JPH11259075A - Musical sound generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily set the value of the parameter of musical sound regardless of an external noise level changed with time. SOLUTION: A CPU 2 stores a set parameter value and a sound height value, etc., fetched from an operator and a keyboard 1 in a RAM 4, processes them and gives a sounding instruction and a silencing instruction to a sound source part 5 corresponding to the program of a ROM 3. Also, the CPU 2 displays the recommendation value of the optimum volume of the musical sound at a display part 11 corresponding to a noise level detected by a microphone 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical tone generator for producing musical tones according to values of parameters such as volume and timbre, such as an electronic musical instrument and an acoustic device.

[0002]

2. Description of the Related Art In an electronic musical instrument, for example, a user operates a volume control to enjoy a musical tone at a volume suitable for the user. However, if the external noise level increases, the user cannot easily hear the musical tone. You will adjust the volume control.

[0003]

However, since the external noise level often changes with time, there is a problem that it is extremely troublesome to adjust the volume control every time the noise level changes. SUMMARY OF THE INVENTION It is an object of the present invention to make it possible to easily set parameter values of musical tones irrespective of an external noise level that changes with time.

[0004]

SUMMARY OF THE INVENTION The present invention provides a parameter setting means for setting a parameter value of a musical tone to be emitted, a noise detecting means for detecting an external noise level, and a noise level detected by the noise detecting means. Parameter discriminating means for discriminating the recommended value of the optimal parameter of the musical tone in accordance with the parameter, and recommendation of the parameter when the parameter value set by the parameter setting means is different from the recommended value of the parameter discriminated by the parameter discriminating means. Parameter display control means for displaying a value. According to the present invention, a recommended value of an optimum parameter of a musical tone is displayed according to a noise level.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, first to sixth embodiments of the tone generator of the present invention will be described with reference to the drawings, taking an electronic musical instrument as an example. FIG. 1 is a block diagram illustrating a system configuration of the electronic musical instrument according to each embodiment. The controls and the keyboard 1 include a plurality of controls for setting parameters of generated musical sounds, for example, volume, tone, rhythm, tempo, and the like.
Equipped with multiple keys for inputting musical pitch, velocity, etc.
A parameter setting value is input according to a setting operation, and a pitch value, a velocity value, and the like are input according to a key pressing operation. The CPU 2 controls the entire electronic musical instrument in accordance with a predetermined program, processes parameter settings, pitch values, and the like taken from the controls and the keyboard 1, and issues a sounding instruction and a mute instruction. The ROM 3 stores programs executed by the CPU 2, initial data in initialization, various parameter data, and the like. RAM4
Is a work area of the CPU 2, and includes various registers,
It has a flag and the like, and temporarily stores data processed by the CPU 2.

The tone generator 5 receives a tone generation instruction, a mute instruction, parameter data, pitch data, and the like from the CPU 2 to generate and output a tone signal. The waveform ROM 6 stores the sound source unit 5
The waveform data corresponding to the data read from the
To enter. The sound system 7 includes a DA converter,
It is composed of an amplifier, a speaker, etc. (neither is shown),
The tone generator 5 generates a musical tone in accordance with a musical tone signal that is output after being subjected to calculations such as an envelope. Note that the amplification level of the amplifier changes according to the master volume, which will be described later, and the sounding level changes.

The microphone 8 detects external noise and generates a noise signal. The input volume 9 adjusts the level of a noise signal output from the microphone 8 according to an operation.
The AD converter 10 converts the noise level adjusted by the input volume 9 from analog to digital, and inputs the noise waveform to the CPU 2. Generally, since a noise signal is an alternating current, a digital noise waveform input to the CPU 2 also has a sign. The display unit 11 includes a display area for displaying a noise level and a display area for displaying recommended parameter values, as described later.

In each of the following embodiments, the master volume and the CPU 2 constitute parameter setting means for setting parameter values of musical tones to be generated according to operations. The microphone 8 and the CPU 2 constitute noise detection means for detecting an external noise level. Then, the CPU 2 determines the recommended parameter value of the musical tone in accordance with the noise level detected by the noise detecting unit. The parameter determining unit determines the parameter value set by the parameter setting unit. If it is different from the recommended value of the parameter, a parameter display control means for displaying the recommended value of the parameter is configured.

FIG. 2 shows a main flow of the CPU 2 and a flow of a timer interrupt in each embodiment. When the power of the electronic musical instrument is turned on, predetermined initialization is performed (step A1), and steps A2 to A
5 is executed. That is, a switch process for detecting the state of the operator (step A2), a keyboard process for detecting key press / release of the keyboard (step A3), and a sound generation process for sending a sound generation instruction and a mute instruction to the sound source unit (step A2) A
4) Other processing (step A5) is repeatedly executed. If a timer interrupt occurs at regular intervals during execution of this loop, microphone input processing (step A6) is executed.

Next, the operation of the first embodiment will be described with reference to FIG.
This will be described with reference to FIG. FIG. 3 is a flowchart of the microphone input process in the first embodiment, and FIG. 4 is a diagram illustrating a display unit and an operation unit. In FIG. 3, the CPU 2
It is determined whether or not a noise waveform is input from the D converter 10 (step B1). If there is no input, this flow ends immediately. When a noise waveform is input, it is determined whether or not the sample has a value larger than the previous maximum value sample (positive value) (step B).
2). If the sample is larger than the previous maximum value sample, the current sample is updated as the maximum value, and the value is held in the register of the RAM (step B3).

In step B2, if the value of the current sample is smaller than the value of the previous maximum value sample, it is determined whether or not the current sample is smaller than the previous minimum value sample (negative value) (step B2). B4). If it is smaller than the previous minimum value sample, the current sample is updated as the minimum value, and the value is held in the RAM register (step B5).

Next, it is determined whether one of the maximum value and the minimum value of the RAM has been updated (step B6). If the value has been updated, the absolute value of the sample of the maximum value and the sample of the minimum value is determined. The larger value is determined as the maximum input value of the noise level, and is displayed in the noise level display area 12 in FIG. 3 (step B7). In addition, in the display area 12,
An arrow 12a is provided at the center as a level for the user to judge whether or not the noise is present. In a normal ideal state, the noise level is adjusted by the operation knob (knob) 13 of the input volume so that the noise level becomes this value. This is the same for the other embodiments.

If neither the maximum value nor the minimum value is updated in step B6, or after displaying the maximum input value in step B7, it is determined whether or not 5 seconds have elapsed since the determination of the latest maximum input value. (Step B8).
If 5 seconds have not elapsed, this flow is immediately terminated. If 5 seconds have elapsed since the determination of the latest maximum input value, a value larger than the maximum input value by 48 db (8 bits) is displayed as a recommended value of the volume parameter in the recommended volume value display area 14 in FIG. (Step B
9). Next, the maximum value, minimum value, and maximum input value registers are reset (step B10). Then, this flow ends.

When the user sees the recommended volume value in the display area 14 and determines that volume adjustment is necessary, the user operates the operator 1 of the master volume 15 shown in FIG.
5a is moved to the position of the dotted line which is the position of the recommended volume value.

As described above, in the first embodiment, the recommended value of the optimum volume of the musical tone is displayed according to the noise level. Therefore, regardless of the external noise level that changes with time, the recommended sound volume can be easily set to the optimum value by looking at the recommended volume value.

Next, the operation of the second embodiment will be described with reference to FIG.
This will be described with reference to FIG. FIG. 5 is a flowchart of a microphone input process in the second embodiment, and FIG. 6 is a diagram illustrating a display unit and an operation unit. In FIG. 5, CPU 2
It is determined whether or not a noise waveform has been input from the D converter 10 (step C1). If there is no input, this flow ends immediately. When a noise waveform is input, it is determined whether or not the sample has a value larger than the previous maximum value sample (positive value) (step C).
2). If it is larger than the previous maximum value sample, the current sample is updated as the maximum value, and the value is held in the RAM register (step C3).

In step C2, if the value of the current sample is smaller than that of the previous maximum value, it is determined whether or not the current sample is smaller than the previous minimum value sample (negative value) (step C2). C4). If it is smaller than the previous minimum value sample, the current sample is updated as the minimum value, and the value is held in the RAM register (step C5).

Next, it is determined whether or not either the maximum value or the minimum value of the RAM has been updated (step C6). If the value has been updated, the absolute value of the sample of the maximum value and the sample of the minimum value is determined. The larger value is determined as the maximum input value of the noise level, and is displayed in the noise level display area 12 in FIG. 6 (step C7).

If neither the maximum value nor the minimum value is updated in step C6, or after displaying the maximum input value in step C7, it is determined whether or not 5 seconds have elapsed since the determination of the latest maximum input value. (Step C8).
If 5 seconds have not elapsed, this flow is immediately terminated. If 5 seconds have passed since the determination of the latest maximum input value, a value larger than the maximum input value by 48 db (8 bits) is displayed in the recommended volume value display area 14 in FIG. 6 as the recommended value of the volume parameter. (Step C
9).

Next, it is determined whether or not the automatic master volume is on (step C10). FIG. 6 shows the automatic master volume 16 and the automatic master volume 16.
LED 17 that is lit when is turned on. If the automatic master volume is on, the master volume value is automatically changed to the recommended volume value and set (step C11). In this case, a configuration may be adopted in which the operation element 15a of the master volume 15 in FIG. 6 is automatically moved, but the drive mechanism can be omitted by changing only the contents of the RAM register. After the automatic setting, or when the automatic master volume is off in step C10, the registers of the maximum value, the minimum value, and the maximum input value are reset (step C1).
2). Then, this flow ends.

As described above, in the second embodiment, the recommended value of the optimal volume of the musical tone is displayed according to the noise level, and the present set value is changed to the automatically displayed recommended value. Therefore, the tone volume can be automatically set to an optimum state regardless of the time-dependent external noise level.

Next, the operation of the third embodiment will be described with reference to FIG.
This will be described with reference to the flowchart of the microphone input process shown in FIG.
The CPU 2 determines whether or not a noise waveform is input from the AD converter 10 (Step D1). If there is no input, this flow ends immediately. When a noise waveform is input, it is determined whether or not the sample has a value larger than the previous maximum value sample (positive value) (step D2). If it is larger than the previous maximum value sample, the current sample is updated as the maximum value, and the value is held in the RAM register (step D3).

In step D2, if the value of the current sample is smaller than the value of the previous maximum value sample, it is determined whether or not the current sample is smaller than the previous minimum value sample (negative value) (step D2). D4). If it is smaller than the previous sample of the minimum value, the current sample is updated as the minimum value, and the value is held in the register of the RAM (step D5).

Next, it is determined whether or not either the maximum value or the minimum value of the RAM has been updated (step D6). If the value has been updated, the absolute value of the sample of the maximum value and the sample of the minimum value is determined. The larger one is determined and displayed as the maximum input value of the noise level (step D7).

If neither the maximum value nor the minimum value is updated in step D6, or after displaying the maximum input value in step D7, it is determined whether or not 5 seconds have elapsed since the determination of the latest maximum input value. (Step D8).
If 5 seconds have not elapsed, this flow is immediately terminated. If 5 seconds have elapsed since the determination of the latest maximum input value, a value 48 db (8 bits) larger than the maximum input value is displayed as a recommended value of the volume parameter (step D9).

Next, it is determined whether or not the automatic master volume is on (step D10). If the automatic master volume is on, the master volume value is automatically changed to the recommended volume value at a speed of 3 db per second (step D11). After the automatic setting, or when the automatic master volume is off in step D10, the registers of the maximum value, the minimum value, and the maximum input value are reset (step D12). Then, this flow ends.

As described above, in the third embodiment, the recommended value of the optimal volume of the musical tone is displayed according to the noise level, and the current volume is automatically displayed while the set value of the volume is gradually changed. To the recommended value. Therefore, regardless of the external noise level that changes over time, the tone volume can be automatically set to the optimal state, and the current value changes gently instead of suddenly to the recommended value. This has the effect of reducing discomfort.

Next, the operation of the fourth embodiment will be described with reference to FIG.
This will be described with reference to FIGS. FIG. 8 is a flowchart of a microphone input process in the fourth embodiment, FIG. 9 is a diagram illustrating a display unit and an operation device, and FIG. 10 is a diagram illustrating a tone color display. In FIG. 8, the CPU 2 determines whether or not there is a noise waveform input from the AD converter 10 (step E1). If there is no input, this flow ends immediately. When a noise waveform is input, it is determined whether or not the sample has a value larger than the previous maximum value sample (positive value) (step E2). If it is larger than the previous maximum value sample, the current sample is updated as the maximum value, and the value is held in the RAM register (step E3).

At step E2, if the value of the current sample is smaller than that of the previous maximum value, it is determined whether or not the current sample is smaller than the previous minimum value sample (negative value) (step E2). E4). If it is smaller than the previous minimum value sample, the current sample is updated as the minimum value, and the value is held in the RAM register (step E5).

Next, it is determined whether or not either the maximum value or the minimum value of the RAM has been updated (step E6). If it has been updated, the absolute value of the sample of the maximum value and the sample of the minimum value is determined. The larger one is determined as the maximum input value of the noise level, and is displayed in the noise level display area 12 in FIG. 9 (step E7).

If neither the maximum value nor the minimum value is updated in step E6, or after displaying the maximum input value in step E7, it is determined whether or not 5 seconds have elapsed since the determination of the latest maximum input value. (Step E8).
If 5 seconds have not elapsed, this flow is immediately terminated. If 5 seconds have passed since the determination of the latest maximum input value, the following recommended timbres and their timbre numbers are displayed in the recommended timbre display area 18 of FIG. 9 according to the maximum input value (step E9). ).

That is, the displayed contents are as follows. Maximum input value Recommended tone 30db or more Bright hard PIANO 24db or more Bright PIANO 18db or more hard PIANO 12db or more normal PIANO 6db or more Mellow PIANO

Next, it is determined whether or not the automatic tone setting switch is on (step E10). FIG. 9 shows an automatic tone setting switch 19 and an LED 20 which is turned on when the automatic tone setting switch 19 is turned on. If the automatic timbre switch is on, the current timbre is automatically changed to the recommended timbre and set (step E11). For example,
As shown in FIG. 10, when the noise is small, the “mellow PI” of tone number 01 which is a soft piano tone is used.
ANO is automatically set, and when there is a lot of noise, Brightness of tone number 05 which is an intense and hard piano tone is used.
Automatically set ard PIANO. After the automatic setting or when the automatic tone color setting switch is off in step E10, the registers of the maximum value, the minimum value, and the maximum input value are reset (step E12). Then, this flow ends.

As described above, in the fourth embodiment, the optimum recommended tone color of the musical tone is displayed according to the noise level, and the currently set tone color is changed to the automatically displayed recommended tone color. Therefore, the tone color of the musical tone can be automatically set to an optimum state regardless of the external noise level which changes with time.

Next, the operation of the fifth embodiment will be described with reference to FIG.
This will be described with reference to FIGS. FIG. 11 is a flowchart of a microphone input process in the fifth embodiment, FIG. 12 is a diagram illustrating a display unit and an operation device, and FIG. 13 is a diagram illustrating a recommended rhythm display. In FIG. 11, the CPU 2 determines whether or not a noise waveform is input from the AD converter 10 (step F1). If there is no input, this flow ends immediately. When a noise waveform is input, the sample is the previous maximum value sample (positive value)
It is determined whether or not the value is larger (step F2). If it is larger than the previous maximum value sample, the current sample is updated as the maximum value, and the value is held in the register of the RAM (step F3).

In step F2, if the value of the current sample is smaller than that of the previous maximum value, it is determined whether or not the current sample is smaller than the previous minimum value sample (negative value) (step F2). F4). If the sample is smaller than the previous minimum value sample, the current sample is updated as the minimum value, and the value is held in the RAM register (step F5).

Next, it is determined whether or not either the maximum value or the minimum value of the RAM has been updated (step F6). If the value has been updated, the absolute value of the sample of the maximum value and the sample of the minimum value are determined. The larger one is determined as the maximum input value of the noise level, and is displayed in the noise level display area 12 in FIG. 12 (step F7).

If neither the maximum value nor the minimum value is updated in step F6, or after displaying the maximum input value in step F7, it is determined whether or not 5 seconds have elapsed since the determination of the latest maximum input value. (Step F8).
If 5 seconds have not elapsed, this flow is immediately terminated. If 5 seconds have passed since the determination of the latest maximum input value, the recommended rhythm corresponding to the maximum input value is displayed in the recommended rhythm display area 21 of FIG. 12 (step F).
9).

That is, the displayed contents are as follows. Maximum input value Recommended rhythm 30 db or more ROCK 05 24 db or more ROCK 04 18 db or more ROCK 03 12 db or more ROCK 02 6 db or more ROCK 01

Next, it is determined whether or not the automatic rhythm setting switch is on (step F10). FIG. 12 shows an automatic rhythm setting switch 22 and an LED 23 which is turned on when the automatic rhythm setting switch 22 is turned on. If the automatic rhythm setting switch is on, the currently set rhythm is automatically changed to the recommended rhythm and set (step F11). After the automatic setting, or when the automatic rhythm setting switch is off in step F10, the registers of the maximum value, the minimum value, and the maximum input value are reset (step F12). Then, this flow ends. For example, as shown in FIG. 13, when the noise is small, a delicate and precise ROCK01 in a so-called rock ballad tone is automatically set. When the noise is large, a bright, conspicuous, simple, so-called hard The lock ROCK05 is automatically set.

As described above, in the fifth embodiment, the optimum recommended rhythm of the musical tone is displayed according to the noise level, and the present rhythm is automatically changed to the displayed recommended rhythm. Therefore, the rhythm of the musical tone can be automatically set to an optimum state regardless of the external noise level that changes with time.

Next, the operation of the sixth embodiment will be described with reference to FIG.
This will be described with reference to FIGS. FIG. 14 is a flowchart of the microphone input process in the sixth embodiment. FIG. 15 is a diagram showing the display unit and the controls, and FIG. 16 is a diagram showing the display of the recommended tempo. In FIG. 14, CPU 2
It is determined whether or not a noise waveform is input from converter 10 (step G1). If there is no input, this flow ends immediately. When a noise waveform is input, the sample is the previous maximum value sample (positive value)
It is determined whether or not the value is larger (step G2). If it is larger than the previous maximum value sample, the current sample is updated as the maximum value, and the value is held in the RAM register (step G3).

In step G2, if the value of the current sample is smaller than that of the previous maximum value, it is determined whether the current sample is smaller than the previous minimum value sample (negative value) (step G2). G4). If it is smaller than the previous sample of the minimum value, the current sample is updated as the minimum value, and the value is held in the register of the RAM (step G5).

Next, it is determined whether or not either the maximum value or the minimum value of the RAM has been updated (step G6). If the value has been updated, the absolute value of the sample of the maximum value and the sample of the minimum value is determined. The larger value is determined as the maximum input value of the noise level, and is displayed in the noise level display area 12 in FIG. 15 (step G7).

If neither the maximum value nor the minimum value is updated in step G6, or after displaying the maximum input value in step G7, it is determined whether or not 5 seconds have elapsed since the determination of the latest maximum input value. (Step G8).
If 5 seconds have not elapsed, this flow is immediately terminated. If 5 seconds have passed since the determination of the latest maximum input value, a recommended tempo corresponding to the maximum input value is displayed in the recommended tempo display area 24 of FIG. 15 (step G).
9).

That is, the displayed contents are as follows. Maximum input value Recommended rhythm 30db or more Tempo + 10% 24db or more Tempo + 05% 18db or more Tempo 00% 12db or more Tempo -05% 6dB or more Tempo -10% For example, as shown in FIG. In some cases, when the noise level becomes equal to or more than 24 db, the tempo 105 that has been increased by 5% is displayed as the recommended tempo.

Next, it is determined whether or not the automatic tempo setting switch is on (step G10). FIG. 15 shows an automatic tempo setting switch 25 and an automatic tempo setting switch 2.
5 shows an LED 26 which is lit when the LED 5 is turned on. If the automatic tempo setting switch is on, the current tempo value is automatically changed to the recommended tempo value and set (step G11). After the automatic setting, or when the automatic tempo setting switch is off in step G10, the registers of the maximum value, the minimum value, and the maximum input value are reset (step G12). Then, this flow ends.
For example, as shown in FIG. 16, when the noise is small,
A recommended tempo value that is 10% slower than the current tempo value is automatically set. If there is much noise, a recommended tempo value that is 10% faster than the current tempo value is automatically set.

As described above, in the sixth embodiment, the optimum recommended tempo value of the musical tone is displayed according to the noise level, and the present tempo value is changed to the automatically displayed recommended tempo value. Therefore, it is possible to automatically set the tempo value of the musical tone to an optimum state regardless of the external noise level which changes with time.

In each of the above embodiments, the data of volume, timbre, rhythm, and tempo have been described as examples of parameter data of recommended musical tones. However, parameter data such as pitch bend and modulation are displayed as recommended parameters. May be. Alternatively, the ratio between the melody level and the accompaniment level may be changed according to the external noise level.

In each of the above embodiments, the present invention has been described by taking an electronic musical instrument as an example. However, the present invention can also be applied to a portable audio device that enjoys musical sounds while walking. For example, when a portable acoustic device is used in a train, the noise level differs between when the train is running and when the train is stopped. Is displayed, and the value of the parameter of the musical tone can be easily set by a user operation or automatically.

[0051]

According to the present invention, a recommended value of an optimum parameter of a musical tone is displayed according to a noise level. Therefore, regardless of the time-varying external noise level,
It is possible to easily set the values of musical tone parameters.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a system configuration of an electronic musical instrument according to each embodiment of the present invention.

FIG. 2 is a flowchart of main and timer interrupts of a CPU 2 in FIG. 1;

FIG. 3 is a flowchart of a microphone input process according to the first embodiment.

FIG. 4 is a plan view showing an operation unit and a display unit according to the first embodiment.

FIG. 5 is a flowchart of a microphone input process according to the second embodiment.

FIG. 6 is a plan view showing an operation unit and a display unit according to a second embodiment.

FIG. 7 is a flowchart of a microphone input process according to the third embodiment.

FIG. 8 is a flowchart of a microphone input process according to a fourth embodiment.

FIG. 9 is a plan view showing an operation unit and a display unit according to a fourth embodiment.

FIG. 10 is a diagram showing a display of recommended timbres in a fourth embodiment.

FIG. 11 is a flowchart of a microphone input process according to the fifth embodiment.

FIG. 12 is a plan view showing an operator and a display unit according to a fifth embodiment.

FIG. 13 is a view showing a display of a recommended rhythm in a fifth embodiment.

FIG. 14 is a flowchart of a microphone input process according to the sixth embodiment.

FIG. 15 is a plan view showing an operation device and a display unit according to a sixth embodiment.

FIG. 16 is a diagram showing a display of a recommended tempo in the sixth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operator and keyboard 2 CPU 3 ROM 4 RAM 5 Sound source part 8 Microphone 11 Display part

Claims (3)

[Claims] 1. A parameter setting means for setting a parameter value of a musical tone to be sounded, a noise detecting means for detecting an external noise level, and an optimal parameter of a musical tone according to the noise level detected by the noise detecting means. A parameter determining means for determining a recommended value of the parameter, and a parameter for displaying the recommended value of the parameter when the parameter value set by the parameter setting means is different from the recommended value of the parameter determined by the parameter determining means. A tone generator, comprising: display control means. 2. When the value of the set parameter is different from the recommended value of the parameter determined by the parameter determining means, the parameter setting means automatically changes the parameter to the recommended value of the displayed parameter. The tone generator according to claim 1, wherein: 3. An automatic change selecting means for selecting, according to an operation, whether or not to automatically change to a recommended value of the displayed parameter, said parameter setting means. Musical sound generator.