JP3855356B2 - Pitch bend data display device and input device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pitch bend data display device and an input device which can display pitch bend data used in an electronic musical instrument or the like in an easy-to-understand manner for an operator and easily input the value.
[0002]
[Prior art]
Conventionally, in a sequencer such as an automatic performance apparatus that automatically generates musical sounds, a value based on 14-bit data is used as pitch bend data, for example, a value from “−8192” to “8191”. It was displayed as it was or entered with that value.
[0003]
[Problems to be solved by the invention]
However, even if the value of the pitch bend data is displayed as it is or is directly input, it is difficult to understand how much the actual pitch change will change. That is, how much the maximum or minimum value of the pitch bend is applied to the actual pitch change depends on the pitch bend range set on the sound source side. Therefore, even if the value of pitch bend data is the same, the rate of the pitch change is different, and the only way to calculate the pitch change manually by the user based on the settings on the sound source side is that it is inconvenient. there were.
The present invention has been made in view of the above points, and a pitch bend data display device capable of displaying and inputting pitch bend data with musically understandable values such as a cent value and a semitone number, and the like. An object is to provide an input device.
[0004]
[Means for Solving the Problems]
A pitch bend data display device according to a first aspect of the present invention transmits a pitch bend range data request command to an external sound source device connected via communication means, and the sound source device according to the transmitted pitch bend range data request command A means for receiving pitch bend range data sent back from the input means, an input means for inputting pitch bend data that takes a value within a specific range, and a value of the input pitch bend data based on the received pitch bend range data. It comprises conversion means for converting into a value representing the pitch change amount such as the number of semitones, and display means for displaying the value converted by the conversion means numerically or graphically.
When the maximum value of the pitch bend data is 8191, for example, if a value of 300 is assigned to the maximum value, the pitch bend range becomes the cent value assigned to the maximum value. The same applies when a value of 3 is assigned as the number of semitones. When such a pitch bend range is uniquely set on the external sound source device connected via the communication means, the pitch bend data display device can determine what range the pitch bend range is set on. Absent. Therefore, in the present invention, a pitch bend range data request command is transmitted to an external tone generator connected via a communication means, and pitch bend range data sent back from the tone generator in response to the transmitted pitch bend range data request command To receive. Thus, conversion means, the value of the pitch bend data based on the pitch bend range data this received, in accordance with the pitch bend range is set by an external tone generator, it can be converted to a value, such as a cent value or number of semitones . For example , if the pitch bend data value is 5461, the cent value is 200. The display means directly displays the value converted by the conversion means as a cent value or semitone number as a numerical value, or performs graphic display such as a curve.
A pitch bend data input device according to a second aspect of the present invention transmits a pitch bend range data request command to an external sound source device connected via communication means, and the sound source device according to the transmitted pitch bend range data request command Means for receiving pitch bend range data sent back from the input means, input means for inputting a value representing a pitch change amount such as a cent value or a semitone using a numerical value or a graphical interface, and a value representing the input pitch change amount Is converted to a pitch bend data value that takes a value in a specific range based on the set pitch bend range data .
Also in this case, a pitch bend range data request command is transmitted to an external tone generator connected via the communication means, and pitch bend range data sent back from the tone generator in response to the transmitted pitch bend range data request command is received. By doing so, the pitch bend range set in the external sound source device can be known. Thus, conversion means, a pitch variation amount inputted by the input means on the basis of the pitch bend range data received said, can be converted into pitch bend data values to match the pitch bend range is set by an external tone generator . Tone generator performs pitch bend processing based on the converted pitch bend data values.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 2 is a block diagram showing the overall configuration of an automatic performance apparatus having a pitch bend data display device and an input device according to the present invention.
The CPU 21 controls the entire operation based on various programs and various data in the ROM 22 and RAM 23 and musical tone control information (MIDI data) fetched from an external storage device. In this embodiment, a floppy disk drive 24, a hard disk drive 25, a CD-ROM drive 26, and the like will be described as examples of external storage devices. However, various other forms such as an MO drive, a PD drive, and a DVD drive may be used. It may be a device for using media. In addition, various information such as musical tone control information may be taken in from the server computer 29 on the communication network 28 via the communication interface 27, or MIDI data etc. may be taken in from another MIDI device 2B via the MIDI interface 2A. But you can.
The CPU 21 supplies the MIDI data generated from such an external storage device and the MIDI data generated based on the key pressing operation of the keyboard 2C to the tone generator circuit 2J. Note that sound generation processing may be performed using a sound source circuit connected to the outside. The ROM 22 stores various programs (system programs, operation programs, etc.) and various data of the CPU 21, and is composed of a read-only memory (ROM).
The RAM 23 temporarily stores various data (automatic performance data and the like) generated when the CPU 21 executes a program. A predetermined address area of a random access memory (RAM) is assigned to each of the RAM 23, a buffer, and a flag. Used as a table.
Further, the operation program may be stored in an external storage device such as the hard disk device 25. Further, these operation programs are stored in an external storage device such as the hard disk device 25 without storing the operation programs in the ROM 22, and the operation programs are stored in the ROM 22 by reading them into the RAM 23. You may make CPU21 perform this operation | movement. By doing so, the operation program can be easily added or upgraded. A CD-ROM or floppy disk may be used as one of the removable external storage media. The CD-ROM or floppy disk may store various data such as the above-described automatic performance data, chord progression data, musical tone waveform data, video data, and arbitrary operation programs. The operation program and various data stored in the CD-ROM and the floppy disk can be read out by the CD-ROM drive 26 and the floppy disk drive 24 and transferred and stored in the hard disk device 25. Thereby, new installation and version upgrade of the operation program can be easily performed.
[0006]
The communication interface 27 is connected to the data and address bus 2M, and can be connected to various communication networks 28 such as a LAN (local area network) and the Internet via the communication interface 27. Data may be exchanged between them. As a result, when the operation program and various data are not stored in the hard disk device 25, the operation program and various data can be downloaded from the server computer 29. In this case, an automatic performance device, which is a musical tone generation device serving as a client, transmits a command requesting download of an operation program and various data to the server computer 29 via the communication interface 27 and the communication network 28. In response to this command, the server computer 29 transmits a predetermined operation program and data to the automatic performance device via the communication network 28. The automatic performance device receives these operation programs and data via the communication interface 27 and accumulates these programs and data in the hard disk device 25. This completes the download of the operation program and various data.
[0007]
The automatic performance data is stored in the ROM 22, hard disk, CD-ROM, floppy disk or the like. When stored in a hard disk, CD-ROM, floppy disk or the like, automatic performance reproduction processing is performed after the automatic performance data is read into the RAM 23.
The format of the automatic performance data is an event-relative time method in which the time of occurrence of a performance event is represented by the time from the previous event, and an event-absolute time in which the time of occurrence of the performance event is represented by an absolute time in a song or measure. System, notes pitch and note length or rest and rest length (rest)-note length method, memory area is secured for each minimum performance resolution, corresponding to the time when a performance event occurs It may be of any type such as a solid system in which performance events are stored in a memory area.
The method for changing the tempo of automatic performance is to change the tempo clock period, to modify the timing data value without changing the tempo clock period, or to change the timing data value in one process. It may be anything such as a change.
The automatic performance data may be in a format in which data of a plurality of channels are mixed, or may be in a format in which data of each channel is divided for each track.
[0008]
The keyboard 2C is provided with a plurality of keys for selecting the pitch of a musical tone to be generated, has a key switch corresponding to each key, and, if necessary, a touch detection means such as a pressing force detection device. have. The keyboard 2C is a basic operator for music performance, and it goes without saying that other performance operators may be used.
The key press detection circuit 2D includes a key switch circuit provided corresponding to each key of the keyboard 2C for designating the pitch of a musical tone to be generated. The key press detection circuit 2D detects a change from the key release state to the key press state of the keyboard 2C, outputs a key-on event, detects a change from the key press state to the key release state, and outputs a key-off event. A note number indicating the pitch of the key for each key-on event and key-off event is output. In addition to this, the key depression detection circuit 2D discriminates the key depression operation speed and the pressure when the key is depressed, and outputs velocity data and aftertouch data.
The switch detection circuit 2F is provided corresponding to each operator group on the panel switch 2E having a numeric keypad, a character keyboard, and other various switches, and a switch-on event corresponding to the operation status of each operator group. Is output.
As the operator group, for example, a pitch bend range setting operator, a pitch change amount input operator, a pitch bend data input operator, and the like are provided. In addition to these, there are various operators for selecting, setting and controlling the tone color, volume, pitch, effect, etc. of the musical sound to be generated. There are many other operators, but they are omitted here. The pitch bend range setting operator sets a pitch bend range by assigning a pitch change amount to a maximum value (for example, 8191) of pitch bend data as a cent value. The pitch change amount input operator inputs pitch bend data as a cent value. The pitch bend data input operator inputs pitch bend data as it is.
The display circuit 2H controls the display content of the display 2G, and displays the pitch bend data as it is, displays the pitch bend data as a cent value, or displays both on the display 2G in parallel. The display contents are as shown in FIGS.
[0009]
The tone generator circuit 2J can generate tone signals simultaneously on a plurality of channels, and inputs tone control information (MIDI data such as note-on, note-off, velocity, pitch, tone number, etc.) given from the CPU 21. A musical tone signal based on the data is generated.
In the tone generator circuit 2J, a musical sound signal can be generated simultaneously in a plurality of channels by using one circuit in a time-sharing manner to form a plurality of sound generation channels, or one sound generation channel is configured by one circuit. It may be of the form Further, any tone signal generation method in the tone generator circuit 2J may be used. For example, a memory readout method (waveform memory method) for sequentially reading musical sound waveform sample value data stored in the waveform memory in accordance with address data that changes in response to the pitch of the musical sound to be generated, or the address data as a phase angle parameter FM method for obtaining musical tone waveform sample value data by executing predetermined frequency modulation calculation as data, or AM method for obtaining musical tone waveform sample value data by executing predetermined amplitude modulation calculation using the address data as phase angle parameter data, etc. These known methods may be adopted as appropriate. In addition to these methods, a physical model method that synthesizes a musical sound waveform using an algorithm that mimics the sound generation principle of a natural instrument, a harmonic synthesis method that synthesizes a musical sound waveform by adding multiple harmonics to the fundamental wave, A formant synthesis method that synthesizes a musical sound waveform using a formant waveform having a specific spectral distribution, an analog synthesizer method using VCO, VCF, and VCA may be employed. In addition, the sound source circuit is not limited to the one that uses the dedicated hardware, and the sound source circuit may be configured using a DSP and a microprogram, or the sound source circuit may be configured using a CPU and software program. It may be.
The timer 2N generates tempo clock pulses for counting time intervals and setting the tempo for automatic accompaniment. The frequency of the tempo clock pulse is adjusted by a tempo switch (not shown) in the various switches 2E. The tempo clock pulse from the timer is given as an interrupt command to the CPU 21, and the CPU 21 executes various processes during automatic performance by interrupt processing.
The effect circuit 2K gives various effects to the tone signal from the tone generator circuit 2J, and outputs the tone signal to which the effect is given to the sound system 2L. The musical sound signal to which the effect is given by the effect circuit 2K is generated through the sound system 2L including an amplifier and a speaker.
[0010]
Next, an example of the operation of the automatic performance device provided with the pitch bend data display device and the input device of the present invention will be described.
FIG. 4 is a diagram illustrating an example of the pitch bend range setting process performed in response to the operation of the pitch bend range setting operator. This pitch bend range setting process is performed when the pitch bend range setting operator is operated. That is, the numerical value input by the operation of the numeric keypad after the operation of the pitch bend range setting operator is used as the pitch change amount with respect to the maximum value of the pitch bend data, that is, the pitch bend range. At this time, the operator inputs a pitch change amount represented by a cent value. For example, if the maximum value of the pitch bend data is designated as “300” or “200” as the cent value, the designated cent value is stored in the pitch bend range register RANGE as the maximum pitch change amount. .
[0011]
FIG. 5A is a diagram showing an example of processing performed in response to the operation of the pitch change amount input operator. In this pitch change input process, the pitch change (for example, cent value) input by the pitch change input operator is converted into pitch bend data based on the stored value of the pitch bend range register RANGE. The pitch bend data is written into the memory, and the input pitch change (cent value) and the converted pitch bend data value are displayed.
FIG. 5B is a diagram showing an example of processing performed in response to the operation of the pitch bend data input operator. This pitch bend data input process converts pitch bend data input by the pitch bend data input operator into a pitch change amount (cent value), writes it into the memory, and inputs the value of the pitch bend data and the pitch change amount ( Cent value) is displayed.
[0012]
FIG. 6 is a diagram showing a display example of a conventional pitch bend data display device. As is clear from the figure, conventionally, since the state of the pitch change is simply displayed graphically as a change curve of the pitch bend data, it is not clear how much the pitch change amount is. FIG. 1 is a diagram showing an example of a display screen according to the pitch bend data display device of the present invention. In this case, the maximum value 8191 of pitch bend data corresponds to 300 cents. In the pitch bend data change curve of FIG. 6, it can be easily understood that the first peak value, which is not clear how much the pitch changes, is a change of 200 cents (whole sound) according to FIG. .
FIG. 3 is a diagram showing an example of an input display screen for pitch bend data and pitch change (cent value) corresponding to the graphic display of FIG. Pitch bend range (PB_range) data is stored in the second line of the input screen, and it is defined that the maximum pitch change amount by the subsequent pitch bend data is 300 cents. When the value of pitch bend data is input to the item of data 1 on the input screen in the line where the parameter is “pitch bend”, the pitch is input to the item of data 2 by the pitch bend data input process of FIG. The cent value corresponding to the amount of change is displayed. When a cent value is input as the pitch change amount at the data 2 item, the pitch bend value is displayed at the data 1 item by the pitch change input processing of FIG.
[0013]
FIG. 7 shows a comparison between a display example of the conventional pitch bend data display device and a display example of the pitch bend data display device of the present invention in the case where data specifying the pitch bend range is included in the sequence data (during performance). FIG. FIG. 7A shows a conventional display example, and FIG. 7B shows a display example of the present invention. Here, as data specifying the pitch bend range, “pitch bend sensitivity (range)”, “GM reset” in which an initial value of the pitch bend range is determined, and the like correspond. For example, as shown in the figure, two pitch bend data curves having the same way of changing the pitch bend data are stored in the sequence data, and the pitch bend range is set to 200 cent as data specifying the pitch bend range and 1200 cent. If things occur in sequence, the two curves shown in the figure are displayed as the same, although the pitch bend range is changed in the conventional one. On the other hand, according to the pitch bend data display device according to the present invention, as shown in FIG. 7B, the curves indicating the pitch change amounts are displayed in accordance with the pitch bend range so that the magnitude relationship becomes clear. In this case, the operator can easily recognize how much pitch bend is applied.
[0014]
As in the above-described embodiment, the present invention is not limited to a keyboard instrument, but may be a string instrument type, a wind instrument type, a percussion instrument type, or the like. Moreover, the apparatus which does not have a performance operator like these may be sufficient.
Further, the electronic musical instrument is not limited to an electronic musical instrument having a built-in sound source device, automatic performance device, etc., but each may be a separate device, and each device may be connected using communication means such as MIDI or various networks.
In the above-described embodiment, the automatic performance device has a built-in tone generator circuit, and the tone generator circuit is configured to use the pitch bend range setting operator or by data specifying the pitch bend range included in the sequence data. Although an example in which the pitch bend range is set has been shown, the sound source device is a separate device from the device of the present invention, and is connected to the device of the present invention through a communication means such as MIDI. Irrespective of the sound source device, the pitch bend range may be set independently. In such a case, a pitch bend range data request command is transmitted from the device of the present invention to the sound source device, and the sound source device receiving the command sends back the pitch bend range data to the device of the present invention. By receiving the pitch bend range data, the pitch bend data can be converted into a pitch change amount for display in the apparatus of the present invention, or can be converted into pitch bend data by inputting the pitch change amount.
[0015]
According to the above-described embodiment, there is an effect that the pitch bend data can be displayed or input with a musically easy-to-understand value such as a cent value or a semitone number.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a display screen according to a pitch bend data display device of the present invention.
FIG. 2 is a block diagram showing an overall configuration of an automatic performance device having a pitch bend data display and input device according to the present invention.
FIG. 3 is a diagram showing an example of an input display screen for pitch bend data and pitch change (cent value) corresponding to the graphic display of FIG. 1;
FIG. 4 is a diagram illustrating an example of processing performed in response to an operation of a pitch bend range setting operator.
5A is a diagram illustrating an example of processing performed in response to an operation of a pitch change amount input operator, and FIG. 5B is a processing performed in response to an operation of a pitch bend data input operator. It is a figure which shows an example.
FIG. 6 is a diagram showing a display example of a conventional pitch bend data display device.
FIG. 7 shows a comparison between a display example of a conventional pitch bend data display device and a display example of the pitch bend data display device of the present invention in the case where data specifying the pitch bend range is included in sequence data (during performance). FIG.
[Explanation of symbols]
21 ... CPU, 22 ... ROM, 23 ... RAM, 24 ... floppy disk drive, 25 ... hard disk drive, 26 ... CD-ROM drive, 27 ... communication interface, 28 ... communication network, 29 ... server computer, 2A ... MIDI interface, 2B ... Other MIDI devices, 2C ... keyboard, 2D ... key press detection circuit, 2E ... panel switch, 2F ... switch detection circuit, 2G ... display, 2H ... display circuit, 2J ... sound source circuit, 2K ... effect circuit, 2L ... Sound system, 2M ... Data and address bus, 2N ... Timer

Claims (2)

Means for sending the pitch bend range data request command, receives the pitch bend range data sent back from the sound source device according to pitch bend range data request command the transmission to an external tone generator device connected via a communication means,
An input means for inputting pitch bend data taking a value within a specific range;
Conversion means for converting the value of the input pitch bend data into a value representing a pitch change amount such as a cent value or a semitone number based on the received pitch bend range data ;
A pitch bend data display device comprising display means for numerically or graphically displaying the value converted by the conversion means. Means for sending the pitch bend range data request command, receives the pitch bend range data sent back from the sound source device according to pitch bend range data request command the transmission to an external tone generator device connected via a communication means,
An input means for inputting a value representing a pitch change amount such as a cent value or a semitone using a numerical value or a graphical interface;
A pitch bend data input device comprising: conversion means for converting an input value representing a pitch change amount into a pitch bend data value that takes a value in a specific range based on set pitch bend range data .

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