JP3923177B2 - Electronic musical instruments - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic musical instrument, and more particularly to an electronic musical instrument provided with a hold operator.
[0002]
[Prior art]
Generally, in an electronic musical instrument, a musical sound is associated with a performance operator such as a key or a pad and assigned to the key or pad by pressing the key or pressing the pad. The generation of a musical sound is stopped by releasing the key being pressed or releasing the pressing of the pad being pressed.
[0003]
Conventionally, an electronic musical instrument having a hold operator such as a hold pedal or a hold button is known. In an electronic musical instrument having such a hold operator, a hold state is maintained during operation of the hold operator. In this hold state, the generation of the musical tone is continued even if the key being pressed is released or the pressing of the pad being pressed is released.
[0004]
By the way, in an electronic musical instrument equipped with a conventional hold operator, when the hold operator is operated, all musical tones being generated are uniformly held.
[0005]
On the other hand, in the case of an electronic musical instrument equipped with a sostenuto pedal in addition to the hold operator, only the musical tone being pressed is held when the sostenuto pedal is operated, and the key is pressed after the sostenuto pedal is operated. The key's tone is not held.
[0006]
In this way, when a sostenuto pedal is provided, it is possible to select a musical sound to be held and a musical sound that is not to be held. However, while one of the musical sounds is held, There was a problem that it was not possible to put the musical tone in the hold state.
[0007]
[Problems to be solved by the invention]
The present invention has been made in view of the various problems of the prior art as described above, and the object of the present invention is to select a musical sound to be held and a musical sound not to be held. The present invention aims to provide an electronic musical instrument capable of making another musical sound into a hold state while making it possible to hold another musical sound.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present invention is characterized in that a plurality of performance operators each associated with a musical tone to be generated based on an operation, and an operation of the performance operator A hold operator for placing the musical sound generated on the basis of the sound, and in response to the start of the operation of the performance operator, generation of a musical sound associated with the performance operator that has been started is started. A first instruction for instructing to stop the generation of a musical tone associated with the operation controller for which the operation has been stopped in response to the operation stop of the performance operator corresponding to the musical sound not being held; And when the hold operator is operated during the operation of the performance operator, the musical instrument associated with the performance operator being operated is instructed to be held. , A second instruction means for instructing to stop the generation of the musical tone that is in the hold state when the hold operation element is operated when none of the musical performance operators are operated. It is a thing.
[0009]
Therefore, according to the first aspect of the present invention, in response to the start of the operation of the performance operator, generation of a musical tone associated with the performance operator that has been started is started, The generation of the musical sound associated with the operation controller whose operation has been stopped is stopped in response to the operation of the musical operation element corresponding to the musical sound not in the hold state being stopped. If the hold operator is operated while the operator is operating, the musical tone associated with the performance operator being operated can be held, and any of the performance operators can be operated. If the hold operator is operated when not being held, generation can be stopped with respect to the musical tone that has been in the hold state, so that the musical sound that is to be held and the musical tone that is not to be held are selected. It allows, moreover, it will be able to be a different tone and hold state during that one of the musical tones in the hold state. Further, the invention according to claim 2 of the present invention is characterized in that in the invention according to claim 1, there is provided storage means for storing information indicating whether or not each musical sound being generated is in the hold state. The first instruction means determines whether or not each musical tone is in a hold state based on the stored contents of the storage means, and the second instruction means operates during the operation of the performance operator. When the hold operator is operated, the storage means stores the musical sound associated with the performance operator being operated in a hold state, and any of the performance operators is When the hold operator is operated when it is not being operated, generation stop is instructed with respect to a musical tone that is stored in the storage means as being held.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of an electronic musical instrument according to the present invention will be described in detail with reference to the accompanying drawings.
[0011]
FIG. 1 is a block diagram showing the overall structure of a waveform data reproducing apparatus as an example of an embodiment of an electronic musical instrument according to the present invention.
[0012]
This waveform data reproducing device is configured to control the overall operation using a central processing unit (CPU) 10, and this CPU 10, an analog / digital converter (A / D) 12, It comprises a disk 14 that uses magnetism or light, a semiconductor memory 16, a player 18, an operation panel 20, a hold pedal 22, and a digital / analog converter (D / A) 24. ing.
[0013]
That is, in the waveform data reproducing apparatus shown in FIG. 1, the entire operation is controlled by the CPU 10, and an audio signal (musical sound signal) input from the outside is A / D converted by the analog / digital converter 12. The converted waveform data is stored in the disk 14 under the control of the CPU 10.
[0014]
In this embodiment, the disk 14 using magnetism or light is used to store the waveform data. However, a storage device other than the disk may be used as long as it can store a large capacity. Of course it is good.
[0015]
The semiconductor memory 16 has only a small storage capacity compared to the disk 14 but can be accessed at high speed. The semiconductor memory 16 includes a random access memory (RAM) in which an area for storing waveform data, a working area, and the like are provided, and a read only memory (ROM) in which a program of the CPU 10 is stored. It is configured.
[0016]
The reproducer 18 reproduces the waveform data stored in the semiconductor memory 16 under the control of the CPU 10, and the reproduced waveform data is converted into an audio signal (musical signal) by a digital / analog converter 24. It is converted and output.
[0017]
Further, the operation panel 20 includes a start position designation operator 20a, a loop start position designation operator 20b, an end position designation operator 20c, a loop / one shot designation operator 20d, and numerals 1 to 16 in FIG. 16 pads 20e shown (note that the pad 20e is managed by being assigned pad numbers 1 to 16 corresponding to numerals 1 to 16 in FIG. 1), a bank switching operator 20f, and a hold operator. 20g and other operating elements 20h are provided.
[0018]
Here, the pad 20e is a push button switch, and instructs the start of reproduction of waveform data pre-assigned to the operated pad 20e in accordance with the operation.
[0019]
In this embodiment, three types of waveform data allocation patterns to the 16 pads 20e are set. Each allocation pattern is referred to as a bank, and an arbitrary bank can be selected according to the operation of the bank switching operator 20f.
[0020]
The start position designation operator 20a designates a start position from which waveform data is read. The loop start position designation operator 20b designates a loop start position from which waveform data is read. Yes, the end position designation operator 20c designates the end position of waveform data readout, and the loop / one-shot designation operator 20d determines whether to perform loop readout or one-shot readout. It is what you specify.
[0021]
The waveform data starts to be read from the start position specified by the start position specifying operator 20a in response to the operation (start of pressing) of the corresponding pad 20e. That is, the pressing start operation of the pad 20e is an instruction to start reproduction of the waveform data.
[0022]
When loop reading is designated by the loop / one-shot designation operator 20d, it is designated by the end position designation operator 20c while the corresponding pad 20e is being operated (pressed). When the reading is performed up to the end position, the operation of returning the reading position to the loop start position designated by the loop start position designating operator 20b and continuing the reading is repeated. Reading is stopped when the operation of the pad 20e is stopped (press release).
[0023]
If one-shot reading is specified by the loop / one-shot specifying operator 20d, the reading ends when the reading is performed up to the end position specified by the end position specifying operator 20c.
[0024]
It should be noted that the loop start position can be placed before the start position, placed behind the start position, or matched with the start position.
[0025]
Further, the hold operator 20g and the hold pedal 22 are in the same state as the operation of the pad 20e when the operation of the pad 20e is stopped with respect to the waveform data for which loop reading is designated. It is an operator for realizing.
[0026]
It should be noted that the waveform data obtained by A / D-converting an externally input audio signal (musical sound signal) by the analog / digital converter 12 is assigned to which pad 20e, and the start position, Whether to specify the loop start position, end position, and loop reading or one-shot reading is set by other operators indicated by reference numeral 20h.
[0027]
FIG. 2 conceptually shows the format of the storage area of the disk 14. The storage area of the disk 14 is divided into clusters each having a predetermined storage capacity, and each waveform data includes one or a plurality of waveform data. Are stored across multiple clusters.
[0028]
In FIG. 2, the clusters are drawn so as to be physically continuous, but need not be physically continuous. Therefore, with respect to each waveform data, a cluster storing the top part of the waveform data, a cluster storing the next part, a cluster storing the next part,... For each waveform data, it is managed in which cluster on the disk 14 each part of the waveform data is stored.
[0029]
The waveform data is always stored from the beginning of the cluster, and only one waveform data is stored in one cluster. Since the size of the waveform data is independent of the size of the cluster, the end of the waveform data is generally not the end of the cluster.
[0030]
Further, the cluster storing the waveform data has a start position (when the start position is before the loop start position) or a loop start position (the loop start position is before the start position) for each waveform data. .., In order from the cluster including the case), the cluster numbers 1, 2, 3,...
[0031]
Each waveform data specifies a start position, a loop start position, an end position, and loop reading or one-shot reading. From the data amount per sample of the waveform data and the data amount per cluster, regarding the sample at an arbitrary position of the waveform data, the cluster where the sample is stored and the relative position from the head of the cluster are unique. Will be determined.
[0032]
Next, the semiconductor memory 16 will be described. The semiconductor memory 16 corresponds to each of the 16 pads 20e in addition to the waveform data management area, bank management area, working area, and the like. Thus, the start buffer START for storing the start position portion of the waveform data assigned to each of these pads 20e, and the simultaneous reproduction of four sounds for sequentially reading the waveform data from the disk 14 when reproducing the waveform data are possible. The four-channel playback buffer PLAY is provided.
[0033]
FIG. 3 conceptually shows the format of the start buffer START described above. The start buffer START is provided with areas for two clusters corresponding to the 16 pads 20e of pad numbers 1 to 16, respectively, and each area is assigned with cluster number 1 and cluster number 2, respectively. Yes.
[0034]
FIG. 4 conceptually shows the format of the reproduction buffer PLAY described above. The reproduction buffer PLAY is provided with an area (reproduction channel) for four channels so that four-tone sound can be generated simultaneously. Channel numbers 1 to 4 are assigned to the respective reproduction channels. Further, these four playback channels are provided with areas for four clusters corresponding to the respective channels, and cluster numbers 1 to 4 are assigned to the respective areas.
[0035]
In this specification, in order to facilitate understanding of the present invention, an area corresponding to one cluster of the start buffer START and the reproduction buffer PLAY is also referred to as “cluster”.
[0036]
When the playback start is instructed by the operation of the pad 20e (pressing start), one of the playback channels is selected based on the assignment order (which will be described later) indicating the order of which playback channel is selected. Then, the stored contents of the start buffer START corresponding to the operated pad 20e are transferred to the reproduction buffer PLAY of the reproduction channel.
[0037]
In addition, the playback unit 18 is provided with four channels (playback channels) for playback, and each playback channel reads out the stored content of the corresponding playback channel of the playback buffer PLAY and plays it as an audio signal (musical signal). To do. When reproducing the stored contents of the reproduction buffer PLAY by the reproducer 18, the clusters of the reproduction buffer PLAY are read in the order of cluster numbers 1 to 4, and when the cluster number 4 has been read, Reads the cluster of cluster number 1.
[0038]
Each playback channel of the playback buffer PLAY has a start address ST and a data amount QT according to the waveform data played back on the playback channel, as exemplified by the playback channel of channel number 1 in FIG. Is set.
[0039]
Here, the start address ST indicates a relative position from the beginning of the cluster in the cluster to be reproduced, and is set based on the start position or the loop start position of the waveform data. The data amount QT indicates the data amount from the start position or the loop start position to the end position of the waveform data.
[0040]
Therefore, in the regenerator 18, in response to an instruction to start waveform data reproduction by operating the pad 20e (pressing start), each reproduction channel uses the waveform data stored in the first cluster of the reproduction buffer PLAY as the head of the cluster. Is started from a position as far as indicated by the start address ST, and thereafter, one sample of data is read at every sampling period and the value of the set data amount QT is decremented.
[0041]
Each reproduction channel notifies the CPU 10 when reading of each cluster of the reproduction buffer PLAY is completed and when the value of the data amount QT becomes zero.
[0042]
When the CPU 10 receives notification that the cluster reading has been completed, the CPU 10 reads and stores one cluster of waveform data to be stored next in the cluster from the disk 14, while the value of the data amount QT is When the notification that it has become 0 is received, if the waveform data is to be loop read, the notification that the cluster read is completed after the next start address ST and the data amount QT are set to the reproduction channel. Is issued, and if the waveform data is one-shot read, the playback channel is instructed to stop playback. The reproduction channel reads out from the position indicated by the start address ST, with the next cluster of the cluster that has been read up to now as the reproduction target cluster in accordance with the setting of the new start address ST and data amount QT. .
[0043]
Further, each reproduction channel stops reading (reproducing) the waveform data when receiving a reproduction stop instruction from the CPU 10.
[0044]
Next, processing when bank switching is instructed by operating the bank switching operator 20f will be described with reference to the bank switching processing flowchart shown in FIG.
[0045]
That is, when the bank switching operator 20f is operated to instruct bank switching, the processing shown in the bank switching processing flowchart of FIG. 5 is executed.
[0046]
In the bank switching process flowchart, first, in step S502, waveform data is assigned to each pad 20e corresponding to a newly designated bank.
[0047]
When the process of step S502 is completed, the process proceeds to step S504, and the waveform data of the cluster including the start position and the next cluster are read from the disk 14 with respect to the waveform data corresponding to each pad 20e, and the corresponding start buffer START is read. Store in one cluster and second cluster. However, regarding the waveform data composed of only one cluster, the waveform data is stored only in the first cluster when the waveform data is one-shot readout, and the first cluster and The same waveform data is stored in the second cluster.
[0048]
When the process of step S504 is completed, the process proceeds to step S506, instructing the reproduction channel whose hold flag hold (described later) of the regenerator 18 is “0” to stop the reproduction of the waveform data, and the reproduction channel is not set. The assignment order is updated in accordance with the use state.
[0049]
When the process of step S506 is terminated, the process of the flowchart of the bank switching process is terminated.
[0050]
Here, the hold flag hold indicates whether or not a hold state (described later) is set by the hold operator 20g and the hold pedal 22 provided for each reproduction channel. The reproduction channel whose hold flag hold is “0” indicates that it is not in the hold state, and the reproduction channel whose hold flag hold is “1” indicates that it is in the hold state. By this processing, the reproduction channel that is not in the hold state stops reading the waveform data.
[0051]
The hold flag hold is set to “0” in the initial state after the power is turned on, and is always set to “0” for the playback channel to which the waveform data for which one-shot reading is specified is assigned. ing.
[0052]
Therefore, when bank switching is performed, the reproduction of waveform data for which one-shot reading is designated among the waveform data being reproduced is unconditionally stopped.
[0053]
Next, referring to the pad-on process flowchart shown in FIG. 6, a process when one of the pads 20e is operated (pressed down) and a reproduction start instruction is given will be described.
[0054]
That is, when one of the pads 20e is operated (pressing is started) and a reproduction start instruction is given, the process shown in the flowchart of the pad-on process in FIG. 6 is executed.
[0055]
In the pad-on process flowchart, first, in step S602, the pad number (1 to 16) of the operated pad 20e is set to the pad number pad.
[0056]
When the process of step S602 is completed, the process proceeds to step S604, a playback channel to which the waveform data of the newly operated pad 20e is assigned is selected based on a predetermined assignment order, and the channel number of the selected playback channel is set to the channel number ch. Set. The assignment order may be determined by using a well-known assignment technique. For example, if there is a playback channel for which waveform data is not read out, the playback channel is selected, and a playback channel for which waveform data is not read out. If there is no, you can select the playback channel that started playback the earliest
When waveform data is being reproduced on all reproduction channels, a reproduction channel that is in a hold state, which will be described later, may be excluded from selection.
[0057]
Also, when waveform data is being played back on all playback channels, if there is a playback channel that is playing back waveform data for which one-shot readout is specified, the playback channel is selected from those playback channels, and loop readout is performed. If there is only a reproduction channel for reproducing the designated waveform data, the reproduction channel may be selected from the reproduction channels.
[0058]
If a playback channel being played back is selected, stop playback is instructed to that playback channel.
[0059]
When the process of step S604 is completed, the process proceeds to step S606, the cluster number on the disk 14 including the start position of the waveform data corresponding to the pad 20e with the pad number pad is obtained, the cluster number is read, and the cluster number rd_cl (ch) is read. The cluster number on the disk 14 including the loop start position of the waveform data corresponding to the pad 20e of the pad number pad is obtained, the cluster number is set to the loop start cluster number lst_cl (ch), and the pad number The cluster number on the disk 14 including the end position of the waveform data corresponding to the pad 20e of the pad is obtained, and the cluster number is set to the end cluster number ed_cl (ch).
[0060]
When the process of step S606 is completed, the process proceeds to step S608, and waveform data is transferred from the first cluster START [pad, 1] of the start buffer START of the pad number pad to the first cluster PLAY [ch of the reproduction buffer PLAY of the channel number ch. , 1]. That is, the waveform data of the first cluster of the start buffer START of the operated pad 20e is stored in the first cluster of the reproduction buffer PLAY of the selected reproduction channel.
[0061]
When the process of step S608 ends, the process proceeds to step S610, and based on the start position of the waveform data corresponding to the pad number pad, the relative position of the start position in the cluster including the start position is obtained, and the relative position is started. The address ST is used, and the data amount of the waveform data is obtained based on the start position and end position of the waveform data corresponding to the pad number pad. The data amount is defined as the data amount QT, and the start address ST and the data amount are determined. QT is set as a playback channel ch, this playback channel ch is instructed to start playback from the start address ST of the first cluster, and any playback channel is associated with the playback channel ch being used. The waveform data of any pad 20e None or not to update the management information and assign rank shows the are.
[0062]
As a result, the reproduction of the waveform data assigned to the operated pad 20e is started in the reproduction channel ch.
[0063]
When the process of step S610 ends, the process proceeds to step S612, where the waveform data assigned to the pad 20e with the pad number pad is one-shot read, and “read cluster number rd_cl (ch) = end cluster number”. It is determined whether or not “ed_cl (ch)”.
[0064]
In step S612, it is determined that the waveform data assigned to the pad 20e with the pad number pad is one-shot read and “read cluster number rd_cl (ch) = end cluster number ed_cl (ch)”. If so, the pad-on process is terminated.
[0065]
This is to be reproduced when the cluster at the read position at the start of reading the waveform data and the cluster at the end position match, that is, when the waveform data is stored in only one cluster. This is because all the waveform data has already been stored in the reproduction buffer, and therefore, when performing one-shot reading, it is not necessary to store additional waveform data in the reproduction buffer.
[0066]
On the other hand, in step S612, the waveform data assigned to the pad 20e with the pad number pad is one-shot reading, and “reading cluster number rd_cl (ch) = end cluster number ed_cl (ch)” is not satisfied. If it is determined, step S614 follows and the waveform data is transferred from the second cluster START [pad, 2] of the start buffer START of the pad number pad to the second cluster PLAY [ch of the reproduction buffer PLAY of the channel number ch. , 2]. That is, the waveform data of the second cluster of the start buffer of the operated pad 20e is stored in the second cluster of the reproduction buffer of the selected reproduction channel.
[0067]
When the process of step S614 ends, the process proceeds to step S616, the read cluster number rd_cl (ch) is incremented, and the write cluster number wr_cl (ch) of the start buffer of the pad number ch is set to 2.
[0068]
Therefore, the processing up to step S616 described above writes waveform data to the first cluster and the second cluster of the reproduction buffer, and increases the read cluster number and the write cluster number, respectively. In subsequent steps, a process of writing waveform data to the third cluster and the fourth cluster of the reproduction buffer is performed.
[0069]
That is, when the process of step S616 is completed, the process proceeds to step S618, and it is first determined whether or not the write cluster number wr_cl (ch) is “4”. If it is determined in step S618 that the write cluster number wr_cl (ch) is “4”, the waveform data has been written into the third cluster and the fourth cluster of the reproduction buffer. finish.
[0070]
On the other hand, if it is determined in step S618 that the write cluster number wr_cl (ch) is not “4”, the process proceeds to step S620, where “read cluster number rd_cl (ch) = end cluster number ed_cl (ch)”. Judge whether there is.
[0071]
If it is determined in step S620 that “read cluster number rd_cl (ch) = end cluster number ed_cl (ch)”, the process proceeds to step S622, and the waveform data assigned to the pad 20e with the pad number pad is obtained. Then, it is determined whether or not the one-shot reading is performed.
[0072]
If it is determined in step S622 that the waveform data assigned to the pad 20e with the pad number pad is one-shot reading, it is not necessary to store additional waveform data in the playback buffer. -End the on process.
[0073]
On the other hand, if it is determined in step S620 that “read cluster number rd_cl (ch) = end cluster number ed_cl (ch)” is not satisfied, the read cluster number rd_cl (ch) is incremented (step S624). The write cluster number wr_cl (ch) is incremented (step S626), and then the waveform data corresponding to the read cluster number rd_cl (ch) of the pad number pad is read from the disk 14, and the write cluster number wr_cl of the playback buffer of the playback channel ch is read. The data is stored in the cluster indicated by (ch) (step S628), and the process returns to step S618.
[0074]
If it is determined in step S622 that the waveform data assigned to the pad 20e with the pad number pad is not one-shot read, the loop start cluster number lst_cl (ch) is read and the cluster number rd_cl is read. (Ch) is set (step S630), and the write cluster number wr_cl (ch) is further incremented (step S626), and then the waveform data corresponding to the read cluster rd_cl (ch) of the pad number pad is read from the disk 14. Then, it is stored in the cluster indicated by the write cluster number wr_cl (ch) of the reproduction buffer of the reproduction channel ch (step S628), and the process returns to step S618.
[0075]
In this way, necessary waveform data is stored in the reproduction buffer in accordance with the operated pad 20e, and reproduction is started.
[0076]
Next, referring to the pad-off process flowchart shown in FIG. 7, a process when any one of the pads 20e is operated (depressed) and a reproduction stop instruction is given will be described.
[0077]
That is, when any of the pressed pads 20e is operated (depressed) and a playback stop instruction is given, the process shown in the flowchart of the pad-off process in FIG. 7 is executed.
[0078]
In the flowchart of the pad-off process, first, in step S702, the pad number (1 to 16) of the pad 20e that has been operated (depressed) is set to the pad number pad.
[0079]
When the process of step S702 is completed, the process proceeds to step S704, where it is determined whether or not there is a reproduction channel that is reproducing the waveform data of the operated pad 20e (depressed).
[0080]
If it is determined in step S704 that there is no reproduction channel for reproducing the waveform data of the operated pad 20e (depressed), this pad-off process is terminated.
[0081]
On the other hand, if it is determined in step S704 that there is a playback channel that is playing back the waveform data of the pad 20e that has been operated (press release), the process proceeds to step S706, and the waveform of the pad 20e that has been operated (press release). Set the channel number of the playback channel that is reproducing data to the channel number ch.
[0082]
When the process of step S706 ends, the process proceeds to step S708 to determine whether or not the waveform data assigned to the pad 20e with the pad number pad is loop read.
[0083]
If it is determined in step S708 that the waveform data assigned to the pad 20e with the pad number pad is not loop reading, the pad-off process is terminated.
[0084]
On the other hand, if it is determined in step S708 that the waveform data assigned to the pad 20e with the pad number pad is loop reading, the process proceeds to step S710, and the hold flag hold (ch) for the channel number ch is set. It is determined whether or not “hold flag hold (ch) = 1”.
[0085]
If it is determined in step S710 that the hold flag hold (ch) of the channel number ch is “hold flag hold (ch) = 1”, the pad-off process is terminated. That is, in this case, even if the operation of pressing the pad 20e is stopped, the reproduction of the waveform data is continued.
[0086]
If it is determined in step S710 that the hold flag hold (ch) of the channel number ch is not “hold flag hold (ch) = 1”, the process proceeds to step S712 to instruct the playback channel ch to stop playback. As the playback channel becomes inactive, the management information indicating which waveform data of which pad 20e is being played back in which playback channel and the assignment order are changed.
[0087]
Next, a process when the hold operator 20g or the hold pedal 22 is operated will be described with reference to the flowchart of the hold-on process shown in FIG.
[0088]
That is, when the hold operator 20g or the hold pedal 22 is operated, the process shown in the flowchart of the hold-on process is executed.
[0089]
In the hold / on process flowchart, first, in step S802, it is determined whether or not there is a pad 20e being operated (pressed).
[0090]
If it is determined in step S802 that there is a pad 20e being operated (pressed), the process proceeds to step S804, and the waveform data assigned to the pad 20e being operated (pressed) is loop reading. Determine whether or not.
[0091]
If it is determined in step S804 that the waveform data assigned to the pad 20e being operated (pressed) is not loop reading, the hold-on process is terminated. That is, regarding the reproduction of the one-shot readout waveform data, the operation of the hold operator 20g and the hold pedal 22 has no influence.
[0092]
On the other hand, if it is determined in step SS804 that the waveform data assigned to the pad 20e being operated (pressed) is loop reading, the process proceeds to step S806, and the waveform data of the pad 20e is being reproduced. Is set to “hold (ch) = 1”, and this hold-on process is terminated. That is, when the hold operator 20g or the hold pedal 22 is operated while operating (pressing) the pad 20e for instructing the reproduction of the waveform data for loop reading, the reproduction channel for reproducing the waveform data is in the hold state. Thus, even if the operation of the pad 20e is stopped (press release is released), the reproduction of the waveform data is continued.
[0093]
If the hold operator 20g or the hold pedal 22 is operated while operating (pressing) the plurality of pads 20e, the same processing is performed for each pad 20e being operated (pressed).
[0094]
If it is determined in step S802 that there is no pad 20e that is being operated (pressed), that is, the hold operator 20g or the hold pedal 22 is operated without any pad 20e being operated (pressed). If YES in step S808, the flow advances to step S808 to instruct the playback channel ch set to “hold (ch) = 1” to stop playback. The management information and the assignment order indicating which pad 20e waveform data is being reproduced on the reproduction channel are updated.
[0095]
When the process of step S808 ends, the process proceeds to step S810, where “hold (ch) = 0” is set, and this hold-on process ends. That is, when the hold operator 20g or the hold pedal 22 is operated without operating any of the pads 20e, the hold state is released with respect to the playback channel that is in the hold state, and waveform data is reproduced on the playback channel. Will stop.
[0096]
Next, referring to a flowchart of the cluster read end process shown in FIG. 9, a process when it is notified from one of the reproduction channels that the cluster read has been completed will be described.
[0097]
That is, when it is notified from one of the playback channels that the cluster read has been completed, the process shown in the flowchart of the cluster read end process is executed.
[0098]
In the flowchart of the cluster reading end process, first, in step S902, the channel number of the reproduction channel for which the cluster reading has been completed is set to the channel number ch, and the pad number corresponding to the waveform data being reproduced on this reproduction channel is set. Set to pad number pad.
[0099]
When the process of step S902 is completed, the process proceeds to step S904, and it is determined whether or not “read cluster number rd_cl (ch) = end cluster number ed_cl (ch)”.
[0100]
If it is determined in step S904 that “read cluster number rd_cl (ch) = end cluster number ed_cl (ch)”, the process proceeds to step S906, and the waveform data assigned to the pad with the pad number pad is obtained. Then, it is determined whether or not the one-shot reading is performed.
[0101]
If it is determined in step S906 that the waveform data assigned to the pad of the pad number pad is one-shot reading, it is not necessary to store additional waveform data in the reproduction buffer. End the termination process.
[0102]
On the other hand, if it is determined in step S904 that “read cluster number rd_cl (ch) = end cluster number ed_cl (ch)”, the process proceeds to step S908, and the read cluster number rd_cl (ch) is incremented.
[0103]
If it is determined in step S906 that the waveform data assigned to the pad with the pad number pad is not one-shot read, the process proceeds to step S910, where the loop start cluster lst_cl (ch) is read and the cluster is read. Set to the number rd_cl (ch).
[0104]
Then, when the process of step S908 or step S910 is completed, the process proceeds to step S912, and it is determined whether or not the write cluster number wr_cl (ch) is “4”.
[0105]
If it is determined in step S912 that the write cluster number wr_cl (ch) is not “4”, the process advances to step S914 to increment the write cluster number wr_cl (ch).
[0106]
On the other hand, if it is determined in step S912 that the write cluster number wr_cl (ch) is “4”, the process proceeds to step S916, and “1” is set to the write cluster number wr_cl (ch).
[0107]
When step S914 or step S916 is completed, the process proceeds to step S918, where the waveform data corresponding to the read cluster number rd_cl (ch) of the pad number pad is read from the disk 14, and the write cluster number of the reproduction buffer of the channel number ch is read. The data is stored in the cluster indicated by wr_cl (ch), and the cluster read end process is terminated.
[0108]
In this way, when the cluster reading is finished in any one of the reproduction channels, the waveform data of the next cluster is stored in the cluster that has been read out.
[0109]
Next, referring to the flowchart of the “QT = 0” process shown in FIG. 10, a process when one of the playback channels is notified that the value of the data amount QT has become “0” will be described.
[0110]
That is, when it is notified from any playback channel that the value of the data amount QT has become “0”, the processing shown in the flowchart of this “QT = 0” processing is executed.
[0111]
In the flowchart of the “QT = 0” process, first, in step S1002, the channel number of the reproduction channel whose data amount QT is “0” is set as the channel number ch.
[0112]
When the process of step S1002 ends, the process proceeds to step S1004, and it is determined whether or not the waveform data being reproduced on the reproduction channel whose data amount QT is “0” is loop readout.
[0113]
If it is determined in step S1004 that the waveform data being reproduced on the reproduction channel whose data amount QT is “0” is loop read, the process proceeds to step S1006, and the reproduction channel ch is changed to that data. Based on the loop start position of the waveform data being played back on the playback channel, the relative position of the loop start position in the cluster including the loop start position is obtained and set as the start address ST. Based on the loop start position and end position, the waveform data amount of the waveform data is obtained, the waveform data amount is set as the data amount QT, the start address ST and the data amount QT are set in the reproduction channel ch, and Of the cluster that was playing up to now for the playback channel ch 9 is issued as a cluster to be reproduced, a notification that the cluster read is completed is issued, and the process of the flowchart shown in FIG. 9 is performed in response to the notification that the cluster read is completed. The “QT = 0” process is terminated.
[0114]
On the other hand, if it is determined in step S1004 that the waveform data being reproduced on the reproduction channel whose data amount QT is “0” is not loop read, the process proceeds to step S1008, and the reproduction channel ch is selected. Instructing to stop the reproduction, the management information indicating which waveform data of which pad 20e is being reproduced in which reproduction channel when the reproduction channel is not in use and the update order are updated. = 0 ”process is terminated.
[0115]
Therefore, in the above-described embodiment, when bank switching is instructed by operating the bank switching operator 20f, waveform data is assigned to each pad 20e according to the newly designated bank according to the bank switching processing flowchart ( Step S502). At this time, waveform data for one cluster or two clusters including the start position of the waveform data is read from the disk 14 in accordance with the start position set for each waveform data assigned to each pad 20e. It is stored in the start buffer START (step S504).
[0116]
That is, since the waveform data is stored in the start buffer START from the cluster including the start position of the disk 14, it is sufficient that the start buffer START has a minimum storage capacity.
[0117]
When the pad 20e is operated (pressed), the waveform data of the start portion of the waveform data of the pad 20e operated (pressed) is transferred from the start buffer START to the reproduction buffer PLAY according to the pad-on process flowchart ( In step S608), waveform data reading is started from the start position in the reproduction buffer PLAY (step S610).
[0118]
Accordingly, even if a place other than the top of the waveform data is designated as the start position, the waveform is read from the start position without a time delay according to the operation of the pad 20e.
[0119]
Since waveform data for two clusters is stored in the start buffer START as necessary (step S504), even when the start position is the end of the cluster including the start position, the reproduction of the cluster is performed. When the processing is completed, the waveform data of the next cluster has already been prepared, and the waveform data can be reproduced smoothly.
[0120]
The start buffer START may be provided with a storage area for three clusters or more.
[0121]
After the start of reading the waveform data, the waveform data that has not yet been read out is read from the disk 14 in cluster units in the empty area of the reproduction buffer PLAY (the area where the reading has been completed) and sequentially stored ( Step S618 to Step S628). That is, when reading of a certain cluster is completed in the reproduction buffer PLAY, the cluster is treated as an empty area, and new waveform data is stored.
[0122]
Similarly, when waveform data for which loop reading is designated is read to the end position, the cluster is treated as an empty area, and new waveform data is stored.
[0123]
Here, in the case of waveform data for which loop reading is designated, when the waveform data is stored in the reproduction buffer PLAY up to the cluster including the end position, the cluster including the loop start position is stored in the reproduction buffer PLAY from the next time. To do.
[0124]
When the waveform data is reproduced to the end position, reading is continued from the position indicated by the loop start position of the next cluster.
[0125]
Therefore, loop reproduction is possible based on the loop start position and end position, and the reproduction buffer only needs to have a minimum storage capacity.
[0126]
In addition, when playing a certain cluster, the storage of waveform data in the next cluster has already been completed, so even if the loop end position is closer to the beginning of the cluster including that end position, When the reproduction of the cluster is completed, the waveform data of the next cluster is already prepared, and the waveform data is reproduced smoothly.
[0127]
In the embodiment described above, a storage area for four clusters is provided as the reproduction buffer PLAY. However, a storage area for at least three clusters is sufficient.
[0128]
Note that the waveform data for which one-shot reading is designated is stopped when the waveform data is played back to the end position, regardless of the operation (depressing pressing) of the corresponding pad 20e.
[0129]
For waveform data for which loop reading is designated, reproduction is stopped when the operation of the corresponding pad 20e is stopped (press release).
[0130]
However, regarding the waveform data for which loop reading is designated, when the hold operator 20g or the hold pedal 22 is operated while operating the corresponding pad 20e, the hold data is set to the hold state according to the flowchart of the hold-on process (step S806), the reproduction is continued even if the operation of the corresponding pad 20e is stopped.
[0131]
In this state, when the hold operator 20g or the hold pedal 22 is operated while operating the pad 20e corresponding to another waveform data for which loop reading is designated, this waveform data is also added to the previous waveform data. The hold state is set.
[0132]
When the hold operator 20g or the hold pedal 22 is operated without operating any of the pads 20e, the hold state is canceled and the reproduction of the waveform data that has been in the hold state until then is stopped.
[0133]
Even when the bank is switched during the hold state, the waveform data in the hold state is continuously reproduced. At this time, since new waveform data is stored in the start buffer START corresponding to the new bank, if the pad 20e is operated in this state, the waveform data in the previous bank is loop-reproduced, and the new bank data is stored. Waveform data can be played back.
[0134]
The embodiment described above may be modified as shown below.
[0135]
(1) In the embodiment described above, the waveform data is transferred from the start buffer START to the reproduction buffer PLAY to reproduce the reproduction buffer PLAY. However, the present invention is not limited to this. The waveform data stored in the start buffer START is read from the start buffer START, and the subsequent waveform data is read from the disk 14 instead of being transferred from the buffer START to the reproduction buffer PLAY to reproduce the reproduction buffer PLAY. When the waveform data stored in the start buffer START is read after being transferred to the PLAY, the reproduction buffer PLAY may be reproduced.
[0136]
(2) In the embodiment described above, the waveform data is transferred from the start buffer START to the reproduction buffer PLAY to reproduce the reproduction buffer PLAY. However, the present invention is not limited to this. The reproduction buffer PLAY is not transferred from the buffer START to the reproduction buffer PLAY and reproduced, but the reproduction buffer PLAY is provided corresponding to each pad 20e (the start buffer START is not provided), and the start portion of the waveform data is previously provided. You may make it memorize | store in the reproduction | regeneration buffer PLAY. When the reproduction is finished, the start portion of the waveform data is stored again in the reproduction buffer PLAY. (3) In the above-described embodiment, the waveform data for which loop reading is designated is reproduced at the time when the operation of the corresponding pad is stopped (when the hold is set, the hold is released). Although it is stopped, playback is stopped when the waveform data is played back to the end position after the pad operation is canceled (press release) (after the hold is released if it is in the hold state). Alternatively, the playback may be stopped when the operation of the pad 20e is stopped (press release) (or when the hold is released), or the end position of the waveform data after the pad operation is stopped is played back. It may be possible to arbitrarily select whether to stop playback at the time. Note that when it is possible to arbitrarily set whether playback is stopped under any condition, all waveform data may be set collectively, or may be set for each waveform data or pad 20e. May be.
[0137]
(4) In the above-described embodiment, the hold flag hold is provided for each reproduction channel so as to manage whether or not each musical sound being reproduced is in the hold state. However, the present invention is not limited to this. Of course, if it is possible to manage whether or not each musical sound being played is in the hold state, it may be managed in another form. For example, when a hold flag hold is provided for each pad 20e and the hold operator 20g or hold pedal 22 is operated while the pad 20e is being operated, the hold flag hold for that pad 20e is When the hold operator 20g or the hold pedal 22 is operated without operating the pad 20e, the hold flag hold of all the pads 20e is lowered, and the operation (pressing) of the pad 20e is stopped. In some cases, if the hold flag hold of the pad 20e is set, it may not be instructed to stop the reproduction of the corresponding waveform data. In place of the pad 20e, a hold flag hold may be provided for each waveform data.
[0138]
(5) In the above-described embodiment, different waveform data is assigned to each pad 20e as a performance operator instructing reproduction of a musical tone. However, the same waveform data is assigned to each pad 20e as a performance operator. However, waveform data having different pitches may be assigned.
[0139]
(6) In the above-described embodiment, the stored contents of the start buffer START are used only when the head portion of the waveform data is reproduced at the time of pad operation. When stored in the buffer START, loop reading may be performed using the stored contents of the start buffer START.
[0140]
For example, when the waveform data of the loop portion is already stored in the start buffer START, the waveform data is transferred from the start buffer START instead of being transferred from the disk 14 to the reproduction buffer PLAY. In this way, the transfer is completed in a shorter time than when the waveform data is read from the disk 14 and transferred to the reproduction buffer PLAY.
[0141]
This is particularly effective in the following cases. That is, when loop reading is performed, it is necessary that at least the first portion of the waveform data of the loop portion for the next reproduction is prepared in the reproduction buffer PLAY before the reproduction of the currently reproduced loop portion is completed. However, the loop start position is at the end of the previous cluster and the end position is in the rear cluster even if the loop part is only for one cluster or the loop part spans two clusters. Since the playback of the loop portion is completed in a short time, the transfer is not in time, and the playback buffer from the waveform data of the loop portion for the next playback is reproduced from the disk 14 until the end of the playback. There is a possibility that the transfer to PLAY does not end.
[0142]
In this case, as described above, by transferring the waveform data from the start buffer START to the reproduction buffer PLAY, it is possible to greatly reduce the possibility that the transfer will not be in time. Hereinafter, a case where such a modification is performed will be described.
[0143]
First, for each pad 20e, a cluster number indicates in which cluster on the disk 14 the waveform data stored in cluster 1 and cluster 2 of the start buffer START of that pad 20e is stored. A start 1 cluster number ST1-cl (pad) and a start 2 cluster number ST2-cl (pad) are provided.
[0144]
In the bank switching process, when the waveform data is stored from the disk 14 in the start buffer START of each pad 20e, the start 1 / cluster number ST1-cl (pad), the start 2 / cluster number ST2-cl (pad) ) Is added to set the cluster number on the disk 14 corresponding to. In the pad-on process, whether the waveform data assigned to the operated pad 20e is one-shot read before the process of step S628, that is, the process of storing the waveform data in the reproduction buffer PLAY. If it is determined that the one-shot reading is performed, the process proceeds to step S628 as in the above-described embodiment. On the other hand, when it is determined that the one-shot read is not performed, that is, the loop read is performed, the cluster indicated by the read cluster number rd_cl (ch) is the start 1 / cluster number ST1-cl (pad) or start 2 / cluster number. It is determined whether or not it matches the cluster indicated by any of ST2-cl (pad).
[0145]
Here, if it is determined that they match, it indicates that the waveform data to be stored in the reproduction buffer PLAY has already been stored in the start buffer START. The waveform data is read out from the cluster of the start buffer START shown and stored in the reproduction buffer PLAY, and the process returns to step S618.
[0146]
The cluster reading process is similarly modified. That is, before the process of step S918, that is, the process of storing the waveform data in the reproduction buffer PLAY, the process of determining whether or not the waveform data assigned to the operated pad 20e is one-shot readout. In addition, if it is determined that the one-shot read is performed, the process proceeds to step S918 as in the embodiment. On the other hand, when it is determined that the one-shot read is not performed, that is, the loop read is performed, the cluster indicated by the read cluster number rd_cl (ch) is the start 1 / cluster number ST1-cl (pad) or start 2 / cluster number. It is determined whether or not it matches the cluster indicated by any of ST2-cl (pad).
[0147]
Here, if it is determined that they match, it indicates that the waveform data to be stored in the reproduction buffer PLAY has already been stored in the start buffer START. The waveform data is read from the cluster of the start buffer START shown and stored in the reproduction buffer PLAY, and the cluster read processing is terminated.
[0148]
Note that the modification described above may be combined with the modification described in Modification (1) above.
[0149]
That is, when the waveform data of the loop portion is stored in the start buffer START, the waveform data is not transferred from the start buffer START to the reproduction buffer PLAY and reproduced on the reproduction buffer PLAY. The buffer START is directly reproduced.
[0150]
In the above-described embodiment, the waveform data in the hold state is continuously reproduced even when the bank is switched during the reproduction. However, when the waveform data is changed as described above, When the bank is switched, the contents of the start buffer START are rewritten to those corresponding to the new bank. Therefore, if loop reading is performed using the contents of the start buffer START, normal reproduction cannot be performed.
[0151]
In order to cope with this, when bank switching is performed, the loop reading based on the start buffer START is prohibited, or the pad corresponding to the waveform data in the hold state even if the bank switching instruction is given. Regarding 20e, rewriting of the contents of the start buffer START is suspended, loop reading based on the contents of the start buffer START is continued, and when the hold state is released, the contents of the held start buffer START are rewritten. Can be considered.
[0152]
(7) In the embodiment described above, new waveform data is transferred from the disk 14 to the reproduction buffer PLAY during the reproduction of the waveform data. However, when the loop portion is short and all the data is stored in the reproduction buffer PLAY, the stored reproduction buffer PLAY may be repeatedly read without transferring the waveform data from the disk 14 to the reproduction buffer PLAY. . By doing so, it is possible to prevent a situation in which it is not in time to transfer the waveform data of the loop portion for the next playback from the disk 14 to the playback buffer PLAY until the end of the current playback of the waveform data of the loop portion. Can do. Specifically, it may be modified as follows.
[0153]
That is, first, for each pad 20e, the number of clusters occupied by the loop portion of the waveform data assigned to the pad 20e is stored, and the end position of the waveform data assigned to each pad 20e in the bank switching process. Add a process to set this variable based on the difference between and the loop start position.
[0154]
In the cluster reading end process, when it is determined in step S906 that the one-shot reading is not performed, that is, the loop reading waveform data is stored in the reproduction buffer PLAY up to the end position, the reproduction is performed based on the above-described variables. Added processing to determine whether or not the number of clusters occupied by the loop portion of the waveform data assigned to the channel is equal to or less than the number of clusters in the reproduction channel (in the above-described embodiment, “4”). However, if it is determined that it is not the following, the process proceeds to step S910 as in the above-described embodiment. On the other hand, if it is determined that the following is true, the cluster read processing is terminated as it is.
[0155]
Further, in the “QT = 0” process, the processing content of step S1006 is changed to the start address ST and the data amount QT for the playback channel, and the number of clusters indicated by the above-described variables from the clusters that have been played so far. A cluster that is one number smaller than the previous cluster is changed to a process that designates the next cluster as a cluster to be reproduced.
[0156]
(8) In the above-described embodiment, the hold pedal 22 is provided in the waveform data reproducing apparatus main body. However, the connection terminal for receiving a signal from an external hold pedal is provided in the waveform data reproducing apparatus. Good,
Further, in the above-described embodiment, the performance is performed by the pad 20e, the hold operator 20g, the bank switching operator 20f, etc. provided in the waveform data reproducing apparatus main body, which corresponds to the operation of these operators. The operation signal may be input from an external device using a communication means such as MIDI.
[0157]
【The invention's effect】
Since the present invention is configured as described above, it is possible to select a musical sound to be held and a musical sound that is not to be held, and while any one of the musical sounds is in the holding state, It has an excellent effect that it is possible to put another musical sound in the hold state.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the overall configuration of a waveform data reproducing apparatus as an example of an embodiment of an electronic musical instrument according to the present invention.
FIG. 2 is an explanatory diagram conceptually showing a format of a storage area of a disc.
FIG. 3 is an explanatory diagram conceptually showing a format of a start buffer START.
FIG. 4 is an explanatory diagram conceptually showing a format of a reproduction buffer PLAY.
FIG. 5 is a flowchart of bank switching processing.
FIG. 6 is a flowchart of pad-on processing.
FIG. 7 is a flowchart of pad-off processing.
FIG. 8 is a flowchart of hold-on processing.
FIG. 9 is a flowchart of cluster read end processing;
FIG. 10 is a flowchart of a “QT = 0” process.
[Explanation of symbols]
10 Central processing unit (CPU)
12 Analog / digital converter (A / D)
14 discs
16 Semiconductor memory
18 Regenerator
20 Operation panel
20a Start position specification operator
20b Loop start position specification operator
20c End position specification operator
20d loop / one-shot designator
20e pad
20f Bank switching operator
20g Hold button
20h Other controls
22 Hold pedal
24 Digital / analog converter (D / A)

Claims (2)

A plurality of performance controls each associated with a musical sound to be generated based on the operation;
A hold operator for holding the musical sound generated based on the operation of the performance operator; and
In response to the start of the operation of the performance operator, the performance operator corresponding to the musical sound that is not in the hold state is instructed to start generation of a musical sound associated with the performance operator that has been started. First instruction means for instructing to stop the generation of the musical sound associated with the operation controller for which the operation has been stopped,
When the hold operator is operated during operation of the performance operator, the musical operation associated with the performance operator being operated is instructed to be held, and the performance operation is performed. An electronic musical instrument comprising: a second instructing unit that instructs generation to be stopped with respect to a musical tone that is in a hold state when the hold operator is operated when none of the children is operated. The electronic musical instrument according to claim 1,
Storage means for storing information indicating whether each musical sound being generated is in a hold state;
The first instruction means determines whether or not each musical sound is in a hold state based on the stored contents of the storage means,
The second instruction means sets the musical sound associated with the performance operator being operated to a hold state when the hold operator is operated during operation of the performance operator. Regarding a musical sound that is stored in the storage means and is stored in the storage means when the hold operator is operated when none of the performance operators are operated An electronic musical instrument that instructs to stop generation.

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