JP6923047B2 - Musical tone control device, electronic musical instrument, control method of musical tone control device, and program of musical tone control device - Google Patents

Description

The present invention relates to a musical tone control device, an electronic musical instrument, a control method of the musical tone control device, and a program of the musical tone control device.

In an electronic musical instrument that electronically synthesizes and outputs the musical sound of a wind instrument, it is known that a plurality of pressure-sensitive lip detection units are arranged on the lead to detect the positions of the lips and the tongue and control the musical sound. It is known that this type of electronic musical instrument can be pronounced after adding an effect or sound effect to a musical sound signal (see Patent Document 1).

Japanese Unexamined Patent Publication No. 7-72853

There are several ways to apply the effect. For example, it is known that the effect applied changes depending on the position of the lower lip (lip position) on the lead, and the performer sets the lip position. By moving it, the effect given can be changed to give a wider range to the performance.

By the way, it is known that there are the following two types of movements of the lower lip when the performer moves his mouth away from the mouthpiece, for example, to stop the pronunciation.
(A) Release the lower lip while pulling the mouthpiece. That is, the lower lip moves away from the mouthpiece while moving toward the tip of the lead.
(B) Separate the lower lip vertically. That is, the lower lip moves away from the mouthpiece so as to move directly below without moving toward the tip of the lead.

Then, the performer often performs the operation (a) above. Since this operation involves the movement of the lip position, as described above, if the effect applied to the sound is configured to change according to the lip position, the operation (a) above is applied. This will cause unintended changes in the effect. The occurrence of such an effect has little effect when the performance ends with a weak or attenuated sound, and is not a problem, but when a strong or continuous sound is produced at the end of the performance, the change in this effect changes. It stands out as a jarring sound.

The present invention has been made in view of such circumstances, and is an electronic musical instrument or an electronic musical instrument capable of preventing an unintended harsh sound of a performer from being generated by an effect that changes according to a lip position. It is an object of the present invention to provide a control method and a program of an electronic musical instrument.

In order to achieve the above object, the musical tone control device of the present invention first controls the musical tone generated by the sound source unit based on the sensor information from the lip detection sensor that detects the contact state of the lip on the lead. Based on the first musical tone control process for performing the above, the detection process for detecting the mode and timing of the movement of the lip moving away from the lead based on the sensor information, and the mode and the timing detected by the detection process. It is characterized by having a processing unit that executes a second musical sound control process that performs a second control on the musical sound generated by the sound source unit.

According to the present invention, when the lower lip is separated from the lead, it is possible to prevent the performer from generating an unintended sound due to an effect in which the form of application changes according to the lip position.

(A) is a plan view of the electronic musical instrument according to the embodiment of the present invention, and (b) is a side view of the electronic musical instrument. It is a block diagram which shows the functional structure of an electronic musical instrument. (A) is a cross-sectional view showing a mouthpiece, and (b) is a bottom view showing a mouthpiece. It is a figure which shows the contact state between a performer's oral cavity and a mouthpiece. It is a figure which shows typically the sensing part on the lead. (A) is a table showing an example of the sensor value for each position on the lead, the total sensor value, and the time transition in the center of gravity when the mouthpiece is pulled and released, and (b) is the lower lip vertically separated from the mouthpiece. It is the same table as FIG. 6A in the case of. (A) is a graph showing the time transition of the sensor value for each position in FIG. 6 (a), and (b) is a graph showing the time transition of the sensor value for each position in FIG. 6 (b). (A) is a graph showing the relationship between the position of the center of gravity and the total sensor value in FIG. 6 (a), and (b) is a graph showing the relationship between the position of the center of gravity and the total sensor value in FIG. 6 (b). It is a flowchart which shows the main routine. It is a flowchart which shows the process flow of the lower lip position / tongue detection part.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. The electronic musical instrument according to the present embodiment is an electronic musical instrument that expresses a performance according to the playing method (for example, pitch bend or vibrato) of an acoustic wind instrument which is a woodwind instrument using a lead. Here, an example in which the electronic musical instrument is a saxophone will be described. However, the present invention is not limited to this, and may be applied to an electronic musical instrument that imitates another wind instrument such as a clarinet. The same elements are designated by the same reference numerals throughout the description of the embodiment.

[Composition of electronic musical instruments]
(Basic configuration of electronic musical instruments)
The basic configuration of the electronic musical instrument according to the present embodiment will be described with reference to FIG. FIG. 1A is a plan view of the electronic musical instrument, and FIG. 1B is a side view of the electronic musical instrument. As shown in FIGS. 1A and 1B, the electronic musical instrument 100 has an outer shape imitating a saxophone which is an acoustic wind instrument, and has a tube body portion 100a, an operator 1, a sound system 9, and a mouthpiece. 10 and.
The tube body portion 100a is a housing portion of the main body having a shape imitating the tube body portion of the saxophone.

The operator 1 is an operation unit that is arranged on the tube body portion 100a and is operated by the performer P (user) with a finger. The operator 1 includes a performance key for determining the pitch, a function for changing the pitch according to the key of the musical piece, a setting key for setting a function for finely adjusting the pitch, and the like, and accepts key operations from the performer P. The operation information is output to the CPU 5 described later.

The mouthpiece 10 is connected to the tube body portion 100a and is operated by the performer P in the oral cavity. A lead 11 is attached to the mouthpiece 10 as described in detail later.

The sound system 9 has a speaker and the like, and outputs musical tones. More specifically, the sound system 9 amplifies the musical sound signal input from the sound source unit 8 and outputs it as a musical sound from the built-in speaker.

Further, as shown as a partially transparent portion in FIG. 1A, a breath pressure detection unit 2, a CPU (Central Processing Unit) 5 as a control means, and a ROM (Read) are placed on a substrate built in the tube body 100a. Only Memory) 6, RAM (Random Access Memory) 7, and sound source unit 8 are provided. The CPU 5 is a part that performs overall processing, constitutes a musical tone control device that executes various operations (processes) described below, and functions as a processing unit of the musical tone control device.

The breath pressure detection unit 2 is a sensor that detects the breath pressure (breath pressure) blown into the mouthpiece 10 by the player P and outputs the breath pressure information to the CPU 5. The sound source unit 8 is a circuit that generates a musical sound, and the sound system 9 operates according to the output of the sound source unit 8. The CPU 5, ROM 6, and RAM 7 will be described later.

(Functional configuration of electronic musical instruments)
The functional configuration of the electronic musical instrument 100 will be described with reference to FIG. FIG. 2 is a block diagram showing a functional configuration of the electronic musical instrument 100. As shown in FIG. 2, the electronic musical instrument 100 includes the above-mentioned operator 1, the above-mentioned breath pressure detection unit 2, the lip detection unit 3, the tongue detection unit 4, the CPU 5, the ROM 6, the RAM 7, and the above. The sound source unit 8 and the sound system 9 described above are provided. The above-mentioned parts of the electronic musical instrument 100 except the sound system 9 are connected to each other via a bus 9a.

The lip detection unit 3 (lip detection sensor) is a capacitive touch sensor provided on the lead 11 and detects the contact of the performer P's lip (lower lip) L. The lip detection unit 3 outputs the capacitance corresponding to the contact position of the lip L and the contact area of the lip L in the touch sensor to the CPU 5 as the detection information of the lip L. How the detection information of the lip L is used by the CPU 5 will be described later.

The tongue detection unit 4 is a capacitive touch sensor provided on the lead 11 and detects the contact of the tongue (tongue) of the performer P. The tongue detection unit 4 outputs the capacitance corresponding to the contact area of the tongue in the touch sensor to the CPU 5 as the tongue detection information.

The CPU 5 is a control unit that controls each unit of the electronic musical instrument 100. The CPU 5 reads a program specified from the ROM 6 and executes various processes described later.

More specifically, the CPU 5 includes pitch information input from the operator 1, breath pressure information input from the breath pressure detection unit 2, and lip L detection information input from the lip detection unit 3. Based on the tongue detection information input from the tongue detection unit 4, the sound source unit 8 is instructed to generate a musical sound.

For example, the CPU 5 sets the pitch of the musical tone based on the pitch information input from the operator 1. Further, the CPU 5 sets the volume of the musical tone based on the breath pressure information input from the breath pressure detection unit 2. Further, the CPU 5 controls the effect given to the generated musical tone according to the detection information of the lip L input from the lip detection unit 3. The CPU 5 also sets the tonguing sound generation mode based on the tongue (tongue) contact detection information input from the tongue detection unit 4.

The CPU 5 repeatedly executes these processes at a cycle set according to the processing content. For example, the CPU 5 repeatedly determines whether or not the operator 1 has been operated at a predetermined cycle, and performs sounding processing according to the operation each time it determines that the operator 1 has been operated. At that time, the CPU 5 executes a predetermined process described later based on the output value of the lip detection unit 3.

The ROM 6 stores various data and various programs. The RAM 7 has a work area for temporarily storing various processed data.

The sound source unit 8 is a synthesizer, generates a musical tone, and outputs a musical tone signal to the sound system 9 in accordance with a musical tone generation instruction (musical tone control) of the CPU 5.

(Details of mouthpiece)
The configuration of the mouthpiece 10 will be described with reference to FIGS. 3 and 4. FIG. 3A is a cross-sectional view showing the mouthpiece 10, and FIG. 3B is a bottom view showing the mouthpiece 10. In FIG. 3A, the opening 13 side is referred to as a “tip” and the tube body portion 100a side is referred to as a “heel” along the axial direction of the mouthpiece 10.

As shown in FIGS. 3A and 3B, the mouthpiece 10 has a mouthpiece main body 10a, a lead 11, and a fixing bracket 12. The mouthpiece main body 10a is a main body component of the mouthpiece 10, and has an opening 13 for the performer P to breathe. The reed 11 is provided below the mouthpiece main body 10a, that is, corresponding to the reed position of the acoustic wind instrument. The fixing metal fitting 12 is a metal fitting for attaching the lead 11 to the mouthpiece main body 10a.

As shown in FIG. 3B, a plurality of electrode portions 40, 30 to 39 are arranged on the lead 11 at predetermined intervals from the tip side to the heel side.

Of these, the electrode unit 40 is a sensing unit of the capacitance type touch sensor S10 that constitutes the tongue detection unit 4. Further, the electrode units 30 to 39 are sensing units of the capacitance type touch sensors S20 to S29 constituting the lip detection unit 3. In the present embodiment, the lip detection unit 3 and the tongue detection unit 4 are configured as one component, but may be configured as separate components.

How the mouthpiece 10 described above is operated by the performer P will be described with reference to FIG. FIG. 4 is a diagram showing a contact state between the oral cavity of the performer P and the mouthpiece 10. As shown in FIG. 4, when playing the electronic musical instrument 100, the performer P puts the upper front tooth E1 on the upper part of the mouthpiece main body 10a, winds the lower front tooth E2 with the lower lip L, and touches the lead 11. .. In this way, the mouthpiece 10 is held by the upper anterior teeth E1 and the lip L.

The tongue inside the oral cavity during performance is either a tongue T1 (solid line) in a state of touching the lead 11 or a tongue T2 (broken line) in a state of not touching the lead 11 depending on the playing method. Here, it is known that the performer P usually brings the tongue into contact with the lead 11 with the intention of suppressing the pronunciation of the musical instrument. In order to correspond to the behavior of the performer P, the touch sensor S10 described above detects the contact state of the tongue with respect to the electrode portion 40. For example, the tongue T1 shown by the solid line in FIG. 4 indicates a state of being in contact with the lead 11, and the tongue T2 shown by the alternate long and short dash line in FIG. 4 indicates a state of being separated from the lead 11. Then, the touch sensor S10 outputs the detection information to the CPU 5.

Further, the performer P usually brings the lip L into contact with the mouthpiece 10 at the time of sounding. In this case, the performer P may change the sound by manipulating the contact position and contact area (contact pressure) of the lip L. Corresponding to such a playing style, the touch sensors S20 to S29 detect the contact state of the lip L with respect to the electrode portions 30 to 39. Then, the touch sensors S20 to S29 output their respective detection information to the CPU 5.

The CPU 5 calculates the contact position (center of gravity position) of the lip L on the lead 11 according to the detection information output from the touch sensors S20 to S29, as will be described in detail later. Further, the CPU 5 determines the contact state (T1, T2) of the tongue based on the detection information output from the touch sensor S10.

The quantity, arrangement, and shape of the touch sensor and the electrode unit constituting the lip detection unit 3 and the tongue detection unit 4 can be arbitrarily set according to the specifications.

(Position of contact with lip lead)
In the lip detection unit 3 having the above configuration, the lip L often comes into contact with a plurality of electrode units. In this embodiment, the position of the center of gravity of the lip L on the lead 11 is calculated in order to determine the contact position of the lip L at that time at one point. Therefore, a method of calculating the position of the center of gravity of the lip L with respect to the lead 11 will be described with reference to FIG.

As described with reference to FIG. 3B, the plurality of rectangular electrode portions 40, 30 to 39 are aligned along the extending direction or the longitudinal direction of the lead 11. The electrode portion 40 of the touch sensor S10 constituting the tongue detection unit 4 is arranged at one end on the player P side, and the electrodes of the touch sensors S20 to S29 constituting the lip detection unit 3 are adjacent to the electrode portion 40. The portions 30 to 39 are arranged at equal intervals toward the opposite end. FIG. 5 is a diagram schematically showing the electrode portions 40, 30 to 39 on the lead 11, and in FIG. 5, the positions of the electrode portions 30 to 39 are set to the electrodes so that the following description can be easily understood. It is represented by P1 to P10 from the unit 40 side, and numbers "1" to "10" are assigned to each.

ここで、ｎはタッチセンサの数である。
なお、この式は一般に重心位置を算出するときに用いられる式である。 The contact position (center of gravity position xG) of the lip L with the lead 11 can be calculated by the following equation using the output values mi of the touch sensors S20 to S29 and the positions xi of the electrode portions 30 to 39.

Here, n is the number of touch sensors.
This formula is generally used when calculating the position of the center of gravity.

と算出される。 For example, when the output values of the touch sensors S20 to S29 corresponding to the positions "P1" to "P10" are 0,0,0,0,90,120,150,120,90,0,0, respectively, the lip L Center of gravity position xG is

Is calculated.

In the present embodiment, the position of the center of gravity of the lip L is represented by the center of gravity value expressed by an integer value (7-bit binary number) from 0 to 127. In order to obtain this center of gravity value, the above-mentioned center of gravity position xG may be divided by 10 and multiplied by 127.

(Differentiation of how to separate the lower lip from the mouthpiece based on the total sensor value and the center of gravity value)
Here, with reference to FIGS. 6 to 8, the mode of the action of separating the lower lip of the lip L from the mouthpiece 10 is determined based on the total of the output values of the touch sensors S20 to S29 and the center of gravity value of the lip L. An example of the method of doing this will be described.

FIG. 6A shows the sensor values (sensor information) and the total sensor values for each position “P1” to “P10” on the lead 11 when the operation of releasing the lower lip of the lip L is started while pulling the mouthpiece 10. It is a table which shows an example of the time transition from time t1 to t5 in (the total value of the sensor information value) and the center of gravity value. FIG. 6B is a table similar to that of FIG. 6A when the operation of vertically separating the lower lip of the lip L from the mouthpiece 10 is started.

Here, the sensor value is an integer from 0 to 255, so the sum of the 10 sensor values takes a value from 0 to 2550. Further, the center of gravity value is represented by an integer from 0 to 127 as described above. Further, in the present embodiment, the sensor value and the total sensor value at the time t4 in FIG. 6A and the time t3 in FIG. 6B are small values, and the center of gravity value calculated from such values is a small value. Since there is a possibility that the actual situation is not accurately represented, it is treated as noise in FIGS. 6A and 6B.

The tendency common to FIGS. 6 (a) and 6 (b) is that the sensor value and the total sensor value for each position decrease with the passage of time. By detecting this tendency, it can be determined that the operation of separating the lip L from the mouthpiece 10 has started.

On the other hand, in FIG. 6B, the peak of the sensor value is held at the position P7 at each time, whereas in FIG. 6A, the peak of the sensor value is at the position P7 at the time t1 and the time. At t2, the transition is at position P6, and at time t3, the transition is at position P5. Similarly, in FIG. 6B, the center of gravity value does not substantially fluctuate as “74” at time t1 and “73” at time t2, whereas in FIG. 6A, the center of gravity value is , "74" at time t1, "69" at time t2, "59" at time t3, and so on, moving toward the tip side of the lead 11. It is considered that such a difference in the change in the center of gravity value is effective in distinguishing the movements of the two types of separation of the lip L. Hereinafter, it will be illustrated with reference to FIGS. 7 and 8.

FIG. 7 (a) is a graph showing the time transition of the sensor value for each position “P1” to “P10” in FIG. 6 (a), and FIG. 7 (b) is a graph showing the time transition of the sensor value in each position “P1” to “P10”. It is a graph which shows the time transition of the sensor value for every "P10" from "". With the position P on the horizontal axis and the sensor value on the vertical axis, the sensor values for each position from time t1 to t4 (or t3) are compared. From these graphs as well, the difference in the amount of decrease in the sensor value and the difference in the peak position due to the difference in the operation of releasing the lip L can be grasped.

8 (a) is a graph showing the relationship between the center of gravity value and the total sensor value in FIG. 6 (a), and FIG. 8 (b) is the same as FIG. 8 (a) corresponding to FIG. 6 (b). It is a graph of. In FIGS. 8A and 8B, the time t is on the horizontal axis, and the total of the center of gravity value and the sensor value is on the first and second vertical axes.

In FIG. 8A, the total sensor values decrease by D11 and D12, respectively, between the times t1 and t2 and between the times t2 and t3. Further, in FIG. 8B, the total sensor value decreases by D13 between the times t1 and t2. Therefore, by detecting the amount of decrease between the total sensor value of the previous time (for example, time t1) and the total sensor value of this time (for example, time t2), the performer P separates the lower lip of the lip L from the mouthpiece 10. It can be grasped that it is the first timing when the operation is started. In the present embodiment, in the CPU 5 functioning as the processing unit, when the amount of decrease between the total sensor values of the previous time and the total sensor values of the current time is equal to or greater than a predetermined amount (threshold value), the lower lip of the lip L starts from the lead 11. It is determined that it is the first timing to start leaving.

In FIGS. 8A and 8B, the center of gravity value and the total sensor value are different types of data, and it is meaningless to simply compare the two values. However, it is possible to determine whether or not the two forms of change tend to be the same when some movement, for example, the movement of separating the lower lip from the lead, is performed. However, since the scales of both values do not match, it is not possible to simply judge whether or not the forms of change of both tend to be the same as they are. Therefore, in the present embodiment, the scales of at least one value are corrected so as to match the scales of the other value, so that the two can be compared. The correction method is, for example, addition / subtraction or multiplication / division of a predetermined value. In the present embodiment, for example, by multiplying the center of gravity value by 20 or reducing the total sensor value to 1/20 (divide by 20), the form of change between the center of gravity value and the total sensor value tends to be the same. It is possible to compare whether or not it is in. The magnification may be appropriately set so as to facilitate the above-mentioned comparison.

Therefore, when the corrected center of gravity value and the total sensor value are compared for each time, in FIG. 8A, there is a difference of D21 at time t2 and a difference of D22 at time t3. Similarly, in FIG. 8B, there is a difference in D23 at time t2. Further, since D23> D21 and D22, the difference between the corrected center of gravity value and the total sensor value is determined for each time to distinguish between the two types of lip L lower lip movement modes. be able to. That is, when the difference is smaller than the predetermined threshold value, it is determined that the first form starts the operation of releasing the lower lip of the lip L while pulling the mouthpiece 10, and when the difference is larger than the threshold value, the lip L It may be determined that the action of vertically separating the lower lip from the mouthpiece 10 has started.

[Operation of electronic musical instruments]
The operation of the electronic musical instrument 100 having the above-described configuration will be described with reference to FIGS. 9 and 10. FIG. 9 is a flowchart showing the main routine. FIG. 10 is a flowchart showing a processing flow of the lower lip position / tongue detection unit.

(Main routine)
The main operation of the electronic musical instrument 100 or the control method of the electronic musical instrument 100 will be described with reference to FIG.

When the power is turned on, the initialization process is performed in step ST11. Such processing is, for example, initialization of various settings.

Next, in step ST12, the processing of the lip detection unit 3 and the tongue detection unit 4 is performed. This step is a process according to the contact state of the lip L and the tongue with the lead 11 described above, and will be described in detail later in relation to FIG.

Then, in step ST13, the process of the breath pressure detection unit 2 is performed. Such a step is the process of detecting the breath pressure by breathing as described above.

Next, in step ST14, the key switch process is performed. In the key switch process, the CPU 5 generates a key code indicating the pitch of the musical tone according to the operation information of the operator 1, and supplies the key code to the sound source unit 8.

Then, in step ST15, the pronunciation process is performed. In such processing, the sound source unit 8 operates the sound system 9 based on the received key code or the like.

After step ST15, other necessary processing is performed in step ST16, a series of processing procedures are completed, and steps ST12 to ST16 described above are repeated again.

(Lower lip position / processing of tongue detection part)
With reference to FIG. 10, the processing of the lower lip position / tongue detection portion in the above step ST12 will be described in detail. Such processing is performed by the CPU 5 as a control means.

First, in step ST21, the sensor values (output values) of the touch sensors S20 to S29 are acquired.

Next, in step ST22, the total of the sensor values is calculated and compared with the total of the previous sensor values. As a result of comparison, the total sensor value of this time (third timing) has decreased from the total sensor value of the previous time (fourth timing), and the amount of decrease (for example, in FIGS. 8A and 8B). When it is determined that D11, D12, D13) is larger than the threshold value th1, it is determined that it is the first timing when the lip L starts the operation of moving away from the lead 11, and the procedure proceeds to step ST23. On the other hand, if the total sensor value of this time increases or is the same as the total sensor value of the previous time, or the amount of decrease is equal to or less than the threshold value th1, the process returns to the main routine.

In step ST23, the center of gravity value on the lead 11 of the lip L calculated from the sensor values of the touch sensors S20 to S29 and the total sensor value calculated in step ST22 are corrected by a predetermined value, that is, the scales of both values are matched. After performing the processing to make it, the difference between the two values is taken.

Then, in step ST24, such a difference (for example, D21, D22, D23 in FIGS. 8A and 8B) is compared with the threshold value th2. As a result of the comparison, if it is determined that the difference is equal to or less than the threshold value th2, the process proceeds to step ST25. On the other hand, if it is determined that the difference is larger than the threshold value th2, the process proceeds to step ST27.

In step ST25, a flag (for example, “0”) indicating the first form in which the operation of releasing the lower lip of the lip L while pulling the mouthpiece 10 is started is recorded in the ROM 6. The CPU 5 checks the above flag in step ST14 or ST15 described above, and if it is determined that "0" is input to this flag, for example, it is generated as the lower lip gradually separates from the mouthpiece 10. Perform processing that gradually reduces the volume of the musical sound.

Then, in step ST26, the lip position, that is, the center of gravity value of the lip L on the lead 11 is fixed to the current value. Such fixation of the lip position is maintained until it is determined that the lower lip of the lip L is once separated from the lead 11 and then touched the lead 11 again. That is, from the first timing at which the lip L starts the operation of leaving the lead 11 to at least the second timing at which the lip L completes the operation of leaving the lead 11, the lip L with respect to the lead 11 at the first timing. The contact position of the lip L is set (fixed) as the actual contact position of the lip L. By such a process, even if the lower lip of the lip L is released while pulling the mouthpiece 10, it is possible to prevent the performer P from unintentionally changing the effect with respect to the musical sound being generated. It becomes.

The term "until it is determined that the lower lip of the lip L has come into contact with the lead 11 again" does not mean that the lower lip physically separates from the lead 11 and comes into contact with the lead 11 again. Based on the outputs from the touch sensors S20 to S29, for example, it is determined by the state that the total sensor value of this time is increased to some extent or more as compared with the total sensor value of the previous time.

On the other hand, in step ST27, a flag (for example, “1”) indicating that the operation of vertically separating the lower lip of the lip L from the mouthpiece 10 is started is recorded in the ROM 6. The CPU 5 checks the above flag in step ST14 or ST15 described above, and when it is determined that "1" is input, the CPU 5 determines the volume of the musical tone being pronounced at the timing when the lower lip is vertically separated from the mouthpiece 10. Performs a process to reduce the value sharply.

When the series of procedures is completed in this way, the process returns to the main routine. For the performer P who intentionally uses the effect generated when the lip L is separated from the lead 11, the setting is set so as not to perform the processing according to the relationship between the above-mentioned center of gravity value and the total sensor value. It may be provided.

As described above, in the present embodiment, when it is detected that the operation of releasing the lower lip of the lip L while pulling the mouthpiece 10 is started, the lip position is fixed. Therefore, it is possible to prevent an unintended change in the effect (for example, echo, wow wow effect, etc.) of the performer P, which may be caused by the movement of the lower lip.

Although the electronic musical instrument of the present invention has been described above based on the specific embodiment, the present invention is not limited to the above-mentioned specific embodiment.
In the above, the difference between the center of gravity position (center of gravity value) and the total value is used by using the total value of the center of gravity position and the sensor information value between this time (third timing) and the previous time (fourth timing). As a change, when the first condition that the change is small is satisfied, it is determined that it is the first form in which the action of releasing the lower lip of the lip L while pulling the mouthpiece 10 is started.

However, as can be seen by comparing FIGS. 8 (a) and 8 (b), when the operation of pulling the mouthpiece 10 and releasing the lower lip of the lip L is started (see FIG. 8 (a)), and when it is not (see FIG. 8 (a)). In FIG. 8B), there is a difference in whether or not the change in the position of the center of gravity (center of gravity value) is small, and whether or not the change in the total value of the sensor information values (total sensor value) is small.

That is, when the operation of releasing the lower lip of the lip L while pulling the mouthpiece 10 is started (see FIG. 8A), it is between this time (third timing) and the previous time (fourth timing). Since the change in the position of the center of gravity tends to be small and the change in the total value of the sensor information tends to be small, the first condition that both the change in the position of the center of gravity and the change in the total value of the sensor information are small. If the condition is satisfied, it may be determined that this is the first mode in which the action of releasing the lower lip of the lip L while pulling the mouthpiece 10 is started.

Therefore, the first form of change is between the total value of the center of gravity position and the sensor information value determined at the third timing and the total value of the center of gravity position and the sensor information value determined at the fourth timing. When the condition of the above condition is satisfied, it may be determined that it is the first form in which the operation of releasing the lower lip of the lip L while pulling the mouthpiece 10 is started.

As described above, the present invention is not limited to specific embodiments, and the technical scope of the present invention includes various modifications and improvements within the range in which the object of the present invention is achieved. It is clear to those skilled in the art from the description of the scope of claims.

The inventions described in the claims originally attached to the application of this application are added below. The item number of the claim described in the appendix is as per the scope of the patent claim originally attached to the application of this application.
<Claim 1>
A position-fixing process for determining the contact position of the lip on the lead based on the sensor information from the lip detection sensor that detects the contact state of the lip on the lead.
A musical tone control process that controls a musical tone generated by the sound source unit corresponding to the contact position determined by the position determination process, and a musical tone control process.
Based on the sensor information, a detection process for detecting that the lip has started to move away from the lead, and
When it is determined that the release form of the lip is the first form based on the sensor information, from the first timing to at least the second timing when the operation of the lip separating from the lead is completed. , And the process of setting the contact position at the first timing as the actual contact position of the lip.
A musical tone control device characterized by having a processing unit for executing the above.
<Claim 2>
The processing unit determines that the timing at which the lip has started the operation of moving away from the lead is determined as the first timing, and the timing at which the processing unit determines that the operation of separating the lip from the lead has been completed is the second timing. Judging as timing,
The first aspect of claim 1, wherein the contact position at the first timing is set as the actual contact position of the lip from the first timing to at least the second timing. Musical tone control device.
<Claim 3>
The musical sound control device according to claim 1 or 2, wherein the lip detection sensor includes a plurality of sensing units, and the sensor information is sensor information obtained from each of the plurality of sensing units.
<Claim 4>
In the detection process, the sensing in which the total value of the sensor information of each of the sensing units acquired at the third timing is acquired at the fourth timing, which is the timing before the third timing. The third aspect of claim 3, wherein when it is detected that the total value of the sensor information of each unit is less than the first value, the start of the operation of the lip moving away from the lead is detected. Musical tone control device.
<Claim 5>
The position of the center of gravity of the lip on the lead is obtained from the value of the sensor information obtained from each of the sensing units.
The change between the total value of the center of gravity position and the sensor information determined at the third timing and the total value of the center of gravity position and the sensor information determined at the fourth timing. The musical sound control device according to claim 4, wherein when the form satisfies the first condition, it is determined that the form is the first form.
<Claim 6>
The musical sound control device according to any one of claims 1 to 5, wherein the position-determining process sets the position of the center of gravity of the contact area of the lip on the lead as the contact position.
<Claim 7>
Multiple keys that are operated to determine the pitch,
A lead with a lip detection sensor that detects the contact state of the lip,
A sound source that generates musical tones,
The musical tone control device according to any one of claims 1 to 6.
An electronic musical instrument characterized by being equipped with.
<Claim 8>
It is a control method of a musical tone control device.
A step of determining the contact position of the lip on the lead based on the sensor information from the lip detection sensor that detects the contact state of the lip on the lead.
A step of controlling a musical sound generated by the sound source unit corresponding to the determined contact position, and
Based on the sensor information, a step of detecting that the lip has started to move away from the lead, and
When it is determined that the release form of the lip is the first form based on the sensor information, from the first timing to at least the second timing when the operation of the lip separating from the lead is completed. , And the step of setting the contact position at the first timing as the actual contact position of the lip.
A control method for a musical tone control device, which comprises.
<Claim 9>
In the processing section of the musical tone control device,
A position-fixing process for determining the contact position of the lip on the lead based on the sensor information from the lip detection sensor that detects the contact state of the lip on the lead.
A musical tone control process that controls a musical tone generated by the sound source unit corresponding to the contact position determined by the position determination process, and a musical tone control process.
Based on the sensor information, a detection process for detecting that the lip has started to move away from the lead, and
When it is determined that the release form of the lip is the first form based on the sensor information, from the first timing to at least the second timing when the operation of the lip separating from the lead is completed. , And the process of setting the contact position at the first timing as the actual contact position of the lip.
A program of a musical tone control device characterized by realizing.

100 Electronic musical instrument 100a Tube unit 1 Operator 2 Breath pressure detection unit 3 Lip detection unit 4 Tongue detection unit 5 CPU
6 ROM
7 RAM
8 Sound source 9 Sound system 9a Bus 10 Mouthpiece 10a Mouthpiece body 11 Lead 12 Fixing bracket 13 Openings 40, 30-39 Electrodes E1 Upper front teeth E2 Lower front teeth L Lip P Players S10, S20 to S29 Touch sensor

Claims (12)

A first musical tone control process that performs the first control on the musical tone generated by the sound source unit based on the sensor information from the lip detection sensor that detects the contact state of the lip on the lead.
Based on the sensor information, a detection process for detecting the form and timing of the action of the lip moving away from the lead, and
A second musical tone control process that performs a second control on the musical tone generated by the sound source unit based on the form and the timing detected by the detection process.
A musical tone control device having a processing unit for executing the above. The first control by the first musical tone control process is a control for changing the state of the musical tone generated by the sound source unit.
The musical tone control device according to claim 1, wherein the second control by the second musical tone control process is a control for suppressing a state change of the musical tone by the first control. When the processing unit determines that the form detected by the detection process is the first form as the second musical tone control process, at least the lip is separated from the lead from the first timing. The musical tone control device according to claim 2, wherein the second control for suppressing a change in the state of the musical tone due to the first control is performed until the second timing at which the above is completed. The processing unit further executes a position-determining process for determining a lip position, which is an instruction position on the lead by the lip, based on the sensor information.
The first control according to any one of claims 1 to 3, wherein the processing unit performs the first control for changing the state of the musical sound generated by the sound source unit based on the lip position as the first musical sound control process. Musical tone control device. When the processing unit determines that the form detected by the detection process is the first form as the second musical tone control process, at least the lip is separated from the lead from the first timing. The second control that holds the lip position at the first timing until the second timing at which the above is completed, and suppresses the state change of the musical tone by the first control based on the held lip position. The musical tone control device according to claim 4.

When the processing unit determines that the form detected by the detection process is the first form as the second musical tone control process, at least from the timing when the lip starts the operation of separating from the lead. The musical tone control device according to claim 4, wherein the second control for suppressing a change in the state of the musical tone due to the first control is performed until the timing at which the lip separates from the lead is completed. The musical sound control device according to any one of claims 1 to 6, wherein the lip detection sensor includes a plurality of sensing units, and the sensor information is sensor information obtained from each of the plurality of sensing units. When the detection process detects that the amount of decrease in the total value of the sensor information values of each of the sensing units is larger than the first value, it is determined that the lip has started the operation of moving away from the lead. The musical sound control device according to claim 7. As the second musical tone control process, the processing unit obtains the position of the center of gravity of the lip on the lead from the value of the sensor information obtained from each of the sensing units, and forms a change in the position of the center of gravity and the total value. The musical tone control device according to claim 8, wherein the second control is performed based on the above. Multiple keys that are operated to determine the pitch,
A lead including the lip detection sensor that detects the contact state of the lip,
The sound source unit that generates musical tones,
The musical tone control device according to any one of claims 1 to 9.
An electronic musical instrument characterized by being equipped with. It is a control method of a musical tone control device.
Based on the sensor information from the lip detection sensor that detects the contact state of the lip on the lead, the step of performing the first control on the musical sound generated by the sound source unit, and
Based on the sensor information, a step of detecting the form and timing of the action of the lip moving away from the lead, and
A step of performing a second control on a musical tone generated by the sound source unit based on the detected form and the timing.
A control method for a musical tone control device, which comprises. In the processing section of the musical tone control device,
The first musical tone control process that performs the first control on the musical tone generated by the sound source unit based on the sensor information from the lip detection sensor that detects the contact state of the lip on the lead.
Based on the sensor information, a detection process for detecting the form and timing of the action of the lip moving away from the lead, and
A second musical tone control process that performs a second control on the musical tone generated by the sound source unit based on the form and the timing detected by the detection process.
A program of a musical tone control device that executes.

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