JP4198645B2 - Electronic percussion instrument for karaoke equipment - Google Patents

Description

  The present invention relates to an electronic percussion instrument device used by being connected to a karaoke device, and more particularly to an automatic performance control technique.

  Small percussion instruments that can be played easily, such as tambourine, maracas, castanets, bongo, etc., are prepared at shops with karaoke equipment, and it is widely practiced to play these along with karaoke accompaniment music. It has been broken. In accordance with such use, the present inventors have recently developed an electronic percussion instrument device that is used by being connected to a MIDI communication karaoke device.

The basic functions of this electronic percussion instrument device are the same as general ones. A percussion detection means for detecting a percussion operation by a player, and a sound for generating an appropriate percussion instrument acoustic signal in response to a percussion signal from the percussion detection means Signal generating means. The percussion detection means has a plurality of percussion pads associated with different percussion instrument sounds of the acoustic signal generation means, and generates percussion instrument sounds such as tambourine, maracas, castanets, bongo and drum sets.

  A rhythm signal (which is one of the MIDI data) of the karaoke accompaniment music being played is output from the MIDI karaoke apparatus. This rhythm signal is introduced into an electronic percussion instrument device, and is configured to automatically perform percussion instrument sounds such as tambourine, maracas, castanets, bongo and drum sets in synchronization with the rhythm signal. As a result, even a person with a rhythmic sensation feels like playing a percussion instrument that exactly matches karaoke accompaniment music.

  However, even with accompaniment music with the same rhythm, the tone of the song is completely different when it is rock and when it is enka. Moreover, even if it is the same music, according to the structure, a music tone changes with time greatly. In the automatic performance of the previously developed electronic percussion instrument device, although it can be synchronized with the rhythm of the accompaniment music, the performance pattern must be selected by the performer. For this reason, a person who has never played a percussion instrument can not cope with the change in the tune, and for example, it makes a loud percussion instrument sound with a phrase that should be sung softly. This can make the singer and listener uncomfortable and even ruin the atmosphere.

  An object of the present invention is an electronic percussion instrument device for a karaoke apparatus which is configured to be able to perform automatically according to a change in the tone of a music, and can be enjoyed greatly even by a user who is not familiar with music. Is to provide.

In order to achieve this object, the present invention provides an impact detection means for detecting an impact operation by a player, and an acoustic signal generation means for generating an appropriate percussion instrument acoustic signal in response to an impact signal from the impact detection means. A rhythm receiving means for receiving a rhythm signal for music performed by a karaoke apparatus, and identifying a rhythm type by analyzing the syllable structure from the transition of the rhythm signal received by this means A rhythm type analyzing means, a performance division data receiving means for sequentially receiving performance division data such as attribute divisions and musical tone divisions for the music played by the karaoke device, and each rhythm type and each performance division data. and the play pattern storage means for storing the performance pattern data of association with metrical rhythm, and manual performance mode based on the operation input by the user And mode switching means for switching and dynamic performance mode at any time, the following performance pattern data corresponding to the performance classification data in the automatic performance mode has been received by the rhythm type and the performance classification data receiving means which is identified by the rhythm type analysis unit An electronic percussion instrument device for a karaoke apparatus provided with automatic performance control means for outputting a percussion instrument acoustic signal of a rhythmic rhythm by driving an acoustic signal generating means.

  Further preferably, the hit detection means includes a plurality of hit pads associated with different percussion instrument sounds of the acoustic signal generating means, and an operation input for commanding execution of the automatic performance and a continuous press operation of the hit pad; The automatic performance is performed with the percussion instrument sound assigned to the hitting pad.

  Since the electronic percussion instrument device for a karaoke apparatus of the present invention is configured so that automatic performance can be performed with a performance pattern corresponding to the rhythm type and performance classification of the music played by the karaoke apparatus, for example, the volume during a chorus (singing) section It is possible to perform automatically with appropriate rhythms and tunes, such as lowering the sound so that it does not interfere with the singer, or increasing the volume in a rising section such as rust and climax is there. This allows users who are not familiar with music to participate in karaoke without compromising the atmosphere.

  In addition, it has a plurality of striking pads associated with different percussion instrument sounds, and the striking sound assigned to that striking pad is output by striking one of the striking pads. Percussion instrument performance is possible. In addition, automatic performance is started with the percussion instrument sound assigned to the striking pad simply by performing an operation input that commands execution of automatic performance while continuously pressing one of the striking pads. Switching to performance can be performed smoothly. As a result, it is possible to perform a rhythmic performance with a variety of music and surrounding atmosphere.

=== Basic configuration and basic operation ===
An external view of an electronic percussion instrument for a karaoke apparatus according to an embodiment of the present invention is shown in FIG. 1, and a block diagram thereof is shown in FIG. The apparatus 1 is configured to execute various processes under the control of a microcomputer including a CPU 11, a ROM 12, and a RAM 13. The CPU 11 controls the operation of the entire apparatus 1. The ROM 12 stores various programs executed by the CPU 11 and various data related to performance. The RAM 13 temporarily stores various data generated when the CPU 11 executes the program. These microcomputer components are connected to each other via a data bus 14.

  A hit detection unit 15 is connected to the CPU 11 via a data bus 14, and a hit pad group 16 including four hit pads 16a to 16d is connected to the hit detection unit 15. Similarly, when the player selects an appropriate mode using the mode selection button 17a of the user interface unit 17 connected to the bus 14, the hit detection unit 15 enters a state of waiting for an input of a hit operation by the player (manual performance mode). Become. In this state, for example, when the performer performs a batting operation on the batting pad 16a, the batting detection unit 15 generates a batting signal corresponding to the batting pad 16a.

  When the CPU 11 detects the hit signal via the data bus 14, the CPU 11 reads predetermined performance data corresponding to the hit pad 16a from the ROM 12, and drives the acoustic signal generator 18 according to the read performance data. As a result, an acoustic signal of the percussion instrument assigned to the striking pad 16a is generated. This acoustic signal is sent to the mixing amplifier of the karaoke apparatus 2 and is acoustically output. The performer can freely adjust the volume of the hitting sound by the volume adjustment button 17b of the user interface unit 17. Further, the beat mark display unit 17c of the user interface unit 17 is configured to shine in accordance with the player's hitting operation. The above is manual performance.

=== Identification of rhythm type ===
The electronic percussion instrument device 1 can perform automatically according to the rhythm signal output from the MIDI communication karaoke device 2. For this purpose, the electronic percussion instrument apparatus 1 includes a rhythm signal receiving unit 19 for receiving the rhythm signal, and the rhythm signal receiving unit 19 is connected to the CPU 11 via the data bus 14. Processing performed by the CPU 11 for this automatic performance will be described with reference to the flowchart shown in FIG.

  First, the CPU 11 checks whether or not a rhythm signal is input in the rhythm signal receiver 19 (31). The karaoke apparatus 2 plays the karaoke accompaniment music converted into MIDI data, and outputs a meta event signal appropriately assigned to the MIDI music piece data as the rhythm signal.

  If this rhythm signal is input, the CPU 11 converts the rhythm signal into time series data (32). Specifically, combinations such as “strong”, “medium strength”, and “weak” included in this rhythm signal are recorded in the RAM 13 in the order in which they are detected, together with their detection times. The discrimination of strength is performed, for example, by monitoring a change with time of the rhythm signal.

  Next, a syllable structure is extracted from the time-series data recorded in the RAM 13 (33). Specifically, the syllable structure is specified by extracting the minimum unit of repetition based on the sequence of “strong”, “medium strength”, “weak”, and the transition of the detection time interval Δt (tempo). In the syllable structure, a temporal flow is divided by periodic repetition of accents, and its minimum unit is one measure.

  Next, a rhythm type is identified from this syllable structure (34). Specifically, the CPU 11 executes a predetermined program and selects one rhythm type closest to the target rhythm structure from a plurality of rhythm types prepared in the ROM 12. This rhythm type uniquely defines the rhythmic rhythm. A plurality of rhythm types are prepared for each music genre such as “enka”, “rock”, and “rap”. Furthermore, a plurality of the same enka are prepared for each tempo division, such as “tempo 50 or less”, “tempo 51-100”, “tempo 101-150”, and the like.

=== Reception of performance division data ===
Next, it is checked whether or not performance division data is inputted in the performance division data receiving unit 110 (35). The performance division data is attached to the MIDI music data stored in the karaoke apparatus 2 in advance, and is associated with the timing definition data starting from the performance start, and “prelude”, “chorus”, “interlude”. "Category data that divides the music into different tunes, such as" Normal "," Rabi "," Climax ", etc. It consists of and.

  If this performance division data has been input, the CPU 11 records the attribute division and the musical tone division of the currently playing music separately from the performance division data in the RAM 13 (36). At this time, if the attribute classification is not included, it is recorded as “Chorus”, and if the music tone classification data is not included, it is recorded as “Normal”. Note that the CPU 11 repeatedly executes the processes 32 to 36 even before the performer inputs an operation instruction for executing the automatic performance. Thus, the latest rhythm type / tempo and attribute / musical tone classification are always stored in the RAM 13.

=== Execution of automatic performance ===
When the performer inputs an operation instruction for an automatic performance, the CPU 11 corresponds to the rhythm type identified in step 34 from the plurality of performance pattern data stored in the ROM 12 and in step 36. The performance pattern data corresponding to the acquired attribute / musical tone classification is read in synchronism with the rhythm signal (37).

  For example, if the rhythm type recorded in the RAM 13 at this time is “Enka 2”, a plurality of performance division IDs as shown in FIG. 4 are candidates. When the attribute classification and tune classification recorded in the RAM 13 are “follower” and “climax”, respectively, the performance category ID “after-ku” is read from FIG. 4 and shown in FIG. From such a plurality of performance pattern data, standby is performed so that four performance pattern data (corresponding to the four striking pads 16a to 16d) corresponding to “rear-ku” can be read at any time. Here, for example, when the performer performs a batting operation on the striking pad 16c, the performance pattern data of “(Enka 2) after-ku-c” is read from the ROM 12 in synchronization with the rhythm signal. If no rhythm signal is input at this time, the performance pattern data is read out at the tempo of the immediately preceding rhythm signal recorded in the RAM 13.

  At the same time, the CPU 11 drives the acoustic signal generator 18 according to the read performance pattern data to generate an appropriate percussion instrument acoustic signal. This acoustic signal is sent to the mixing amplifier of the karaoke apparatus 2 and is acoustically output. For example, when the read performance pattern data is the above-mentioned “(Enka 2) After-ku-c”, it is a rhythmic rhythm specified by “Enka 2” and a melody (fade out) suitable for the “climax of the later performance”. The processing of “Cowbell” is started.

In the “chorus” performance section, control or setting is performed so that the volume of the percussion instrument sound is reduced so that the percussion instrument sound is too loud and does not interfere with the singing. Similarly to the manual performance described above, the volume adjustment button 17b allows the volume of the percussion instrument sound to be freely adjusted, and the beat mark display section 17c shines in time with the automatic performance tempo.

=== Switching the performance mode ===
In this embodiment, switching from manual performance to automatic performance and from automatic performance to manual performance can be performed very easily. That is, by continuously pressing the break pad 17d in the user interface unit 17 and any one of the four hit pads 16a to 16d at the same time, automatic performance is performed with the percussion instrument sound assigned to the hit pad. Is started (automatic performance mode). When the continuous pressing operation of the break pad 17d or the hitting pad is stopped, the automatic performance is finished and the manual performance mode is set. As a result, continuous switching such as manual->auto->manual-> automatic can be performed smoothly, so that it is possible to perform a sharp rhythm performance that matches various musical pieces and the surrounding atmosphere.

=== Continuous processing of automatic performance ===
The electronic percussion instrument 1 automatically performs an automatic performance even if the rhythm signal being received by the rhythm signal receiving unit 19 or the performance category data being received by the performance category data receiving unit 110 is interrupted during automatic performance. can do. Specifically, as shown in the flowchart of FIG. 3, when it is determined in step 31 that no rhythm signal is input, the processes of 32 to 34 are omitted and the process proceeds to the next process. If it is determined in step 35 that the performance division data has not been input, the process of 36 is omitted and the process proceeds to 37. By repeating this, information immediately before the signal (data) stops is recorded in the RAM 13, and the automatic performance is continued based on the information immediately before that.

Even if the automatic performance is not performed, if there is an operation input of an automatic performance execution command within a certain time after the rhythm signal or performance division data is interrupted, the automatic performance is performed in the same procedure as described above. Be started. As a result, for example, when someone finishes singing in karaoke, an automatic performance can be started even in a situation where the listener screams and the atmosphere is maintained, and the reverberation can be enjoyed.

=== Others ===
When the rhythm signal is composed of timing definition data starting from the start of performance and identification data of “only strong and weak beats”, the rhythm type and tempo can be identified with the following simple configuration. . That is, when a strong beat signal is received, the time Δt from when the timer is started until the next signal is received is counted. If the received signal is a weak beat signal, the time measurement result Δt is recorded in the first frame. To do. Furthermore, if the clock is kept and the next signal is a weak night signal, its Δt is recorded in the second frame. This is repeated until a strong beat signal is received. When a strong beat signal is received, Δt is recorded in a predetermined frame, then 0 (return mark) is recorded in the next frame, and the time of Δt in the first frame is counted. If this is repeated, when the rhythm signal is interrupted, the record immediately before that remains. The automatic performance is executed at a tempo based on Δt recorded in the frame.

BRIEF DESCRIPTION OF THE DRAWINGS It is an external view of the electronic percussion instrument apparatus for karaoke apparatuses of one Example by this invention. It is a block diagram of an electronic percussion instrument apparatus same as the above. It is a flowchart regarding the automatic performance of an electronic percussion instrument apparatus same as the above. It is a figure for demonstrating the performance division ID for every rhythm type | mold regarding one Example by this invention. It is a figure for demonstrating the relationship between performance division ID and performance pattern data regarding one Example by this invention.

Explanation of symbols

1 Electronic percussion instrument 11 CPU
12 ROM
13 RAM
DESCRIPTION OF SYMBOLS 18 Acoustic signal generation part 19 Rhythm signal receiving part 110 Performance division data receiving part 2 Karaoke apparatus

Claims (1)

An electronic percussion instrument device comprising a hit detection means for detecting a hit operation by a player and an acoustic signal generating means for generating an appropriate percussion instrument acoustic signal in response to a hit signal from the hit detection means,
A rhythm receiving means for receiving a rhythm signal for the music played by the karaoke device;
Rhythm type analysis means for identifying the rhythm type by analyzing the rhythm structure from the transition of the rhythm signal received by this means,
Performance division data receiving means for sequentially receiving performance division data such as attribute division and tone division for the music played by the karaoke device;
Performance pattern storage means for storing performance pattern data of rhythmic rhythms in association with each of the rhythm types and the performance category data,
Mode switching means for switching between manual performance mode and automatic performance mode at any time based on user's operation input;
By driving the acoustic signal generating means in accordance with performance pattern data corresponding to the rhythm type identified by the rhythm type analyzing means and the performance category data received by the performance category data receiving means in an automatic performance mode, An electronic percussion instrument for a karaoke apparatus, comprising: an automatic performance control means for outputting an acoustic signal of the percussion instrument.

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