JP2510095Y2 - Electronic wind instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an improvement of an electronic wind instrument that generates a predetermined musical tone in a wind instrument body based on a performance operation and outputs the tone.

[Prior Art] Conventionally, as an example of an electronic wind instrument, one in which a circuit for generating and outputting a musical sound is built in a main body of a wind instrument is known, for example, from Japanese Patent Application Laid-Open No. 57-42094. This electronic wind instrument operates as follows.

In other words, when you breathe in through the mouthpiece, the breath sensor in the wind instrument body detects the speed or pressure of the airflow of the breath, and the detected value is digitally stored in the central processing unit (microcomputer). Processed as data. In the wind mode,
The A / D conversion is always performed, and the central processing unit reads the digital data at regular time intervals and also reads the pitch information from the pitch switch that is selectively designated and operated, and outputs the central data from these two inputs. The processor generates musical tone control information and transfers it to the sound source. The sound source generates and modulates a tone signal of a specified pitch based on the control information sent from the central processing unit, and sends this to a sound system consisting of an amplifier, a speaker, etc., where an electronic signal is amplified and acoustically converted. And finally, a musical sound is output.

[Problems to be Solved by the Invention] In general, a wind instrument has a small overall size because it is played while being held by a hand. Therefore, in reality, only a few control switches can be arranged in the wind instrument body having a small mounting space. If various kinds of control switches are provided, there is a problem that not only the size of the wind instrument as a whole has to be increased, but also the cost increases accordingly.

[Object of the Invention] Therefore, the present invention can perform a performance operation according to a predetermined fingering performance method without increasing various control switches even for a wind instrument main body having a small mounting space, and therefore, it can be changed. It is an object of the present invention to provide an electronic wind instrument that enables rich performance and is inexpensive.

[Summary of the Invention] In order to achieve the above object, the present invention specifies whether to generate a musical tone at the pitch converted by the pitch converting means or not according to the designated operation state of the musical tone parameter control means at power-on. It is configured to determine whether to generate a musical sound at the pitch designated by the means.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. 1 (a) and 1 (b) are a front view and a right side view showing the appearance of an embodiment of an electronic wind instrument according to the present invention, in which the wind instrument body 10 shows the strength and volume of the breather's breath. A press sensor 1 for sensing, a pitch designation switch group 2, a tone color changeover switch 3-1, which serves as a musical tone parameter changeover switch 3, a portamento changeover switch 3-2, and a transpose changeover switch 3-3 are provided. In addition to this, an octave changeover switch, a rhythm start / stop switch, and a speaker 6 are arranged.

FIG. 2 is a block diagram showing an electric circuit in the wind instrument main body 10 of FIG. 1, and the central processing unit (CPU) 1 has the following functions. That is, the first function is to receive the pitch information generated from the pitch designating switch group 2 and output it to the musical tone generating circuit 8. The second function is that the breath information from the breath sensor 1 is first converted into a voltage by the conversion circuit 9, and this voltage value is further converted into a digital value by the A / D converter 11, The central processing unit 7 receives the digital breath information converted into the digital value, and outputs it to the tone generation circuit 8 as tone generation start instruction information and tone control information such as volume and tone color. The third function of the central processing unit 7 is to receive the pitch information from the pitch designating switch group 2 and the tone color information selected by the tone color changeover switch 3-1 and specify the tone color information in accordance with each information. This is to output a tone of a specific pitch with the tone color of No. 2 to the tone output device 13 including the amplifier 12 and the speaker 6. The tone output device 13 outputs the tone after the level of the introduced tone is converted. The fourth function of the central processing unit 7 is that when the power switch 15 is turned on and a power current is supplied from the power circuit 16 to each part, the designated operation state of the tone parameter changeover switch 3 (in this embodiment, , Portamento switch 3-3
Pitch switch group 2 depending on the on / off operation state of
This is a function for determining whether to generate a musical tone of a pitch designated by the designation operation of or to generate a musical tone with a pitch converted by a pitch conversion table 14 described later.
The pitch conversion table 14 includes the pitch designation switch group 2
By converting the pitch designated by the designated operation into a pitch conforming to various fingering performances, the same pitch designating switches 2-1 to 2-8 in the pitch designating switch group 2 are converted. Even when a designated operation is performed, a musical tone can be generated at a pitch that complies with various fingering performance methods. The specific contents of the pitch conversion table 14 will be described later.

Next, FIG. 3 shows the relationship between the pitch designation and each pitch designation switch group 2 in the case of conforming to two kinds of fingering performance methods, and FIG. 3 (1) shows the operation of the recorder. The relationship between the pitch designation switch group 2 and the generated pitch when the finger performance method is followed is shown. On the other hand, FIG. 3 (2) shows the relationship between the pitch designating switch group 2 and the generated pitch when based on a special fingering performance method. In this figure, ● (black circle) indicates the case where the pitch designation switch is in the ON state.

In the case of the former recorder's fingering performance method, the fifth pitch designation switch 2-5 is a switch for raising a semitone. In the latter special fingering performance method, three pitch designation switches 2-2, 2-3, 2-of the second, third and fourth pitches are used.
By the designation operation of No. 4, seven pitches of Do, Re, Mi, Fa, So, La, and Si are designated, and by the designation operation of the sixth pitch designation switch 2-6, the second, third, The pitches designated by the fourth pitch-designating switches 2-2, 2-3, and 2-4 are increased by a semitone.

Next, FIGS. 4 (1) and 4 (2) show the contents of the pitch conversion table for converting the pitch into a pitch based on the fingering performance method of the recorder when the pitch designating switch group 2 is designated and operated. The contents of the pitch conversion table for converting the pitch according to the special fingering performance method are shown. Which of these pitch conversion tables is selected depends on "0" of the upper 2 bits of the address.
It is selected by either "1" or "02", and the lower 2 bits "0"
The predetermined pitch data is designated by designating any one of "0" to "FF" (hexadecimal expression). For example, when the power switch 15 is turned on and the portamento selector switch 3-2 is turned on, the upper 2 bits of the address are "02", and therefore the pitch according to the special fingering performance method. The conversion table side (Fig. 4 (2)) side is selected. Then, in that state, for example, if only the pitch designating switch 2-3 is turned on, the lower bit "04" is designated.
The pitch data of “B ₄ ” is designated.

FIGS. 5 and 6 are flowcharts for explaining the operation of the electronic wind instrument of the present invention constructed as shown in FIGS. 1 and 2, and FIG. 5 shows the case where the power switch 15 is turned on. It is a flowchart.

In this flowchart, first, the power switch 15
When is turned on (step S ₁ ), various data and input / output ports are set to initial values (step S ₂ ), and then the portamento changeover switch 3-1 is turned on or off. Is determined (step
S ₃ ). When the portamento changeover switch 3-1 is operated to be turned on, "1" is set to the fingering flag, and conversely, when it is operated to be off, nothing is done and the flow exits from this flow.

Next, a sixth flowchart showing a main flowchart of this embodiment.
Explaining the figure, first, the specified operation state of the pitch specification switch group 2 is checked (step M ₁ ), and the pitch value corresponding to the specified operation state is written in the corresponding pitch specification buffer (step M _2). ), After that, the content of the fingering flag is checked (step M ₃ ), and as a result, if “1” is set in the fingering flag, the specified pitch is based on the special fingering performance method. Fingering conversion table to convert high
Refer to the contents of 14 (see Fig. 4 (2)) and refer to the table.
The pitch data according to the content of 14 is output to the tone generation circuit 8 (step M4). On the other hand, if "1" is not set in the fingering flag, the pitch according to the fingering performance method of Luda The contents of the fingering conversion table 14 for converting the specified pitch (see (1) in FIG. 4) are referred to, and pitch data according to the contents of the table 14 is output to the tone generation circuit 8. (step M _5). After that, if the designated operation state of the pitch designating switch group 2 has changed, new pitch information is output to the musical tone generating circuit 8, and if there is no change, nothing is done.

As is clear from this main flow chart, the fingering finger that determines which fingering performance method to use to generate musical tones in addition to the original portamento switch is used as the portamento selector switch 3-2. Since it is also used as a determining means, it is not necessary to provide a special switch for determining fingering, and therefore the wind instrument body 10
Not only can the upper part be used effectively, but it can also contribute to the cost reduction of the wind instrument as a whole.

In this embodiment, as the musical tone parameter control means, the portamento changeover switch 3-2, which is relatively infrequently used in musical tone performance, is used, but other musical tone parameter changeover switches such as the tone color changeover switch 3-1 are used. You may use. Further, in this embodiment, the description has been given of the case where the pitch performance is performed according to the two types of performance methods of the recorder fingering performance method and the special fingering performance method, but the present invention is not limited to this, and other fingering performance methods are used. It is also applicable to the pitch performance according to.

[Effect of the Invention] As is apparent from the above description, according to the present invention,
Depending on the designated operation state of the musical tone parameter control means when the power is turned on, it is determined whether the musical tone is generated at the pitch converted by the pitch converting means or the musical pitch is generated at the pitch designated by the pitch specifying means. As a result, it is possible to eliminate the need for a dedicated changeover switch for selecting which musical tone is to be generated at a pitch according to the fingering performance method. Therefore, it is possible to effectively use a narrow space on the wind instrument main body and to reduce the manufacturing cost of the wind instrument as a whole.

[Brief description of drawings]

1 (a) and 1 (b) are a front view and a right side view showing an appearance of an embodiment of an electronic wind instrument according to the present invention, and FIG. 2 is a block showing an electric circuit used in the electronic wind instrument shown in FIG. FIGS. 3 (1) and 3 (2) are diagrams showing the relationship between the pitch and the pitch designating switch in accordance with two types of fingering performance methods, and FIGS. 4 (1) and 4 (2) are FIG. 5 is a diagram showing the contents of a pitch conversion table for conforming to two types of fingering playing methods, FIG. 5 is a flowchart when the power switch is turned on, and FIG. 6 is a flowchart for explaining the operation of this embodiment. . 2 ... Pitch designation switch group, 3 ... Tone parameter changeover switch, 3-1 ... Tone changeover switch, 3-2 ... Portamento changeover switch, 3-3 ... Transpose changeover switch, 7 ... Central processing Device, 8 ... Music tone generation circuit, 13 ... Music sound output device, 14 ... Pitch conversion table, 15
...... Power switch.

Claims (1)

(57) [Scope of utility model registration request] 1. A tone pitch designating means provided in a wind instrument body for designating a musical tone of a predetermined pitch by a pressing operation, and generating a musical tone having a pitch designated by the tone pitch designating means by a breath pressure operation. The breath pressure operating means to be instructed by, and the musical sound instructed by the breath pressure operation of this breath pressure operating means,
In an electronic wind instrument comprising a musical tone generating means for generating a pitch designated by the pitch designating means, and a musical tone parameter control means for controlling a parameter of a musical tone to be generated by the musical tone generating means by a designated operation, When a predetermined pitch is designated and operated by the pitch designating means, at least one pitch converting means for converting to a pitch other than the designated and operated pitch, and the pitch converting means Fingering determining means for determining whether to generate a musical tone at a pitch or whether to generate a musical tone at a pitch designated by the pitch designating means according to a designated operation state of the musical tone parameter control means at power-on, An electronic wind instrument characterized by being equipped with.