JP2538281Y2 - Automatic editing device for multi-track recorders - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention relates to a punch-in / multi-track recorder.
The present invention relates to an automatic editing device used for out.

[Conventional technology]

In the field of personal recording, multi-track recorders (open deck or cassette deck)
Is widely used. Multitrack recorders are
A magnetic recording / reproducing apparatus for recording and editing different musical instruments and voices on each of a plurality of tracks on a magnetic tape, and having a function of recording and reproducing on a plurality of tracks simultaneously or individually. It is. One of the techniques when using this multi-track recorder is a function called punch-in / out. This is a technique of re-recording a previously recorded part and replacing only a part with a new recording. In other words, erasing of a part already recorded and new recording are started by punch-in, and stopped by punch-out. When editing or modifying music by punch-in / out, it is generally performed in bar units or note units. In other words, punch-in / out is performed at the position of the bar or note at the scheduled punch-in / out location. As a method for this, the MIDI device and the multi-track recorder are synchronized using the MIDI clock (synchronization signal) of the sequencer or rhythm device as a MIDI device, and preset punch-in / out points are preset. Automatic punch-in / out. MIDI is Musica
l An abbreviation of Instrument Digital Interface, a standard for transmitting music information by digital signals.
The MIDI clock is one of several MIDI messages.

 FIG. 4 is a functional block diagram of the above method.

For input terminal 1, for example, MIDI output from a rhythm device
A clock is supplied. 24 MIDI clocks are sent for each quarter note. The signal converter 2 converts the MIDI clock into a signal recordable on a magnetic tape. An example of that signal is FS, which shows the pulse position at two different frequencies
This is the K signal. Further, in this case, bar data representing the address (sequence number) of a bar (or a note) necessary for designating a punch-in / out point is simultaneously added to a bar head position. Such a conversion synchronization signal is supplied to the recording means 3 which is a multi-track recorder, and is recorded on one of the multi-tracks. Note that a rhythm sound of a rhythm device can be recorded on this track. On each of the other tracks of the multi-track, a musical instrument sound or the like performed in accordance with the rhythm sound generated by the rhythm device is recorded on each track. When such a substituted recorded one part of the performance M ₁ of the playing performance M ₂ and punch is performed as follows. The converted synchronizing signal recorded by the reproducing means 4 is reproduced, and the converted synchronizing signal is inversely converted by the signal reverse converting means 5 to obtain a MIDI clock. The MIDI clock is supplied to the rhythm device to perform a synchronous operation with the multi-track recorder, which is the reproducing means 4. Performance M ₁ at this time are also recorded in the playback state. The new performance M ₂ is to play to the rhythm sound of the rhythm devices that are synchronous operation. The converted synchronization signal reproduced by the reproducing means 4 is also supplied to the comparing means 6. The measure data to be punched in is preset by the presetting means 7,
This measure data is given to the comparison means 6. The comparing means 6 compares the measure data provided by the preset means 7 with the measure data included in the conversion synchronization signal from the reproducing means 4. Of reproductive performance M _1, which has been recorded advances,
When the bar at which the punch-in is to be reached is reached, the two bar data provided to the comparing means 6 match, so that the comparing means 6 outputs a punch-in signal. This punch-in signal is given to the multi-track recorder, and
Since switching to recording tracks M ₁ from the reproduction, wherein from playing M ₂ is recorded in place of the play M _1. Preset means 7
It is preset also measure data to perform the punching-out, the recording and playing M ₂ reaches this measure is stopped, switched to the reproduction of music M ₁ again. As described above, the punch-in / out is automatically performed, and the performance M ₁ -the performance M ₂ -the performance M ₁
Is recorded.

[Problems to be solved by the invention]

As described above, switching between playback and recording is performed by punch-in / out.
There is a problem that noise is recorded. For this reason, a click lag is prevented by providing a time lag of several hundred mSec between the time when the punch-in / out signal is supplied and the time when the recording is actually started. However, if you do this, the punch-in /
Even if an out signal is given, there is a problem that recording is actually delayed by a time lag. In order to solve such a problem, the present invention provides an automatic editing apparatus for a multi-track recorder that can accurately start and stop recording at the beginning of a bar to be punched in / out. Aim.

[Means for solving the problem]

FIG. 1 is a functional block diagram according to the means of the present invention.

Referring to FIG. 1, preset means 11 presets measure data two measures before a measure to be punched in. The comparing means 12 compares bar data included in the conversion synchronization signal reproduced by the multi-track recorder with preset bar data, and generates an output when both bar data match. The time measuring means 13 receives the output and measures the time of one measure two measures before. The calculating means 14 performs the following calculation based on the time t of one measure by the time measuring means 13 and the preset number N of MIDI clocks in one measure. Since the number N of MIDI clocks is determined by the tempo of the music piece to be punched in, it can be set in advance and used for calculation. In the calculation, first, the time per MIDI clock is obtained, and the number n of MIDI clocks corresponding to the time lag T is calculated from this. Furthermore, within one measure
The number of MIDI clocks, which is the difference between the number of MIDI clocks N and the number of MIDI clocks n for the time lag, is calculated and given to the counting means 14. The counting means 15 counts the number of MIDI clocks obtained by inversely converting the conversion synchronization signal from the beginning of the measure immediately before the measure to be punched in, and counts the number of MIDI clocks given by the arithmetic means 14 to generate a punch-in signal. Output.

[Action]

By the above means, the punch-in signal is supplied to the multi-track recorder earlier than the beginning of the bar to be punched in by the time lag T, so that the punch-in can be performed accurately at the beginning of the bar.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.

The automatic editing device 21 of the present invention is connected to a rhythm device 22 which is a MIDI device and a multi-track recorder 23 (hereinafter referred to as a recorder). FIG. 3 shows the details of the automatic editing device 21. A CPU (central processing unit) 25 has a ROM 26 for storing a control program, a RAM 27 for storing preset data and data for calculation, an input key device 28, a preset A display device 29 for displaying data and the like is connected. Connection line
30 is connected to the rhythm device 22 and the recorder 23.

When recording operation M ₁ is rhythm device 22 and recorder
Driving 23 and playing along with the rhythm generated by the rhythm device 22 to record. The rhythm device 22 generates a rhythm sound and outputs a MIDI clock (hereinafter abbreviated as MC).
This MC is input to the input terminal I of the automatic editing device 21. MC
Is set to 24 per quarter note, so if the tempo is 4/4 time, the number of MCs in one measure is 96, if the tempo is 3/4 time, it is 72 and the first clock is each It matches the beginning of the bar. The automatic editing device 21 converts this MC into a signal recordable on a tape. An example is as follows. That is, the FSK signal is such that two or three of the pulses of the frequency F are generated as a synchronization signal for each MC, and the pulse from the subsequent MC to the next MC is a pulse of half the frequency of the frequency F. Furthermore, in the case of the first MC of each bar, the 12 bits after the synchronization signal are subjected to bi-phase modulation corresponding to the address of the bar, and this is used as bar data. The converted synchronizing signal thus converted is supplied to the recorder 23 from the terminal R and recorded on one of the multi-tracks. Recording of the multi-track to another track (performance M ₁ ) is performed through line r of line 24.

The, by operating the key input device 28, the measure data A _n and performs the measure data A _m and punch out performing punch when re-record a portion of the performance M ₁ was recorded as described above to play M ₂ Enter the tempo of performance M. The tempo is 4/4
For example, the time signature is 4, 3/4 time is 3, 4/8 time is 2, and so on. Further, a time lag T from when the recorder 23 receives the punch-in / out control signal until the recording actually starts (or stops) is input. In CPU 25, RAM 2 as preset data to calculate the 2 measures earlier data A _n-2 two measures earlier data _{A m A m-2, A} n
Store it in 7. Also, M within one measure calculated from the tempo
The C number N and the time lag T are stored as calculation data.

Then, to play the performance M _1, which has been recorded by the recorder 23 to the playback state. This reproduced output is emitted from the speaker from the p-line of line 24 through an amplifier (not shown).
At this time, the stored modulation synchronizing signal is also reproduced and input from the terminal P to the automatic editing apparatus 21. The automatic editing device 21 reversely converts the input conversion synchronizing signal into MC and gives it to the rhythm device 22 from the terminal O, so that the rhythm device 22 is operated in synchronization with this MC to generate a rhythm sound. Therefore, since the recorder 23 and the rhythm device 22 are operated synchronously,
Matching the performance of M _1, which is rhythm sound and sound that have been generated.

Performance M ₂ to record newly is played in accordance with the these sounds. The automatic editing apparatus 21 monitors the measure data included in the conversion synchronization signal input from the recorder 23 to the terminal P, and when the reproduction progresses and the measure data becomes the measure data _Am-2 two measures before the measure to be punched in. , Then the next bar data A _m-1
The time t until is measured. That is, the time t required for one measure
Ask for. The time of the MC clock interval is calculated (= t / N) from the time t and the stored number N of MCs in one bar. The time lag T is calculated from this value and the scheduled time lag T.
The number of MCs n (= T · N / t) corresponding to is obtained. The counting means of the CPU 25 counts the MC obtained by inversely converting the conversion synchronization signal from the beginning of the bar one bar before the bar to be punched in,
When the count reaches N−n + 1, the automatic editing apparatus 21 sends a punch-in signal to the recorder 23 from the terminal C.
That is, a punch-in signal is sent earlier by T for the time lag than the beginning of the bar to be punched in. Note that the count number +1 is based on the interval between the last clock of the MC in one measure and the first clock of the next measure. Recorder 23 receives the punch-in signal and records the performance
But it switched to a recording of the play to stop playing M ₂ of M _1, because the fact of playing M ₂ is recording is later of the time lag T from punch-signal, is just recording from the beginning of the bar of the punch-scheduled Will be. Punch-out signal by using the previous calculation result, so it is sent to the only early recorder 23 time lag T from the head of the punch-out measure of schedule, playing M ₂ recording is to be terminated at the beginning of the bar of the punch-out plans Become.

In the above embodiment, the MC is counted from the beginning of one bar of the bar to be punched in / out, and the count is N-n.
A signal was sent when it reached +1. However, since one count is only a few% of the number of MCs in one bar, it is ignored and N-n is ignored.
It may be. In addition, the time measurement of one measure is performed in the measure two measures before, but the measure before that may be used. In addition, although the address of each measure is assigned to measure data to perform control using the measure data, control may be performed by assigning an address to a note and using the note data. In this case, quarter note 1
Assuming that the number is 1, address 2 is assigned to one half note, and address 1 of two eighth notes is assigned.

[Effect of the Invention] As described above, the punch-in / out signal is automatically given to the recorder earlier than the bar to be punched in / out by the time lag, so that the position of the bar or the note at the head of the planned bar is accurate. Punch-in / out.

[Brief description of the drawings]

Fig. 1 is a functional block diagram of an embodiment of the present invention, Fig. 2 is an embodiment of the present invention, Fig. 3 is a basic configuration diagram of the automatic editing device of the present invention, and Fig. 4 is a function of a conventional automatic editing device. It is a block diagram. 11 ... preset means, 12 ... comparison means, 13 ... time measurement means, 14 ... calculation means, 15 ... count means.

Claims (4)

(57) [Scope of request for utility model registration] 1. Preset means for presetting measure data two measures before a measure to be punched in by inputting measure data of a measure to be punched in, and measure data preset by the preset means and a multi-track recorder. Comparison means for generating an output when the bar data contained in the converted synchronization signal thus reproduced coincides with each other, and time measuring means for measuring the time t of one measure two measures earlier in response to the output of the comparison means Calculating means for calculating a MIDI clock number n corresponding to a predetermined time lag T from the time t of one measure obtained by the time measuring means and the preset number of MIDI clocks N in one measure;
Counting means for counting a MIDI clock obtained by inverting the conversion synchronization signal from the beginning of a bar one bar before the bar in which the punch-in is performed, and outputting a punch-in signal when the count reaches approximately N-n. An automatic editing device for multi-track recorders. 2. The measure data preset by the preset means is any measure data three measures before the measure to be punched in, and the time measuring means measures the time of a measure in the measure data. 2. The automatic editing apparatus for a multi-track recorder according to claim 1, wherein: 3. An automatic editing apparatus for a multi-track recorder according to claim 1, wherein note data is used instead of said bar data. 4. A counting means for counting a MIDI clock from the beginning of a measure one measure before a measure to be punched out and outputting a punch-out signal when the count reaches approximately N-n. 2. The automatic editing apparatus for a multi-track recorder according to claim 1, wherein: