Electronic musical instrument ensemble system and electronic musical instrument playing guiding device

[0027] Example one

[0028] Such as figure 1 As shown, an electronic musical instrument ensemble system includes an electronic piano and an electronic drum. The electronic keyboard includes a main control circuit board, a memory, keys, an LED display, a power amplifier, a speaker, a man-machine interface, a sound source circuit board, and a USB interface. In terms of hardware structure, the electronic keyboard of this embodiment has an application number The LCD display in the Chinese utility model patent of 201120534543.3 is replaced with an LED display, and the emission principle of the electronic keyboard is the same as the prior art, that is, read the music file from the memory, and then play the accompaniment. Take out the piano sound from the board, and make the piano sound through the power amplifier and speaker. The man-machine interface is used to select tracks, set parameters, etc. The main control circuit board processes all signals, the memory can use SD card, and the man-machine interface can use touch Display screen. The difference between an electronic drum and an electronic piano is only that the keyboard is replaced with a drum plate, and the working principle is the same, so I won't repeat it here.

[0029] The difference between this embodiment and the prior art will be described in detail below.

[0030] The electronic keyboard and electronic drum are connected and communicated through a USB cable. The electronic keyboard is set as the master device and the electronic drum is set as the slave device.

[0031] The LED display screen of this embodiment is used to instruct the user to activate the corresponding sound sensing component (that is, the key or the drum pad). The LED display screen includes a plurality of LED light bars, each LED light bar is composed of a plurality of LED lamp beads arranged in sequence from top to bottom at equal intervals, and the LED display screen is connected to the corresponding electronic musical instrument (ie, electronic piano or electronic Drum) is electrically connected to the main control circuit board.

[0032] When in use, the electronic piano is used to read its stored MIDI file and pre-read the note events of the two designated tracks in the MIDI file. The designated two tracks can be piano tracks and drums. Track, according to the number of LED lamp beads and the spacing of the LED light bar and the preset preparation time (such as 2.2 seconds), combined with the corresponding track to control the LED display and the LED display of the electronic drum according to the lighting from top to bottom The lamp speed is such that the time from the uppermost LED lamp bead to the lowermost LED lamp bead on the LED light bar corresponding to the sound sensing component corresponding to the note event is equal to the preparation time, where The preparation time is a period of time before the sound track reaches the note event. For example, if the corresponding track of the electronic keyboard is a piano track, the time point of each note event on the piano track is pre-read, and then the time point is pushed forward by 2.2 seconds as the preparation time, combined with the corresponding note event The number and spacing of the LED lights of the LED light bar can calculate the start time of the top LED lamp bead, and then how often the next LED lamp bead is turned on, so that the bottom LED lamp bead is lit and the note time In the same way, the LED display of electronic drum lights up according to the data of the drum track, while other tracks (such as violin, guitar, etc.) are played as accompaniment. In this way, the electronic piano and electronic drums can play the same tune.

[0033] In addition, because MIDI files are not music files, they store instructions such as notes and control parameters. Therefore, the electronic keyboard does not necessarily select the piano track for performance, and the electronic drum does not necessarily select the drum track for performance, but can also be selected artificially. , The keyboard selects the drum track to play, then the tone generator circuit board calls the drum sound.

[0034] Example two

[0035] Such as figure 2 As shown, the difference between this embodiment and the first embodiment is that the electronic drum of the first embodiment is replaced with an electronic piano, that is, the master device of this embodiment is electronic keyboard A, and the slave device is electronic keyboard B. Its working principle is the same as that of the first embodiment. the same.

[0036] Example three

[0037] Such as image 3 As shown, an electronic musical instrument playing instruction device includes an electronic drum. The electronic drum includes a plurality of drum plates 5, a sound source circuit board 10, a main control circuit board 7, a power amplifier 8, a speaker 9, a memory 6, a man-machine interface 2 and a corresponding drum for instructing the user to activate (ie strike) The LED display of Disk 5. The drum plate 5, the sound source circuit board 10, the memory 6, the man-machine interface 2 and the LED display are all electrically connected to the main control circuit board 7, and the main control circuit board 7 is connected to the speaker 9 through the power amplifier 8.

[0038] The LED display screen includes a plurality of LED light bars 3, and each LED light bar 3 is correspondingly installed on the side edge of a drum plate 5. The angle between the LED light bar 3 and the percussion plane of the drum plate 5 may be 90°-175°, which is preferably 90° in this embodiment. The LED light bar 3 is composed of a plurality of LED lamp beads 4 arranged in sequence from top to bottom at equal intervals.

[0039] The man-machine operation interface 2 of this embodiment preferably adopts a touch display screen, and the memory 6 preferably adopts an SD card.

[0040] The sound source circuit board 10, the main control circuit board 7, the power amplifier 8, and the loudspeaker 9 are all installed in a housing 1, the memory 6 on one side of the housing 1, the drum plate 5, the man-machine interface 2 and the LED display All are installed above the housing 1.

[0041] The electronic drum is used to read the stored MIDI file, and pre-read the note event of a track specified in the MIDI file, according to the number of LED lamp beads of the LED light bar and its spacing and preset preparation time , Control its LED display to light up according to the speed from top to bottom, so that the uppermost LED light bead 4 of the LED light bar 3 corresponding to the sound sensing component (ie drum plate 5) corresponding to the note event will light up The lighting time of the lowest LED lamp 4 is equal to the preparation time, wherein the preparation time is a period of time before the sound track reaches the note event.