JPH0133838B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic musical instrument that is equipped with many tablets, drawbars, and many preset switches, and allows complex tone operations using these tablets and drawbars to be performed with a single touch during performance. It is.

Traditionally, electronic musical instruments have been used in which the tone can be set using a tablet, drawbar, or reset switch. The drawback is that it is difficult to correct. In other words, when setting the tone using only the tablet, it is inconvenient to not push in all the drawbars because the sound of the drawbars will also come out. Furthermore, if you want to switch from a tablet-based tone to a drawbar-based tone in the middle of a song, you must first turn off all the tablets that were turned on and then pull out each of the drawbars by a predetermined amount. It was extremely difficult to perform this series of operations quickly during the performance of a song.

The present invention provides an electronic musical instrument that solves these conventional problems.

An embodiment of the present invention will be described below with reference to the drawings. In the figure, 1 is a switch for selecting a tablet, 2 is a switch for selecting a drawbar, 3, 4, and 5 are preset switches for selecting accordion, piano, and saxophone tones, and 6 is a switch for each. A power supply is applied to one end of switches 1 to 5, 7 and 8 are flip-flops that memorize the states of switches 1 and 2, and 9 is a flip-flop that latches a predetermined one of switches 3, 4, and 5 with priority. A priority latch circuit that memorizes its state.
A reset circuit 10 sets flip-flops 7, 8 or priority latch circuit 9 corresponding to the operated switch by operating switches 1 to 5, and resets flip-flops 7, 8 or priority latch circuit 9 corresponding to the switch that is not operated. , 11 is a sound source, and 12 is a keyboard. 13 is a tablet; 14 is a tone filter whose frequency characteristics are varied by the tablet 13; 15 is a drawbar;
Reference numeral 16 denotes a drawbar circuit that changes the tone by varying the level of each foot row by the drawbar 15. The tone filter 14 constitutes one tone variable group, and the drawbar circuit 16 constitutes another tone variable group. There is. 17, 18, and 19 are fixed tone filters set to accordion, piano, and saxophone tones, respectively, and 20 is variable filter 1.
4, drawbar circuit 16, fixed filter 17-1
9 is an amplifier for amplifying the output, and 21 is a speaker.

Next, the operation will be explained. First, prior to playing, the tablet 13 and drawbars 15 are operated to set the variable tone filter 14 and drawbar circuit 16 to desired characteristics.

If you want to start playing in this state and select only the tone filter 14 set on the tablet 13, all you need to do is close the switch 1. That is, when switch 1 is closed, flip-flop 7 is set, and its output is used to control tone filter 14.
is in the operating state, while the flip-flop 8 and the priority latch circuit 9 are reset by the reset circuit 10, so the drawbar circuit 16 and the fixed filters 17 to 19 are in the inactive state, so that only the timbre filter 14 is set to the musical tone. Therefore, the sound source signal from the keyboard 12 becomes a predetermined tone through the tone filter 14 and is outputted through the amplifier 20 and the speaker 21. Even when selecting only the drawbar circuit 16 set by the drawbar 15, as long as the switch 2 is closed, the drawbar circuit 16 can be selected in the same way as in the case of a tablet.
can only be inserted into the musical tone signal path. Furthermore, if switches 1 and 2 are closed simultaneously, flip-flops 7 and 8 are both set, and priority latch circuit 9 is reset by reset circuit 10, so tone filter 14 and drawbar circuit 1 are reset.
6 can be inserted into the tone signal path. In any of the above cases, the output of the closed switch is applied to the reset circuit 10,
The output resets the flip-flop or priority latch circuit corresponding to the unclosed switch to prevent the timbre variable group or fixed timbre filter corresponding to the unclosed switch from being inserted into the tone signal path.

On the other hand, if any one of the switches 3, 4, and 5 is closed, the corresponding tone filters 17, 18, and 19 are activated by the output of the priority latch circuit 9, and the accordion and tone filters are respectively applied to the sound source signal.
You can add piano and saxophone sounds to the sound. Further, when two or more of the switches 3, 4, and 5 are closed at the same time, one tone filter given priority by the priority latch circuit 9 operates. In any of the above cases, the outputs of the switches 3, 4, and 5 are applied to the reset circuit 10, which resets the flip-flops 7 and 8 to disconnect the variable tone filter 14 and the drawbar circuit 16 from the musical tone signal path.

In summary, the flip-flops 7 and 8 or the priority latch circuit 9 corresponding to the operated switch among switches 1 to 5 are set, and the flip-flops 7 and 8 corresponding to the switch that is not operated are set.
Alternatively, the priority latch circuit 9 is reset. However, when switches 3 to 5 are operated redundantly, one predetermined switch operation is prioritized and latched by the priority latch circuit 9, and the others are not latched. Then, the timbre variable filter corresponding to the set flip-flop and the latched fixed timbre filter are inserted into the musical tone signal path.

In the embodiment, a case has been described in which two timbre variable groups and three fixed timbre filters are provided, but it goes without saying that three or four or more of each may be provided.

As described above, according to the present invention, it is possible to obtain the tone set in advance with the tablet or drawbars by simply closing the switch without having to reset the tablet or drawbar settings each time during a performance. can be significantly facilitated. Moreover, when a plurality of switches are closed, all of the plurality of corresponding timbre variable groups are inserted into the musical tone signal path, and a mixing effect can be produced. Moreover, when you select the variable timbre group (or fixed timbre filter), the fixed timbre filter (or variable timbre group) is automatically disconnected from the musical tone signal path, so after selecting the tablet group, You can quickly switch to a preset and then return to the tablet while playing, without having to open a closed switch each time. For this reason, switches 1 to 5 for selecting drawbars, tablets, and preset switches
If the tablet and drawbar are placed near the center in a place that is easy to operate, the operability will not be affected even if the tablet and drawbar are placed in places that are somewhat difficult to operate.

[Brief explanation of drawings]

The drawing is a block diagram showing one embodiment of the present invention. 1...Switch for tablet selection, 2...Switch for drawbar selection, 3, 4, 5...Switch for fixed tone filter selection, 6...Power supply,
7, 8...Flip-flop, 9...Priority latch circuit, 10...Reset circuit, 11...Sound source, 1
2... Keyboard, 13... Tablet, 15... Drawbar, 14, 16... Tone variable group, 17-19
... Fixed tone filter, 20 ... Amplifier, 21
...Speaker.

Claims (1)

[Scope of Claims] 1. A switch device that includes a plurality of timbre variable groups that change the timbre by operating a tablet or a drawbar, selects these timbre variable groups, and inserts them into a musical tone signal path, and a switch device that controls the state of each of the above switch devices. A storage device that retains the memory and a reset device that resets the memory retention state of the switch device are provided,
By operating the one or more arbitrarily selected switch devices, all of the selected timbre variable groups are inserted into the musical tone signal path, and the unselected timbre variable groups are removed from the musical tone signal path by the reset device. An electronic musical instrument characterized by its ability to be separated. 2. A plurality of timbre variable groups that change the timbre by operating a tablet or drawbar, a plurality of fixed timbre filters, a switch device that selects these and inserts them into the musical tone signal path, and stores and maintains the status of each of the above switch devices. A storage device and a reset device for resetting the memory retention state of the switch device are provided, and a plurality of selected timbre variable groups or a selected tone color variable group is An electronic musical instrument characterized in that all fixed timbre filters are inserted into a musical tone signal path, and unselected timbre variable groups or fixed timbre filters are separated from the musical tone signal path by the reset device.