JP2006039262A - Effect imparting apparatus and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide effects such as a string resonance effect and a damper effect more effectively when performing a layer performance or a split performance with a plurality of parts.
SOLUTION: Tone setting means for setting a timbre for each part, volume setting means for setting a volume for each part, and a part to which an effect is to be applied is determined according to the timbre and volume for each part. An effect applying apparatus having an effect applying means is provided.
[Selection] Figure 3

Description

  The present invention relates to an effect imparting technique, and relates to a technique for imparting an effect to a part whose tone color and volume can be set.

  Some electronic musical instruments such as an electronic piano imitate a live piano and impart a string resonance effect and / or a damper effect. The string resonance effect is an effect of pseudo-sounding the resonance sound of the string being pressed. The damper effect is an effect of pseudo-sounding the resonance sound of the strings of keys other than the key that was pressed when the key was pressed while pressing the damper pedal. The string resonance effect and the damper effect are applied only when the timbre is set to a piano timbre, and are not applied to a timbre other than the piano.

  Electronic keyboard instruments include split performance and layer performance. In the split performance, for example, the key range of the keyboard is divided into two parts, and different tone colors can be set for each key range. For example, a piano tone color can be set for the high tone key range, and a bass can be set for the low tone key range. In the layer performance, for example, tone colors are set separately for two parts, and when the key is pressed, a sound in which the two tone colors are superimposed is generated.

  In such an electronic musical instrument, when playing multiple piano parts in layer performance and split performance, the number of sound channels (maximum number of simultaneously soundable sounds) and the processing capacity of the CPU are limited, so the number of parts to which effects are added. Need to be restricted. For example, in the case of performing a layer performance by superposing two timbres, a main part and a sub part are determined in advance, and an effect is added only to the timbre of the main part.

  The method of predetermining the main part and subpart has a problem that the effect is not added when the subpart is a piano tone and the main part is a tone other than piano. In addition, when both the main part and the sub part are piano timbres, there is a problem that it is difficult to understand the effect when the sub part is turned up in volume.

  For example, when there are four performance parts on which timbres are superimposed, there is a problem that it is not possible to determine in advance which part is selected as the piano timbre and used as the main timbre.

  Further, Patent Document 1 below describes a musical sound performance device in which priorities are set for performance parts, and when there is no empty effect imparting means, the effect imparting means are assigned in order from the high priority performance parts. ing.

JP 2002-258844 A

  An object of the present invention is to provide effects such as a string resonance effect and a damper effect more effectively when performing a layer performance or a split performance with a plurality of parts.

  The effect imparting device of the present invention should impart an effect according to the tone color and volume for each part, tone volume setting means for setting the tone for each part, volume setting means for setting the volume for each part, and the tone and volume for each part And an effect applying means for determining a part.

  Further, the effect applying method of the present invention provides an effect according to a timbre setting step for setting a timbre for each part, a volume setting step for setting a volume for each part, and a timbre and volume for each part. An effect providing step for determining a part to be performed.

  By determining the part to which the effect should be applied according to the tone and volume of each part, when performing layer performance or split performance with multiple parts, effects such as string resonance effect and damper effect are more effectively applied can do. By determining the part to which the effect should be applied according to the timbre, for example, when a piano timbre part and a bass timbre part are set, a string resonance effect can always be imparted to the piano timbre part, A desired effect can be imparted to a desired tone color. Also, by determining the part to which the effect should be applied according to the volume, for example, when multiple piano timbre parts are set, the effect can be understood because the volume of the piano timbre part to which the effect is applied is low. It is possible to solve the problem of difficulty and to apply an effect to a part whose volume is high.

  FIG. 1A is a conceptual diagram for explaining a string resonance switch and a volume according to an embodiment of the present invention. This electronic musical instrument has a plurality of (for example, four) parts. The switch SW1 is a string resonance switch of the first part, the switch SW2 is a string resonance switch of the second part, the switch SW3 is a string resonance switch of the third part, and the switch SW4 is a string resonance switch of the fourth part. It is a string resonance switch. When the switch SW1 is on, the string resonance effect is applied to the first part, and when the switch SW1 is off, the string resonance effect is not applied to the first part. Similarly, when the switches SW2 to SW4 are turned on, the string resonance effect is applied to the second to fourth parts, and when the switches SW2 to SW4 are turned off, the string resonance effect is not applied to the second to fourth parts. The switches SW1 to SW4 are actually flags inside the computer processing and are automatically controlled to be turned on / off.

  Volume V1 is the volume of the first part, volume V2 is the volume of the second part, volume V3 is the volume of the third part, and volume V4 is the volume of the fourth part. The volume V1 to V4 can be specified for each part by the user using the slider operator. Note that the volume may be set by switching the part number with one slider operator. In addition to the volume, a timbre can be set for each part.

  The part to which the string resonance effect is added is not fixed, but the effect can be selectively applied to all the parts. The string resonance effect on / off switches SW1 to SW4 are provided for each part, and the part to which the effect is added Can be freely selected. Further, a judgment unit is provided that compares the volume of the piano tone parts and determines that the part with the higher volume is the part that the user would like to use mainly.

  When a tone color is selected, if a piano tone color is selected, the string resonance switches SW1 to SW4 of that part are turned on, and the string resonance switches SW1 to SW4 of other parts are turned off. If there are a plurality of piano tone parts, the maximum volume part is turned on, and the other parts are turned off.

  FIG. 1B is a diagram for explaining a control method of the string resonance switches SW1 to SW4 when there are a plurality of piano tone parts. For example, the first part is the Mellow Grand Piano tone, the second part is the Concert Grand Piano tone, the third part is the Strings tone, the fourth part Is set to the sound of the pad. The first and second parts are timbres of the piano, and the third and fourth parts are timbres other than the piano. Since the string resonance effect can be applied only to the piano tone color, the switches SW3 and SW4 of the third and fourth parts are turned off.

  Volumes V1 to V4 of the first to fourth parts are set in a relationship of V4 <V1 <V3 <V2. Of the first and second parts of the piano tone, the volume V2 of the second part is larger than the volume V1 of the first part, so that it is appropriate to give a string resonance effect to the second part. to decide. That is, only the switch SW2 is turned on, and the switches SW1, SW3, SW4 are turned off. As a result, the string resonance effect is given only to the second part.

  FIGS. 1C and 1D are diagrams for explaining a control method of the string resonance switches SW1 to SW4 when the volume is changed. When the volume is changed, if the part whose volume is to be changed is a piano tone, the on / off state of the string resonance switches SW1 to SW4 is controlled by comparing the volume with other piano tone parts. In other words, when there are multiple timbre parts that can be given a predetermined effect, if the volume of at least one of the multiple parts is changed, the effect is applied according to the timbre and volume of each part at the time of the change. Decide which part to do.

  FIG. 1C is a diagram for explaining a control method of the string resonance switches SW1 to SW4 when the volume is increased. For example, assume that the user increases the volume V1 of the first part in the state of FIG. At this time, when the switch SW1 is turned off and the volume V1 of the first part becomes m% higher than the volume V2 of the second part having the maximum volume, the switch SW1 is turned on and the switches of the other parts are switched on. SW2 to SW4 are turned off.

  The switch SW1 may be turned on immediately when the volume V1 becomes larger than the volume V2. However, in this case, chattering may occur during the period in which the volumes V1 and V2 are substantially the same value, and the on / off switching of the switches SW1 and SW2 may be repeatedly performed. In order to prevent this, it is desirable to switch from the switch SW2 to the switch SW1 when m% increases as described above.

  The switch is not limited to the case where the predetermined percentage of m% is increased, but may be switched when the predetermined value is increased. That is, when there are a plurality of timbre parts to which a predetermined effect can be imparted, if the volume of one part of the plurality of parts is larger than the maximum volume of the plurality of parts by a predetermined ratio or a predetermined value, The effect is preferentially given to the part of the increased volume.

  FIG. 1D is a diagram for explaining a method of controlling the string resonance switches SW1 to SW4 when the volume is reduced. For example, it is assumed that the user decreases the volume V1 of the first part in the state shown in FIG. At this time, when the switch SW1 is turned on and the volume V1 of the first part becomes n% lower than the piano tone part of the second largest volume V2, the switch SW1 is turned off to newly increase the volume. Turn on the switch SW2 of the piano tone part.

  The switch is not limited to the case where the predetermined percentage of n% is reduced, and the switch may be switched when the predetermined ratio is reduced. That is, when there are a plurality of timbre parts to which a predetermined effect can be applied, the volume of the maximum volume of the plurality of parts is set to a predetermined ratio or a predetermined volume than the second largest volume of the plurality of parts. If the value is decreased, the effect is preferentially given to the part that has reached the maximum volume.

  Also, the judgment criteria can be made different depending on whether the volume is increased or decreased, such as m% = 10% when the volume is increased and n% = 20% when the volume is decreased. On the contrary, m may be increased, n may be decreased, and switching of the switches SW1 to SW4 may be emphasized when the volume is increased.

  FIG. 1E is a diagram for explaining a control method of the string resonance switches SW1 to SW4 when the timbre is changed. For example, in the state shown in FIG. 1D, it is assumed that the user changes the tone color of the second part from a concert grand piano to a strings pad. That is, assume that the tone of the piano is changed to a tone other than the piano. This means that the first part is the Mellow Grand Piano tone, the second part is the Strings Pad tone, the third part is the Strings tone, and the fourth part is the Strings tone. The sound of the pad is set. In this case, the switch SW2 of the part having a tone other than the piano is switched from ON to OFF, and the switch SW1 of the first part, which is the only piano tone, is switched from OFF to ON.

  Since each part has switches SW1 to SW4, the string resonance switch can be used if the string resonance effect can be applied to multiple parts by increasing the maximum number of sounds that can be generated simultaneously and by improving the processing capacity of the CPU. A plurality of parts that turn on SW1 to SW4 can also be provided.

  In addition, it is not limited to a string resonance effect, A damper effect can be provided similarly to a string resonance effect. Hereinafter, the case of the string resonance effect will be described as an example.

  FIG. 2 is a block diagram illustrating a hardware configuration example of an electronic musical instrument including the effect applying device according to the present embodiment. A sound source (TG) 202, a CPU 203, a panel 204, a keyboard 205, a ROM 206, a RAM 207, and a MIDI interface 211 are connected to the bus 201.

  The CPU 203 performs various calculations or processes, and executes the process of FIG. 3 and the like described later according to the computer program stored in the ROM 206. The timer 212 supplies time information to the CPU 203. The CPU 203 can perform a timer process or the like according to the time information. The RAM 207 is used as a working area for the CPU 203. The panel 204 includes controls for volume V1 to V4 (FIG. 1A), tone color selection switch, split performance / layer performance selection switch, and display device, and sets the volume and tone color for each part by user operation. Split performance / layer performance can be set.

  In the split performance, the key range of the keyboard 205 can be divided into a plurality of parts, and different tone colors can be set for each key range. For example, a piano tone color can be set for the high-pitched key range part, and a bass can be set for the low-pitched key range part. In the layer performance, when a timbre is separately set for a plurality of parts and the keyboard 205 is depressed, a sound in which the plurality of timbres are superimposed is generated.

  The keyboard 205 has a plurality of keys that can be pressed and released. When the keyboard 205 is pressed, a key-on event including a velocity (key-pressing speed) and a key number (pitch) is transmitted to the CPU 203, and when the keyboard 205 is released, a key-off event is transmitted to the CPU 203. The CPU 203 determines the part to which the string resonance effect is to be applied according to the tone color and volume set for each part. The switches SW1 to SW4 of the part to which the effect is to be applied are turned on, and the switches SW1 to SW4 of the part to which the effect is not to be applied are turned off. The switches SW1 to SW4 are set as flags in the RAM 207. The MIDI interface 211 can input / output performance data and the like as MIDI data to the outside.

  A sound source (musical sound signal generating means) 202 generates a musical sound signal based on performance data obtained by operating the keyboard 205. The sound source 202 can generate a musical sound signal by split performance in which a plurality of parts are divided or layer performance in which a plurality of parts are overlapped. At that time, a string resonance effect is given to a predetermined part according to the switches SW1 to SW4. The D / A converter 208 converts the digital musical tone signal generated by the sound source 202 into an analog format and outputs it to the amplifier 209. The amplifier 209 amplifies the musical sound signal, and the musical sound is generated by the speaker 210.

  FIG. 3 is a flowchart showing processing performed by the electronic musical instrument of FIG. The electronic musical instrument performs the following processing when the power is turned on.

  First, in step S301, initialization such as timbre setting is performed. Next, in step S302, it is checked whether or not there is a change in tone color for each part by the user's operation of the tone color selection switch. If there is a change, the process proceeds to step S303, and if there is no change, the process proceeds to step S307. In step S303, the timbre of each part is changed to the timbre specified by the timbre selection switch. In step S304, it is checked whether or not there is a piano tone color part among the plurality of parts. If there is a piano tone part, the process proceeds to step S305, and if not, the process proceeds to step S306.

  In Step S305, if there are a plurality of piano tone parts, only the string resonance switch (SW1 to SW4) of one part of the maximum volume is turned on. When there is one piano tone part, only the string resonance switch of that part is turned on. Thereafter, the process returns to step S302. In step S306, the string resonance switches of all parts are turned off. Thereafter, the process returns to step S302.

  In step S307, it is checked whether or not the volume (volume) V1 to V4 for each part is changed by the user's operation of the volume operator. If there is a change, the process proceeds to step S308, and if there is no change, the process proceeds to step S315. In step S308, the volume of each part is changed to the volume specified by the volume operator. Next, in step S309, it is checked whether or not there is a piano tone color part among the plurality of parts. If there is a piano tone part, the process proceeds to step S310, and if not, the process returns to step S302.

  In step S310, it is checked whether the volume has increased. If the volume has increased, the process proceeds to step S311. If the volume has decreased, the process proceeds to step S313. In step S311, it is checked whether the volume of the part has increased by m% or more from the maximum volume of the plurality of parts. If it increases by m% or more, it will progress to step S312 and if not increased, it will return to step S302. In step S312, the string resonance switch of the part whose volume has been increased is turned on, and the string resonance switches of the other parts are turned off. Thereafter, the process returns to step S302.

  In step S313, it is checked whether or not the volume of the maximum volume of the plurality of parts has decreased by n% or less than the second largest volume of the plurality of parts. If it decreases by n% or less, the process proceeds to step S314, and if not decreased, the process returns to step S302. In step S314, the string resonance switch of the part whose volume is reduced is turned off, and the string resonance switch of the piano tone part whose volume is newly increased is turned on. Thereafter, the process returns to step S302.

  In step S315, it is checked whether there is a keyboard event. The keyboard event includes a key-on event based on key depression of the keyboard 205 and a key-off event based on key release from the keyboard 205. If there is a keyboard event, the process proceeds to step S316, and if there is no keyboard event, the process proceeds to step S317. In step S316, sound generation processing is performed if the keyboard event is a key-on event, and mute processing is performed if the keyboard event is a key-off event. At that time, the part whose string resonance switch is on is given a string resonance effect to perform sound generation processing. If split performance or layer performance is selected, sound generation processing for split performance or layer performance is performed. Next, in step S317, other processes such as operation element event processing such as timbre selection and volume change for each part by the user operating the operation element are performed. Thereafter, the process returns to step S302.

  Although the string resonance effect has been described above as an example, the present invention can also be applied to other effects such as a damper effect. Further, the present invention is not limited to the piano tone effect, and other tone effects can be similarly applied. That is, the predetermined effect can be applied to a sound that can be given only to a predetermined tone color corresponding to the predetermined effect.

  In the present embodiment, there is a tone color setting means for setting a tone color for each part and a volume setting means for setting the volume for each part, and an effect is given according to the tone color and volume for each part. Determine the part to be.

  By determining the part to which the effect should be applied according to the tone and volume of each part, when performing layer performance or split performance with multiple parts, effects such as string resonance effect and damper effect are more effectively applied can do. By determining the part to which the effect should be applied according to the timbre, for example, when a piano timbre part and a bass timbre part are set, a string resonance effect can always be imparted to the piano timbre part, A desired effect can be imparted to a desired tone color. Also, by determining the part to which the effect should be applied according to the volume, for example when multiple piano timbre parts are set, the effect can be understood because the volume of the piano timbre part to which the effect is applied is low. It is possible to solve the problem of difficulty and to apply an effect to a part whose volume is high.

  In the case where there are a plurality of piano tone parts, an example has been described in which only one string resonance switch is turned on. However, the present invention is not limited to one switch, and two or more switches may be turned on. Good. That is, when there are a plurality of timbre parts to which a predetermined effect can be imparted, the effect may be imparted to only some of the plurality of parts. In that case, an effect is preferentially given to a part with a loud sound volume among the plurality of parts.

  The above-described embodiments are merely examples of implementation in carrying out the present invention, and the technical scope of the present invention should not be construed as being limited thereto. That is, the present invention can be implemented in various forms without departing from the technical idea or the main features thereof.

FIGS. 1A to 1E are conceptual diagrams for explaining a string resonance switch and a sound volume according to an embodiment of the present invention. It is a block diagram which shows the hardware structural example of the electronic musical instrument containing the effect provision apparatus by this embodiment. It is a flowchart which shows the process which the electronic musical instrument of FIG. 2 performs.

Explanation of symbols

201 Bus 202 Sound source 203 CPU
204 Panel 205 Keyboard 206 ROM
207 RAM
208 D / A converter 209 Amplifier 210 Speaker 211 MIDI interface 212 Timer SW1 to SW4 String resonance switch V1 to V4 Volume

Claims (11)

Tone setting means for setting a tone for each part;
Volume setting means for setting the volume for each part;
An effect imparting device comprising effect imparting means for determining a part to which an effect is to be imparted according to the tone color and volume of each part.   2. The effect applying apparatus according to claim 1, wherein the effect applying means can apply the predetermined effect only to a predetermined tone color corresponding to the predetermined effect.   3. The effect applying apparatus according to claim 2, wherein when there are a plurality of timbre parts to which a predetermined effect can be imparted, the effect imparting means imparts an effect to only a part of the plurality of parts.   4. The effect applying device according to claim 3, wherein, when there are a plurality of timbre parts to which a predetermined effect can be applied, the effect applying means preferentially applies the effect to a part having a large volume among the plurality of parts. .   When there are a plurality of timbre parts to which a predetermined effect can be imparted and the volume of at least one of the plurality of parts is changed, the effect applying means changes the timbre and volume for each part at the time of the change. 5. The effect imparting apparatus according to claim 3, wherein a part to which an effect is to be imparted is determined accordingly.   In the case where there are a plurality of timbre parts to which a predetermined effect can be applied, the effect applying means sets the volume of one part of the plurality of parts to a predetermined ratio or a predetermined volume from the maximum volume of the plurality of parts. 6. The effect applying apparatus according to claim 5, wherein when the value is increased, the effect is preferentially applied to the part of the increased volume.   When there are a plurality of timbre parts to which a predetermined effect can be imparted, the effect imparting means sets the volume of the maximum volume of the plurality of parts to be larger than the second largest volume of the plurality of parts. 6. The effect applying device according to claim 5, wherein when the predetermined ratio or the predetermined value is decreased, the effect is preferentially applied to the part having the maximum volume.   The effect imparting device according to any one of claims 2 to 7, wherein the effect imparting means can impart the string resonance effect only to the timbre of the piano.   The effect imparting device according to any one of claims 2 to 7, wherein in the effect imparting means, the damper effect can be imparted only to the tone color of the piano.   Furthermore, the effect provision apparatus of any one of Claims 1-9 which have a musical tone signal production | generation means which produces | generates a musical tone signal by the split performance which divided | segmented these several parts, or the layer performance which piled up these multiple parts. Tone setting step for setting the tone for each part,
Volume setting step for setting the volume for each part,
An effect applying method comprising: an effect applying step of determining a part to which an effect should be applied according to the tone color and volume of each part.

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