JP2017173651A - Musical sound control device, electronic musical instrument, musical sound control device control method, and musical sound control device program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a musical sound control device capable of preventing a sound not intended by a performer from being generated by an effect generated according to a lip position. A tone control device of the present invention is a position determination process for determining a contact position of a lip on a lead based on sensor information from a lip detection sensor for detecting a contact state of a lip on the lead, and a position determination. Musical sound control processing for controlling the musical sound generated by the sound source unit corresponding to the contact position determined in the processing, and detection processing for detecting that the lip has started to move away from the lead based on the sensor information. When it is determined that the lip leaving form is the first form based on the sensor information, from the first timing to at least the second timing at which the lip completes the operation of leaving the lead, the first And a processing unit that executes a process of setting the contact position at the timing of as the actual contact position of the lip. [Selection diagram] Fig. 10

Description

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

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

JP 7-72853 A

  There are several ways to apply effects. For example, it is known that the applied effect changes depending on the position of the lower lip on the lead (lip position). By changing the effect that is applied, the performance can be widened.

By the way, it is known that there are the following two types of movements of the lower lip when the performer moves his / her mouth away from the mouthpiece, for example, to stop sound generation.
(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) The lower lip is released vertically. In other words, the lower lip moves away from the mouthpiece so as to leave directly below without moving toward the tip of the lead.

  The performer often performs the above operation (a). Since this operation is accompanied by movement of the lip position, as described above, if the effect applied to the sound changes according to the lip position, the operation (a) is given. The effect will cause the player's unintended changes. The occurrence of such an effect has little effect when the performance ends with a weak sound or a decaying sound, and is not a problem. However, if a strong sound or a continuous sound is produced at the end of the performance, the change in this effect is It will stand out as a harsh sound.

  The present invention has been made in view of such circumstances, and an electronic musical instrument and an electronic musical instrument that can prevent an unpleasant sound unintended by the performer from being generated by an effect that changes in accordance with the lip position. It is an object to provide a control method and a program for an electronic musical instrument.

In order to achieve the above object, the present invention is grasped by the following configuration.
(1) The musical tone control apparatus according to the present invention includes a position determination process for determining a contact position of the lip on the lead based on sensor information from a lip detection sensor that detects a contact state of the lip on the lead; A musical sound control process for controlling a musical sound generated by a sound source unit corresponding to the contact position determined in the position determination process, and an operation for moving the lip away from the lead based on the sensor information. When it is determined that the lip separation form is the first form based on the detection process and the sensor information, at least the lip separation operation from the lead is completed from the first timing. And a process of setting the contact position at the first timing as the actual contact position of the lip until the second timing. With a processing unit.

(2) An electronic musical instrument of the present invention includes a plurality of keys operated to determine a pitch, a lead including a lip detection sensor that detects a lip contact state, a sound source unit that generates a musical sound, and the above (1 And a musical tone control device having a configuration of

(3) The control method of the musical tone control device of the present invention includes a step of determining a contact position of the lip on the lead based on sensor information from a lip detection sensor that detects a contact state of the lip on the lead; A step of controlling a musical sound generated by a sound source unit corresponding to the determined contact position, and a step of detecting that the lip starts to move away from the lead based on the sensor information; Based on the sensor information, when it is determined that the lip separation form is the first form, the period from the first timing to at least the second timing at which the lip completes the operation of separating the lip. And setting the contact position at the first timing as the actual contact position of the lip.

(4) The program of the musical tone control device according to the present invention is a program for contacting the lip on the lead based on sensor information from a lip detection sensor that detects a lip contact state on the lead. Based on a position determination process for determining a position, a tone control process for controlling a tone generated by a sound source unit corresponding to the contact position determined in the position determination process, and the sensor information, the lip is When it is determined that the lip separation form is the first form based on the detection process for detecting the start of the movement away from the lead and the sensor information, at least the first timing Until the second timing when the lip completes the operation of moving away from the lead, the contact position at the first timing is determined as the actual contact of the lip. Implementing a process of setting the position.

  According to the present invention, when an operation of separating the lower lip from the lead is performed, it is possible to prevent a sound unintended by the performer from being generated by an effect that changes the form of application according to the lip position.

(A) is a top view of the electronic musical instrument which concerns on embodiment of this invention, (b) is a side view of an electronic musical instrument. It is a block diagram which shows the function structure of an electronic musical instrument. (A) is sectional drawing which shows a mouthpiece, (b) is a bottom view which shows a mouthpiece. It is a figure which shows the contact state of a player's oral cavity and a mouthpiece. It is a figure which shows typically the sensing part on a lead | read | reed. (A) is a table showing an example of the sensor value for each position on the lead when the mouthpiece is pulled away, the total of the sensor values, and the time transition at the center of gravity, and (b) is the vertical separation of the lower lip from the mouthpiece. It is the table | surface similar to Fig.6 (a) at the time of doing. (A) is a graph which shows the time transition of the sensor value for every position in Fig.6 (a), (b) is a graph which shows the time transition of the sensor value for every position in FIG.6 (b). (A) is a graph which shows the relationship between the gravity center position and sensor value total in FIG. 6 (a), (b) is a graph which shows the relationship between the gravity center position and sensor value total in FIG.6 (b). It is a flowchart which shows a main routine. It is a flowchart which shows the flow of a process of a lower lip position / tongue detection part.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings. The electronic musical instrument according to the present embodiment is an electronic musical instrument that represents a performance in accordance with a performance method (for example, pitch bend or vibrato) of an acoustic wind instrument that 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 imitating other wind instruments such as a clarinet. In addition, the same code | symbol is attached | subjected to the same element through the whole description of embodiment.

[Configuration of electronic musical instrument]
(Basic configuration of electronic musical instrument)
A 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, an electronic musical instrument 100 has an external shape imitating a saxophone that is an acoustic wind instrument, and includes a tubular body 100a, an operator 1, a sound system 9, and a mouthpiece. 10.
The tube part 100a is a housing part of a main body having a shape simulating a tube part of a saxophone.

  The operation element 1 is an operation unit that is arranged on the tube unit 100a and is operated by a player P (user) with a finger. The operation element 1 includes a performance key for determining the pitch, a setting key for setting a function for changing the pitch according to the key of the music, a function for finely adjusting the pitch, and the like. The operation information is output to the CPU 5 described later.

  The mouthpiece 10 is connected to the tube part 100a, and the player P operates with the oral cavity. A lead 11 is attached to the mouthpiece 10 as will be described in detail later.

  The sound system 9 has a speaker or the like and outputs a musical sound. More specifically, the sound system 9 performs signal amplification or the like on the musical tone signal input from the sound source unit 8 and outputs the musical tone as a musical tone from a built-in speaker.

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

  The breath pressure detection unit 2 is a sensor that detects the pressure (breath pressure) of the breath blown into the mouthpiece 10 from the player P and outputs the breath pressure information to the CPU 5. The sound source unit 8 is a circuit that generates musical sounds, 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 instrument)
A 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-described operating element 1, the above-described breath pressure detecting unit 2, the lip detecting unit 3, the tongue detecting unit 4, the CPU 5, the ROM 6, the RAM 7, and the above-mentioned. The sound source unit 8 and the sound system 9 described above are provided. The above components of the electronic musical instrument 100 excluding 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 that is provided on the lead 11 and detects contact of the lip (lower lip) L of the player P. The lip detection unit 3 outputs the capacitance according to the contact position and the contact area of the lip L in the touch sensor to the CPU 5 as 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 capacitance type touch sensor that is provided on the lead 11 and detects the contact of the player P with a tongue. The tongue detection unit 4 outputs a capacitance according to the contact area of the tongue in the touch sensor to the CPU 5 as detection information of the tongue.

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

  More specifically, the CPU 5 includes pitch information input from the operation element 1, breath pressure information input from the breath pressure detection unit 2, detection information of the lip L input from the lip detection unit 3, and Based on the tongue detection information input from the tongue detector 4, the tone generator 8 is instructed to generate a musical tone.

  For example, the CPU 5 sets the pitch of the musical sound based on the pitch information input from the operation element 1. Further, the CPU 5 sets the sound volume based on the breath pressure information input from the breath pressure detector 2. Further, the CPU 5 controls the effect to be given to the generated musical sound according to the detection information of the lip L input from the lip detection unit 3. The CPU 5 also sets the generation form of the tongue sound based on the contact detection information of the tongue (tongue) input from the tongue detector 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 operation element 1 has been operated at a predetermined cycle, and performs sound generation processing corresponding to the operation every time it is determined that the operation element 1 has been operated. At that time, the CPU 5 executes a predetermined process to be described later based on the output value of the lip detector 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, and generates a musical sound and outputs a musical sound signal to the sound system 9 according to a musical sound generation instruction (musical sound control) from the CPU 5.

(Details of mouthpiece)
With reference to FIG.3 and FIG.4, the structure of the mouthpiece 10 is demonstrated. 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, along the axial direction of the mouthpiece 10, the opening 13 side is referred to as “tip”, and the tubular body portion 100 a side is referred to as “heel”.

  As shown in FIGS. 3A and 3B, the mouthpiece 10 includes a mouthpiece body 10 a, a lead 11, and a fixture 12. The mouthpiece main body 10a is a main body part of the mouthpiece 10, and has an opening 13 for the player P to breathe. The lead 11 is provided below the mouthpiece body 10a, that is, corresponding to the lead position of the acoustic wind instrument. The fixture 12 is a fixture for attaching the lead 11 to the mouthpiece body 10a.

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

  Among these, the electrode unit 40 is a sensing unit of the capacitive touch sensor S <b> 10 constituting the tongue detection unit 4. The electrode units 30 to 39 are sensing units of the capacitive 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 player P will be described with reference to FIG. FIG. 4 is a view showing a contact state between the mouth of the player P and the mouthpiece 10. As shown in FIG. 4, when the electronic musical instrument 100 is played, the performer P touches the lead 11 by placing the upper front tooth E <b> 1 on the upper part of the mouthpiece body 10 a, wrapping the lower front tooth E <b> 2 with the lower lip L. . In this way, the mouthpiece 10 is held by the upper front teeth E1 and the lip L.

  The tongue inside the oral cavity at the time of performance is either a tongue T1 (solid line) in a state where the lead 11 is touched or a tongue T2 (a broken line) where the lead 11 is not touched, depending on the playing style. Here, it is known that the player P usually makes the tongue contact the lead 11 with the intention of suppressing the pronunciation of the musical instrument. In order to correspond to the performance of the player P, the touch sensor S10 described above detects the contact state of the tongue with the electrode unit 40. For example, a tan T1 indicated by a solid line in FIG. 4 indicates a state in contact with the lead 11, and a tan T2 indicated by a one-dot chain line in FIG. Then, the touch sensor S10 outputs detection information to the CPU 5.

  Further, the player P usually makes the lip L contact the mouthpiece 10 during sound generation. In this case, the player P may change the sound by operating the contact position and the contact area (contact pressure) of the lip L. Corresponding to such a playing method, the touch sensors S20 to S29 detect the contact state of the lip L with respect to the electrode portions 30 to 39. And touch sensor S20-S29 outputs each detection information with respect to CPU5.

  The CPU 5 calculates the contact position (center of gravity position) of the lip L on the lead 11 according to 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.

  In addition, 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 specification.

(Contact position of lip to lead)
In the lip detection unit 3 having the above-described configuration, the lip L often contacts over 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 as one point. A method for calculating the position of the center of gravity of the lip L on the lead 11 will be described with reference to FIG.

  As described with reference to FIG. 3B, the plurality of rectangular electrode portions 40 and 30 to 39 are aligned along the extending direction or the longitudinal direction of the lead 11. The electrode part 40 of the touch sensor S10 that constitutes 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 that constitute the lip detection part 3 so as to be adjacent to the electrode part 40. The parts 30 to 39 are arranged at equal intervals toward the opposite end. FIG. 5 is a diagram schematically showing the electrode portions 40 and 30 to 39 on the lead 11. In FIG. 5, the positions of the electrode portions 30 to 39 are shown as electrodes in order to make the following explanation easy to understand. It represents by P1-P10 from the part 40 side, and number "1"-"10" are provided, respectively.

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。 And the contact position (gravity center position xG) of the lip L to 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 equation 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, the lip L The center of gravity position xG of

Is calculated.

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

(Distinction of how to separate the lower lip from the mouthpiece based on the total sensor value and the center of gravity)
Here, with reference to FIG. 6 to FIG. 8, the mode of the separation operation of the lower lip L from the mouthpiece 10 is determined based on the total output values of the touch sensors S20 to S29 and the centroid value of the lip L. An example of the technique to perform is demonstrated.

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

  Here, the sensor value is an integer from 0 to 255, and therefore the sum of the 10 sensor values takes a value from 0 to 2550. Further, the centroid value is expressed by an integer from 0 to 127 as described above. In this embodiment, the sensor value and the sensor value total at time t4 in FIG. 6A and time t3 in FIG. 6B are small values, and the centroid value calculated from these values is Since there is a possibility that the actual state is not accurately represented, in FIGS. 6A and 6B, it is processed as noise.

  The tendency common to FIG. 6A and FIG. 6B is that the sensor value and the sensor value total 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 almost the position P7 at each time, whereas in FIG. 6A, the peak of the sensor value is at the position P7 at time t1. The transition is at position P6 at t2 and at position P5 at time t3. Similarly, in FIG. 6B, the centroid value does not substantially change like “74” at time t1 and “73” at time t2, whereas in FIG. 6A, the centroid value is The lead 11 has moved to the tip side like “74” at time t1, “69” at time t2, and “59” at time t3. It is considered that such a difference in the change in the center of gravity value is effective in distinguishing the two types of movement of the lip L. This is illustrated in FIGS. 7 and 8 below.

  FIG. 7A is a graph showing the time transition of the sensor value for each of the positions “P1” to “P10” in FIG. 6A, and FIG. 7B is the position “P1” in FIG. It is a graph which shows the time transition of the sensor value for every "P10". Taking 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. Also from these graphs, the difference in the sensor value decrease amount and the peak position due to the difference in the movement of the lip L can be grasped.

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

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

  In FIGS. 8A and 8B, the centroid value and the total sensor value are different types of data, and it is meaningless to simply compare the values of both. However, it is possible to grasp whether or not the form of change of both of them has the same tendency when some kind of operation, for example, an operation of separating the lower lip from the lead is performed. However, since the scales of the two values do not match, it is not possible to simply determine whether or not the two changes have the same tendency. For this reason, in the present embodiment, the two values can be compared by correcting so that the scale of at least one value matches the scale of the other value. The correction method is, for example, addition / subtraction or multiplication / division of a predetermined value. In this embodiment, for example, the centroid value is multiplied by 20 or the total sensor value is reduced to 1/20 (divided by 20), so that the form of change between the centroid value and the total sensor value tends to be the same. It is possible to compare whether or not. Note that the magnification may be set as appropriate to facilitate the above-described comparison.

  Therefore, comparing the corrected gravity center value and the total sensor value for each time, in FIG. 8A, there is a difference of D21 at time t2, and there is a difference of D22 at time t3. Similarly, in FIG. 8B, there is a difference of D23 at time t2. Further, since D23> D21 and D22, the operation mode of separating the lower lip of the two types of lips L is distinguished by determining the difference between the corrected gravity center value and the total sensor value for each time. be able to. That is, when the difference is smaller than a predetermined threshold value, it is determined as the first form in which the operation of releasing the lower lip of the lip L while pulling the mouthpiece 10 is started, and when the difference is larger than the threshold value, What is necessary is just to discriminate | determine that the operation | movement which releases | separates a lower lip from the mouthpiece 10 perpendicularly was started.

[Operation of electronic musical instrument]
The operation of the electronic musical instrument 100 having the above-described configuration will be described with reference to FIGS. 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)
With reference to FIG. 9, the main operation | movement of the electronic musical instrument 100 thru | or the control method of the electronic musical instrument 100 is demonstrated.

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

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

  In step ST13, the processing of the breath pressure detection unit 2 is performed. This step is the above-described breath pressure detection process by breath blowing.

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

  In step ST15, sound generation processing 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, the entire processing procedure ends, and the above-described steps ST12 to ST16 are repeated again.

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

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

  Next, in step ST22, the total of sensor values is calculated and compared with the previous total of sensor values. As a result of comparison, the current sensor value total (third timing) has decreased from the previous (fourth timing) sensor value total, and the amount of decrease (for example, in FIGS. 8A and 8B). If it is determined that D11, D12, and D13) are greater than the threshold th1, it is determined as the first timing at which the lip L starts to move away from the lead 11, and the procedure proceeds to step ST23. On the other hand, if the current sensor value total increases or is the same as the previous sensor value total, or the decrease amount is equal to or less than the threshold 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 sum of the sensor values calculated in step ST22 are matched with each other, that is, the scales of both values coincide. Take the difference between the two values.

  In step ST24, the difference (for example, D21, D22, D23 in FIGS. 8A and 8B) is compared with the threshold th2. As a result of the comparison, if it is determined that the difference is equal to or less than the threshold th2, the process proceeds to step ST25. On the other hand, if it is determined that the difference is greater than the threshold 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. When the CPU 5 checks the flag in step ST14 or ST15 described above and determines that “0” is input, for example, the lower lip is generated as the mouthpiece 10 gradually moves away. Processing is performed so that the tone volume gradually decreases.

  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 fixing of the lip position is maintained until it is determined that the lower lip of the lip L has once separated from the lead 11 and then contacted the lead 11 again. That is, the lip L with respect to the lead 11 at the first timing is from the first timing at which the lip L starts to move away from the lead 11 to the second timing at least when the lip L completes the movement away from the lead 11. Is set (fixed) as the actual lip L contact position. With this process, even if the lower lip of the lip L is released while the mouthpiece 10 is pulled, it is possible to prevent the player P from unintentionally changing the effect on the generated musical sound. It becomes.

  Here, “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 leaves the lead 11 and comes into contact again. However, it is determined based on the output from the touch sensors S20 to S29, for example, based on a state in which the current sensor value total has increased to some extent as compared to the previous sensor value total.

  On the other hand, in step ST27, a flag (for example, “1”) indicating that the operation of vertically releasing the lower lip of the lip L from the mouthpiece 10 is recorded in the ROM 6. When the CPU 5 checks the flag in step ST14 or ST15 described above and determines that “1” is input, the CPU 5 determines the volume of the musical sound that is generated in accordance with the timing of releasing the lower lip vertically from the mouthpiece 10. A process of rapidly decreasing is performed.

  When a series of procedures is thus completed, the process returns to the main routine. For the player P who intentionally uses the effect generated when the lip L is separated from the lead 11, a setting is made so as not to perform the processing according to the relationship between the center of gravity value and the total sensor value. It may be provided.

  As described above, in this embodiment, when it is detected that the operation of releasing the lower lip of the lip L while starting to pull the mouthpiece 10 is started, the lip position is fixed. Therefore, it is possible to prevent a change in an effect (for example, an echo or a wah-wah effect) unintended by the player P, which can be caused by the movement of the lower lip.

As mentioned above, although the electronic musical instrument of the present invention has been described based on the specific embodiment, the present invention is not limited to the above specific embodiment.
In the above, the difference between the centroid position (centroid value) and the total value is calculated using the total value of the centroid position and the sensor information value between the current 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 the first mode starts the operation of releasing the lower lip of the lip L while pulling the mouthpiece 10.

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

  In other words, when starting the operation of releasing the lower lip of the lip L while pulling the mouthpiece 10 (see FIG. 8A), the interval between the current time (third timing) and the previous time (fourth timing) is used. The first condition that both the change in the centroid position and the change in the total value of the sensor information are small because the change in the centroid position is small and the change in the total value of the sensor information values also tends to be small. When satisfy | filling, you may determine with it being the 1st form which started the operation | movement which releases the lower lip of the lip L, pulling the mouthpiece 10. FIG.

  Therefore, the form of the change between the total value of the centroid position and sensor information value determined at the third timing and the total value of the centroid position and sensor information value determined at the fourth timing is the first. If the above condition is satisfied, it may be determined that the first mode is started to move the lower lip of the lip L while pulling the mouthpiece 10.

  As described above, the present invention is not limited to a specific embodiment, and the technical scope of the present invention includes various modifications and improvements within the scope of achieving the object of the present invention. And that will be apparent to those skilled in the art from the claims.

The invention described in the scope of claims attached to the application of this application will be added below. The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.
<Claim 1>
A position determination process for determining a contact position of the lip on the lead based on sensor information from a lip detection sensor for detecting a contact state of the lip on the lead;
A musical sound control process for controlling a musical sound generated by a sound source unit corresponding to the contact position determined in the position determination process;
Based on the sensor information, a detection process for detecting that the lip has started to move away from the lead; and
Based on the sensor information, when it is determined that the lip separation form is the first form, the period from the first timing to at least the second timing at which the lip completes the operation of separating the lip. A process of setting the contact position at the first timing as the actual contact position of the lip;
A musical tone control apparatus comprising a processing unit for executing
<Claim 2>
The processing unit determines, as the first timing, a timing at which the lip starts to move away from the lead, and determines a timing at which the lip has completed the movement away from the lead as the second timing. Judging as timing,
2. 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 tone control apparatus according to claim 1, 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 total value of the sensor information values 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. 4. The start of an operation in which the lip moves away from the lead is detected when it is detected that the total value of the sensor information of each part is less than a first value. 5. Musical tone control device.
<Claim 5>
Find the center of gravity position of the lip on the lead from the value of the sensor information obtained from each of the sensing units,
Of the change between the total value of the centroid position and the sensor information value determined at the third timing and the total value of the centroid position and the sensor information value determined at the fourth timing. The musical tone control apparatus 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 tone control apparatus according to claim 1, wherein the position determination process uses a position of the center of gravity of the contact area of the lip on the lead as the contact position.
<Claim 7>
Multiple keys operated to determine the pitch,
A lead having a lip detection sensor for detecting the contact state of the lip;
A sound generator for generating musical sounds;
A musical sound control device according to any one of claims 1 to 6,
An electronic musical instrument characterized by comprising:
<Claim 8>
A control method for a musical sound control device,
Determining a contact position of the lip on the lead based on sensor information from a lip detection sensor that detects a contact state of the lip on the lead;
Controlling a musical sound generated by a sound source unit corresponding to the determined contact position;
Detecting that the lip starts to move away from the lead based on the sensor information;
Based on the sensor information, when it is determined that the lip separation form is the first form, the period from the first timing to at least the second timing at which the lip completes the operation of separating the lip. Setting the contact position at the first timing as the actual contact position of the lip;
A control method for a musical sound control apparatus comprising:
<Claim 9>
In the processing section of the musical sound control device,
A position determination process for determining a contact position of the lip on the lead based on sensor information from a lip detection sensor for detecting a contact state of the lip on the lead;
A musical sound control process for controlling a musical sound generated by a sound source unit corresponding to the contact position determined in the position determination process;
Based on the sensor information, a detection process for detecting that the lip has started to move away from the lead; and
Based on the sensor information, when it is determined that the lip separation form is the first form, the period from the first timing to at least the second timing at which the lip completes the operation of separating the lip. A process of setting the contact position at the first timing as the actual contact position of the lip;
A program of a musical sound control device characterized by realizing the above.

DESCRIPTION OF SYMBOLS 100 Electronic musical instrument 100a Tube part 1 Manipulator 2 Breath pressure detection part 3 Lip detection part 4 Tan detection part 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 Opening 40, 30-39 Electrode E1 Upper front tooth E2 Lower front tooth L Lip P Performers S10, S20-S29 Touch sensor

Claims (9)

A position determination process for determining a contact position of the lip on the lead based on sensor information from a lip detection sensor for detecting a contact state of the lip on the lead;
A musical sound control process for controlling a musical sound generated by a sound source unit corresponding to the contact position determined in the position determination process;
Based on the sensor information, a detection process for detecting that the lip has started to move away from the lead; and
Based on the sensor information, when it is determined that the lip separation form is the first form, the period from the first timing to at least the second timing at which the lip completes the operation of separating the lip. A process of setting the contact position at the first timing as the actual contact position of the lip;
A musical tone control apparatus comprising a processing unit for executing The processing unit determines, as the first timing, a timing at which the lip starts to move away from the lead, and determines a timing at which the lip has completed the movement away from the lead as the second timing. Judging as timing,
2. 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.   The musical tone control apparatus according to claim 1, 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.   In the detection process, the total value of the sensor information values 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. 4. The start of an operation in which the lip moves away from the lead is detected when it is detected that the total value of the sensor information of each part is less than a first value. 5. Musical tone control device. Find the center of gravity position of the lip on the lead from the value of the sensor information obtained from each of the sensing units,
Of the change between the total value of the centroid position and the sensor information value determined at the third timing and the total value of the centroid position and the sensor information value determined at the fourth timing. The musical tone control apparatus according to claim 4, wherein when the form satisfies the first condition, it is determined that the form is the first form.   The musical tone control apparatus according to claim 1, wherein the position determination process uses a position of the center of gravity of the contact area of the lip on the lead as the contact position. Multiple keys operated to determine the pitch,
A lead having a lip detection sensor for detecting the contact state of the lip;
A sound generator for generating musical sounds;
A musical sound control device according to any one of claims 1 to 6,
An electronic musical instrument characterized by comprising: A control method for a musical sound control device,
Determining a contact position of the lip on the lead based on sensor information from a lip detection sensor that detects a contact state of the lip on the lead;
Controlling a musical sound generated by a sound source unit corresponding to the determined contact position;
Detecting that the lip starts to move away from the lead based on the sensor information;
Based on the sensor information, when it is determined that the lip separation form is the first form, the period from the first timing to at least the second timing at which the lip completes the operation of separating the lip. Setting the contact position at the first timing as the actual contact position of the lip;
A control method for a musical sound control apparatus comprising: In the processing section of the musical sound control device,
A position determination process for determining a contact position of the lip on the lead based on sensor information from a lip detection sensor for detecting a contact state of the lip on the lead;
A musical sound control process for controlling a musical sound generated by a sound source unit corresponding to the contact position determined in the position determination process;
Based on the sensor information, a detection process for detecting that the lip has started to move away from the lead; and
Based on the sensor information, when it is determined that the lip separation form is the first form, the period from the first timing to at least the second timing at which the lip completes the operation of separating the lip. A process of setting the contact position at the first timing as the actual contact position of the lip;
A program of a musical sound control device characterized by realizing the above.

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