turned on to change to the low-order model mode, the electro-acoustic conversion series is
limited to be adapted to the low-order model.
[0023]
FIG. 1 is a block diagram showing an electro-acoustic conversion series of the electronic
keyboard instrument 1. The electro-acoustic conversion series includes an amplifier 18
connected to the sound source 5, an equalizer 20, a relay circuit 21, and a plurality of networks
22, 23, 24 and a woofer 25 and a scooka 26 connected to each of the networks 22-24. And a
tweeter 27. The squawker 26 is configured to operate as a full range speaker without passing
through the network 23.
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[0024]
The network 22 is a low pass filter, the network 23 is a band pass filter that passes the middle
band, and the network 24 is a high pass filter. The relay circuit 21 has a common terminal T0
connected to the equalizer 20, a first contact point T1 connected to the networks 22 to 24, and a
second contact point T2 connected to the squawker 26.
[0025]
When the lower model mode is selected, the CPU 7 limits the output of the amplifier 18, controls
the frequency characteristic with the equalizer 20, disconnects the networks 22 to 24 from the
equalizer 20, and connects the squawker 26 to the equalizer 29. Control the relay circuit 21 so
that
[0026]
FIG. 5 is a flowchart of the mode change process.
In step S331, the lower model change mode flag is determined. If the lower model change mode
flag is set, the process proceeds to step S332, and the output of the amplifier 18 is limited to the
preset level for the lower model. ステップS333では、イコライザ20をオンにする。 The
equalizer 20 is preferably a graphic equalizer, but may be a filter that cuts a specific frequency
band. The equalizer 20 and the filter are set in advance to the frequency characteristics for the
lower model, and are activated here.
[0027]
In step S334, the relay circuit 21 is switched to the second contact point T2 side. As a result, the
networks 22, 23, 24 are disconnected from the output side of the equalizer 20, and the output
side of the equalizer 20 is directly coupled to the squawker 26.
[0028]
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If it is determined in step S331 that the lower model change mode flag is down, there is no need
to restrict the electroacoustic conversion series for the lower model, so the process proceeds to
step S335 to release the output restriction of the amplifier 18 and set the level for the upper
model. Wake up. In step S336, the equalizer 20 is turned off to release the restriction of the
frequency characteristic. In step S337, the relay circuit 21 is switched to the first contact point
T1 side. Thereby, the output of the equalizer 20 is connected to all the speakers via the networks
22, 23 and 24.
[0029]
As described above, in the present embodiment, the electroacoustic conversion series can be
restricted for the lower model or restored to the upper model by the mode change process. In
addition, although the example which adjusted all the amplifier output, the frequency
characteristic, and the number of speakers for the low-order model was shown, this invention is
not limited to this example. At least one of the adjustment of the amplifier output, the frequency
characteristic, and the number of speakers may be performed. Further, the number of speakers is
not necessarily limited to one, and may be adjusted to the number of speakers in the lower
model. In short, the switching may be performed so as to be compatible with the electro-acoustic
conversion series lower than the self among the same product series whose functions are known
in advance.
[0030]
FIG. 7 is a block diagram showing an electro-acoustic conversion sequence of the electronic
keyboard instrument according to the embodiment of the present invention. FIG. 1 is a block
diagram showing a hardware configuration of an electronic keyboard instrument according to an
embodiment of the present invention. It is a flowchart which shows the main routine of an
electronic keyboard instrument. It is a flowchart which shows panel processing. It is a flow chart
which shows mode change processing.
Explanation of sign
[0031]
Reference Signs List 3 operation panel 5 sound source 6 sound system 7 CPU 18 18 amplifier 20
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equalizer 21 relay circuit 22 23 24 network 23 woofer 26 Skooka / full-range speaker 27 ... Tsita
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