JPH0314715Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electronic musical instrument to which an external storage device can be connected.

In recent years, it has become possible to load tone preset data or musical tone data for automatic performance stored in an external storage device such as a cassette tape recorder into internal memory, and automatically set the tone of the musical tone based on this read data. , or electronic musical instruments that perform automatically. By the way, in conventional electronic musical instruments of this type, no sound is generated when data is transferred from an external storage device, so it is impossible to confirm whether data is actually being transferred or not. When a plurality of data blocks are stored on one tape, there is a problem in that it is difficult to locate the beginning of each data block.
Particularly when an audio cassette is used as the external storage device, data transfer may take several minutes, and in such cases, it is very inconvenient if the status of data transfer cannot be confirmed.

Therefore, this invention provides an electronic musical instrument that can notify the operator of the data transfer status between the external storage device and the electronic musical instrument through sound, detects the data transfer, and indicates whether the data transfer is being performed. While the electronic musical instrument is in use, the musical tone generation means within the electronic musical instrument is used to generate continuous tones, and whether the data transfer is from the external storage device to the electronic musical instrument or from the electronic musical instrument to the external storage device. A sound generation control means is provided for changing the continuous sound depending on whether the continuous sound is present or not.

Hereinafter, embodiments of this invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an electronic musical instrument according to an embodiment of this invention. In this figure, numeral 1 is the CPU (central processing unit),
It is connected to each part of the device via a bus line 2. 3 is a ROM in which programs used in the CPU 1 are stored; 4 is a working RAM;
5 is a RAM for presetting tone data. This RAM 5 has storage areas _E1 to _EN , and can preset N types of tone color data. 6 is an operation panel, and N is stored in RAM5.
Tone selection switches [1] to [N] select one of the various tone data, a memory write switch W instructs to write the data of the cassette tape 7 to the RAM 5, and a memory write switch W which reads the tone data in the RAM 5. It consists of a memory read switch R for instructing the transfer to the cassette tape 7, and other operators such as a tone setting switch, an effect setting switch, etc. The key press detection circuit 8 detects the pressed key on the keyboard 9 and supplies the key code of the key to the CPU 1 via the bus line 2. A tone generator (hereinafter abbreviated as TG) 10 forms a musical tone signal based on the key code, tone data, effect data, etc. supplied from the CPU 1 via the bus line 2, and controls the amplifier 11 and volume volume 12. The signal is output to the speaker 13 via the signal. Reference numeral 15 is a cassette tape deck into which the cassette tape 7 is loaded, and is connected to the bus line 2 via a cassette tape interface 17. Also, code 30 is R/WC lead/
Light) is a sound generation control device that outputs a predetermined key code to the TG 10 according to instructions from the CPU 1.

Next, the processing steps of the CPU 1 in this embodiment will be explained with reference to the flowcharts shown in FIGS. 2 and 3. FIG. 2 is a flowchart of the main routine, and the CPU 1 repeatedly executes processing routines LU ₁ to _{LU 3} shown in this figure. That is, in the operation panel processing routine LU ₁ , the outputs of the respective operators on the operation panel 6 and the outputs of the timbre selection switches [1] to [N] are sequentially scanned. Next, tone selection switch [1] ~
If any [N] was operated, RAM 5 corresponding to the tone selection switch that was operated
Tone color data within areas E ₁ to _EN are sent to the TG 10. In addition, the tone selection switch [1] to [N]
If none of the controllers are operated, the tone data corresponding to the operation status of the controller is transferred from CPU1 to TG1.
sent to 0. Next, in the keyboard processing routine LU ₂ , the on/off status of each key is determined based on the output of the key press detection circuit 8, and the key code of the newly turned on key and the newly turned off key is turned on. It is sent to the TG 10 along with a mark indicating whether it is OFF or OFF. Next, in the cassette tape R/W processing routine LU ₃ , the cassette tape 7 and the RAM 5 are
Data transfer processing between the two is performed. This process will be explained below with reference to the flowchart shown in FIG.

In FIG. 3, step _S1 is a step for determining whether or not the memory write switch W of the operation panel 6 is turned on.If the result of this determination is "NO", the process advances to step _S2 . Step S ₂
Then, it is determined whether the memory read switch R is turned on. If the result of this judgment is "NO", the process returns to operation panel processing routine LU ₁ of the main routine. That is, if both the memory read switch R and the write switch W are not operated, no processing is performed in the processing routine _LU3 .

Next, the judgment result in step _S1 is “YES”.
If so, proceed to step _S3 . In step _S3 , data write start processing is performed. That is,
The cassette tape 7 is driven, and processing such as initial address setting of the RAM 5 is performed. Next, in step _S4 , it is determined whether or not a data transfer start signal has been output from the cassette tape deck 15. If the result of this judgment becomes "YES", the process advances to step _S5 , and "1,0" is outputted to the R/W sound generation control device 30 as the light mark WM. R/W sound generation control device 3
0 receives this light mark WM “1, 0” and inputs the internal preset key code K ₁ to TG10.
Output to. As a result, a musical tone signal corresponding to key code _K1 is formed and output in TG10,
A sound with a pitch corresponding to the key code _K1 is generated from the speaker 13. Next, when the process advances to step _S6 , the data output from the cassette tape interface 17 is written into the RAM 5. Next, when the process advances to step _S7 , it is determined whether or not there is an error in the data written to the RAM 5. That is, for example, a parity check is performed. If the judgment result is “NO” (no error), the step
Proceeding to _S8 , it is determined whether the data transfer has been completed. If the result of this judgment is "NO", steps S ₆ , S ₇ and S ₈ are repeated again. On the other hand, if the judgment result in step _S8 is "YES",
Proceeding to step _S9 , "0,0" is output to the R/W sound generation control device 30 as the write mark WM. Then, the processing of the CPU 1 returns to the main routine. When the light mark WM "0,0" is output to the R/W sound generation control device 30, the device 30 stops outputting the key code _K1 . This results in
The sound generated from the speaker 13 stops. On the other hand, if the determination result in step _S7 is "YES" (an error has occurred), the process proceeds to step _S11 , where an error sound is generated, for example, by a buzzer or the like. Note that the error lamp may be blinked. Then, proceed to step _S9 .

Next, the judgment result in step _S1 is “NO”.
If the determination result in step _S2 is "YES", the process advances to step _S15 , where data read start processing is performed. That is, the cassette tape 7 is driven, and processing such as setting the initial address of the RAM 5 is performed. Next, when the process advances to step _S14 , "1,1" is outputted to the R/W sound generation control device 30 as the lead mark RM. R/W
The sound generation control device 30 uses this lead mark RM“1,
1" and outputs the internally preset key code K ₂ (K ₂ ≠ K ₁ ) to the TG 10. As a result, the TG 10 forms and outputs a musical tone signal corresponding to the key code K ₂ , and outputs it to the speaker. A sound with a pitch corresponding to the key code _K2 is generated from 13. Next, when the process advances to step _S15 , the data in the RAM 5 is read out and supplied to the cassette tape interface 17.The cassette tape interface 17
converts the supplied data into serial data and sequentially sends it to the cassette tape deck 15.
Next, in step _S16 , it is determined whether all the data in the RAM 5 has been transferred to the cassette tape 7. If the result of this judgment is "NO", steps _S15 and _S16 are repeated again. On the other hand, if the judgment result in step _S16 is "YES",
Proceeding to step _S17 , end processing such as sending out an end mark is performed. Next, proceed to step _S18 .
“0,0” is output to the R/W sound generation control device 30 as the lead mark RM. This causes the speaker 13 to stop producing sound. Then, the processing of CPU1 returns to the main routine.

In addition, in this embodiment described above, R/W
Although the sound generation control device 30 is provided, this device 30 is not provided, and instead the key code is sent from the CPU 1 to TG1.
It is also possible to send the signal to 0 and generate the sound. Further, in this embodiment described above, sounds of the same pitch are emitted, but for example, a plurality of key codes constituting a simple melody may be stored in advance in the R/W sound generation control device 30, and the keys The chords may be sequentially output to the TG 10 to generate melody sounds. In this case, it is more preferable to use different melodies when reading data and when writing data.

As explained above, according to this invention, data transfer is detected, and while the data transfer is being performed, the musical tone generating means in the electronic musical instrument is used to generate continuous tones, and the data transfer is being performed. Since we have provided a sound generation control means that changes the continuous tones depending on whether the direction is from the external storage device to the electronic musical instrument or from the electronic musical instrument to the external storage device, the operator can This provides the advantage of being able to determine the state of data transfer between the instrument and the musical instrument based on the sound.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of this invention, FIG. 2 is a flowchart showing the main routine of processing by CPU 1 in this embodiment, and FIG.
This figure is a flowchart showing details of the cassette tape R/W processing routine _LU3 in FIG. 1...CPU (instruction means), 3...ROM, 5...
RAM (storage means), 7...cassette tape, 10
...Tone generator, 13 ...Speaker, 1
5...Cassette tape deck (external storage device),
30...R/W sound generation control device.

Claims (1)

[Scope of utility model registration request] Data from external storage devices is transferred and
An electronic musical instrument comprising a storage means for transferring internally stored data to the external storage device, and a musical sound generation means for generating a musical sound based on the data stored in the storage means, wherein the external storage device instruction means for selectively instructing a first data transfer from the device to the storage device or a second data transfer from the storage device to the external storage device;
causing the musical tone generation means to start generating a predetermined musical tone in response to an instruction for the first data transfer or the second data transfer by the instruction means; Control is performed to stop the generation of the predetermined musical tone in response to the completion of data transfer, and control is performed depending on whether the data transfer is the first data transfer or the second data transfer. An electronic musical instrument comprising: sound generation control means for controlling the predetermined musical tones to be different.