JPH0363087A - Melody generator - Google Patents

Abstract

PURPOSE:To operate a doll or the like to be accurately interlocked with musical sounds by giving a drive signal prepared on the basis of music sound data of a memory to an operating means and providing a control means for controlling the operation of the operating means to be tuned to a melody generated from a melody generator. CONSTITUTION:A solenoid driving section 13 comprises a circuit for supplying signals for driving a plurality of solenoids 14 to operate a puppet. Every time a note switching signal is applied from an address control section 8, an envelope data from a ROM 9 for memory sound data melody are read-out and the drive signal having pulse width corresponding to then envelope data is supplied to a solenoid 14. For example, 0.98ms pulse width drive signal is supplied in the envelope value 0, and 9.77ms pulse width drive signal which is ten times 0.98ms one is supplied in the envelope value 9. Thus, the pulse width of the drive signal is determined on the basis of the envelope of individual music sounds to be supplied to the solenoid 14, so that a doll or the like can be controllably operated precisely to follow changes in the individual music sounds.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a melody generating device that causes a doll or the like to perform desired movements in accordance with a melody.

[Prior art and its problems]

Conventionally, in devices that perform desired actions in time with musical sounds, such as toys that make dolls move in time with melodies, or mechanical clocks, analog musical sound signals are amplified by an amplifier, and the amplified analog signals are driven. It is known that the signal is supplied to a drive unit as a signal to cause a doll or the like to perform various movements in accordance with a melody.

However, with devices that amplify analog musical tone signals and supply them as drive signals to the drive unit, there is an upper limit to the frequency that the drive unit can follow. It becomes impossible to make it work. Further, even when the volume of the musical tone is low, the level of the drive signal supplied to the driving section becomes low, and there is also a drawback that it is no longer possible to move the doll or the like in conjunction with the musical tone.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a melody generating device that can move a doll or the like in accurate synchronization with musical tones.

[Key points of the invention]

The present invention provides driving signals created based on digital musical tone data such as pitch data, tone length data, and envelope data of musical tones stored in a storage means to generate a melody to the operating means. The operation means is operated in accordance with a melody created from the musical sound data, and a desired operation can be performed in precise synchronization with the generated melody.

(Example〕 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram of a mechanical clock according to an embodiment of the present invention.

In the figure, an oscillation circuit 1 is a circuit that generates a clock signal with a constant period, and outputs the generated clock signal to a frequency dividing circuit 2. The frequency dividing circuit 2 creates a clock signal that is a reference for time measurement, and also generates a solenoid drive unit 13 which will be described later.
1024Hz signal to be supplied to, and that 1024Hz signal
The signal Φ is synchronized with the falling edge of the 1024Hz signal at the same frequency as . Create.

The step motor drive circuit 3 creates a drive signal for driving the step motor 4 from the clock signal.

The wheel train mechanism 5 has a plurality of gears that drive a pointer 6 consisting of an hour hand, a minute hand, and a second hand, and these gears are driven by the step motor 4 to rotate the pointer 6 and display the current time.

The hour detection mechanism 7 is a mechanism that detects the hour from the state of the wheel train mechanism 5, and outputs an hour signal to the address control unit 8 when it detects the hour.

The address control section 8 includes a ROM 9 for storing melody sound data.
This is a circuit that specifies the read address of the melody sound data storage ROM, and each time a one-tone end signal is received from the melody sound synthesis circuit 10, which will be described later, the incremented address is sent to the ROM for storing melody sound data.
9 to instruct reading of the next musical tone data, and output a note switching signal to the solenoid driving section 13 to notify that reading of new musical tone data has been instructed.

The melody sound data storage ROM 9 is a ROM that stores pitch data, note length data, and envelope data for each note of musical tones as digital data, and stores these data at the address specified by the address control unit 8 as a melody sound data storage ROM 9. The envelope data is output to the sound synthesis circuit 10, and the envelope data is output to the solenoid drive section 13.

The melody tone synthesis circuit 10 is a circuit that synthesizes an analog musical tone signal from the pitch data, tone length data, and envelope data, and outputs the synthesized musical tone signal to the speaker driver 11, and also outputs the synthesized musical tone signal to the speaker driver 11 every time the synthesis of one tone is completed. A one-tone end signal is output to the address control section 8.

The speaker driver 11 transmits the musical tone signal to the speaker 12.
The amplified signal is output to the speaker 12 as a musical tone.

The solenoid drive unit 13 is a circuit that supplies signals to drive a plurality of solenoids 14 that operate the karakuri doll, and every time a note switching signal is applied from the address control unit 8, the solenoid drive unit 13 converts the envelope data from the ROM 9 into the melody sound data recorder. is read, and a drive signal with a pulse width corresponding to the envelope data at that time is supplied to the solenoid 14.

FIG. 2 is a detailed circuit diagram of the solenoid drive section 13.

In the same figure, a note switching signal from the address control section 8 is input to the set terminal of the clip-flop f5.
The flip-flop f5 is set every time the musical tone data read from the melody tone data storage ROM 9 is switched.

The AND gate 21 includes the Q of the flip-flop f5.
The output and the 1024Hz signal from the frequency divider circuit 2 are input, and the output is connected to the T input terminal of the flip-flop f+,
It is input to the clock terminal of flip-flop f6.

The Q output of the flip-flop f+ is input to the OR gate 22 and the T input terminal of the next-stage flip-flop f2. The Q output of this flip-flop f2 is the OR gate 2
3 and the T input terminal of the next stage flip-flop f3. Further, the Q output of the flip-flop f3 is input to the OR gate 24 and the T input terminal of the next-stage flip-flop r4. Furthermore, the Q output of the flip-flop f4 is input to the OR gate 25.

Envelope data from a ROM 9 for storing melody sound data is input to the other input terminals of each of the OR gates 22-25.

In this embodiment, the envelope data is composed of 4-bit data, and the lowest 1st bit of the envelope data is inverted by the inverter 26 and inputted to the OR gate 22, and the 2nd bit of the envelope data is inverted by the inverter 27. It is inverted and input to the OR gate 23. Similarly, the third bit of data is inverted by the inverter 28 and input to the OR gate 24, and the fourth bit of data is inverted by the inverter 29 and input to the OR gate 25.

The outputs of each of the OR gates 22 to 25 are input to a four-way AND gate 30, and the output of the AND gate 30 is fed to the D input terminal of the flip-flop f6.

The AND gate 31 includes the Q of the flip-flop f6.
output and signal Φ from frequency divider circuit 2. is input, and the output of this AND gate 31 is output to the reset terminal of each flip-flop f4 and the T input terminal of flip-flop f5.

Further, the Q output signal of the flip-flop f5 is output as a drive signal for the solenoid 14 to the base resistors R1 to R5 of the five transistors TR1 to TR5 via two inverters 32 and 33.

The collectors of each of the transistors TR1 to TR5 are connected to one end of five solenoid coils 14a whose other ends are connected to a positive power supply, and change the control amount of the five solenoids 14 according to the drive signal given to the base. Control the movements of dolls, etc.

Next, the operation of the above circuit will be explained with reference to the timing chart of FIG.

When the output of one note is completed and a note switching signal is output from the address control section 8, first, the flip-flop f
5 is set, and a high level signal is sent to the transistor TR.
The signal is output from I to the base of TR5, and the driving of the solenoid 14 is started.

Further, this high level signal is applied to the AND gate 21, which opens the AND gate 21, and a 1024 Hz signal is applied to the T input terminal of the flip-flop fl.

Here, each of the flip-flops fI to f4 is configured so that its output is inverted in synchronization with the fall of the signal input to the T input terminal, and the output of the flip-flop fl is
It is inverted in synchronization with the falling edge of the 1024Hz signal, and 1
A 512 Hz signal obtained by dividing the frequency of the signal 024 & by 2 is output to the OR gate 22 and the next stage flip-flop f2.

Furthermore, from flip-flop f2, 512)(
The signal obtained by dividing the frequency of the z signal by 2 (256Hz signal) is
It is output to the OR gate 23 and the next stage flip-flop f3.

Similarly, a signal (128Hz signal) obtained by dividing the 512-touch signal by two from the flip-flop f2 is output to the OR gate 24 and the next flip-flop f3, and a 128-touch signal is divided by two from the flip-flop r4. The circulated signal (signal at 64) is output to the OR gate 25.

On the other hand, the envelope data from the melody sound data storage ROM 9 is input to the other input terminals of the OR gates 22 to 25 via inverters 26 to 29, and the least significant bit of the envelope data is inverted to the OR gate 22. The next second bit of envelope data is inverted and input to the OR gate 23. Further, the 3rd bit envelope data is inverted and input to the OR gate 24, and the 4th bit envelope data is inverted and input to the OR gate 25 manually.

Either of these envelope data and each signal obtained by dividing the frequency of 1024 Hz output from each flip-flop sushi~f4 described above becomes high level,
When the outputs of the four OR gates 22 to 25 all become high level, the output of flip-flop f6 becomes high level, the output of flip-flop f5 is inverted to low level, and the solenoid drive signal changes to low level. .

Now, when the note switching signal is applied to the flip-flop f5, the flip-flop f5 is set, the transistors TRI to TR5 are turned on, and the solenoid 14 is driven.

At this time, if the envelope data read from the melody sound data storage ROM 9 is, for example, "7", each OR gate 22 to 25 is filled with data rlooo which is an inverted version of rollJ representing "7" in binary. is given.

Then, the signal of 10241-[z is sent to the flip-flop f
.

10 from each flip-flop f+-fa.
OR gate 2 corresponds to the signal obtained by dividing the 24Hz signal.
2 to 25.

At this time, since the envelope data has the above value, the other inputs of the OR gates 22 to 24 are at a low level, and the other inputs of the OR gate 25 are at a high level. and,
As shown in FIG. 3(1), when the output of flip-flop f+ becomes high level at the falling edge of the 7th clock of the signal 1024, flip-flops fl, fz
, f3 all become high level, the outputs of the four OR gates 22 to 25 all become high level, and the output of AND gate 30 becomes high level as shown in FIG. 3(2).

Then, this high-level signal is latched into the flip-flop f6 in synchronization with the rise of the next 1024 Hz signal (8th clock), and the AND gate 31 is opened.
given to 5. This signal Φ. As a result, the output of the flip-flop f5 is inverted, and the drive signal for the solenoid 14 changes to low level ((3) in FIG. 3).

That is, when the envelope data is "7", as shown in FIG. 3 (3), for 8 clocks of signal Φ0, 8÷
1024'; 7.8 Ins, high speed) L/ drive signal is applied to the solenoid 14.

Similarly, for example, when the envelope data is "3", rlloo is the inverted binary number "0O11".

4 of the 1024 Hz signal is given to the OR gates 22 to 25, and the first and second flip-flop outputs both become high level.
During the 4th clock, that is, the 4th clock of the signal Φ0, (4
+1024# for 3.91ms), Hi-Rehe/L/ (
7) A drive signal is provided to the solenoid 14.

Through the circuit operation described above, a drive pulse having a pulse width corresponding to the envelope value as shown in FIG. 4 is generated and supplied to the solenoid 14.

For example, when the envelope value is rQJ, a drive signal with a pulse width of 0.98 ms is supplied, and the envelope value is "9".
At the time of , a drive signal with a pulse width of 9.77 ms, which is 10 times that, is supplied.

As described above, since the pulse width of the drive signal is determined based on the envelope value of each musical tone and the drive signal is supplied to the solenoid 14, the control amount of the solenoid can be adjusted to follow the change in each musical tone. It is possible to make minute changes and to control the movements of dolls, etc. more precisely.

Next, a second embodiment of the present invention will be described with reference to FIG. 5, in which the current flowing through the solenoid is controlled based on envelope data.

FIG. 5 shows a circuit for controlling the current flowing through one solenoid, and each of the five solenoids 14 that control the operation of the doll has almost the same configuration.

16 resistors Rn and 16 transistors Trn are connected in parallel to the solenoid coil 14a.

An independent drive signal is given to the gate of each transistor T r l - T r +b from the conversion circuit 41, and the number of transistors turned on among the 16 transistors connected in parallel can be changed. By changing the resistance value connected to the solenoid coil 14a, the current flowing through the coil 14a is controlled.

The conversion circuit 41 is a decoder circuit that outputs a signal according to the value of input envelope data, and has 16 output terminals 0. ~016, a high level signal corresponding to the envelope value is output, and one or more transistors Tr. Turn on.

The pulse generating circuit 42 is a circuit that outputs a drive signal of a constant width (for example, a lOffls signal) in synchronization with the note switching signal. 1
4a is driven.

According to the above circuit, for example, when the envelope data is the maximum value "15" as 4-bit data, all the output terminals 01 to 016 of the conversion circuit 41 become high level, and the 16 transistors Tr.

~TrIb are all turned on, and the current flowing through the solenoid coil 14a becomes maximum. Further, if the envelope value is the minimum value "0", the output terminal 0 of the conversion circuit 41. only one transistor is turned on, and the current flowing through the solenoid coil 14a is minimized.

In this way, the current flowing through each solenoid changes depending on the envelope value, and when the envelope value is small, the driving force of the solenoid becomes weaker and the doll's movement becomes smaller.
When the envelope value is large, the driving force of the solenoid becomes strong and the movement of the doll becomes large.

As described above, according to the first and second embodiments, the drive pulse width or drive current of the solenoid is changed according to the envelope data among various data constituting a musical tone. It becomes possible to finely control the movements of the puppets by making them follow the musical sounds of the dolls.

In the embodiment, the movement of the doll is controlled based on envelope data, but the control is not limited to this, and may be controlled using other musical sound data such as pitch data and note length data.

Furthermore, although the embodiment describes a case where one type of musical tone is output, the present invention can also be applied to a case where a plurality of musical tones are output simultaneously or independently or in parallel.

In this case, according to the present invention, it is possible to control the plurality of dolls independently based on the musical tone data of each of the plurality of musical tones, or to control the movement of the same doll using the plurality of musical tone data. As a result, it is possible to realize complex movement control that cannot be achieved with conventional control using analog musical tone signals, and it is possible to make the doll perform a wider variety of movements.

Further, the present invention is applicable not only to the above-mentioned mechanical clock but also to other devices such as toys that move dolls or the like in accordance with a melody.

[Effects of the Invention] According to the present invention, since the movements of the dolls, etc. are controlled based on digital musical tone data for generating melodies, the movements of the dolls, etc. can be finely controlled in conjunction with the musical sounds. becomes possible.

[Brief explanation of drawings]

Fig. 1 is a circuit diagram of a mechanical clock according to an embodiment of the present invention; Fig. 2 is a circuit diagram of the solenoid drive section of Fig. 1; and Fig. 3 is a timing chart showing the operation of the solenoid drive section. , FIG. 4 is a chart explaining the relationship between the envelope value and the drive pulse width in the first embodiment, and FIG. 5 is a circuit configuration diagram of the main part of the second embodiment. 9...ROM for storing melody sound data, melody sound synthesis circuit, speaker, solenoid drive unit, solenoid, conversion circuit, pulse generation circuit.

Claims (1)

[Scope of Claims] Storage means for storing musical sound data; melody generation means for sequentially reading the musical sound data stored in the storage means and generating a melody; operating means for performing a predetermined operation; A melody generating device comprising: control means for applying a drive signal created based on data to the operating means and controlling the operation of the operating means in accordance with the melody output from the melody generating means.