JP2006023569A - Recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recorder whose operability is made superior by a simple operator. <P>SOLUTION: When the recorder is in a play back mode (S26:Yes), all current flags are set to 0 (S27) since a start of over-dubbing is instructed, the over-dubbing is started (S28) and a left pedal-on process is completed. When it is not in the play back mode (S26:No) in the judgement process of the S26, the present mode is an over-dubbing mode. In this case, the over-dubbing is stopped and it is switched to the play back mode in which only reading is conducted (S29) and the left pedal-on process is completed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a recorder capable of overdubbing.

  Conventionally, it is possible to perform overdubbing in which a recorder records a predetermined phrase, performs the performance according to the reproduced sound while reproducing the recorded sound, and synthesizes and records the reproduced sound and the new performance. Recorders are known. Such a recorder is provided with a function called undo (UNDO) for returning to the original state when overdubbing is not performed successfully due to a mistake. The function of returning to the overdubbed state after performing undo is called redo (REDO).

In the invention disclosed in Japanese Patent Laid-Open No. 2003-66979 (Patent Document 1), when the playback / record button is operated while the mix button is operated, overdubbing is started, and when the undo button is operated. It is possible to return to the state before overdubbing is performed.
JP 2003-66979 A

  However, in the recorder disclosed in Patent Document 1, the mix button and the playback / record button must be operated to start overdubbing, and the undo button must be operated to perform undo. Therefore, the operation is complicated and the operability is poor. In addition, in order to set these functions, a plurality of switches are required, resulting in a high manufacturing cost.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a recorder having good operability with a simple operator.

  To achieve this object, the recorder according to claim 1 synthesizes the first storage means for sequentially storing the musical sounds, the musical sound read from the first storage means and the newly input musical sound. The second storage means for storing, the third storage means for combining and storing the musical sound read from the second storage means and the newly input musical sound, and either the on position or the off position Switch means operated in sequence, timing means for measuring the time that the switch means is operated from the off position to the on position and held in the on position, and the musical sound stored in the second storage means are sequentially read out When the switch means is operated from the off position to the on position, the musical sound read from the second storage means and the newly input musical sound are synthesized and sent to the third storage means. Start memory and before When the time measuring means counts the predetermined time, the storage in the third storage means is stopped, and reading of the musical sound stored in the first storage means is started instead of the second storage means. And control means for controlling as described above.

  The recorder according to claim 2 is a first storage means for sequentially storing musical sounds, and a second storage means for synthesizing and storing the musical sounds read from the first storage means and newly inputted musical sounds. And third storage means for synthesizing and storing the musical sound read from the second storage means and the newly input musical sound, switch means operated to either the on position or the off position, The switch means is operated from the off position to the on position, and the time measuring means for measuring the time that the switch means is held in the on position; the musical sounds stored in the second storage means are sequentially read out; When the switch means is operated from the off position to the on position in the state of being synthesized and stored in the third storage means, the reading of the musical sound stored in the second storage means is continued. To the third storage means A control means for controlling to start reading out the musical sound stored in the first storage means instead of the second storage means when the storage is stopped and the time measuring means measures a predetermined time; It has.

  The recorder according to claim 3 is the recorder according to claim 1 or 2, wherein the switch means is always held in an off position by an elastic body and is operated in an operation against the urging force of the elastic body. It is located in.

  The recorder according to claim 4 is the recorder according to any one of claims 1 to 3, wherein the third storage means has a storage capacity smaller than a storage capacity of the first storage means. And a transfer means for transferring the musical sound temporarily stored in the third storage means to the first storage means.

According to the recorder of the first aspect, the first storage means stores the musical sound before synthesis, and the second storage means newly inputs the musical sound stored in the first storage means. When a musical sound that is synthesized with the generated musical sound is stored and the musical sound is read and reproduced from the second storage means, the switch means that is turned on or off is turned on. The musical sound read from the second storage means and the newly input musical sound are synthesized and storage in the third storage means is started. Therefore, there is an effect that it is possible to clearly instruct the start timing of storage in the third storage means. It is difficult to take a timing for instructing the start of a musical tone that is synthesized by synthesizing a musical tone being read and a newly input musical tone when the switch is turned on and then turned off. The recorder described in 1 has good operability.

  Further, when the switch is turned on for a predetermined time, the storage in the third storage unit is stopped, and the musical sound is read from the first storage unit instead of the second storage unit. Therefore, it is possible to store a musical tone obtained by synthesizing a musical tone read by one switch and a newly input musical tone, or to read a musical tone stored in the first storage means instead of the second storage means. Either can be set. In addition, it is easy to start recording the synthesized musical tone, and switching of reading from the second storage means to the first storage means is performed a predetermined time after the switch is turned on, so that operability is good. There is an effect. In addition, it is possible to set a case where recording of a musical tone synthesized from a state where reproduction is performed with one switch and a case where switching of reading from the second storage means to the first storage means is performed. Therefore, it is possible to reduce the number of switches and reduce the manufacturing cost of the recorder.

  According to the recorder of the second aspect, similar to the recorder of the first aspect, the first storage means stores the musical sound before being synthesized, and the second storage means stores the first storage. A musical sound in which the musical sound stored in the means and the newly input musical sound are synthesized is stored, the musical sound is read from the second storage means, synthesized with the newly inputted musical sound, and the synthesized musical sound Is stored in the third storage means, and when the switch means operated to be turned on or off is turned on, the storage in the third storage means is stopped, and the second storage means Continue reading. Therefore, there is an effect that it is possible to clearly instruct the timing of stopping the storage in the third storage means.

  Further, when the switch-on time exceeds a predetermined time, the musical sound is read from the first storage means instead of the second storage means. Therefore, when the musical tone read by one switch and the newly inputted musical tone are synthesized and stored and the reading of the musical tone is continued, instead of the second storage means, Since it is possible to set the case where the musical sound stored in the first storage means is read out, the storage in the third storage means is stopped when the switch is turned on, and the first storage means starts the first storage means. Since the switching of reading to the storage means is performed after a predetermined time since the switch was turned on, there is an effect that the operability is good. In addition, it is possible to set a case where recording of a musical tone synthesized from a state where reproduction is performed with one switch and a case where switching of reading from the second storage means to the first storage means is performed. There is an effect that the number of switches can be reduced and the manufacturing cost of the recorder can be reduced.

  According to the recorder of the third aspect, in addition to the effect achieved by the recorder of the first or second aspect, the switch means is always held in the off position by the elastic body and is operated against the urging force of the elastic body. In this case, the switch means can be operated with a foot or the like, and when playing an instrument such as a guitar, it can be operated while playing. is there.

  According to the recorder of claim 4, in addition to the effect achieved by the recorder of claim 1 or 2, the third storage means has a storage capacity smaller than the storage capacity of the first storage means. In addition, since the transfer means for transferring the musical sound temporarily stored in the third storage means to the first storage means is provided, the entire storage capacity possessed by the recorder can be reduced.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a panel diagram of a recorder 1 according to 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 always 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, and can be read when the power is next turned on even if the power is turned off.

  Further, the operation panel is provided with LEDs 8a, 8b, and 8c, which represent recording (REC), playback (PLAY), and overdubbing (OVERDUB) modes, respectively. That is, when the LED 8a is lit, it indicates that recording is in progress, when the LED 8b is lit, it indicates that playback is in progress, and when the LED 8c is lit, it indicates that overdubbing is being performed. When none of these three LEDs is lit, it represents a stop state (STOP).

  When the left pedal 6d is operated from the off position to the on position, if the data of the phrase number selected by the selector 6c is empty (not recorded), recording is started and the LED 8a is turned on. . If there is a phrase with the phrase number selected by the selector (recorded), playback of the phrase is started and the LED 8b is lit. 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. Undo is to return to the state before overdubbing, and overdubbing can be performed many times, but this overdubbing did not perform well. This is a function for returning to the previous recording state and enabling overdubbing again.

  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 to enter a stop state (STOP), and all the three LEDs 8a, 8b, and 8c are turned off.

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

  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. In addition, when the amplitude value of the musical tone waveform is written into the memory or read out 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 programs, 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 and a save 2d, and a select flag 2e which is an area for storing a flag 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 are read in advance in the RAM 2 before reading from the flash ROM 9. When the data is written in the flash ROM 9, the data is once written in the RAM 2 and then written in the flash ROM 9. Yes. 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 this 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 synthesized and again this It is written in the area of play 2c. In the recording mode, the input musical sound is stored in the play 2c area. 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 save 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 has write information indicating that the synthesized musical sound (synthetic musical sound) is written in a predetermined block of track 0 (9a) or track 1 (9b), which will be described later, in track 0 (9a) or track 1 (9b). ) Is stored for each corresponding block.

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

  The track 0 (9a) is composed of a plurality of blocks, and the musical sound recorded by each block is divided and stored. 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 a predetermined sampling frequency. (For example, 32 KHz) is sampled, and further quantized to a predetermined number of bits (for example, 16 bits). Thus, the digital signal converted into a digital signal and converted 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 and converted into an analog signal by the D / A converter 10 to be converted from the recorder 1. Is output. 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 a phrase and further performs overdubbing and reproduction. When creating one phrase, musical sounds converted into digital signals are stored in two tracks, track 0 and track 1, and each track is composed of a plurality of blocks. The storage capacity of each block is, for example, 512 bytes.

  First, (a) shows a case where phrases are stored in blocks 0 to 8 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 stored in track 0 is read out and synthesized with the newly input musical tone. , And 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. That is, 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 of 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 musical sound was previously 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 6d 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. After performing the undo process, the track indicated by the select flag is read, so that the latest overdubbing can be performed in the previous state.

  As described above, the writing to the memory, the storing procedure of the flag, and the undo process in the case of overdubbing have been described. Next, these processes will be described in detail according 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 an address in the block is set to 0 (S1). Next, it is determined whether the left pedal 6d is turned on (S2). 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 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 written 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). If a phrase is stored (S21: Yes), reading of the stored phrase is started (S22: playback mode), and if a phrase is not stored, storage of the 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.

  In the determination process of S26, if the playback mode is not selected (S26: No), the current mode is the overdubbing mode. In this case, the overdubbing is stopped and the playback mode is switched to only reading (S29). End the left pedal on process.

  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. 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 area.

  If it is determined in S32 that the overdubbing mode is not set (S32: No), the left pedal hold process is terminated.

  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 all blocks have been processed (S38). If there is (S38: No), the process returns to S36, and if all blocks have been processed (S38: Yes), the undo process is terminated. During the undo process, the LED 8c blinks to inform the user that the undo process is being performed. When an instruction is given to execute undo again, the state after the selection flag of the block whose current flag is set to “1” is reversed and overdubbing is performed again. Then, the redo process is executed.

  FIG. 7 is a flowchart showing details of the process of S11 in the flowchart of the main process shown in FIG. This process is a process of reading the musical sound temporarily stored in the RAM 2 and reading from the flash ROM 9 to the RAM 2. 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. .

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

  If this data block write event is set (S42: Yes), it is determined which of the tracks 0 and 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 inverted select flag indicates Write to a given block of the track. 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). If the select flag is “1” (S45: Yes), the select flag is set to “0” (S46). If the select flag is not “1” (S45: No), the select flag is set to 1. (S47).

  Note that the pedal 6d is turned on during playback and overdubbing is started. Before storing a new musical sound in the track 0 or the track 1, first, an area of the track 0 or the track 1 to be newly written by overdubbing. 2 seconds, the musical sound stored for 2 seconds is transferred to a save area (not shown) of the RAM 2 and stored. After the evacuation is completed, the overdubbed musical sound stored in the save 2e is stored in the track 0 or the track 1. When the pedal 6d is turned on for 2 seconds or more and an undo is instructed, the musical sound stored in the save area is returned to the original track 0 or track 1. If the pedal 6d is turned off within 2 seconds after the pedal 6d is turned on, the musical sound stored in the track 0 or the track 1 and stored in the save area is deleted.

  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 at the i-th address in the play 2c area of the RAM 2 (S61).

  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 at the i-th address in the play 2c area of 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 at the i-th address in the play 2c area of the RAM 2 is output to the D / A converter 10 and converted by the A / D converter 7. The synthesized value is synthesized, and the synthesized value is written back to the i-th address in the play 2c area 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, and sets a data block read event if the current mode is playback. 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.

  When recording is started and overdubbing is started, fade-in processing for gradually increasing the amplitude value of the input musical tone is performed for the first several msec and stored in the play 2c area of the RAM 2. When stopping reproduction and overdubbing, fade-out processing for gradually reducing the amplitude value read from the play 2c area of the RAM 2 is performed for several msec to stop reading.

  As described above based on the embodiment, according to the recorder of the present invention, the recording, playback, overdubbing, and stop modes can be set by operating the left pedal or the right pedal. In particular, in the playback mode, when a predetermined track is being played, when the left pedal is depressed, the overdubbing mode is started and overdubbing is started, and the overdubbed musical sound is stored in the RAM. If the left pedal is released within a predetermined time, overdubbing continues, but if it is depressed for a predetermined time or longer, overdubbing is stopped, undo is performed, and reading from another track is performed. Is called.

  Also, in overdubbing mode, when overdubbing is being performed while reading a predetermined track, if the left pedal is depressed, playback mode is entered and overdubbing is stopped. . When the left pedal is released within a predetermined time, the reproduction of the predetermined track is continued as it is. However, when the pedal is depressed for a predetermined time or longer, an undo process is performed and reading is performed from another track.

  Accordingly, playback and overdubbing can be switched with a single pedal, and undoing can be performed, so that operability is good and the number of switches is small, so that the cost of the product can be reduced.

  The first storage means in the claims stores a state before overdubbing (a storage area read when an undo is instructed), and the current storage in the track 0 or the track 1 This is a phrase indicated by a select flag processed so as to invert the block in which the flag is set and not invert the block in which the current flag is not set. The second storage means stores the select flag for track 0 or track 1 It is a phrase indicated by.

  The third storage means is a play 2c area and a save 2e area set in the RAM 2. In this embodiment, it is a small storage area for temporary storage, but when the storage area of the memory is large, it may be an area where all phrases can be stored.

  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, track 0 and track 1 are composed of a plurality of blocks, and when overdubbing is instructed, they are newly synthesized into corresponding blocks of a track different from the track being read at that time. However, the new musical sound may be stored in a completely different track (storage area) different from the track 0 and the track 1.

  In the above embodiment, each phrase is stored in the flash ROM. However, a large capacity memory such as a hard disk may be used.

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 schematic diagram which shows the mode of a track | truck and a flag in the case of performing overdubbing and undo. It is a flowchart which shows a main process. It is a flowchart which shows a left pedal ON process. It is a flowchart which shows a left pedal hold process. It is a flowchart which shows input / output data processing (a) and undo processing (b). It is a flowchart which shows the interruption process started with a sampling period.

Explanation of symbols

1 Recorder 2 RAM (third storage means)
5 CPU (control means)
5a Timer (time measuring means)
6 Control 6d Left pedal (switch means)
6e Right pedal 9 Flash ROM
9a Track 0 (first or second storage means)
9b Track 1 (first or second storage means)

Claims (4)

First storage means for sequentially storing musical sounds;
Second storage means for synthesizing and storing the musical sound read from the first storage means and the newly input musical sound;
Third storage means for synthesizing and storing the musical sound read from the second storage means and the newly input musical sound;
Switch means operated to either the on position or the off position;
Time measuring means for measuring the time that the switch means is operated from the off position to the on position and held in the on position;
In the state where the musical sounds stored in the second storage means are sequentially read out, when the switch means is operated from the off position to the on position, the musical sound read from the second storage means is newly input. And synthesizing with the generated musical sound, and storing in the third storage means is started, and when the time measuring means has timed a predetermined time, the storage in the third storage means is stopped, and the second storage means A recorder comprising: control means for controlling to start reading out the musical sound stored in the first storage means instead of the storage means. First storage means for sequentially storing musical sounds;
Second storage means for synthesizing and storing the musical sound read from the first storage means and the newly input musical sound;
Third storage means for synthesizing and storing the musical sound read from the second storage means and the newly input musical sound;
Switch means operated to either the on position or the off position;
Time measuring means for measuring the time that the switch means is operated from the off position to the on position and held in the on position;
In a state where the musical sounds stored in the second storage means are sequentially read out and synthesized with newly inputted musical sounds and stored in the third storage means, the switch means changes from the off position to the on position. When operated, the reading of the musical sound stored in the second storage means is continued and the storage in the third storage means is stopped, and when the time measuring means times a predetermined time, A recorder comprising: control means for controlling to start reading out a musical sound stored in the first storage means instead of the second storage means.   3. The switch device according to claim 1, wherein the switch means is always held in an off position by an elastic body, and is located in an on position when operated against an urging force of the elastic body. Recorder. The third storage means has a storage capacity smaller than the storage capacity of the first storage means, and the musical sound temporarily stored in the third storage means is stored in the first storage means. 4. The recorder according to claim 1, further comprising transfer means for transferring to the recorder.

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