JPS6230069Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention provides an electronic music box that is smaller, lighter, and thinner by generating music box sounds electronically instead of using a conventional drum system. In addition, the present invention is an electronic music box that allows users to freely input music box songs manually, and allows them to listen to a variety of songs by purchasing one music box without having to buy a new one or replace the drums. It provides a music box. Furthermore, the present invention provides an electronic music box that can be turned over and used freely as a complete automatic music composer (automatic musical instrument) for karaoke or for practicing musical instruments. Hereinafter, the present invention will be explained in detail based on examples. 1 is a perspective view showing the external appearance of an embodiment of the present invention, FIG. 2A is a sectional structural diagram of the embodiment, FIG. 2B is a switch circuit diagram for explaining the embodiment,
The figure is a perspective view showing the external appearance of the electronic melody generator incorporated in the same embodiment, and FIGS. 4 to 8 are
FIG. 2 is a drawing for explaining the configuration of the electronic melody generating device. Hereinafter, the description will proceed with reference to the above drawings. In Figure 1, 1 is the lid, 2 is the mirror, 3 is the bottom box, 4
5 is a storage compartment, and 5 is a switch for starting an electronic melody. When the lid 1 is opened, a switch 5 is turned on and an electronic melody is generated. In FIG. 2A, 6 is an electronic melody generator, 7 is a speaker, and 81 and 82 are contacts of the switch 5. FIG. 3 shows an electronic melody generator, in which 9 is the main body, 10 is a touch type key switch section, 11 is a mode switch for selectively selecting melody program writing mode W and reading mode R; 12 is a volume adjustment volume. The switch 5 shown in FIG. 2A is connected in parallel to the clear key switch CL, as shown in FIG. 2B. That is, clear key switch CL
As will be described later, in the read mode R, the switch serves as a start switch for the electronic melody, so when the lid 1 is opened and the contacts 81 and 82 are short-circuited, the melody starts. When this music box is placed face down and used for karaoke or musical instrument practice, the melody can be started by operating the clear key CL without opening the lid 1 and shorting the contacts 81 and 82. The configuration of the electronic melody generating device will be explained below with reference to FIGS. 3 to 10. The numerical keys □0 to □8, the sharp key □#, and the flat key 〓 are used to determine the pitch of the sound, and as shown in FIG. 4, the pitch of each sound and the pressed state of the key are shown. The upper digits of the number specify the octave, and the lower digits specify the pitch within the octave. This melody generator is designed to be able to specify three octaves such as 0, 1, and 2. In reality, there are 12 different pitches within an octave, including semitones, as shown in Figure 5. Therefore, as for key input, the final pitch of the sound is specified by additionally pressing the sharp key □# and the flat key 〓 in accordance with the method shown in FIG. The tone length keys 〓〓...〓〓 determine the length of the note. Whether it is a rest or a note will be explained later, but it can be automatically determined whether a key that determines the pitch of the note was pressed before that. Note length addition key □・ is 1/2 like 〓
This is an instruction key for adding the length of . The clear key CL serves as a start state instruction key in program writing mode W, and serves as a performance start key in program reading mode R. The program end instruction key is a key for instructing the end of the song. The operating method will be explained using FIGS. 6 and 7. Figure 6 is an example score. FIG. 7 shows a table of key presses and associated control, but here we will refer to the key switch section. The key pressing method in the present melody generating device can be understood from FIG. After programming the song using the above key operations,
When the mode changeover switch 11 is switched to read mode R and the clear key CL is pressed, a song is automatically played from the speakers in accordance with the musical score shown in FIG. This control will be explained using FIGS. 8 to 10. [Program writing] Set the mode changeover switch 11 to mode W. Whether or not it is in the W direction is determined by the W judgment circuit JW. If the switch is on the W side, proceed to step n ₁ → n ₂ . Note that a slide switch is preferable as the mode changeover switch. It detects which of the following keys has been pressed, and this is done by sequentially checking steps n ₂ → n ₃ →...n ₈ . Press the clear key CL to proceed to step n ₉ .
Reset address counter P of program memory Y (input 0) and designate the first step.
DC is an address decoder. As will be described later, the RS flip-flops A and B are reset and the process proceeds to step _n12 . For example, X is a 10-bit register, and has 5-bit areas each of X _A and X _B. In step _n12 , a micro order is generated, and 0 is put into X _A and X _B , essentially resetting X _A and X _B. In this way, as shown in Figure 7, first, in order to program in the first note (C major note), press the numerical key □1 indicating the second octave.
Press. It is detected that the pressed key is a numeric key (detection circuit omitted), the program proceeds to steps n ₃ → n ₁₃ , the fact that a numeric key has been pressed is memorized by setting flip-flop B, and step
Proceed to n ₁₄ . n ₁₄ is a step to distinguish between the first numeric key (which determines the octave) and the second numeric key (which indicates the height within the octave).
When pressing the numeric key for the first time, RS flip-flop A was reset in the previous step _n10 , so A=
0, proceed to step _n15 . The first numeric key press is stored in A set. Step n ₁₆ transfers the contents of register X to program memory Y.
This is the step for inputting the information. Note that the program memory Y may be constructed of a non-luminescent memory.
Address counter P is reset at step _n9 , and since the first step is shown, the first
Enter the contents of X in the step. Note that a press signal corresponding to each key is output from the key unit KU that presses the key, and this signal is encoded by the encoder EC1 and stored in the input buffer register n, so that it does not enter the register X again. Since X at this time has been reset at step _n12 , the first step of program memory Y becomes substantially irrelevant. Next, in step _n17 , adder AD1 is used to
+1" and causes the address counter P to count up by "1" (second step here). Note that when the content of the address counter P is "0", none of the steps in the program memory Y is accessed, and when P=1, the first step may be accessed. After executing "P+1" at step _n17 , the program advances to _n18 and inputs and stores the code corresponding to key □1 of input buffer register n in _XA . Then return to step _n1 . Then press the second numeric key □3 to go to step n ₃
→ Proceed to n ₁₄ , and since A has already been set at step n ₁₅ , proceed to n ₁₉ and input the contents of n (second numeric key) to X _B. Therefore, at this point, X _A
This means that the contents of the first numerical key are stored in , and the contents of the second numerical key are stored in X _B . In this way, A is reset at step _n20 and the process returns to step _n1 . As mentioned in Figure 5, there are actually 12 different heights within one octave, so
This is distinguished and stored in X _B. The second encoder EC2 is for this purpose, and even if the corresponding keys are pressed as shown in FIG. 4, the numbers 1 to 12 are stored in _XB as shown in FIG. 5. i.e. encoder
The contents of input buffer register n are converted by EC2 as shown in Table 1 below.

【table】

[Reading the program]

The operation after switching the changeover switch 11 to the program read mode R will be described below. The explanation will proceed with reference to FIG. By setting the read mode R, if the clear key CL is not pressed, n ₁ → n ₃ will change and virtually nothing will be done. The clear key CL is the play start key, press this key to proceed to step n ₃ →
Proceed with n ₄₁ . The reason why "1→P" is performed at _n41 is to return the address counter P to its initial state.
Steps _n42 and _n43 are steps for determining whether Y _B is "0" or "13", respectively.
As already mentioned, this is a step for distinguishing whether the output of the program memory Y at that time is related to pitch or length. In the case of pitch, since 1≦Y _B ≦12, the process proceeds as steps n ₄₂ → n ₄₃ → n ₄₄ . At _n44 , the contents of program memory Y are transferred to buffer register Z (having 4-bit areas each for Z _A and Z _B ). “P=
1”, so naturally the content of the second step is Z.
to go into. Then return to step n ₄₂ . In FIG. 10, V ₁ , . . . V ₁₂ are sound sources, which correspond to the respective scales in FIG. 5, and are sounds in semitone steps.
And it corresponds to the third octave (the highest frequency range). The gate circuit GV is
This is a circuit that switches which of V ₁ , ..., V ₁₂ is output. This switching signal is supplied from Z _B , decoded by decoder DC1, and the output of GV is switched using the output signal. VV is an octave switching circuit, and since each octave is twice the frequency, it is essentially a circuit that changes the frequency to 1/2 or 1/4. For example, the sound indicated by 06 in FIG. 4 is 440Hz, the sound indicated by 16 is 880Hz, and the sound indicated by 26 is 1.76kHz. Therefore, the output of V ₁₀ in Fig. 10 is set to 1.76kHz. If keys 1 and 6 are pressed, Z _A = 1, Z _B = 10, and Z _B
=10, the output of the gate circuit GV becomes _V10 . On the other hand, decoder DC2 outputs the switching signal of octave switching circuit VV according to the output of Z _A , and the relationship between Z _A and the output of DC2 is as follows: Z _A 0 The output of VV is VV 1/4 frequency of VV input 1 VV output is 1/2 frequency of VV input 2 VV output is the same frequency as VV input Therefore, when keys 1 and 6 are pressed, VV input is 1.76kHz and the output of VV is 0.88k which is 1/2 of that frequency.
Hz=880Hz. Also, when the 0 and 6 keys are pressed, the VV output is 1/4 of 1.76kHz, that is, 440Hz. As described above, the sound source is output from VV and reaches gate _GD . If flip-flop D is set, the output of VV is directly supplied to speaker SP via driver _Dr , producing the desired sound. Even if you perform "Y→Z" in step n ₄₄ , no sound is generated yet. Thereafter, in step _n45 , the address counter P is counted up, and the process returns to _n42 . The next step naturally indicates the length of the note, so Y _B =0 or Y _B =13. Y _B =0 is information that generates sound, and in this case, _RS is
Set flip-flop D and proceed to _n47 .
If Y _B =13 and it is a rest mark, the program proceeds directly to _n47 , so D remains reset. Proceed to step n ₄₆ → n ₄₇ and input the contents of Y _A to counter CO. . Then proceed to n ₄₈ . If this counter CO is 0, perform "CO-1" at step n ₄₉ and then proceed to step n _50.
Proceed to. Steps n ₅₀ , n ₅₁ , and n ₅₂ determine the unit time for CO counting. The initial value N is input to the counter CA at step n ₅₀ , and "CA=0" is determined at step n ₅₁ , and CA=0. "CA-" in step n ₅₂ until
1'' is repeated, and when CA=0, it returns to n ₄₈ . The value of counter CO is given by Y _A ,
It can be seen from the previous explanation that the value is proportional to the length of the sound. However, even if you simply repeat step n ₄₈ → n ₄₉ → n ₄₈ and repeat "CO-1" until CO = 0, CO = 0 in a short time because these series of processes are performed at a very fast speed. become. counter
The count in CA must be long enough to match the actual musical note, and the time for counter CA to count N times should be set to 〓 time. However, “〓＝
120", the standard length changes depending on the song, so if you want to take the past into account, you can set the initial value N to be put in this counter CA by changing it with a switch, etc. . In this way, when CO=0, step n ₅₃
Then, reset the RS flip-flop D. Therefore, since the flip-flop D has been set during the counting period up to this point, the desired sound is generated through the speaker SP. If Y _B = 13 then D
This is treated as a rest because it continues counting while being reset. At step _n54 , the address counter P is incremented and the process proceeds to _n55 . "Y _B = 15" is used to judge whether or not to end the song. If encode 15, return to step n ₁ , and if the song is still in the middle, return to step n 1.
Return to n ₄₂ . Since "P+1" has been made at _n54 , the output of program memory Y has moved to the next step. By repeating the above steps until encoding is completed, the desired programmed music is output from the speaker. This completes the explanation of the configuration of the electronic melody generator incorporated in the electronic music box of the present invention. According to the electronic music box according to the present invention described in detail above, an electronic melody is generated by opening the lid attached to the main body, and an electronic melody is generated by closing the lid to stop the electronic melody. In addition to being used as a music box, by operating the electronic melody start switch with the lid closed and the main body turned over,
It is effective because it can generate electronic melodies and can also be used for practicing karaoke instruments.

[Brief explanation of the drawing]

Fig. 1 is a perspective view, Fig. 2 A is a sectional view, Fig. 2 B is a switch circuit diagram, Fig. 3 is a perspective view, and Fig. 4 is a
Figure 5 is a diagram showing the correspondence between the pitch of a note and the numerical key to be operated. Figure 5 is a diagram showing the correspondence between the pitch of a note and the numerical code corresponding to the pitch of the note. Figure 6 is a musical score.
The figure is an explanatory diagram of key operations, FIGS. 8 and 9 are flowcharts, and FIG. 10 is a block diagram. Code, 1...Lid, 3...Bottom box, 5...Switch, 6...Electronic melody generator, 7...Speaker, 81, 82...Contact of switch 5, 9...Electronic melody generator main body, 10...Touch type key switch section, □0,...,□8...Numeric key, □#...Sharp key, 〓...Flat key, 〓〓,...,〓
〓...Tone length key, □...Tone length addition key, Y...Program memory, Z...Buffer register, DC
1, DC2...decoder, _V1 ,..., _V12 ...sound source,
GV...gate circuit, VV...octave switching circuit, D _r ...driver, SP...speaker, KU...
...Key unit, EC1, EC2, EC3...Encoder, n...Input buffer register, X...Register.

Claims (1)

[Scope of claim for utility model registration] A main body with a lid that can be opened and closed, multiple key switches for inputting sound information indicating pitch, length, etc., and an electronic melody start device for starting an electronic melody. a key input section including a switch; a sound information storage section that sequentially stores the sound information inputted by the key input section;
The main body includes a sound information deriving means for sequentially deriving the contents of the sound information storage section, and a sound generating section that sequentially converts the derived sound information into corresponding sounds and outputs the sound information, and the main body is provided with the lid. an electronic melody generator attached to the opposite side of the lid, a lid interlocking switch that turns on and off in conjunction with the opening and closing of the lid, the electronic melody start switch and the lid interlocking switch connected in parallel. The sound information deriving means is controlled based on the turning on of the electronic melody start switch or the turning on of the lid interlocking switch, and the sound information deriving means is controlled from the sound information storage section of the electronic melody generating device to the sound generating section. An electronic music box characterized by comprising: control means for starting derivation of sound information.