JPH05242599A - Signal processor - Google Patents

Abstract

PURPOSE:To unnecessitate complex dubbing work and to shorten an editing work time. CONSTITUTION:The signals of respective channels from a multi-channel recorder 10 are inputted through input terminals 11a-11n and the signal having information on timing supplied from the outside is supplied to an internal timing setting part 15a through the input terminals 11R1-11R4. A control signal from a control part 16 is supplied to memory parts 14a-14n at timing supplied from the internal timing setting part 15a and the stored signal is read. The read signal is supplied to a level adjustment mixing part 17 and outputted to a master recorder 12 and recorded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal processing apparatus suitable for use in post-production or the like in which a plurality of material signals are subjected to processing such as time shift and completed as a program.

[0002]

2. Description of the Related Art In the production of a program, the material of the program produced in a studio or a location is processed together with other materials, and finally a production centered on editing called post production is performed to produce one completed program. There is. This post-production is performed using a recording / playback machine, an editing machine, a switcher, an audio mixer, a special effect device, or the like.

In this post-production operation, an operation of displacing a target material to be recorded with time is often performed. As an example of the time shift operation, signals of music materials recorded in a multi-channel recorder may be mixed down via a signal processing device such as an audio mixer. In the case of this mixdown, the time shift is an operation of shifting a specific take (recording) of a specific channel back and forth in time when mixing each channel.

Further, as a recording medium to be used, a magnetic tape, a film or a disc, particularly a magneto-optical disc or the like is used. A tape recorder using the above magnetic tape is excellent in operability. A disc device using the disc, which is another recording medium, is characterized in that the time shift operation can be easily performed.

At present, a magnetic tape is generally used as a main recording medium used by a user in consideration of the above-mentioned characteristics because of its recording capacity, operability and ease of processing.

[0006]

By the way, it has been already described that the above-mentioned time shift is an operation necessary for performing post-production work.

However, the tape recorders currently used for post production are excellent in operability, but the time shift processing is very difficult.

In practice, when a take of a certain channel is time-shifted by using another tape recorder or multi-channel recorder, the time shift is recorded, for example, in a memory built in the multi-channel recorder and then taken from the memory again. Is timed to a specific track of a multi-channel recorder or the like, and is dubbed and then mixed down with other music material. Therefore, it takes a very long time to perform the time-shifting of the takes recorded on the magnetic tape and the dubbing.

Although the method of time-shifting using a disc can be easily performed as described above, it is generally difficult to operate the disc device required in post-production.

Therefore, the present invention has been made in view of such a situation, and in an apparatus excellent in operability,
An object of the present invention is to provide a signal processing device that can easily realize a time shift process.

[0011]

A signal processing apparatus according to the present invention includes a plurality of storage means for selectively holding respective signals input via a plurality of input terminals, and a storage means held by these storage means. Timing setting means for setting the timing of reading each of the stored signals, and read control means for controlling the reading of the signals held in the storage means at each timing set by the timing setting means,
The above problem is solved by having an output processing unit that performs signal processing on the signals read from the plurality of storage units and outputs the processed signals.

Here, the timing setting means can set a delay time for time-shifting at least one channel, and can set a delay time corresponding to time information from outside or inside the device. The timing setting means supplies the operation timing to each unit according to these settings. Further, the timing setting means decodes the signal supplied from the setting means provided inside the signal processing device or the outside to set the delay time with respect to the desired signal.

The read control means comprises a system controller and a memory control section to control the storage means.

[0014]

The signal processing apparatus according to the present invention supplies a timing signal corresponding to a set delay time to output the signals held from a plurality of storage means, thereby eliminating time-consuming dubbing work. Perform processing.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic system configuration of a first embodiment of a signal processing apparatus of the present invention.
This major system is a multi-channel recorder 1
0, a signal processing device 11 of the present invention, a master recorder 12 and a time code synchronizer 13.

This signal processing apparatus is a memory section 14a-1 which is a plurality of storage means for selectively holding each signal input through the plurality of input terminals 11a-11n shown in FIG.
4n, an internal timing setting unit 15a that is a timing setting unit that sets the timing of reading each of the signals stored in these storage units, and the above-mentioned timings supplied through the internal timing setting unit 15a. The control unit 1 which is a read control unit that controls the reading of the signals held in the memory units 14a to 14n.
6 and a level adjustment mixing section 17 which is an output processing means for performing signal processing on the signals read from the memory sections 14a to 14n and outputting them.

The internal timing setting section 15a comprises a display key 151 for setting a delay time in the signal processing device 11, and a delay time storage section 152 for storing the set delay time.

The control section 16 is a system control section 16 for controlling the system of the entire signal processing apparatus.
a and each memory unit 14a to
Memory control unit 1 for controlling the timing of 14n
It is composed of 6b.

The memory sections 14a to 14n and the memory control section 16b can be regarded as the delay output circuit 18 for the stored signal.

Further, the connection relationship in this system will be described with reference to FIG. The multi-channel recorder 10 has N channels from CH1 to CHN.
Channel signals are output from the output terminals 10a to 10n, respectively, and the input terminals 11a to 11n of the signal processing device 11 are output.
Through memory units 14a to 14n corresponding to channels
Is being supplied to.

When setting the timing of the delay time inside the signal processing device 11, the user inputs the delay time for each channel using the display key 151. This operation will be described in detail later. The input signal is supplied to the system controller 16a, and numerical data corresponding to the pressed key is returned to a display unit (not shown) to display the numerical data. The system controller 16a supplies the numerical value data to the delay time storage unit 152 and stores it as the set delay time.

The system controller 16a supplies, for example, the memory controller 16b with an address corresponding to each of the memory sections 14a to 14n and a write / read control signal of each channel material signal to be supplied. The memory controller 16b uses the supplied address to identify each memory unit 14a.
Decoding is performed on which of the memory units 14n to 14n is subjected to write / read control. The memory controller 16b controls the writing / reading of the channel material signal by the writing / reading control signal by performing the decoding process to enable the corresponding memory unit.

In particular, the read control from the memory unit is controlled according to the delay time based on the numerical data previously stored in the delay time storage unit 152 by the user. In this way, time adjustment, that is, time shift, is performed for each channel material signal.

The outputs from the memory units 14a to 14n are
It is supplied to the level adjustment mixing unit 17. The level adjusting mixing unit 17 adjusts the level of each channel material signal including the channel material subjected to the time shift processing, and mixes them to generate a sound desired by the user. The generated signal is supplied to the input terminal 12R ₁ of the master recorder 12 for recording the completed signal via the output terminal 11S and recorded.

The signal processing device 11 uses a time code synchronizer 13 for synchronizing the operations of the external multi-channel recorder 10 and the master recorder 12 with each other.
The transport control signal is supplied from the two recorders, and the two recorders are operating in synchronization. The operation of the system controller 16a is also controlled by this external information.

When the timing of the delay time is internally set in this manner, the system controller 16a is controlled so as to shift the time by the delay time set by the internal timing setting section 15a so that each channel material signal is temporally changed. The master recorder 12 can be made to record the completed signal after processing.

Next, another embodiment in which a delay time is externally set to the signal processing device 11 to shift the time will be described with reference to FIG. Here, common parts are given the same reference numerals, and description thereof is omitted.

This signal processing device includes a memory section 14a to store inputs of a plurality of channel material signals shown in FIG.
An external timing setting unit 15b, which is a timing setting unit that sets the timing of reading each of the signals held in 14n, and the memory units 14a to 1 at each timing supplied through the external timing setting unit 15b.
4n, a control unit 16 which is a read control unit for controlling the reading of the signal held in 4n, and the memory unit 14 described above.
The level adjustment mixing unit 18 is an output processing unit that performs signal processing on the signals read from a to 14n and outputs the processed signals.

The external timing setting unit 15b includes a time code information decoding unit 153 and a transport unit which decode the time code information and the transport information supplied from the multi-channel recorder 10 and the master recorder 12 external to the signal processing device 11, respectively. Information decoding unit 154
It consists of.

The time code information of the multi-channel recorder 10 is output from the output terminal 10S ₁ according to the transport control signal supplied from the time code synchronizer 13 via the input terminal 10R.
The signal processing device 1 is supplied to the synchronizer 13.
It is supplied to the time code information decoding unit 153 via the _first input terminal 11R ₁ .

Similarly, according to the transport control signal, the transport information is output at the output terminal 10S ₂
Is supplied to the transport information decoding unit 154 via the input terminal 11R ₂ of the signal processing device 11.

The above time code synchronizer 13
Also supplies a transport control signal to the master recorder 12. The master recorder 12 has an output terminal 12S.
The time code information corresponding to ₃ to the transport control signal through the input terminal 11R ₃ of the signal processing device 11 are supplied to the time code information decoder 153. In addition, the master recorder 12 supplies the transport information corresponding to the transport control signal from the output terminal 12S ₄ to the transport information decoding unit 154 via the input terminal 11R ₄ of the signal processing device 11.

The time code information decoding unit 153 and the transport information decoding unit 154 supply the decoded information to the system controller 16a. In this case, the system controller 16a can automatically stop the operation or start the operation based on the time code information or the transport information indicating the operation state of each external recorder.

From this, the signal processing device 11 is not limited to the timing setting by the display key 151 built in the device, but the material corresponding to each channel supplied from the external time code synchronizer 13 required for the synchronous operation. It can be seen that the transport control signal for each signal can be time-shifted by, for example, an operation of stopping the operation at the start of writing the channel material signal to the memory.

A concrete example of these time shifting operations in the above-described embodiment is shown in FIG. 2 which is a schematic diagram of the relationship of each timing, and will be described with reference to the block diagram of FIG. 1 as necessary. Here, the multi-channel recorder 10 and the master recorder 12 are operating in synchronization with the control of the time code synchronizer 13 shown in FIG.

FIG. 2A shows the time relationship of a plurality of channel material signals output from the multi-channel recorder 10. FIG. 2B shows a time relationship when recording is performed with a delayed time shift of channel 2, which is one of a plurality of channel material signals recorded in the master recorder 12. Further, FIG. 2C shows a time relationship when channel 2 which is one of a plurality of channel material signals recorded in the master recorder 12 is recorded by an earlier time shift.

The time axis t _MTR shown in FIG. 2A shows the relationship of the time code information of the multi-channel recorder 10. The multi-channel recorder 10 supplies the channel material signal of each channel to the section 20 with the operation start point of the multi-channel recorder 10 as S and the operation end point as E, to the signal processing device 11.

The section 21 where the actual take (recording) is performed is
An operation of recording the takes CH1 _{t to} CHN _t of each channel material signal in the section of the take start point T _s and the take end point T _{e in} the master recorder 12 is performed. At this time, the method of time-shifting channel 2 with respect to takes other than channel 2 by the delay output circuit 18 is to delay the take CH2 _{t of} channel 2 by time T ₀ (see FIG. 2B). , CH2 _t of channel 2 can be taken earlier by time T ₁ .

A method of determining the times T ₀ and T ₁ necessary for performing these processes will be described. First, the multi-channel recorder 10 is reproduced to reproduce the multi-channel recorder 10 at the time T _p after the take start point T _s. 10
Stop the operation of. At this time, the system controller 16a shown in FIG.
Transport information from, or master recorder 12
From the transport information decoding unit 154. The received information supplies a write stop command signal to the memory control unit 16b for the memory units 14a to 14n.

Here, assuming that the maximum recording time of the memory sections 14a to 14n is T _m , the memory sections 14a to 14n are
n records the channel material signals of each channel of the section 22 from the time obtained by subtracting the maximum recording time T _m (T _p -T _m) to the time T _p from the time T _p where each operation is stopped.

Next, the display key unit 151 on the operation panel of the signal processing device 11 is operated to reproduce the channel material signals of the respective channels recorded in the memory units 14a to 14n at a low speed or at the same speed as the recording speed. Then, the start point of the take CH2 _t of the channel 2 to be time-shifted is determined. That is, the take start point when the take start is delayed is T _so , and the take start point when the take start is earlier is T _so .
_{Assuming si} , the above-mentioned delay and the times T ₀ and T ₁ required for setting earlier are respectively T ₀ = T _so −T _s (1) T _i = T _s −T _si ... ... can be calculated from (2).

Although the method described here is a method of writing the channel material signal to the memory by using the transport information supplied from the outside, the display key unit 151 is operated as described in the first embodiment. Then, the times T ₀ and T _i can be obtained in the same manner by manually performing the steps.

The above-mentioned method is a method of determining the starting points T _so and T _si of the time shift from the channel material signals recorded in the multi-channel recorder 10.
In this system, for example, a video tape recorder (VT)
Even if another recording device such as R) is operated synchronously, by monitoring this output, the start point T _so of the time shift,
It is also possible to determine T _si and obtain the times T ₀ and T _i .

When the channel material signal of the channel 2 is delayed, the delay time storage section 152 stores the information of the delay time of each channel including the time T ₀ which is the calculated delay time amount for the channel 2 shown in FIG. 2B. To memorize. The system controller 16a supplies the delay time for each channel from the delay time storage unit 152 to the memory control unit 16b according to the time code information of the multi-channel recorder 10 or the master recorder 12.

At this time, from the operation start point S of the multi-channel recorder 10 shown in FIG. 2B to the take start point T _s.
Until the time (T _e + T ₀ ) obtained by adding the delay amount T ₀ of the channel 2 to the take end point T _e from the take start point T _s to the delay amount T ₀ and the subsequent time (T _The delay amount is zero from _e + T ₀ ) to the operation end point E. The delay amount for the channel material signals other than the channel 2 of the multi-channel recorder 10 shown in FIG. 2 (b) is zero from the operation start point S to the operation end point E and only the necessary channel material signal is obtained. Can be delayed.

The output signal from the delay output circuit 18 is supplied to the level adjustment mixing section 17 to adjust the level of each channel material signal and perform mixing processing to time shift only the desired channel material signal to generate a signal. can do.

When the completed signal from the level adjusting mixing section 17 is supplied and recorded via the output terminal 11S, the master recorder 12 is controlled by the multi-channel recorder 11 in accordance with the time axis t _MR1 shown in FIG. 2 (b). When the synchronous operation is performed so as not to have the time code offset, the time axis t of the master recorder 12 shown in FIG.
_The master recorder 12 can record a completion signal that matches the time code information indicated by the _MTR .

When the channel material signal of channel 2 is advanced, the delay time information of each channel including the time T _i which is the calculated delay time amount for channel 2 shown in FIG. To memorize. The system controller 16a supplies the delay time for each channel from the delay time storage unit 152 to the memory control unit 16b according to the time code information of the multi-channel recorder 10 or the master recorder 12.

At this time, from the operation start point S of the multi-channel recorder 10 shown in FIG. 2C to the take start point T _s.
To T _i , and the delay amount of channel 2 from the take start point T _s to the take end point T _e The delay amount is set to zero from the take end point T _e to the operation end point E to T _i . The delay amount for the channel material signals other than the channel 2 of the multi-channel recorder 10 shown in FIG. 2C is delayed by the delay amount T _i from the operation start point S to the operation end point E (see FIG. 2). Section 23 shown in (c)
By operating only the take of the required channel material signal without delay, the time shift of the required channel material signal can be recorded earlier.

The output signal from the delay output circuit 18 is supplied to the level adjusting / mixing section 17 to adjust the level of each channel material signal and perform mixing processing to generate a signal by time-shifting only the desired channel material signal. can do.

When the completed signal from the level adjusting mixing section 17 is supplied and recorded through the output terminal 11S, the master recorder 12 is multi-channel in the relationship of the time axis t _MR2 as shown in FIG. 2 (c). When the recorder 11 is operated synchronously so as not to have a time code offset, a completion signal that matches the time code information indicated by the time axis t _MTR of the master recorder 12 shown in FIG. 2A is recorded in the master recorder 12. be able to.

The multi-channel recorder 11 on the side for supplying the channel material signal is subjected to the time shift based on the set value of the delay time thus obtained, for example, the times T _o and T _i , for the desired channel. In contrast, by performing the synchronous operation so as not to have the time code offset, even the multi-channel recorder 11 using the magnetic tape as the recording medium can easily perform the time shift on the desired channel.

As a result, it is possible to eliminate the need for a complicated dubbing operation such as recording on another device for time-shifting a conventional recorder using a magnetic tape as a recording medium. By simplifying this work, the time for editing work such as mixdown can be shortened, leading to improved efficiency.

[0055]

As is apparent from the above description, according to the signal processing device of the present invention, a plurality of storage means for selectively holding each signal input via a plurality of input terminals, Timing setting means for setting the timing of reading each of the signals held in these storage means, and reading for controlling the reading of the signals held in the storage means at each timing set by the timing setting means By having the control means and the output processing means that performs signal processing on the signals read from the plurality of storage means and outputs the signals, the signals held in the plurality of storage means can be subjected to a complicated dubbing work with a desired delay time. You can skip it and shift the time. As a result, the time required for editing work such as mixdown can be shortened, and the work efficiency such as editing work can be improved.

[Brief description of drawings]

FIG. 1 is a schematic block circuit diagram in a system configuration in which a signal processing device according to the present invention is used in a first embodiment and another embodiment.

FIG. 2 is a schematic diagram illustrating a timing relationship involved in the operation of the above-described embodiment.

[Explanation of symbols]

 10 ... Multi-channel recorder 11 ... Signal processing device 12 ... Master recorder 13 ... Time code synchronizer 14a-14n ... Memory part 15a ..... internal timing setting part 15b ..... external timing setting part 16 ..... control part 16a ..... system control 16b ... Memory control section 17 ... Level adjustment mixing section 18 ... Delay output circuit 151 ... Display key section 152 ... ... Delay time storage unit 153 ... Time code information decoding unit 154 ... Transport information decoding unit

Claims (1)

[Claims] 1. A plurality of storage means for selectively holding each signal input via a plurality of signal input terminals, and a timing for setting a timing of reading each of the signals held in these storage means. Setting means, read control means for controlling the reading of the signal held in the storage means at each timing set by the timing setting means, and performing signal processing on the signals read from the plurality of storage means and outputting the signals. A signal processing device, comprising: