JP2006023594A - Recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recorder whose manufacturing cost can be reduced, and in which data control for undo can be simplified. <P>SOLUTION: In the recorder, a musical sound before editing and a musical sound after editing are divided into block units, respectively to be stored in a track 0 and a track 1 each of which consists of a plurality of blocks. As a result, although execution of undo is limited to one time, the storage capacity for storing the musical sounds is restricted to a small capacity and the manufacturing cost of the recorder is reduced. Moreover, in the recorder, since the musical sound before the editing can be read out, by only returning the selection information of a selection flag to an original state according to write-in information stored in a current flag, data control for undo is simplified. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a recorder that can reduce the manufacturing cost and simplify data management for undo.

  Conventionally, overdubbing is performed by recording a predetermined phrase, playing back the recorded phrase, playing along with the playback sound, and synthesizing and recording the playback sound and a new performance. Recorders that can be used are known.

  On the other hand, with this overdubbable recorder, the performance may be mistaken when overdubbing is executed, and the wrong performance and the reproduced sound may be synthesized. Therefore, a recorder equipped with a function called undo that cancels overdubbing and restores the original state is also known.

  However, since a recorder equipped with this undo function stores a history of operation procedures, there is a problem that data management is difficult and a burden is imposed on software. Therefore, the following Patent Document 1 discloses a technique for storing the edited track data as a new track independent of the track data before editing each time editing (overdubbing) is performed. Has been.

According to the technique disclosed in Patent Document 1, it is only necessary to select a corresponding track in response to an undo instruction, so that complicated data management is not required and the software burden can be reduced. .
JP 2002-124022 (paragraph 0009, etc.)

  However, in the technique disclosed in Patent Document 1 described above, since the track data after editing is stored while the data of the track before editing is stored every time overdubbing is performed, a large storage capacity is required. There was a problem that the manufacturing cost increased.

  Further, since performance when overdubbing is often performed in real time, it is desired to further simplify data management for undo.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a recorder that can reduce manufacturing costs and simplify data management for undo.

  In order to achieve this object, the recorder according to claim 1 is composed of a plurality of blocks, and each of the blocks of the first storage means includes first storage means for storing musical sounds by dividing each block. Each of the corresponding blocks of the second storage means configured by a plurality of corresponding blocks, in which the musical sound is divided and stored by each block, and the first and second storage means correspond to which block. The third storage means for storing the selection information indicating whether the musical sound stored in the memory is read out, the reading means for reading out the musical sound according to the selection information stored in the third storage means, and the reading means An instruction means for instructing synthesis of a newly input musical sound in a predetermined section of the received musical sound, and a block-unit musical sound including the section instructed by the instruction means Generating means for synthesizing the synthesized musical sound and the newly input musical sound to generate a synthetic musical tone; and the synthesized musical sound synthesized by the generating means from a predetermined block of the first storage means When read, the synthesized musical sound is written into a block of the second storage means corresponding to the predetermined block of the first storage means, and the synthesized musical sound is read from the predetermined block of the second storage means. In this case, writing means for writing the synthesized musical sound into a block of the first storage means corresponding to a predetermined block of the second storage means, and the writing means writes the synthesized musical sound to the first or second The fourth storage means for storing the write information indicating that the data is written in the predetermined block of the storage means for each corresponding block of the first and second storage means, and the fourth storage means. Writing Depending on the distribution and a changing means for changing the selection information stored in said third memory means.

  According to a second aspect of the present invention, in the recorder according to the first aspect, the changing means is the selection information stored in the third storage means according to the write information stored in the fourth storage means. First inversion means for inverting the second information, and second inversion means for inverting the selection information in the state inverted by the first inversion means again according to the write information stored in the fourth storage means, It has.

  According to a third aspect of the present invention, in the recorder according to the first or second aspect, the reading means repeatedly reads the musical sound read according to the selection information stored in the third storage means.

  The recorder according to claim 4 is constituted by a plurality of blocks, and is constituted by a first storage means for dividing and storing musical sounds by each block, and a plurality of blocks corresponding to each block of the first storage means. For each block corresponding to the second storage means for storing the musical sound by dividing each of the blocks, and the first and second storage means, the musical sound stored in which of the corresponding blocks is stored. For each block corresponding to the third storage means for storing the selection information indicating whether to read and the first and second storage means, the musical sound stored in one of the corresponding blocks is read. A reading means for outputting, an instruction means for instructing synthesis of a newly input musical sound in a predetermined section of the musical sound read by the reading means, and a section indicated by the instruction means. A generating unit for generating a synthesized tone by synthesizing a synthesized tone and a newly input tone as a synthesized tone for a block unit, and a synthesized tone synthesized by the generating unit. When the synthesized musical sound is read from a predetermined block of the storage means, the synthesized musical sound is written into a block of the second storage means corresponding to the predetermined block of the first storage means, and the synthesized musical sound is written to the second storage. When reading from a predetermined block of the means, the synthetic musical sound is written by the writing means for writing the synthetic musical sound into the block of the first storage means corresponding to the predetermined block of the second storage means, and the writing means. Change means for changing the selection information corresponding to the block of the first or second storage means, the selection information changed by the change means, and the change means. Fourth storage means for storing selection information excluding selection information for each corresponding block of the first and second storage means, and the selection information stored in the fourth storage means or the third storage means And switching means for switching so that the reading means reads out the musical sound according to the selection information stored in the storage means.

  According to a fifth aspect of the present invention, in the recorder according to the fourth aspect, the reading means repeatedly reads the musical sound read according to the selection information stored in the third or fourth storage means.

  According to the recorder of claim 1, the synthesized musical sound generated by the generating means corresponds to the predetermined block of the first storage means when the synthesized musical sound is read from the predetermined block of the first storage means. When the synthesized musical tone is read from the predetermined block of the second storage means, the first storage means corresponding to the predetermined block of the second storage means is written in the block of the second storage means. Written to the block. Therefore, every time editing is performed, only the musical sound before editing and the musical sound after editing are efficiently stored. Therefore, although undoing is limited to one time, the storage capacity for storing musical sounds can be limited to a small capacity, and the manufacturing cost can be reduced.

  Further, the edited musical tone can be read out only by changing the selection information stored in the third storage means by the changing means in accordance with the write information stored in the fourth storage means.

  Furthermore, the musical sound before editing can be read out simply by returning the changed selection information to the original state again according to the writing information stored in the fourth storage means, and simple data management for undo. There is an effect that can be executed under.

  According to the recorder of the second aspect, in addition to the effect achieved by the recorder of the first aspect, the selection information stored in the third storage unit according to the write information stored in the fourth storage unit The musical tone after editing can be read out only by inverting the signal by the first inverting means. Furthermore, the musical sound before editing can be read out only by inverting the inverted selection information again by the second inverting means in accordance with the writing information stored in the fourth storage means. That is, there is an effect that the undo can be executed by a simple process of inverting the selection information by the second inverting means according to the writing information.

  According to the recorder of the third aspect, in addition to the effect produced by the recorder of the second aspect, the reading means repeatedly reads the musical sound read according to the selection information stored in the third storage means. There is no need to store it many times, the storage capacity of the storage means can be limited to a small capacity, and there is an effect that it can be manufactured at low cost.

  According to the recorder of claim 4, the synthesized musical sound generated by the generating means corresponds to the predetermined block of the first storage means when the synthesized musical sound is read from the predetermined block of the first storage means. When the synthesized musical tone is read from the predetermined block of the second storage means, the first storage means corresponding to the predetermined block of the second storage means is written in the block of the second storage means. Written to the block. Therefore, every time editing is performed, only the musical sound before editing and the musical sound after editing are efficiently stored. Therefore, although undoing is limited to one time, the storage capacity for storing musical sounds can be limited to a small capacity, and the manufacturing cost can be reduced.

  Further, by reading the musical sound according to the selection information stored in the fourth storage means, it is possible to read the edited musical sound, and the switching means reads the selection means stored in the third storage means. By switching so as to read the musical sound according to the information, the musical sound before editing can be read. In other words, there is an effect that the undo can be executed by a simple process in which the reading means switches whether to read the musical sound according to the selection information stored in the third or fourth storage means.

  In the recorder according to the fifth aspect, in addition to the effect produced by the recorder according to the fourth aspect, the reading means repeatedly reads the musical sound in accordance with the selection information stored in the third or fourth storage means. There is no need to store it many times, and the storage capacity of the storage means can be further limited to a small capacity.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a panel diagram of the recorder 1 of the present invention. On the panel of the recorder 1, as controls, a volume 6a for setting an input level, a volume 6b for setting an output level, a selector 6c for selecting a phrase number, a left pedal 6d and a right pedal 6e, a light A switch 6f is provided.

  The input volume 6a is used to adjust the level of an electric signal input from a guitar or a microphone, and is adjusted so that the input level becomes an appropriate value with reference to a level indicator (not shown).

  The output volume 6b is for adjusting the level of the signal supplied to the connected amplifier when the phrase stored in the recorder 1 is reproduced.

  The selector 6c is composed of a rotary switch, and is a switch for setting which phrase is reproduced from among a plurality of phrases stored in the recorder or which phrase number is recorded when recording.

  The left pedal 6d and the right pedal 6e are switches that are turned on mainly by depressing them with their feet and turned off by releasing their feet, and are normally located above by a built-in spring and the switches are in an off state. When the pedal is depressed, the switch is turned on.

  The light switch 6f is a push button type switch for instructing to save the edited phrase. By pressing the light switch 6f, the edited phrase is written in a storage track 9c, which will be described later. Even if the power is turned off, the edited phrase is read when the power is turned on next time. be able to.

  The operation panel is provided with LEDs 8a, 8b, and 8c in addition to the above-described operation elements. LEDs 8a, 8b, and 8c represent recording (REC), playback (PLAY), and overdubbing (OVERDUB) modes, respectively.

  That is, when the LED 8a is lit, the recording is being performed, when the LED 8b is lit, the reproduction is being performed, and when the LED 8c is lit, the overdubbing is being performed, and the three LEDs 8a, 8b , 8c is not lit, it indicates that the vehicle is stopped (STOP).

  When the left pedal 6d is operated from the off position to the on position and the phrase number data selected by the selector 6c is empty (not recorded), recording is started and the LED 8a is lit. The

  When the left pedal 6d is operated from the off position to the on position and there is a phrase with the phrase number selected by the selector 6c (recorded), playback of the phrase starts and the LED 8b lights up Is done. When a phrase is being reproduced, overdubbing is started and the LED 8c is turned on.

  Further, when the left pedal 6d is held at the on position for a predetermined time (2 seconds) or longer, an undo process is executed, and the LED 8c blinks during the period in which the undo process is being executed.

  When the right pedal 6e is operated from the off position to the on position, if recording is in progress at that time, recording is stopped, playback is stopped during playback, and overdubbing is performed during overdubbing. Is stopped, and all the three LEDs 8a, 8b, 8c are turned off.

  Further, when the right pedal is held at the ON position for a predetermined time (2 seconds) or more in the stop state, the phrase stored corresponding to the phrase number selected by the selector 6c is erased.

  FIG. 2 is a block diagram showing an outline of an electrical configuration of the recorder 1 and devices connected to the recorder 1. The recorder 1 includes a CPU 5, a ROM 4, a RAM 2, a flash ROM 9, an operator 6, an LED 8, an A / D converter 7, and a D / A converter 10, which are connected by a bus 3. .

  The CPU 5 is an arithmetic unit that is an execution subject of the control program, and the ROM 4 stores various control programs executed by the CPU 5 and fixed value data that is referred to during the execution. The CPU 5 has a built-in timer 5a, and time measurement is started when the left pedal 6d or the right pedal 6e is operated from the off position to the on position. When the amplitude value of the musical sound waveform is written to the memory or read from the memory, the processing is performed at the sampling period, and the CPU 5 is interrupted at the sampling period.

  Among the control programs stored in the ROM 4, processes such as recording, reproduction, and overdubbing will be described later with reference to FIGS. Among these, the flowchart shown in FIG. 8 shows an interrupt process executed by an interrupt generated at a sampling period.

  The RAM 2 is a work area that is used when the CPU 5 executes various processes according to the control program stored in the ROM 4, and an area that stores temporary musical sounds when reading musical sounds from the flash ROM 9 or before storing them in the flash ROM 9, A load 2a, a standby 2b, a play 2c, a save 2d, a select flag 2e, and a current flag 2g are provided.

  The flash ROM 9 is configured to read and write in units of blocks (for example, 512 bytes) instead of units of one word or the like. This reading and writing requires a considerably long time compared to the access time of the RAM 2 or the like. Accordingly, these temporary storage areas are provided in the RAM 2, and before reading from the flash ROM 9, the data is read into the RAM 2 in advance, and when writing into the flash ROM 9, the data is written once into the RAM 2 and then written into the flash ROM 9. .

  The load 2a is an area that first stores data read from the flash ROM 9, the standby 2b is an area that stores data that is read next, and the play 2c is an area that is read and written. The musical sound read from the play area is output in the playback mode, and in the overdubbing mode, the musical sound read from this area and the newly input musical sound are combined and again It is written in this play 2c. In the case of the recording mode, the input musical sound is stored in the play 2c. The save 2d is an area for storing data to be written to the flash ROM 9 next.

  The roles of these areas are sequentially moved every time one block is processed. That is, the area that was initially loaded 2a is then changed to standby 2b, the area that was standby 2b is changed to play 2c, the area that was play 2c is changed to save 2d, and the area that was saved 2d is loaded. Change to 2a.

  The select flag 2e stores selection information indicating in which block the corresponding musical tone is to be read for each block corresponding to track 0 (9a) and track 1 (9b) described later. is there.

  The current flag 2f is written information indicating that the synthesized musical tone (synthetic musical tone) has been written in a predetermined block of track 0 (9a) or track 1 (9b), which will be described later, on track 0 (9a) and track 1 ( 9b) is stored for each corresponding block.

  The flash ROM 9 is a rewritable memory that can retain the memory even when the power is turned off, and includes a track 0 (9a), a track 1 (9b), and a storage track 9c.

  The track 0 (9a) is composed of a plurality of blocks, and the musical sound recorded by each block is divided and recorded. The track 1 (9b) is composed of a plurality of blocks corresponding to the blocks of the track 0 (9a), and the musical sounds recorded by the blocks are divided and stored. The storage track 9c is a track prepared for each of a plurality of phrases that can be selected by the selector 6c. After the editing indicated by the select flag in each block of the track 0 (9a) and the track 1 (9b). The phrase is memorized.

  The A / D converter 7 converts an analog signal into a digital signal, and the sound of an instrument such as a guitar 11 or voice such as a vocal is converted into an analog electric signal by a pickup or a microphone, and the electric signal is converted into a predetermined sampling frequency. The signal is sampled at (for example, 32 KHz) and further quantized into a predetermined number of bits (for example, 16 bits) to be converted into a digital signal. The converted digital signal is temporarily stored in the temporary storage area of the RAM 2 and then stored in the flash ROM 9.

  The D / A converter 10 converts a digital signal into an analog signal. The digital signal stored in the flash ROM 9 is read out by the CPU 5, converted into an analog signal by the D / A converter 10, and output. The The output analog signal is amplified by the amplifier 28, converted into a musical sound by the speaker 27, and emitted.

  FIG. 3 is a diagram schematically showing the relationship between the usage of the memory and the flag when the recorder 1 records, overdubs and reproduces a phrase. When creating one phrase, two tracks, track 0 and track 1, are used, and the storage capacity of each block constituting each track is, for example, 512 bytes.

  First, (a) shows a case where phrases are stored in blocks 0 to 7 of track 0 from a state in which no phrases are stored in track 0 and track 1. As shown in the figure, blocks 0 to 7 of track 0 are painted black, indicating that the musical sound is stored. On the other hand, blocks 0 to 7 of track 1 are blank and indicate that no musical sound is stored.

  The select flag and the current flag have a 1-bit flag corresponding to each block. When recording is performed, all the select flags and all the current flags are set to 0.

  Next, a state when overdubbing is performed in the section from block 2 to block 4 is shown in FIG. In this case, in the section from block 2 to block 4, since it was stored in track 0 at the time of recording, the musical tone (synthesized musical tone) stored in track 0 is read out and synthesized with the newly input musical tone, The synthesized musical sounds are written in blocks 2 to 4 of track 1, respectively.

  At this time, the flag corresponding to each block of the select flag is a code representing the track on which writing has been performed. Here, 0 is written when writing to track 0, and 1 is written when writing to track 1. Accordingly, in the select flag shown in (b), the flags of blocks 0 and 1 and blocks 5 to 7 remain set to 0, and the flags of blocks 2 to 4 are set to 1.

  The current flag is a flag indicating the block that has been written this time, the flag of the block that has not been written is set to 0, and the flag that indicates the block that has been written is set to 1. Therefore, in the current flag shown in FIG. 5B, the flags of blocks 0 and 1 and blocks 5 to 7 remain 0, and the flags of blocks 2 to 4 are set to 1.

  Next, (c) shows a case where overdubbing is performed in the section between blocks 1 and 2 from the state of (b). In this case, for block 1, since the previous musical sound was stored in track 0, it is stored in track 1 this time. Since block 2 was previously stored in track 1, it is stored in track 1 this time.

  As for the select flag, 0 and 1 are inverted only in the newly written block among the select flags in (b). Therefore, 0 is set to 1 for block 1 and 1 is set to 0 for block 2.

  As for the current flag, first, the flags corresponding to all the blocks are set to 0 from the state of (b), and only the flag corresponding to the newly written block is set to 1.

  In this recorder, until a stop operation is performed, a repeated phrase is read out, and a new musical tone can be synthesized and stored in the musical tone constituting the read-out phrase.

  Taking the case of (c) as an example, when reading is performed from block 0 to block 7, the reading is started again from block 0. Reading is always performed from the block of track 0 or track 1 indicated by the select flag. In this case, when writing, in a block in which the current flag is set to 0, writing is performed on a track different from the track indicated by the select flag, the select flag of the block is inverted, and the current flag of the block is Is set to 1. However, if the current flag is already set to 1, writing is performed on the same block of the track indicated by the select flag.

  Next, the undo process will be described with reference to (d). When the memory is stored as shown in (c) and a track is selected and read sequentially according to the select flag shown in (c) for each block, the phrase that has been overdubbed this time can be read.

  However, if the performance during the overdubbing is not successful, it is necessary to return to the state before the current overdubbing and overdub again. In that case, the undo is executed by keeping the left pedal on for a predetermined time or more as described above.

  In this process, as shown in (d), the select flag corresponding to the block whose current flag is 0 is left as it is, and the select flag whose current flag is 1 is inverted. In the case of (d), since the current flag of blocks 0, 1 and blocks 5 to 7 is 0, the corresponding select flag is left as it is, and the flags of blocks 2 and 3 whose current flag is 1 are inverted. To do. The state processed in this way is (d), and this state coincides with the state (b) before the state (c) where overdubbing was performed.

  As described above, the writing to the memory in the case of overdubbing, the flag storing procedure, and the undo process have been described. Next, these processes will be described with reference to the flowcharts shown in FIGS. These processes are executed by the CPU 5.

  FIG. 4 is a so-called main process, which is started when the power of the recorder is turned on and repeatedly executed until the power is turned off. First, as an initial setting, all of the select flag and the current flag are set to 0, and a variable i indicating a block address is set to “0” (S1). Next, it is determined whether the left pedal 6d is turned on (S4). When the left pedal 6d is turned on (S2: Yes), the left pedal on process described later is executed (S3), and when the left pedal 6d is not on (S2: No) or after the left pedal on process, the right It is determined whether the pedal 6e has been turned on (S4). When the right pedal 6e is turned on (S4: Yes), stop processing is performed (S5). In the stop process, when any of recording, reproduction, and overdubbing is being performed, these processes are stopped and set to the stop state.

  When the right pedal 6e is not on (S4: No) or after the stop process, it is determined whether the left pedal 6d is kept on for 2 seconds or more (S6). When the left pedal 6d and the right pedal 6e are operated from off to on, the timer 5a built in the CPU 5 is started and the time kept on is counted. When the left pedal 6d is turned on for 2 seconds or longer (S6: Yes), a left pedal hold process described later is executed (S7), and when the left pedal 6d is not turned on for 2 seconds or longer (S6: No) or left pedal hold process is performed. Next, it is determined whether or not the right pedal 6e is kept on for 2 seconds or more (S8).

  When the right pedal 6e is turned on for 2 seconds or more (S8: Yes), it is determined whether or not it is currently stopped (S9). If it is stopped (S9: Yes), the phrase number selected by the selector 6c is selected. The phrase is deleted (S10). If the right pedal 6e has not been turned on for more than 2 seconds (S8: No), if it is not currently stopped (S9: No), or if the phrase has been erased, then the input / output data processing described later is performed ( S11).

  When the input / output data processing (S11) is completed, it is determined whether the light switch 6f has been turned on (S12). When the light switch 6f is turned on (S12: Yes), each block of track 0 or track 1 stored in the flash ROM 9 according to the selection information stored in the select flag stored in the RAM 2 Is stored in the storage track 9c and stored as an edited phrase (S13). When this storage process is completed, or when it is determined that the light switch 6f is not turned on in the determination process of S12, the process returns to S2.

  FIG. 5 is a flowchart showing details of the left pedal-on process in S3 of the flowchart shown in FIG. First, it is determined whether the recorder is currently in a stop mode (STOP) (S20). If it is the stop mode (S20: Yes), it is next determined whether the phrase of the phrase number selected by the selector 6c is stored (S21). When a phrase is stored (S21: Yes), reading of the stored phrase is started (S22: playback mode), and when a phrase is not stored, storage of input musical sound is started ( S23: Recording mode) This left pedal on process is terminated.

  If it is not the stop mode in the determination process of S20 (S20: No), it is determined whether the recording mode (REC) is selected (S24). When the recording mode is set (S24: Yes), reading of the phrase recorded in the recording mode is started (S25: reproduction mode), and this process is terminated. In the determination process of S24, if it is not the recording mode (S24: No), it is determined whether it is the playback mode (PLAY) (S26). If it is in the playback mode (S26: Yes), since it is instructed to start overdubbing, all current flags are set to 0 (S27), overdubbing is started (S28), and the left pedal is turned on. End the process.

  If the playback mode is not the playback mode in the determination process of S26 (S26: No), the current mode is overdubbing, the overdubbing is stopped and the playback mode in which only reading is performed is switched (S29), and the left pedal on process is terminated. To do.

  6A is a flowchart showing details of the left pedal hold process of S7 in the flowchart shown in FIG. 4, and FIG. 6B is a flowchart showing an undo process that is a subroutine executed in the process of FIG. is there.

  In the left pedal hold process of (a), first, it is determined whether or not the recorder is in the current playback mode (PLAY) (S30). If the playback mode is selected (S30: Yes), an undo process is performed (S31), and the left pedal hold process is terminated. In this case, the playback mode is still maintained.

  If it is determined in S30 that the playback mode is not set (S30: No), it is determined whether the overdubbing mode is set (S32). If it is the overdubbing mode (S32: Yes), the overdubbing is stopped (S33), the undo process is executed (S34), the playback mode is set (S35), and the left pedal hold process is terminated.

  If it is determined in S32 that the overdubbing mode is not set (S32: No), the left pedal hold process is terminated. Here, canceling overdubbing means stopping the synthesis of the read musical sound and the newly input musical sound, and canceling the storage in the play 2c.

  Next, the undo process shown in FIG. In this process, the current flag is determined to be “1” for each block (S36). If the current flag is “1” (S36: Yes), the select flag of the block corresponding to the current flag is inverted (S36). S37). If the current flag is not “1” after the process of S37 or in the determination process of S36 (S36: No), it is determined whether or not all blocks have been processed (S38), and there are blocks that have not yet been designated for processing. If there is (S38: No), the process returns to S36, and if all the blocks have been processed (S38: Yes), this undo process is terminated. During the undo process, the LED 8c blinks to inform the user that the undo process is being performed.

  FIG. 7 is a flowchart showing details of the process of S11 in the flowchart of the main process shown in FIG. In this process, the music sound temporarily stored in the RAM 2 and the process of reading from the flash ROM 9 to the RAM 2 are performed.

  First, it is determined whether a data block read event is set (S40). This data block read event is set when the reading of one block is completed and the next block is read in the reproduction mode or the overdubbing mode, and will be described later with reference to the flowchart shown in FIG. .

  If this data block read event is set (S40: Yes), the musical sound is read from the blocks sequentially read from the flash ROM 9, and written to the load 2a of the RAM 2 (S41). When reading from the flash ROM 9, reading is performed from the corresponding block of the track specified by the select flag.

  When the process of S41 is completed, or when a data block read event is not set (S40: No), it is determined whether a data block write event is set (S42). This data block write event is an event that is set when writing of one block is completed in the recording mode and the overdubbing mode, and will be described later with reference to the flowchart shown in FIG.

  When this data block write event is set (S42: Yes), it is determined which of track 0 and track 1 is stored. For this purpose, it is first determined whether or not the current flag of the block to be written is “1” (S43). If the select flag is “1” (S43: Yes), it indicates that overdubbing has already been performed, so the musical sound stored in the save 2d is stored in a predetermined block of the track designated by the select flag. (S48).

  In the determination process of S43, if the current flag is not “1” (S43: No), since the overdubbing has not yet been performed for the block, the select flag is inverted, and the track indicated by the inverted select flag is displayed. Is written in a predetermined block.

  To explain according to the flowchart, first, the current flag is set to 1 (S44), it indicates that writing has been performed for the block, and it is determined whether the select flag is "1" (S45). When the select flag is “1” (S45: Yes), the select flag is set to “0” (S46). When the select flag is not “1” (S45: No), the select flag is set to “1”. Set (S47).

  When the select flag is set as described above, the musical sound stored in the save 2d area of the RAM 2 is stored in a predetermined block of the track indicated by the select flag (S48). In the determination process of S42, when the data block write event is not set (S42: No) and when the process of S48 is terminated, the input / output data process is terminated.

  FIG. 8 is a flowchart showing interrupt processing generated at a sampling period in the recording mode, the playback mode, and the overdubbing mode.

  First, it is determined whether or not the current mode is recording (REC) (S60). In the case of recording (S60: Yes), the amplitude value, which is a digital signal converted by the A / D converter 7, is stored in the i-th address of the play 2c in the RAM 2 (S61). i indicates an address in the block.

  If it is determined that the recording mode is not selected in the process of S61 or the determination process of S60 (S60: No), it is next determined whether the current mode is playback (PLAY) (S62). In the case of reproduction (S62: Yes), the amplitude value stored in the i-th address of the play 2c in the RAM 2 is output to the D / A converter 10 (S63).

  When it is determined that the playback mode is not selected in the process of S63 or the determination process of S62 (S62: No), it is next determined whether the current mode is overdubbing (OVERDUB) (S64). In the overdubbing mode (S64: Yes), the amplitude value stored in the i-th address of the play 2c of the RAM 2 is output to the D / A converter 10 and converted by the A / D converter 7. And the synthesized value is written back to the i-th address of the play 2c of the RAM 2 (S65).

  If it is determined in the process of S65 or the determination process of S64 that the overdubbing mode is not set (S64: No), i indicating the address in the block is then advanced by “1” (S66). Next, it is determined whether this address i exceeds the final address of the block (S67). If the address i exceeds the block (S67: Yes), an event is set (S68). Setting this event sets a data block write event if the current mode is recording, sets a data block read event if the current mode is playback, and sets the current mode to In the case of overdubbing, a data block write event and a data block read event are set.

  Next to this event set, the address is set to 0 (S69), and this interrupt process is terminated. In the determination process of S67, this interrupt process is also terminated when the address i does not exceed the block.

  As described above based on the above-described embodiment, according to the recorder 1 of the present invention, the musical sound synthesized from the predetermined block of the track 0 is the track corresponding to the predetermined block of the track 0. The musical sound written in the block 1 and synthesized with the musical sound read from the predetermined block of the track 1 is written in the block of the track 0 corresponding to the predetermined block of the track 1. Therefore, every time editing is performed, only the musical sound before editing and the musical sound after editing are efficiently stored. Therefore, although execution of undo is limited to one time, the storage capacity for storing musical sounds can be limited to a small capacity, and the manufacturing cost of the recorder 1 can be reduced. Moreover, the musical sound before editing can be read out only by returning the changed selection information to the original state again according to the writing information stored in the current flag 2f, and undo can be performed under simple data management. Can be executed.

  Next, the recorder 100 of the second embodiment will be described. In the above-described recorder 1 according to the first embodiment, the case where the data stored in the two tracks is managed using the two types of flags, the select flag 2e and the current flag 2f, has been described. In the recorder 100, a case where two types of flags, the first select flag 2g and the second select flag 2h, are used will be described.

  Note that the recorder 100 of the second embodiment will be described with respect to differences from the recorder 1 of the first embodiment, and description of points that are common to the recorder 1 of the first embodiment will be omitted.

  FIG. 9 is a block diagram illustrating an electrical configuration of the recorder 100 and an outline of devices connected to the recorder 100.

  The recorder 100 includes a first select flag 2g and a second select flag 2h instead of the select flag 2e and the current flag 2f provided in the RAM 2 of the recorder 1, and further includes a read pointer 2i.

  The first select flag 2g and the second select flag 2h store, for each corresponding block of the track 0 and the track 1, selection information indicating which of the corresponding blocks is to be read out. It is. The read pointer 2i indicates which musical tone is to be read according to which selection information stored in the first select flag 2g or the second select flag 2h.

  FIG. 10 is a diagram schematically showing the relationship between the usage of the memory and the flag when the recorder 100 of the second embodiment records, overdubs, and undoes a phrase.

  (A) shows a case where phrases are stored in blocks 0 to 7 of track 0 from a state in which no phrases are stored in track 0 and track 1. In this case, it is assumed that the first select flag and the second select flag are set to “0”, and the read pointer 2i points to the first select flag.

  Next, (b) shows a case where overdubbing is performed in the section from block 2 to block 4 from the state shown in (a). If there is an overdubbing instruction during this period, the entire state of the first select flag indicated by the read pointer 2i is copied to the second select flag, and the read pointer 2i is moved from the first select flag to the second select flag. To do.

  In addition, the musical sound read from track 0 (synthesized musical sound) and the newly input musical sound are synthesized according to the selection information corresponding to blocks 2 to 4 of the first select flag, and the synthesized musical sound (synthetic musical tone) is synthesized. Write to blocks 2 to 4 of track 1, respectively. That is, the synthesized sound is written in the other track block corresponding to the read one track block.

  When the synthesized tone is written, the selection information corresponding to the blocks 2 to 4 of the second select flag in which the state of the first select flag is copied is inverted from “0” to “1”. On the other hand, the selection information of the first select flag is maintained in the state shown in (a). After all, the first select flags are all set to “0”, the selection information corresponding to blocks 2 to 4 of the second select flag is set to “1”, and the selection information corresponding to blocks 0, 1, 5 to 7 is set to “0”. Is done.

  Next, (c) shows a case where overdubbing is performed in the section between blocks 1 and 2 from the state shown in (b). If there is an overdubbing instruction during this period, the entire state of the second select flag indicated by the read pointer 2i is copied to the first select flag, and the read pointer 2i is moved from the second select flag to the first select flag. To do.

  In addition, the musical tone (synthesized musical tone) read from the block 1 of the track 0 and the block 2 of the track 1 is synthesized with the newly inputted musical tone according to the selection information corresponding to the blocks 1 and 2 of the second select flag. To do. A musical tone (synthetic musical tone) obtained by synthesizing a musical tone (synthesized musical tone) read from block 1 of track 0 and a newly input musical tone is written to block 1 of track 1 and read from block 2 of track 1. The musical tone (synthetic musical tone) obtained by synthesizing the existing musical tone (the synthesized musical tone) and the newly input musical tone is written in block 1 of track 0.

  When the synthesized musical tone is written, the selection information corresponding to block 1 of the first select flag in which the state of the second select flag is copied is inverted from “0” to “1”, and the selection information corresponding to block 2 is changed. Invert from “1” to “0”. On the other hand, the selection information of the second select flag is maintained in the state shown in (b).

  Eventually, the selection information corresponding to blocks 0, 2, 5 to 7 of the first select flag is set to “0”, the selection information corresponding to blocks 1, 3, 4 is set to “1”, and the block of the second select flag The selection information corresponding to 2 to 4 is set to “1”, and the selection information corresponding to blocks 0, 1, 5 to 7 is set to “0”.

  In this recorder, until a stop operation is performed, a repeated phrase is read out, and a new musical tone can be synthesized and stored in the musical tone constituting the read-out phrase.

  Taking the case of (c) as an example, when reading is performed from block 0 to block 7, the reading is started again from block 0. Reading is performed from the block of track 0 or track 1 indicated by the first select flag currently indicated by the read pointer 2i. In this case, when writing, in a block in which the first select flag and the second select flag match, writing is performed on a track different from the track indicated by the first select flag, and the first select of the block is performed. Invert the flag. However, if the second select flag has already been inverted and does not match the second select flag, writing is performed on the same block of the track indicated by the first select flag.

  Next, the undo process will be described with reference to (d). When the memory is stored as shown in (c) and a track is selected and read sequentially according to the first select flag indicated by the read pointer 2i in (c) for each block, the currently overdubbed phrase is read out. Can do.

  However, if the performance during the overdubbing is not successful, it is necessary to return to the state before the current overdubbing and overdub again. In that case, the undo is executed by keeping the left pedal 6e on for a predetermined time or more as described above.

  In this undo process, the read pointer 2i is moved from the first select flag to the second select flag. As a result, the next time the musical sound is read according to the selection information stored in the second select flag. Note that the state indicated by the second select flag matches the state indicated by the second select flag shown in FIG.

  FIG. 11 is a flowchart showing details of the left pedal-on process in S3 of the flowchart shown in FIG. The recorder 100 of the second embodiment is different from the recorder 1 of the first embodiment in the processing after the playback mode (S26: Yes).

  In the recorder 100 of the second embodiment, when the playback mode is set (S26: Yes), the state of one select flag indicated by the read pointer 2i is copied to the other select flag (S70), and the read point is set to one of the select flags. It moves from the select flag to the other select flag (S71). Thereafter, as in the recorder 1 of the first embodiment, overdubbing is started (S28), and the left pedal on process is terminated.

  Although not shown, in the undo process shown in FIG. 6B, the recorder 1 of the first embodiment performs the process of S38 through the process (S36, S37) of inverting the select flag corresponding to the current flag. In contrast to the process, the recorder 100 of the second embodiment moves the read pointer 2i from one select flag to the other select flag in accordance with an undo instruction, and then executes the process of S38. As described above, when the two select flags 9e and 9f are used, it is only necessary to move the read pointer 2i, so that undo can be executed under simple data management.

  FIG. 12 is a flowchart showing details of the process of S11 in the flowchart of the main process shown in FIG. The recorder 100 of the second embodiment is different from the recorder 1 of the first embodiment in the processing after the data block write event is set (S42: Yes).

  If the data block write event is set (S42: Yes), the select flag indicated by the read pointer 2i has been inverted (one select flag indicated by the read pointer 2i does not match the corresponding other select flag). ) Is determined (S73).

  As a result, if it has been inverted (S73: Yes), it indicates that overdubbing has already been performed, so that it is stored in the save 2d in a predetermined block of the track designated by the select flag indicated by the read pointer 2i. The musical sound that is present is memorized (S48).

  On the other hand, if not inverted (S73: No), it is determined whether or not the select flag indicated by the read pointer is “1” (S74). If the result is "1" (S74: Yes), the select flag indicated by the read pointer is set to "0" (S75), and if not "1" (S74: No), the select indicated by the read pointer The flag is set to “1” (S76). That is, in the processes from S74 to S76, the select flag indicated by the read pointer is inverted.

  After setting the select flag in this way, the musical sound stored in the save 2d area of the RAM 2 is stored in a predetermined block of the track indicated by the select flag, as described in the first embodiment ( S48), this input / output data processing is terminated.

  As described above, since the synthesized sound is written by the recorder 100 of the second embodiment in the same manner as the recorder 1 of the first embodiment, the musical sound before editing and the edited sound are edited each time editing is performed. Only the musical sound is memorized. Therefore, although execution of undo is limited to once, the storage capacity for storing musical sounds can be limited to a small capacity, and the recorder 1 can be manufactured at low cost. Further, when undo is executed, it is only necessary to move the read pointer 2i, so that data management for executing undo can be simplified.

  In the first embodiment, the reading means described in claim 1 corresponds to the processing in S22, S25, and S29 in FIG. 5, the processing in S40 and S41 in FIG. 7, and the processing in S63 in FIG. 8 corresponds to the process of S65 in FIG. 8, the writing means corresponds to the process of 48 in FIG. 7, and the changing means includes the processes of S31 and S34 in FIG. 6A and S45 to S47 in FIG. The process up to is applicable. The first inversion means described in claim 2 corresponds to the processes from S45 to S47 in FIG. 7, and the second inversion means corresponds to the processes in S31 and S34 in FIG.

  In the second embodiment, the reading means according to claim 4 corresponds to the processing of S22, S25, and S29 in FIG. 11, the processing of S40 and S41 in FIG. 12, and the processing of S63 in FIG. 8 corresponds to the process of S65 of FIG. 8, the writing means corresponds to the process of 48 of FIG. 12, the changing means corresponds to the processes of S74 to S76 of FIG. 12, and the switching means corresponds to FIG. 11 corresponds to S70 and the processing of S31 and S34 in FIG.

  The present invention has been described above based on the above embodiments, but the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed.

  For example, in the above embodiment, the case where the left pedal 6d is operated in order to instruct the start of undo has been described. However, the means for instructing the start of undo is not limited to the case in which the left pedal 6d is operated. You may comprise so that undo may be started when a new input signal is input.

  In the second embodiment, the case where the reading pointer 2i is switched every time overdubbing or undoing is described. However, the method for controlling the reading pointer 2i is not limited to this, and overdubbing is executed. In this case, the selection information of one select flag indicated by the read pointer 2i is updated without moving the read pointer, the previous state is stored in the selection information of the other select flag, and when there is an undo, the read pointer 2i may be configured to move from one select flag to the other select flag.

It is an operation panel figure of the recorder of this invention. It is a block diagram which shows the electric structure of the apparatus connected to a recorder and a recorder. It is a figure which shows typically the relationship between the usage of a memory and a flag when a recorder records a phrase, overdubbing, and reproduces | regenerates. It is a flowchart which shows a main process. It is a flowchart which shows the detail of a left pedal on process. (A) is a flowchart which shows a left pedal hold process. (B) is a flowchart showing an undo process. It is a flowchart which shows an input / output data process. It is a flowchart which shows the interruption process started with a sampling period. It is a block diagram which shows the electric constitution of the apparatus connected to the recorder of 2nd Example, and the recorder of 2nd Example. It is a figure which shows typically the relationship between the usage of a memory, and a flag when the recorder of 2nd Example records a phrase, overdubs, and reproduces | regenerates. It is a flowchart which shows the detail of the left pedal ON process of 2nd Example. It is a flowchart which shows the input / output data processing of 2nd Example.

Explanation of symbols

1,100 Recorder 2e select flag (third storage means)
2f Current flag (fourth storage means)
2g First select flag (third storage means)
2h Second select flag (fourth storage means)
2i Read pointer (switching means)
6e Left pedal (instruction means)
6d Right pedal 9 Flash ROM (memory means)
9a Track 0 (first storage means)
9b Track 1 (second storage means)

Claims (5)

A first storage means configured by a plurality of blocks, each of which stores and stores a musical sound;
A second storage means configured by a plurality of blocks corresponding to the respective blocks of the first storage means, and dividing and storing the musical sound by each block;
For each corresponding block of the first and second storage means, a third storage means for storing selection information indicating which of the corresponding blocks is to be read out;
Reading means for reading the musical sound according to the selection information stored in the third storage means;
Instruction means for instructing synthesis of a newly input musical sound in a predetermined section of the musical sound read by the reading means;
Generating means for generating a synthesized musical sound by synthesizing the synthesized musical sound and a newly input musical tone, with the musical tone in block units including the section instructed by the instruction means as the synthesized musical sound;
When the synthesized musical sound synthesized by the generating means is read out from the predetermined block of the first storage means, the synthesized musical sound is stored in the second storage means corresponding to the predetermined block of the first storage means. When the synthesized musical sound is read from the predetermined block of the second storage means, the synthesized musical sound is stored in the block of the first storage means corresponding to the predetermined block of the second storage means. Writing means for writing to,
Write information indicating that the writing means has written the synthesized musical sound into a predetermined block of the first or second storage means is stored for each corresponding block of the first and second storage means. 4 storage means;
A recorder comprising: changing means for changing selection information stored in the third storage means in accordance with write information stored in the fourth storage means.   The changing means includes a first inversion means for inverting selection information stored in the third storage means in accordance with write information stored in the fourth storage means, and the first inversion means. 2. A recorder according to claim 1, further comprising: a second inversion unit that inverts the selection information in the inverted state by the second information in accordance with the write information stored in the fourth storage unit. .   The recorder according to claim 1 or 2, wherein the reading means repeatedly reads the musical sound read according to the selection information stored in the third storage means. A first storage means configured by a plurality of blocks, each of which stores and stores a musical sound;
A second storage means configured by a plurality of blocks corresponding to the respective blocks of the first storage means, and dividing and storing the musical sound by each block;
For each corresponding block of the first and second storage means, a third storage means for storing selection information indicating which of the corresponding blocks is to be read out;
For each corresponding block of the first and second storage means, a reading means for reading out the musical sound stored in one of the corresponding blocks;
Instruction means for instructing synthesis of a newly input musical sound in a predetermined section of the musical sound read by the reading means;
Generating means for generating a synthesized musical sound by synthesizing the synthesized musical sound and a newly input musical tone, with the musical tone in block units including the section instructed by the instruction means as the synthesized musical sound;
When the synthesized musical sound synthesized by the generating means is read out from the predetermined block of the first storage means, the synthesized musical sound is stored in the second storage means corresponding to the predetermined block of the first storage means. When the synthesized musical sound is read from the predetermined block of the second storage means, the synthesized musical sound is stored in the block of the first storage means corresponding to the predetermined block of the second storage means. Writing means for writing to,
Changing means for changing the selection information corresponding to the block of the first or second storage means in which the synthesized musical sound is written by the writing means;
Fourth storage means for storing the selection information changed by the change means and the selection information excluding the selection information changed by the change means for each corresponding block of the first and second storage means;
A recorder comprising: switching means for switching the reading means to read out a musical sound according to the selection information stored in the fourth storage means or the selection information stored in the third storage means .   5. The recorder according to claim 4, wherein the reading means repeatedly reads the musical sound read according to the selection information stored in the third or fourth storage means.

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