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JP2003177769

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JP2003177769
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
so-called karaoke apparatus suitable for use in music education for young children.
[0002]
2. Description of the Related Art Conventionally, there has been known a karaoke apparatus
which synthesizes an audio signal inputted from a microphone and an accompaniment sound
recorded in advance and generates the sound through a sound system. Here, if the microphone is
always in the on state, a simple voice or the like will be pronounced through the sound system,
and depending on the position of the microphone there is also the problem of howling, etc. I
needed to.
[0003]
By the way, in the above-mentioned song practice device, it is necessary to turn on / off the
microphone with the start / end of the music, and the operation is complicated. In particular,
when using a singing practice device for music education for young children, it is preferable for
the young children to be able to operate alone, but when the microphone does not understand
how to turn on / off, it can not be operated, reducing learning motivation. It may be the result.
The present invention has been made in view of the above-described circumstances, and an
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object thereof is to provide a singing practice device which can be very easily operated.
[0004]
In order to solve the above problems, according to the present invention, there is provided a
sound source for generating an accompaniment sound of music according to performance
information, an input means for inputting an audio signal, the audio signal, and It is characterized
by comprising: synthesis means for mixing and outputting accompaniment sounds; and control
means for turning on / off the audio signal output according to the mike on data and mike off
data contained in the performance information.
[0005]
The control means appropriately turns on or off the audio signal in synchronization with the
progress of the music.
[0006]
EXAMPLES A.
First, the electrical configuration of a karaoke apparatus according to an embodiment of the
present invention will be described with reference to FIG.
In the figure, reference numeral 1 denotes an operator, which is provided with a trigger switch
operated by an operator, a joy pad, etc., and outputs the operation information thereof via the
bus 17. Reference numeral 2 denotes a touch pen, and the pen tip position is detected by the
tablet 3 as needed. Further, a switch is provided on the pen tip of the touch pen 2, and when the
pen tip is pressed against the tablet 3, its operation information is output from the touch pen 2
via the bus 17. A MIDI interface 4 transmits and receives MIDI signals to and from an external
device.
[0007]
A CPU 5 controls other components based on a program stored in the ROM cassette 7. Reference
numeral 6 denotes a RAM, which is readable / writable by the CPU 5. A graphic display
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controller 8 outputs a video signal based on image data supplied from the CPU 5. This video
signal is displayed on the display 9.
[0008]
Next, 10 is a sound source, which synthesizes and outputs a musical tone signal based on the
performance information supplied from the CPU 5. An effector 11 performs reverberation /
volume control and the like on the tone signal output from the sound source 10. A microphone /
effector 13 performs reverberation / volume control and the like on an audio signal input from
the microphone 12 under the control of the CPU 5. A digital audio processing circuit 14 converts
a digital audio signal supplied from the CPU 5 into an analog signal and outputs it. Also, the
digital audio processing circuit 14 can convert the signal supplied from the microphone effector
13 into a digital signal and store it in the RAM 6 via the bus 17. A mixer 15 mixes and outputs
musical tone signals and audio signals supplied from the effector 11, the microphone effector 13
and the digital audio processing circuit 14. The output mixed signal is pronounced via the sound
system 16.
[0009]
In the present embodiment, the sheet 20 shown in FIG. 6 is placed on the tablet 3. The sheet 20
is a simple print of various graphics on paper, but the sheet 20 is integrally formed with the ROM
cassette 7 and a currently open page is detected by a predetermined sensor. Then, when the
touch pen 2 is operated along the sheet body 20, the operation position is detected by the tablet
3 and the operation content is specified in relation to the currently open page. The details of this
technique are described in, for example, Japanese Patent Application Laid-Open No. 5-137846.
In the illustrated example, a picture of "bear" and "pig" is drawn on the left page of the sheet
body 20, and a picture of "monkey" and "carp" is drawn on the right page.
[0010]
B. Operation of Embodiment Next, the operation of this embodiment will be described. First, in
the present embodiment, together with the program as shown in FIG. 2, performance information
of various music pieces and animation video information corresponding to the music are stored
in the ROM cassette 7 as well as the program as shown in FIG. When the power is turned on and
the process of FIG. 2 is started, predetermined initialization is performed in step SP101. In this
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state, the microphone 12 is turned off. That is, since the attenuation amount of the output signal
of the microphone 12 is set to the maximum value in the microphone effector 13, there is no
inconvenience that the microphone noise is included in the performance and the other sound
generation. In addition, in this step, a message Select any animal is sounded from the sound
system 16 through the digital voice processing circuit 14 and the mixer 15, and the input pen 2
waits for input.
[0011]
Here, when the operator presses the touch pen 2 on the desired picture on the sheet body 20,
the music related to the animal is selected. In other words, pressing the touch pen 2 on the bear's
picture part will cause "Forest's Kuma" to touch the pig's picture part, and pressing the "three
little pigs" on the monkey's picture part When the "Cursor's bowl shop" is pressed against the
portion of the bowl, "the rabbit dance" is selected respectively. As described above, when the
selection of the music is completed, the process proceeds to step SP102, and the value of the
variable TM is set to "1".
[0012]
In the present embodiment, it is possible to issue a timer interrupt to the CPU 5 every
predetermined time, and when the process proceeds to step SP103 next, this timer interrupt is
permitted. Next, when the process proceeds to step SP104, an image as shown in FIG. 5A is
displayed on the display 9 via the graphic display controller 8. This image changes with the lapse
of time by repeating the process of step SP104 through step SP105, and is displayed as an
animation. In step SP105, it is determined whether all the images to be displayed have been
displayed, and if YES is determined here, the process ends.
[0013]
In the present embodiment, control of the accompaniment sound of karaoke is performed in the
timer interrupt processing routine (FIG. 3). The details will be described below. When the process
is started in the figure, at step SP1, the variable TM is decremented by "1". Next, when the
process proceeds to step SP2, it is determined whether or not the variable TM is less than or
equal to "0". Here, since the variable TM is set to "1" when step SP102 is executed first, the
variable TM becomes "0" when step SP1 is executed first. Therefore, in this case, "YES" is
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determined in step SP2, and the process proceeds to step SP3.
[0014]
In step SP3, performance information is read from a predetermined area in the ROM cassette 7.
Here, the configuration of the performance information is shown in FIG. Performance
information is event data 31, 33, 35, 36, ... that instructs pitch, note-on, note-off, etc., as with
general electronic musical instruments, and a time interval until the next event data is executed .,
And end data 39 indicating the end of the music. Further, in the present embodiment, the
microphone on data 37 instructing the microphone on and the microphone off data 38
instructing the microphone off are provided.
[0015]
In the timer interrupt processing routine, these pieces of performance information are read out
sequentially from the top every time step SP3 is executed. Therefore, when step SP3 is executed
first, event data 31 is read. Next, when the process proceeds to step SP4, the process is branched
according to the type of the read data. Since the event data 31 is data relating to a music event,
the process proceeds to step SP10. In step SP10, a tone generation command is issued to the
sound source 10 based on the contents of the read event data. For example, if the event data 31
is a note-on event, a tone generation channel, pitch, velocity, key-on signal, etc. are supplied to
the sound source 10. Then, based on these, musical tone signals are synthesized and sounded
through the sound system 16.
[0016]
Thus, when the tone control process of step SP10 is completed, the process returns to step SP3
and the next performance information is read. In the example shown in FIG. 4, since the next
performance information is the duration data 32, the process proceeds to step SP11 through
step SP4. In step SP11, the variable TM is updated based on the duration data 32. For example, if
the content of the duration data 32 is "180 msec" and the timer interruption occurs every "10
msec", the variable TM is set to "18" which is the division result of the two. Then, when the above
processing ends, the processing returns to the main routine (FIG. 2).
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[0017]
Thereafter, when a timer interrupt occurs every "10 msec", the variable TM is decremented by
"1" by one via step SP1, but it is determined as "NO" at step SP2 and the processing immediately
proceeds to the main routine (FIG. 2). Return to After repeating this "17" times, when a timer
interrupt occurs again, the variable TM becomes "0". Therefore, in this case, the process proceeds
to step SP3 and the next event data 33 is read. Thereafter, similarly, while the microphone 12 is
turned off, event data or duration data is sequentially read out, and reproduction of music
proceeds.
[0018]
Thereafter, when the microphone on data 37 is read in step SP3, the process proceeds to step
SP6 through step SP4. In step SP6, the microphone 12 is set to the on state in the microphone
effector 13, and an echo is given to the output signal of the microphone 12. Therefore,
thereafter, the audio signal input from the microphone 12 is sounded through the mixer 15 and
the sound system 16. Next, when the process proceeds to step SP7, as shown in FIG. 5B, in the
upper right corner of the display 9, the graphic 51 treated with the shape of the microphone is
displayed in a blinking manner. This enables the operator to visually recognize that voice input
by the microphone has become possible.
[0019]
When the above process is completed, the process proceeds to step SP3 and the same process as
described above is repeated. In step SP105 of the main routine (FIG. 2), a blowout unit 50 is
formed at the top of the screen, and a song is displayed here. The background color of the
blowout unit 50 is "white" and the character color is "black", but the background color is
sequentially changed from "left" to "right" in synchronization with the progression of the music.
That is, the background color is changed so that the portion to be sing now is located at the
border portion of the background color. This allows the operator to visually recognize the part to
be sing.
[0020]
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Thereafter, when the music progresses and the microphone off data 38 is read out, the process
proceeds to step SP8 through step SP4. In step SP8, the microphone 12 is set to the off state in
the microphone effector 13. Then, when the process proceeds to step SP9, the display of the
graphic 51 in the upper right corner of the display 9 is erased. This enables the operator to
visually recognize that voice input by the microphone has become impossible. Thereafter, the
same process as described above is repeated, and when end data 39 is read in step SP3, the
process proceeds to step SP12 through step SP4. In step SP12, the subsequent timer interrupt is
inhibited, and the process returns to the main routine.
[0021]
As described above, according to the karaoke apparatus of the present embodiment, the on / off
of the microphone 12 is automatically performed according to the progress of the music (steps
SP6 and 8), and the on / off state of the microphone 12 is shown in FIG. Since it can be
recognized visually, even infants can easily operate.
[0022]
C.
Modifications The present invention is not limited to the embodiments described above, and
various modifications are possible. For example, although the on / off timing of the microphone
12 is controlled by including the microphone on data 37 and the microphone off data 38 in the
performance information in the above embodiment, the performance information is sent to the
sound source 10 and the microphone 12 is set to the on state. Microphone control means may be
provided to set the microphone 12 to the off state at the end of the performance, or the
microphone 12 may be turned on after a predetermined time has elapsed from the start of the
performance.
[0023]
D. Embodiments The present invention has the following embodiments. "The song practice
device according to claim 1, further comprising display means for displaying the on / off state of
the audio signal." According to this aspect, since the on / off state of the audio signal can be
visually recognized, it is possible to operate more easily.
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[0024]
As described above, according to the singing practice device of the present invention, since the
on / off state of the audio signal is automatically set, it is possible to operate very simply.
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