JPH0284694A - Air flow responsive sound instruction device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an electronic musical instrument, and in particular to an electronic musical instrument that generates a desired musical tone in response to the state of airflow caused by a press operation or the like.
Regarding airflow responsive electronic musical instruments.

[Background] In the field of 11g1 type musical instruments, electronic musical instruments having a so-called touch response function are known.

The function currently called the touch response function is the key press speed (initial touch speed) for each part on the keyboard,
Sensors installed in each part detect the operation input to the key after the key has been pressed to a certain extent, generate initial touch data and aftertouch data based on each, and reflect both data in the characteristics of the musical sound. It is a function.

Some models only have a touch response function for initial data.By the way, as shown in Japanese Utility Model Application No. 59-15099 and Japanese Patent Application Laid-open No. 62-164094, the applicant has A type of electronic musical instrument that uses
Below, we will refer to it as an “airflow responsive electronic musical instrument”! However, in such airflow responsive electronic musical instruments, it is not possible to fully reflect the performance intention of the wind player in the control of the generated musical sound, and it is difficult to control the musical sound being generated. There was a risk that the musical tone would become monotonous.

Therefore, conventionally, after generating musical tones.

There is a need for the development of electronic musical instruments that can produce richly expressive musical tones by adding vibrato to the musical tones being generated depending on the blowing style of the wind player.

[Object of the Invention 1 The object of the present invention is to provide an airflow responsive electronic musical instrument that satisfies such demands.

Furthermore, it is an object of the present invention to provide an electronic musical instrument that is responsive to various press operations, wind operations, etc., and capable of generating musical tones with rich expressive power.

[Summary of the Invention] In order to achieve such an object, the present invention provides a method in which the output value of the detection signal detected by the airflow detection means remains for a predetermined time or more after musical tones are generated according to instructions from the musical sound generation instruction means. The key point is that when the output value continues to remain substantially the same, the pitch of the musical tone being generated is changed and controlled by the control means in response.

Further, the present invention provides that after the musical tone is generated in accordance with the instructions of the musical tone generation instruction means, the output value of the detection signal detected by the air flow detection means is equal to or higher than a predetermined value. The key point is to change and control the pitch of the sound by the control means.

[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Structure> The configuration of this embodiment is shown in FIG. 1. Reference numeral 1 denotes a blowing input section, and when a breath is blown through the mouse 1b, the internal wind sensor or press sensor 1b detects the strength of the breath or the air. The speed of the flow is detected. Press sensor 1a
For example, Japanese Patent Application Laid-Open No. 57-420 filed by the same applicant
9 (published on March 9, 1981, "Electronic Whistle") can be used.

Reference numeral 2 denotes a key switch section (KEY 5W) 2 that includes a key for specifying pitch (keyhole pitch information input means).

In the figure, is the blowing input section l and the pitch specification keys group? Although shown as separate blocks, any known type can be used, such as a whistle or a harmonica, which may be integrated.

The analog output from the press sensor 1 is taken into a microcomputer with a built-in A/D converter and processed as digital data. In the blowing mode, A/D conversion is always performed, and the microcomputer 3 samples (reads) data at regular time intervals.
The microcomputer 3 also reads pitch information in the form of a key code from the key switch unit 2. From these two inputs, the microcomputer generates musical tone control information (sounding start code, sounding end code, pitch data, initial data, after data) and transfers it to the sound source 4.

The sound source 4 generates and modulates a musical tone signal based on the control information sent from the microcomputer 3, and sends it to the sound system.

The sound system amplifies and acoustically converts electrical signals through an amplifier 5 and a speaker 6, and outputs the final sound.

Here, the above-mentioned initial data and after-sales data are
Used to control the characteristics of the musical tones to be generated. The initial data of the former is used as response data for controlling the generation of musical tones at the beginning of playing, and the after data of the latter is used as response data for controlling the musical tones after the musical tones have started to be produced or while they are being produced. The various data used in this embodiment are as follows.

Volume data: Data that controls the volume of musical tones at the start of generation or while they are being generated.

Vibrato data: Via added to the pitch of the musical note being sounded. Determines the depth of the blurt. Data. Pitch bend instead of this data, i.e. pitch of musical tones data that determines the degree of bend in May be used.

Voltament speed data: Voltament speed applied to musical notes The data that determines the degree of ment is the goal from the starting pitch. Pitch to Pitch Refers to smooth changes over time. In this example is a glissando (from the starting pitch) Step by step pitch to target pitch This refers to changes over time. Use for taste.

Operation> The operation of the above embodiment will be described below with reference to FIGS. 2 and 3.

Figure 2 is a flowchart of the microcomputer.In the main flow, the keys for specifying pitch (KEY SW)
is read (A1), and for each reading cycle of AD data (digital data indicating the strength of breath from the press sensor), a timer interoperable flow (B1 to B24) is entered and processing is performed.

The ts3 diagram exemplifies AD data (vertical axis) for AD reading cycle recycling (horizontal axis). In other words, it is the change in breath strength over an hour. For convenience of explanation, the strength of the breath is shown with various changes.The present invention monitors the strength of the breath to perform pronunciation processing, pronunciation end processing (key-off processing), and initial data (volume, timbre, etc.). (used to control volume data, vibrato data, pitch bend data, etc.) and after data (used to control volume data, vibrato data, pitch bend data, etc.). Furthermore, in this embodiment, when the key switch for specifying the pitch is changed, the speed of the voltament is also changed according to the rate of change over time of the breath level.

In the figure, AD data has an 8-bit configuration.

First, we will discuss the determination of the start of sound generation and the generation of initial data.
When the lower limit level or on-threshold level (10 in this example) is exceeded, it is regarded as the start of sound generation, and the AD sample N at the time it exceeds it and the samples N-1 and N before and after it.
Using the three +1 samples, the rate of change or difference is determined and used as response data, that is, initial data (see Fig. 3, ■ and ■).

According to 70- in FIG. 2, in the cycle of sample N-1, B1. Master the flow through the NOs of B2, B3, and B4. In the cycle of sample N, the on level of the AD data is detected (■ in FIG. 3), and at B5, tone generation timing processing (calculation of the difference from the tone generation timing 7 lag set) is performed. Then, when entering the cycle of sample N+1, B
It was confirmed that the sound was on standby at 3, and 1/2 as shown in Figure 3.
(A + D), that is, find the difference A between the previous sample N and the current sample N+1, add this to the previous difference, and take the average to generate initial data.BS), sound source Transfer to 4 B7), current KEY
Sound generation processing is executed according to the data (pitch data) of SW2 (B7).

On the sound source 4 side, pitch, volume, and timbre are added to the musical sound to be generated according to pitch data corresponding to KEYSW2 pressed by the blow player and initial data corresponding to the blowing method at the beginning of the blow by the blow player, and a musical sound is generated. Create a signal.

The AD data after sample (N+2) is sequentially sampled (while playing) to generate after data, and the value of each sample is converted into volume data or the like. The range of the volume data is divided into a total of 200 levels of +100 and -99, centering on the AD data 11O (see ■ in FIG. 3) (see [stock], ■, and @ in FIG. 3).

In a cycle in which only pitch data is generated and sent, the second
In the figure, B1, B2, B9, B12, B13. B1
Pass through 4. In addition, when there is no change in AD data, sound source 4
There is no operation for (B9→BIO: No).

When vibrato data (or bend data) is generated during a performance, it is generated in response to one of the following events. The first is when the AD data, that is, the strength of breath is constant and the state is greater than or equal to nI at a predetermined time (■
, ■), and the second case is when the AD data exceeds a predetermined vibrato-on level (■ in FIG. 3).

In the first case, the modulation depth of the vibrato (pitch bend) increases with the duration of a certain level.

On the other hand, in the second case, the depth of the vibrato (pitch bend) is controlled according to the rate of change in breath strength at that time (■ in Figure 3), and weighted according to the size of the AD data. (■ in Figure 3)
In other words, the stronger the breath, and the stronger the breath, the deeper the vibrato (pitch bend) will be applied.

In the AD data read cycle corresponding to the first case, in Fig. 2, the process goes to BIO via B1, B2, and B9, where it is confirmed that the vibrato (bend) is on time, and the vibrato (bend) is turned on at Bll. (bend) data is generated and the generated vibrato (bend) data is sent to the sound source 4.

On the other hand, in the AD data reading cycle corresponding to the second case, in FIG. At this point, vibrato (bend) data is generated together with volume data, and these data are transferred to the sound source 4.

During blowing, the voltament process occurs for the following events: In other words, the key switch for specifying pitch (
This is when there is a change in KEY 5W2) (see ■ in Figure 3), and the strength of the breath at that time (AD data)
The speed of voltament (in other words, the time IrI from the pitch of the key before the change to the pitch of the key after the change) is set according to the rate of change of (see ■ in Figure 3).
.

Referring to FIG. 2, when there is a change in KEY SW2, this is confirmed in B16 of the AD data processing flow via AI in the main flow, voltage sweep-on is executed (B17), and the AD data is changed. The voltament speed or time is set from the rate of change of (
818, the changed key code is sent to the sound source 4 (or the voltament processing module in the microcomputer 3) (B l 9).

From then on, the voltament data (pitch) is updated in the voltament processing module, and when the pitch exceeds the target pitch (the pitch indicated by the changed key code), the process advances to B20, 821, and the voltament sweep is performed. Turn off.

Finally, we will discuss the determination of the end of pronunciation.

The AD data is set to a predetermined setting value, that is, the lower limit level or key-off threshold level (10 in Fig. 3).
) for a certain amount of time or more than a certain number of times (third
In the figure, the key-off is considered to be the end, i.e., the blowing has ended (see @ in Fig. 3).The key-off, i.e., the blowing, is considered to have ended when it continues for a certain time or number of times. This is to prevent the sound end processing from being executed immediately because the level of the AD data may momentarily drop below the key-off threshold level due to the weakening of the breath while playing. .

If it is only a case of an instantaneous level drop, it is detected at B12 in FIG. 2 that the AD level has reached the key-off level, but it is determined that the key-off level is not at B22, so the blowing Return to B13 of the middle flow. On the other hand, when you stop playing (for a breather), YES is returned at B22, voltage sweep is turned off (B23), and key-off (end of sound production) processing is executed (B24). .

Modifications> The present invention is not limited to the above embodiments, and various modifications and changes are possible.

For example, other modulation parameters may be added to the after data. For example, amplitude modulation of musical tones (for example,
As an alternative, the parameters used to apply a tremolo effect), the parameters used to apply phase modulation to a musical tone (e.g. chorus effect, phasing effect), or the parameters used to apply frequency modulation other than those mentioned above, Or it can be added as a parameter for combined use.

In addition, a selection switch for selecting various modulation parameters may be provided. For example, a voltament key may be provided, and when the voltament mode is selected by the voltament key, the above-mentioned event (change in pitch key) ) to apply voltage sweep when it occurs.

Regarding the sensor, it may be possible to detect inhalation instead of or in combination with the above-mentioned detection of exhalation, and furthermore, it is possible to detect airflow from a hand or foot, etc. Operate with to push out the airflow,
This airflow may be detected by a sensor.

Also, the key switch group for pitch does not necessarily have to be 0.
For example, melody information (series of pitch data) may be set in memory, and by giving blowing input via a sensor, pitch data may be retrieved from memory and performance processing performed when sound generation starts. In this case, the main flow in Fig. 2 is unnecessary, and the next pitch data is read from the memory at, for example, B8 in the AD data processing flow, or the press sensor reads the pitch key as a harmonica type. It may also serve as

[Effects of the Invention] As is clear from the above description, the present invention provides the following advantages: after a musical tone is generated in accordance with the instructions of the musical tone generation instruction means, the output value of the detection signal detected by the airflow detection means remains constant for a predetermined period of time or more. If the output value continues to remain the same, the pitch of the currently generated musical tone is changed and controlled by the control means in response. This can be effectively reflected in pitch control, and therefore it is possible to perform musical tones with rich expression.

Further, the present invention provides that after the musical tone is generated in accordance with the instructions of the musical tone generation instruction means, the output value of the detection signal detected by the air flow detection means is equal to or higher than a predetermined value. Since the pitch of the musical tone is changed and controlled by the control means, the performer's performance intention after the musical tone is generated can be effectively reflected in the pitch control of the musical tone that is currently being generated. Can perform musical sounds.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an electronic circuit according to an embodiment of the present invention, FIG. 2 is a flowchart of the operation of an embodiment of the invention, and FIG. 3 is a diagram used to explain the operation of this embodiment. 1...Blowing input section, la...Press sensor 3...Microcomputer.

Claims (10)

[Claims] (1) Air flow detection means that sequentially detects the state of the air fluid and sequentially outputs corresponding detection signals, and a musical tone that instructs generation of musical tones based on the detection signals sequentially output from the air flow detection means. If the output value of the detection signal remains substantially the same for a predetermined period of time or more after a musical tone is generated according to the instructions of the musical tone generation instruction means, in response to the musical tone being generated, An airflow-responsive electronic musical instrument characterized by comprising: a control means for controlling to change the pitch of the pitch; (2) The airflow responsive electronic musical instrument according to claim 1, wherein the control means periodically changes the pitch of the musical tone being generated as time passes, and adds vibrato to the musical tone. (3) The control means changes the degree of change in the pitch of the musical tone being generated depending on the length of time that the output value of the detection signal continues at substantially the same output value. The airflow responsive electronic musical instrument described above. (4) The air flow responsive electronic musical instrument according to claim 1, wherein the air flow detection means comprises fluid pressure detection means for detecting fluid pressure of air fluid. (5) The air flow detection means includes a fluid detection sensor means that detects the state of the air fluid and sequentially outputs corresponding analog electrical signals, and an analog electrical signal sequentially output from the fluid detection sensor means. The analog/digital signal is sequentially converted into a corresponding digital signal and output as the detection signal.
An air flow responsive electronic musical instrument according to claim 1, comprising digital conversion means. (6) Air flow detection means that sequentially detects the state of the air fluid and sequentially outputs corresponding detection signals, and a musical tone that instructs generation of musical tones based on the detection signals sequentially output from the air flow detection means. generation instructing means; after the musical tone is generated according to the instructions of the musical tone generation instructing means, the pitch of the musical tone being generated is changed on the condition that the output value of the detection signal becomes a predetermined value or more; An air flow responsive electronic musical instrument characterized by comprising: a control means for controlling; and a control means for controlling. (7) The airflow responsive electronic musical instrument according to claim 6, wherein the control means periodically changes the pitch of the musical tone being generated as time passes, and adds vibrato to the musical tone. (8) The airflow responsive electronic musical instrument according to claim 6, wherein the control means changes the degree of change in the pitch of the musical tone being generated in accordance with the state of change in the output value of the detection signal. (9) The air flow responsive electronic musical instrument according to claim 6, wherein the air flow detection means comprises fluid pressure detection means for detecting fluid pressure of air fluid. (10) The air flow detection means includes a fluid detection sensor means that detects the state of the air fluid and sequentially outputs corresponding analog electrical signals, and an analog electrical signal sequentially output from the fluid detection sensor means. 7. The airflow responsive electronic musical instrument according to claim 6, further comprising analog/digital conversion means for sequentially converting into corresponding digital signals and outputting the detected signals as the detection signals.