JPH03189984A - Digital mixing recorder - Google Patents

Abstract

PURPOSE:To increase the number of editing input channels at an editing stage by providing a control circuit which constitutes at least two mixing steps for recording and for monitoring a multi-track and constitutes mixing steps for edit-inputting instead of them at the editing stage. CONSTITUTION:A DSP (a Digital Signal Processor) LSI group 16 is provided with devices such as a RAM and an equalizer in addition to plural DSP chips as a programable digital signal processing circuit. A microcomputer 17 reads out a microprogram and data from a ROM 10 based on the operation of a control panel 12, transfers it to the RAM and obtains constitution corresponding to the operation of the panel 12. By using the programable digital signal processing circuit, the mixing steps for edit-inputting 26, 28 and 30 are constituted at the editing stage instead of the mixing step for monitoring which is used only at an outside input recording stage. Thus, the number of the editing input channels is increased.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a digital mixing recorder that combines a digital mixer and a multi-track recorder. The editing stage that processes the playback output is realized using a rational hardware configuration.

[Conventional technology]

A mixing recorder combines a mixer and a recorder to realize various work formats such as multi-track recording, punch-in/out, and mixdown.

Conventional mixing recorders share the recording mixing stage in the external input recording stage such as multi-track recording as the editing input mixing stage in the editing stage such as mixdown, and usually the number of external input channels and the number of editing input channels are The number was the same.

[Problem to be solved by the invention]

When recording inputs that exceed the number of input channels at the external input recording stage, multiple mixing recorders are connected to match the number of input channels, and these are driven synchronously to record. . When mixing down recordings recorded in this way,
It would be convenient if these multiple mixing recorders could be synchronously played back, each channel's playback output from each mixing recorder could be directly input to the main mixing recorder, and all channels could be mixed down simultaneously on this main mixing recorder.

However, conventional mixing recorders are naturally analog mixing recorders, and even digital mixing recorders are simply replacing analog mixing recorders with digital ones, so they all have fixed circuit configurations and are software-based. It lacked flexibility. For this reason, as described above, the number of editing input channels can only be the same as the number of external human input channels, and it is not possible to simultaneously input all channels to the main mixing recorder for mixdown. Therefore, it is necessary to mix down the mix down individually for each mixing recorder and then mix down again in the main mixing recorder, which causes problems such as complicated operations.

In order to solve this problem, it is possible to input all channels simultaneously by increasing the capacity of the recording mixing stage of the main mixing recorder, but this would lead to an increase in hardware and cost. It had some drawbacks.

This invention solves the drawbacks in the conventional techniques, and
It is an object of the present invention to provide a digital mixing recorder that can increase the number of editing input channels in a raw stick editing stage without increasing the hardware.

[Means to solve the problem]

The present invention provides a programmable digital signal processing circuit in a digital mixing recorder that can be configured to switch between an external input recording stage that inputs external human power into tracks and an editing stage that processes the playback output of a recorded rack. and, during the external input recording stage, the digital signal processing circuit is controlled to configure at least two mixing stages for multi-track recording and for monitoring, and during the editing stage, the digital signal processing circuit is configured for editing input instead of these. It is equipped with a control circuit that configures a mixing stage.

[For production]

In a mixing recorder, in addition to the recording or editing mixing stage that mixes recording or editing manual input, a monitor signal (C
Monitor mixing stages for producing a UE monitor (performer monitor), (-R monitor (control room monitor), etc.) are provided independently. However, in an editing stage such as mixdown, the mixdown output produced through the input mixing stage is directly used as the monitor output, so a monitoring mixing stage is not necessary.

Therefore, in this invention, a programmable digital signal processing circuit is used for the editing stage (in other words,
(In a work mode that does not require a mixing stage exclusively for monitoring), a mixing stage for editing input is configured in place of this unused mixing stage for monitoring. As a result, the editing input mixing stage can be reinforced without increasing the hardware configuration, and the number of editing input channels can be greater than the number of input channels of the external input recording stage.

Note that a programmable signal switching means may be provided to switch the connection of the hardware configuration between the external input recording stage and the editing stage. For example, if an external input recording stage is equipped with an independent digital signal processing device for adding effects, etc. for monitoring, the editing stage can be connected to this device for editing to make effective use of the hardware configuration. be able to.

In addition, by displaying the control status (human channel assignment status, etc.) at each stage using the display means, it is possible to avoid confusion in operations caused by changes in the processing contents of the digital signal processing circuit or connection switching of the hardware configuration by the signal switching means. It can be prevented.

〔Example〕

An embodiment of this invention will be described below. FIG. 1 shows a schematic configuration of a mixing recorder to which the present invention is applied. ROM 10 contains microprograms (software) and data (information on the status of the mixer, such as internal effector and equalizer parameters) that realize various working modes of the mixing recorder (multi-track recording, punch-in/out, mixdown, etc.). etc)
I remember. The operation panel] 2 is equipped with a work mode selection switch, a fader operator, a parameter setting key indicator lamp, and the like. In addition, the LCD display 14
is provided.

The DSPLS I group 16 includes a plurality of DSPs (Digital
In addition to the Signal Processor chip, R
It is equipped with devices such as AM and equalizer. The microcomputer 17 reads out the microprogram and data from the R2M 17 based on the operation of the operation panel 12, and reads out the microprogram and data from the RAM in the DSP chip in the DSPLS I group 6.
A configuration corresponding to operations on the operation panel 12 is obtained. Also, switch the connections of the hardware configuration as necessary.

The DSPLS I group 16 receives external inputs and the playback output of each track from the multi-track digital recorder unit 18, performs signal processing according to a set work format, outputs the signals, and sends them to the recorder unit 18. Also creates monitor output and mixdown output.

FIG. 2 shows the configuration of a mixing stage composed of DSPLS I groups 1-6 in various working configurations.

Multi-track recording (parallel multi-recording in which all performances and recordings are performed at once, series multi-recording in which a small number of tracks are recorded repeatedly to finish the whole thing, etc.)
, in the external input recording stage such as bunch-in/out, a manual mixing stage 20 is used as shown in Fig. 2(a).
, (, -R monitor mixing stage 22 and CUE monitor mixing stage 24 are configured.The input mixing stage 20 receives, for example, 8 channels of input signals (signals selected for each channel from external input or the output of the recorder unit 18). is input, subjected to processing such as equalization, channel effect application, channel fade, panpot, etc., and then assigned to the rack and outputted in, for example, 8 channels, and sent to the recorder unit 18.

The C-R monitor mixing stage 22 performs processing such as channel fade and panbocus on the input signal and then mixes the left and right signals.
It is converted into channels and output as a C-R monitor signal.

The CUE monitor mixing stage 24 performs processing such as channel fade and panpot on the input signal, converts the input signal into left and right channels, and outputs the resulting signal as a CUE monitor signal.

At the editing stage such as mixdown, please refer to Figure 2 (
b), the editing input mixing stages 26, 28 .
30 are configured. Each track playback output from the recorder unit 18 of this machine is input to the editing input mixing stage 26. The edit input mixing stage 28 receives track playback outputs from other recorder units. The editing input mixing stage 30 is further input with each track playback output of another recorder unit. These editing manual mixing stages 26, 28, 30. performs signal processing such as equalizing, channel fade, and panpot on the input signal, and then mixes it down to two channels, left and right. In this case, if each editing input mixing stage 26, 28, 30 has 8 channels of input, a total of 24 channels of signals can be simultaneously input and mixed down to 2 channels. Further, the C-R monitor uses the mixdown output as is.

FIG. 3 shows a signal processing configuration consisting of DSPLS 1 group 16 on the external input recording stage. Eight channels of external input are input from the input terminal 32 and input to the input mixing stage 20. In addition, eight channels of playback output from the recorder unit 18 can also be input, and external manual input and recorder unit playback output can be selected for each channel. For example, in parallel multi-recording in which all performances and recordings are performed at once, external input is selected for all channels. In addition, in series multi-recording, in which a small number of tracks are recorded repeatedly to finish the whole thing, the output of recorder unit 8 is selected for channels that have already been recorded, and external manual input is selected for channels that are to be newly recorded. Ru.

In the input mixing stage 20, the input mix section 34 includes an equalizer, a channel effector,
A channel fader, etc. is configured, and signal processing such as equalization, effect addition, level adjustment, etc. is performed on each channel input signal] 1. After the respective channel signals subjected to signal processing are adjusted in localization by a panpot 36, they are assigned to a multichannel bus 39 by a track assigning section 38.

Further, the output of the input mix section 34 is converted into two channels by a bus 40, and an effect applying section 42
is supplied to The effect applying section 42 has internal effectors 1 and 2, and by connecting the switches 44 to the terminal a, it applies two types of internal effects. In addition, the effect applying section 42 is provided with two terminals 46 for send], two terminals 46 for return], and two terminals 48 for return].
By connecting an external effector on the stand and connecting the switch 44 to the contact point, two types of external effects can be applied. The output of the effect applying section 42 (output made into left and right channels) is assigned to the multichannel bus 39 via an equalizer 50, a panpot 52, and a level adjustment circuit 54.

Furthermore, in this embodiment, a sub-input terminal 56 is provided, from which two left and right channel signals are input manually.
Equalizer 58, panpot 60, level adjustment circuit 62
The signal is assigned to the multi-channel bus 39 via the multi-channel bus 39.

The signals assigned to the multi-channel bus 39 are supplied to the recorder unit]8 and recorded.

The recorder unit 1 is installed in the C-R monitor mixing stage 22.
Either one of the eight 8-channel inputs or the 8-channel playback outputs is selected and manually input for each channel depending on the work type. The C-R mix section 64 includes a channel fader, etc., and performs signal processing such as level adjustment on each channel input signal.The panpot 66 adjusts the stereo position of each channel signal that has been subjected to signal processing. After (, -R monitor bus 68
is assigned to and mixed into two left and right channels.

Also, the output of the C-R mix section 64 is the bus 7
2 becomes one channel and effects are added/11j.

74.

The effect applying section 74 has an internal effector 3, and applies one type of internal effect by connecting the switch 76 to the terminal a. In addition, the effect applying section 74 is provided with a terminal 78 for the send 3 and a terminal 80 for the return 3, and one external effector can be connected to the switch 7.
By connecting 6 to the contact point, one type of external effect can be applied. The output of the effect applying section 74 (output made into left and right channels) is outputted via an equalizer 82, a panpot 84, and a level adjustment circuit 86.
- Assigned to the R monitor bus 68.

(The signal assigned to the -R monitor path 8 is led to the C-R monitor terminal 70.

There is a recorder unit in the CUE monitor mixing stage 24]
Either the 8-channel input or the 8-channel playback output of 8 is selected and input for each channel depending on the work type. The CUE mix section 88 is configured with a channel fader, etc., and performs signal processing such as level adjustment for each channel input signal.Each channel signal that has been subjected to these signal processing is panned by a panpot 9o. After being adjusted, the signal is assigned to the CUE monitor bus 92 and mixed into two left and right channels.

A signal to which an effect has been applied by the effect applying unit 42 and a signal to which an effect has been applied by the effect applying unit 74 and whose level has been adjusted by the level adjustment circuit 9 are also CUE.
It is assigned to the monitor bus 92. And C, U E
The signals mixed on the monitor bus 92 are guided to a CUE monitor terminal 94.

With the above configuration, an external input recording stage is realized.

Next, as an editing stage, DSP is used during mixdown.
FIG. 4 shows a signal processing configuration composed of LS 1 group 16. During mixdown, in addition to the multitrack digital recorder unit 18 of this device, two external multitrack digital recorder units 96 and 98 can be connected, allowing a total of 524 channels of signals to be input simultaneously.

In this case, the recorder unit] 8 of this device 18 is connected inside the mixing recorder.

In addition, the recorder unit 96 has an input terminal 32 (FIG. 3) provided for external input on the external input recording stage.
Connected using. Furthermore, the recorder unit 98
is connected using an input terminal 100 provided for the editing stage.

Signals of 24 channels are synchronously recorded on each track of each recorder unit 96, 18.98. When these recorder units 96, 1.8.98 are played back synchronously,
Each playback output is input to an editing mixing stage 26, 28, 30. In the editing mixing stage 26, the input mix session 102 includes an equalizer, a channel effector, a channel fader, etc., and performs signal processing such as equalizing, adding effects, and level adjustment for each channel input signal. The panpot 104 adjusts the localization of each channel signal that has been subjected to signal processing. This 6 editing mixing stage 26 can, for example, use the processing components of the input mixing stage 20 in the external manual recording stage.

In the editing mixing stage 28, the input mix section 106 includes an equalizer, a channel fader, etc., and performs processing such as equalization and level adjustment for each channel's manual signal. The panpot 108 adjusts the localization of each channel signal that has been subjected to signal processing. This editing mixing stage 28 can use, for example, the processing components of the C-R monitor mixing stage 22 in the external input recording stage.

In the editing mixing stage 30, an input mix section 110 includes an equalizer, a channel fader, etc., and performs processing such as equalization and level adjustment on each channel input signal. The panpot 112 adjusts the localization of each channel signal that has been subjected to signal processing. This editing mixing stage 30 can use, for example, the processing components of the CUE monitoring mixing stage 24 in the external input recording stage.

The outputs of the editing input mixing stages 26, 28, and 30 are assigned to stereo buses 1] and 4, and mixed into two channels.

The outputs of the input mix sections 102, 106, 110 of each editing mixing stage 26, 28, 30 are converted into three channels by bus 1] 76,
18. The effect applying section 118 includes internal effectors 1, 2 . ．． 3, and by connecting the switch 120 to the terminal a, three types of internal effects can be applied.

In addition, the effect applying section 118 is provided with three terminals 122 for sends 1 to 3 and three terminals 124 for returns 1 to 3, to which three external effectors are connected and the switches 118 are individually connected to the contacts. By doing so, three types of external effects can be applied. The output of [effect adding section] 18 (left and right two-channel output) is
It is assigned to the stereo bus 114 via the equalizer 78 125, panpot 126, and level adjustment circuit 128.

The two-channel signal input from the sub input terminal 56 is assigned to the stereo bus 114 via an equalizer 129, a panpot 130, and a level adjustment circuit 132.

The mixdown output obtained from the stereo bus 114 is supplied to the digital output terminal 134 and mixed down to another stereo tape deck. Further, this mixdown output is also led to the C-R monitor terminal 70.

The editing stage is realized with the above configuration.

Next, the DSPLSI group 16 (
The hardware configuration examples shown in FIG. 1) will be explained respectively.

FIG. 5 shows an example of the hardware configuration of the external input recording stage. When an external input recording stage command is given, the DSP 1.36
.

The microprograms 138 and 140 are changed, and device connections are switched as necessary to realize an external input recording stage.

The external human power input from the input terminal 32 and the playback output of the recorder unit and the sub input input from the sub input terminal 56 are respectively input to the DSP 136 138.1.4.
0 and are interconnected via RAM 42 and bus 144 for signal processing. Out of the external input and the playback output of the recorder unit 18, the signals selected for each channel according to the various working formats of the external input recording stage are subjected to equalization processing by equalizers EQI to 4 (input mix session 34 in FIG. 3). equalizing processing).

The DSP 138 processes the internal effectors 1 and 2 or the external effectors connected to the send terminal 46 and the return terminal 48, and the like. Equalizer EQ5 (shared by effectors 1.2, but functions independent of each other) performs equalizing processing (processing by equalizer 50 in FIG. 3) for the FX0 effect signal.

The DSP 140 processes the monitor signal internal effector 3, the external effector 3 connected to the send terminal 78 and the return terminal 80, and processes sub-human input signals input to the sub-input terminal 56.

Equalizer EQ6 (shared by effect 3 and sub-input, but functions independent of each other) performs equalizing processing (processing by equalizer 82.58 in FIG. 3) for the effect signal and sub-input signal.

The mixing output is output from the DSP 1.40 and recorded on the recorder unit 18. Further, the CR monitor and CUE monitor are output from each monitor output terminal 7094.

FIG. 6 shows an example of the hardware configuration of the editing stage. The same reference numerals are used for parts common to those in FIG. When a command for the editing stage is given, the command from the microcomputer 17 (Fig. 1) causes the DSP 136 to
．． 138,140 microprograms were changed,
Then, the connection of devices is switched as necessary to realize an editing stage.

The playback output of the recorder unit 18 of this machine is equalized by the equalizer E.
After being equalized in Q3 and Q4, the DSP1.
38. The playback output of the recorder unit 96 of the other device is input from the input terminal 32 and output to the DSP i 3.
6 is input. The playback output of the recorder unit 98 of another device is input from the input terminal]00, and the equalizer EQ5,
6, the signal is equalized and input to the DSP 140. The sub-input is input to the DSP 140 from the sub-input terminal 56.

DSPs 136, 138, and 140 are interconnected via RAM ]-42 and bus ]44 to perform editing stage processing. Internal effector 12 in DSP138
processing or processing of the external effectors 1 and 2 connected to the send terminal 46 and the return terminal 48, etc. are performed. Equalizer processing for effector 1°2 is done by DSP13.
This is done internally.

2 ] 2 The DSP 140 processes the internal effector 3 or the external effector 3 connected to the send terminal 80 and the return terminal 78.

Equalizer processing for sub input and effector 3 is done by DS
This is done inside the P140.

As described above, an external manual recording stage with 8 channels input and 8 channels output, and a 24 channel manual recording stage 2 are installed.
The channel output editing stage can be realized by changing the microprogram and switching the node/ware connections as necessary.

By the way, with the above configuration, since the internal processing is changed for the externally unchanged operation section, there is a possibility that confusion may occur in the operational aspect. Therefore, as shown in Fig. 1, an LCD display 14 is provided to display the name of the signal (channel name or track name) assigned to the fader at each stage, as well as parameter setting information for each mix section at each stage. It is designed to be displayed selectively by operating a switch.

3 For example, Figure 7 shows the assignment status and fader level setting status of each fader in the external input recording stage, and the channel number (or track number) is displayed at the bottom.
1 to 8, the fader level bar graph is displayed in the middle row, and the channel name is displayed in the upper row.

Figure 8 shows the assignment status of each fader and the setting status of the fader level in the editing stage, (a)
Channels 1 to 8, (b) Channels 9 to 16, (c)
The display is switched into three groups of channels 17 to 24. Each display shows the channel number in the lower row, the fader level in the middle row, and the channel name in the upper row as a bar graph.

Note that the fader controls are shared by these three groups.
The fader is assigned to each fader operator of the group selected by switch operation so that adjustment is possible, and the selected group is displayed.

In addition, the LCD display 14 displays equalizer parameter settings, effect parameter settings, and the like for each channel in accordance with the selection operation of the display selection switch. Also, on the external manual recording stage, the track assignment status of each manual channel is displayed.

The operator can perform adjustment operations at each stage without looking at these displays.

〔Effect of the invention〕

As explained above, according to the present invention, in a digital mixing recorder that can be configured to switch between an external manual recording stage and an editing stage, the editing stage is replaced with a monitoring mixing stage used only in the external input recording stage. Since the mixing stage for editing input is configured, the mixing stage for editing input can be strengthened without increasing the hardware configuration, and the number of editing input channels is larger than the number of manual channels of the external input recording stage. be able to.

In addition, by providing a programmable signal switching means as necessary to switch the connection of the hardware configuration between the external input recording stage and the editing stage, it is possible to effectively utilize the hardware configuration.

Furthermore, by displaying the control status at each stage on the display means, it is possible to prevent confusion in operation due to changes in the processing contents of the digital signal processing circuit, connection switching of the hardware configuration by the signal switching means, and the like.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a mixing recorder to which the present invention is applied. Figure 2 shows the DSPLS of Figure 1 in various work configurations.
[Group I] 6 is a block diagram showing a mixing stage constituted by 6, in which (a) is an external manual recording stage, and (b) is an editing stage. Figure 3 shows the DSPLS of Figure 1 in the external input editing stage.
FIG. 2 is a block diagram showing details of a signal processing configuration composed of a first group 16; Figure 4 shows the DSPLSI group 16 of Figure 1 on the editing stage.
FIG. 2 is a block diagram showing details of a signal processing configuration configured by the following. 5 6 Figure 5 shows the DS of Figure 1 at the external input recording stage.
2 is a block diagram showing the hardware configuration within PLS 1 group 16. FIG. Figure 6 shows the DSPLS of Figure 1 at the editing stage.
2 is a block diagram showing the hardware configuration within the first group 16. FIG. FIG. 7 is a diagram showing a display example of fader assignment status and fader level setting status on an external manual recording stage. FIG. 8 is a diagram showing an example of display of fader assignment status and fader level setting status in the editing stage. 14...LCD display (display means) 16...D
SPLS 1 group (programmable signal processing circuit), 1
．． 8... Multi-track digital recorder unit, 20... Input mixing stage, 22... CR monitor mixing stage, 24... CPE monitor mixing stage,
26, 28. 30... Edit input mixing stage, 17.
...Microcomputer (control circuit). 7

Claims (2)

[Claims] (1) A digital mixing recorder that can be configured to switch between an external input recording stage for recording external inputs onto tracks and an editing stage for processing the playback output of recorded tracks, comprising a programmable digital signal processing circuit; At the external input recording stage, the digital signal processing circuit is controlled to configure at least two mixing stages for multi-track recording and for monitoring, and at the editing stage, a mixing stage for editing input is provided instead. A digital mixing recorder comprising a control circuit for configuring. (2) The digital mixing recorder according to claim 1, further comprising display means for displaying the control state by the control circuit in each of the stages.