JP3866094B2 - Duplex sound system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an acoustic system that adjusts acoustic effects in music performances, on-site broadcasting, and the like, and more particularly, to a duplex acoustic system that is duplexed and system reliability is improved.
[0002]
[Prior art]
FIG. 5 is a configuration diagram of a conventional dual acoustic system. The duplex acoustic system shown in FIG. 5 converts an audio signal based on an analog signal input from the audio input unit 1 into a digital signal by the data conversion unit 2, and the main processor 3 performs an acoustic process on the converted digital signal, The processed digital signal is inversely converted into an analog signal by the data inverse conversion unit 4 and output from the audio output unit 5. Then, the sound adjustment command input from the sound adjustment console (console) 6 is changed to sound processing command data for the main processor 3 by a personal computer (hereinafter referred to as PC) 7, and the arc net signal lines 8, 9, 10 is transmitted to the data conversion unit 2, the data reverse conversion unit 4, and the main processor 3.
[0003]
This dual acoustic system is provided with a sub processor 12 for the case where the main processor 3 fails and the main processor 3 cannot be adjusted from the acoustic adjustment console 6, and the main processor 3 and the sub processor 12 is provided with a control switching unit 13. The control switching unit 13 includes a common contact 13 a connected to the data reverse conversion unit 4, a switching contact 13 b connected to the main processor 3, and a switching contact 13 c connected to the sub processor 12. Further, the output signal of the data converter 2 is input in parallel to the main processor 3 and the sub processor 12, the output signal of the main processor 3 and the output signal of the sub processor 12 are added, and input to the data inverse converter 4. It has come to be.
[0004]
Next, the operation of the conventional dual sound system will be described. In the dual acoustic system, when the main processor 3 is not out of order, the common contact 13a of the control switching unit 13 is connected to the switching contact 13b and is output from the acoustic adjustment console 6 to the processor via the PC 7. The acoustic processing command data is given to the main processor 3 through the signal line 8, the data conversion unit 2, the signal line 9, the data reverse conversion unit 4, the signal line 10a, the control switching unit 13, and the signal line 10b. The audio signal acoustically processed by the main processor 3 is output from the main processor 3 to the data reverse conversion unit 4 and the audio output unit 5. At this time, since the sub-processor 12 has not received the acoustic processing command data from the PC 7, the input signal input from the data converter 2 to the sub-processor 12 is not output.
[0005]
Here, when the main processor 11 fails, the control switching unit 13 is manually switched. As a result, an adjustment command from the acoustic adjustment console 6 is sent via the PC 7 to the signal line 8, the data conversion unit 2, the signal line 9, the data reverse conversion unit 4, the signal line 10a, the control switching unit 13, and the signal line 10c. And transmitted to the sub-processor 12. The audio signal subjected to acoustic processing from the sub-processor 12 is output to the data reverse conversion unit 4, and the acoustic processing performed by the acoustic adjustment console 6 can be continued.
[0006]
[Problems to be solved by the invention]
In the duplex system described above, when the main processor 11 fails, the sub processor 12 can perform acoustic processing. However, there is a problem that the sound output state changes at the moment when control is switched from the main processor 11 to the sub processor 12.
[0007]
For example, when acoustic processing command data for reducing the volume of the background music and increasing the announcement voice is given to the main processor, and the background music and the announcement voice are output from the voice output unit 5, switching of control occurs. Since this acoustic processing command is not given to the sub-processor 12 in advance, at the moment of control switching, the state becomes unrelated to the setting state of the main processor, which gives a sense of discomfort and discomfort to the audience.
[0008]
Such a problem does not occur if the acoustic processing command data output from the PC 7 is also given to the sub-processor 12 before the control is switched. However, if there is a bug in the sound processing command data generation program running on the PC 7 and the main processor 11 fails due to the sound processing command data, the sub processor 12 also fails at the same time. However, there is a problem that the reliability of the system is not improved even though the processor is duplicated.
[0009]
An object of the present invention is to provide a duplex sound system that can output a continuous sound even when control is switched from a main processor to a sub processor, and can improve the reliability of the system.
[0010]
[Means for Solving the Problems]
A dual acoustic system that achieves the above object includes: a first processor that performs acoustic processing on an input audio signal; a second processor that performs acoustic processing on the audio signal; A first control means for outputting a processing data setting command; and information related to acoustic processing by the first control means connected to the first control means via a communication line, and data setting of acoustic processing in the second processor A second control unit that outputs a command; and a switch unit that selects an output of the first processor or an output of the second processor and outputs an audio signal subjected to acoustic processing.
[0011]
With this configuration, since the same data for acoustic processing is set in the two processors, it is possible to prevent the sound output state from changing even when the processors are switched. Further, since the control means is doubled in addition to the dual processor, the probability that the two processors are down at the same time is reduced, and the reliability of the system is improved.
[0012]
Preferably, the connection between the first processor and the first control means and the connection between the second processor and the second control means are between the first processor and the second control means. And switching means for switching to the connection between the second processor and the first control means.
[0013]
With this configuration, the processor to which the first control means outputs the data setting command can always be the main processor, and the second control means can always set the data of the sub processor.
[0014]
More preferably, a manual switch for outputting a switching command to the switching means is provided. With this configuration, the processor can be switched based on the operator's judgment.
[0015]
More preferably, the first processor includes means for outputting a switching command to the switching means when the power is turned off. With this configuration, it is possible to avoid a state in which the first processor does not work and audio output stops.
[0016]
More preferably, the switching means includes means for notifying connection switching to the first control means when connection switching occurs. As a result, the first control means can easily know which processor is the processor that it controls.
[0017]
More preferably, when performing connection switching by the switching means, the second control means acquires and outputs the latest data setting command output by the first control means via the communication line, and A means for switching the connection after making the data setting of the first processor the same as the data setting of the second processor is provided. With this configuration, it is possible to make the main system and sub system data substantially the same with respect to the audio output state when the processor that outputs audio is switched, and to prevent discomfort and discomfort to the audience.
[0018]
More preferably, the first control means is provided with a monitor for displaying whether the destination to which the data setting command is output is the first processor or the second processor. With this configuration, the operator can easily know which processor is the main processor.
[0019]
More preferably, the first control means has a function of controlling the second control means via the communication line. With this configuration, when the monitor of the first control means fails, the monitor of the second control means can be used instead.
[0020]
More preferably, there is provided means for displaying the presence or absence of abnormality of the second control means. With this configuration, if the operator tries to switch the processor and the second control means is out of order, the switching can be stopped.
[0021]
More preferably, it comprises timer means for variably adjusting a communication time interval between the first control means and the second control means via the communication line. If the communication time interval is lengthened, the error between the data setting of the first processor and the data setting of the second processor increases, but the probability that the two processors are down at the same time decreases, and if the communication time interval is shortened, both processors The error between the data settings for the acoustic processing set in is reduced, and the real-time property is improved.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0023]
FIG. 1 is a configuration diagram of a dual acoustic system according to an embodiment of the present invention. The audio signal input / output system of the duplex acoustic system of the present embodiment includes an audio input unit 20, a data conversion unit 21 connected to the audio input unit 20, and a duplex that takes in the output of the data conversion unit 21 in parallel. First and second processors 22, 23, a digital switcher 24 to which the outputs of the processors 22, 23 are connected, a data inverse converter 25 that captures an output signal of the digital switcher 24, and a data inverse converter 25 And an audio output unit 26 connected to the output.
[0024]
A voice signal input from the voice input unit 20 (which is not limited to voice but generally refers to a sound signal) is converted by the data conversion unit 21 and subjected to acoustic processing by the first processor 22 and the second processor 23. The data is converted by the data reverse conversion unit 25 through the digital switcher 24 and output from the audio output unit 26.
[0025]
The data conversion unit 21 converts, for example, an input analog audio signal into a digital audio signal, and the data reverse conversion unit 25 converts the digital audio signal output from the processors 22 and 23 into an analog audio signal. It is not limited to the conversion process between the analog signal and the digital signal. If the signal output from the audio input unit 21 to the data conversion unit 21 is a digital signal based on a certain standard, the processors 22 and 23 process the digital signal. It may be converted into a digital signal of another standard that can be processed, and reverse converted.
[0026]
The digital switcher 24 has, for example, a 64-channel configuration, and # 1 to # 32ch are connected to the output of the first processor 22, and # 33 to # 64ch are connected to the output of the second processor 23. When the pattern A command is input, the inputs of # 1 to # 32ch are connected to the subsequent data reverse conversion unit 25, and when the pattern B command is input, the inputs of # 33 to # 64ch are connected to the subsequent data reverse conversion unit 25. To connect to.
[0027]
The control system of the dual acoustic system according to the present embodiment, which controls the above-described audio signal input / output system and performs control to give an acoustic effect to the input audio signal, includes an acoustic adjustment console (console) 30 and the sound. Main control means connected to the adjustment console 30, main PC 31 in this example, sub control means connected to the main PC 31 via a communication line, for example, Ethernet 32, sub PC 33, changeover switch section 34 in this example, And a net switching unit 35. The net switching unit 35 includes input terminals 35a and 35b and output terminals 35c and 35d. As shown in FIGS. 2A and 2B, connection switching between the terminals is performed as described later.
[0028]
The acoustic processing command data output from the main PC 31 is transmitted to the data conversion unit 21 through the arc net signal line 40, and then transmitted from the data conversion unit 21 to the data reverse conversion unit 25 through the signal line 41. The signal is transferred from the data reverse conversion unit 25 to the input terminal 35 a of the net connection unit 35 through the signal line 42.
[0029]
The acoustic processing command data output from the sub PC 33 is connected to the other input terminal 35b of the net connection unit 35 via an arc net signal line 43, and one output terminal 35c of the net connection unit 35 is connected to the arc net. The signal line 44 is connected to the first processor 22, and the other output terminal 35 d is connected to the second processor 23 by an arc net signal line 45.
[0030]
The net switching unit 35 is connected to the first processor 22 via a signal line 46, and a signal notifying that the first processor 22 has been powered off (powered off) is input to the net switching unit 35 via the signal line 46. The connection between the terminals is switched as described later. The net switching unit 35 is connected to the switch unit 34, and the connection between the terminals is switched when a switching command is input from the switch unit 34.
[0031]
Further, the net switching unit 35 and the main PC 31 are connected by a signal line 47, and when the terminal connection of the net switching unit 35 is switched, the main PC 31 is notified of this, and the net switching unit 35 and the digital switcher 24 are The pattern A command or the pattern B command described above is output to the digital switcher 24 in accordance with the switching of the terminal connection.
[0032]
The changeover switch unit 34 outputs a changeover command 34a that outputs the changeover command to the net changeover unit 35 when operated manually, and a sub PC abnormality display that displays the fact when an abnormality occurs in the sub PC 33 connected to the sub PC 33. 34b.
[0033]
In the dual acoustic system according to the present embodiment having the above-described configuration, the first processor 22 operates as a main processor during normal times (when the first processor 22 is not out of order). At this time, the net switching unit 35 is operated. The terminal-to-terminal connection is in the state shown in FIG.
[0034]
The main PC 31 that has received the acoustic adjustment command input to the acoustic adjustment console 30 processes the acoustic adjustment command, and converts the data conversion unit 21, the processors 22, 23, and the data reverse conversion unit 25 into controllable acoustic processing command data. And output to the signal line 40. The acoustic processing command data is transmitted to the first processor 22 through the signal line 41, the signal line 42, and the signal line 44. The first processor 22 converts various acoustic processings into audio signals based on the acoustic processing command data. Apply to. At this time, a pattern A command is given to the digital switcher 24 from the net switching unit 35, and the digital switcher 24 outputs the output of the first processor 22 to the data reverse conversion unit 25.
[0035]
The main PC 31 and the sub PC 33 communicate with each other in real time or at predetermined time intervals via the Ethernet 32. The main PC 31 transmits the acoustic adjustment command received from the console 30 to the sub PC 33, and the sub PC 33 receives the received sound adjustment command. Acoustic processing command data is uniquely generated from the acoustic adjustment command, and this acoustic processing command data is output to the second processor 23 through the signal line 43, the net switching unit 35, and the signal line 45. For this reason, the second processor 23 sets each data based on the sound adjustment command input from the console 30.
[0036]
The sub PC 33 may not be configured to independently generate the sound processing command data, but may be configured to send the sound processing command data from the main PC 31 to the sub PC 33. However, if the program for generating acoustic processing command data to be operated on the main PC 31 and the program for generating acoustic processing command data to be operated on the sub PC 33 are different programs, the probability that the main processor and the sub processor will be simultaneously reduced is reduced. This is preferable.
[0037]
If the sub PC 33 is configured to output the same acoustic processing command data as the main PC 31 to the sub processor, a timer for adjusting the real-time property and predetermined time interval of the communication performed via the Ethernet 32 is provided. It is preferable that the time interval can be adjusted.
[0038]
Increasing the time lag with this timer can reduce the probability of the main processor and sub-processor going down at the same time. By shortening the time lag, the real-time performance that matches the acoustic processing command data set for the main processor and sub-processor respectively. This is because the degree of freedom of selection by the operator increases according to the system.
[0039]
If the first processor 22 fails while operating the acoustic system with the first processor 22 as the main processor, the audio output is not cut off, but the acoustic adjustment is not accepted, and the first processor 22 The acoustic processing state remains the acoustic processing state immediately before the failure. When the operator wants to perform another acoustic adjustment from the current state, the changeover switch 34a of the changeover switch unit 34 is manually switched. By this switching operation, the connection between terminals of the net connection unit 35 is switched to the state shown in FIG.
[0040]
When the operator operates the changeover switch 34a, if the sub PC 33 is out of order, that is, the acoustic processing command data set in the sub processor 23 is the same as the acoustic processing command data set in the main processor 22. If they are different, since the display 34b is lit, the operator can stop the changeover operation of the changeover switch 34a.
[0041]
If the power of the main processor 22 is turned off while the main processor 22 is operating, the sound output from the processor 22 is cut off and the sound becomes silent. For this reason, when the power-off signal is output from the main processor 22 to the net switching unit 35, the net switching unit 35 automatically and forcibly switches the terminal connection to the state shown in FIG.
[0042]
When the connection between the terminals of the net switching unit 35 is switched to the state shown in FIG. 2B, the pattern B command is output from the net switching unit 35 to the digital switcher 24, and the digital switcher 24 is acoustically processed by the second processor 23. An audio signal is selected and output to the data reverse conversion unit 25, and the audio signal subjected to acoustic processing by the second processor 23 is output from the audio output unit 26. Before and after the moment of the control switching, the acoustic processing command data of the first processor 22 and the second processor 23 are the same. Pleasure can be prevented.
[0043]
The acoustic signal command data output from the main PC 31 to the signal line 40 is transmitted from the data conversion unit 21 to the data reverse conversion unit 25 via the signal line 41, and from the data reverse conversion unit 25, the signal line 42, the signal The data is transmitted to the second processor 23 via the line 45, and the main PC 31 now controls the second processor 23 as the main processor. The main PC 31 can know that the main processor has been switched to the second processor 23 based on the notification sent from the net switching unit 35 via the signal line 47.
[0044]
Even after the first processor 22 fails and the net switching unit 35 is switched as described above, the main PC 31 and the sub PC 33 communicate with each other via the Ethernet 32, and the acoustic processing command data output from the sub PC 33. Is transmitted to the first processor 22 which newly becomes a sub-processor. Therefore, when the failed first processor 22 is replaced, data based on the same acoustic adjustment command as that of the second processor 23 is set in the new first processor 22, and the operator switches the changeover switch 34a. When is operated, the net switching unit 35 switches to the state shown in FIG.
[0045]
Thus, contrary to the above, the first processor 22 becomes the main processor and the second processor 23 becomes the sub processor, the main PC 31 sets the sound processing command data in the main processor, and the sub PC 33 sets the sound processing in the sub processor. Command data will be set. It is possible to prevent the sound output state from changing before and after the switching.
[0046]
Since the main PC 31 receives a notification from the net connection unit 35 that the inter-terminal connection in the net connection unit 35 described above, that is, the switching between the main processor and the sub processor has occurred, the main PC 31 displays this information on the monitor, The log information is left on the hard disk or the like. If the monitor of the main PC 31 breaks down, the main PC 31 can control the sub PC 33 via the Ethernet 32. Therefore, data to be displayed on the monitor of the main PC 31 is displayed on the monitor attached to the sub PC 33. Thus, the reliability of the system is further improved by enabling the main PC 31 to control the sub PC 33.
[0047]
In the above description, when the main processor fails, the sub processor is switched to the main processor as it is. However, when the time lag by the timer is long, the error between the sound processing command data between the processors may be large. It is done. For this reason, before switching the sub processor to the main processor, the acoustic processing command data set in the main processor is sent to the sub PC 33 via the Ethernet 32, and the latest acoustic processing command data is set in the sub processor to cause the error. It is also possible to switch the processor after eliminating.
[0048]
FIG. 3 is a flowchart showing a processing procedure when the above-described main processor fails. When the main processor fails (step S1), the operator switches the main processor to the sub processor and presses the changeover switch 34a to switch the sub processor to the main processor (step S2). This switching operation command is received by the net switching unit 35 (step S3). Alternatively, when an event occurs in which the power supply of the main processor fails (step S4), the process proceeds from step S4 to step S3, and the net switching unit 35 receives a power-off signal from the main processor.
[0049]
Thereby, the control command (acoustic processing command data) from the main PC 31 is output to the sub processor (new main processor) (step S5), and at the same time, the control command (acoustic processing command data) from the sub PC 33 is output to the main processor (new At the same time, the digital switcher 24 switches the audio signal output from the main processor (new subprocessor) to the subprocessor (new main processor) (step S7).
[0050]
FIG. 4 is a flowchart showing a processing procedure after replacing a failed processor. The replaced processor is a sub-processor, and the operator depresses the changeover switch 34a to make this processor the main processor (step S10). The switch switching signal is received by the net switching unit 35 to switch the connection between terminals (step S11).
[0051]
Thereby, the control command (acoustic processing command data) from the main PC 31 is output to the new main processor (step S12), and at the same time, the control command (acoustic processing command data) from the sub PC 33 is output to the new sub processor ( At the same time, the digital switcher 24 switches the audio signal output to the output from the new main processor (step S14).
[0052]
According to the embodiment described above, in addition to the duplication of the processor for performing the acoustic processing, the PC for giving the acoustic processing command data to the processor is also duplicated, so the probability that the two processors are down at the same time is greatly reduced. In addition to improving the reliability of the system, it is possible to avoid the discontinuity of the output sound when the processor is switched.
[0053]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it can prevent that an audio | voice output state changes at the time of switching of a main system and a sub-system, and can provide the duplex acoustic system with high system reliability.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a dual acoustic system according to an embodiment of the present invention. FIG. 2 is a connection state diagram of a net switching unit configuring the dual acoustic system according to an embodiment of the present invention. FIG. 4 is a flowchart showing a processor switching processing procedure in a dual acoustic system according to an embodiment of the present invention. FIG. 4 is a processor switching processing procedure performed after replacement of a faulty processor in a dual acoustic system according to an embodiment of the present invention. FIG. 5 is a block diagram of a conventional dual acoustic system.
20 audio input unit 21 data conversion unit 22 first processor 23 second processor 24 digital switcher 25 data reverse conversion unit 26 audio output unit 30 console (acoustic adjustment console)
31 Main PC
32 Ethernet 33 Sub PC
34 changeover switch part 35 net changeover part 40, 41, 42, 43, 44, 45 signal line of arc net

Claims (10)

A first processor for performing acoustic processing on the input audio signal; a second processor for performing acoustic processing on the audio signal; and first control means for outputting a data setting command for acoustic processing to the first processor And second control means connected to the first control means via a communication line for obtaining information relating to acoustic processing by the first control means and outputting a data setting command for acoustic processing to the second processor; A dual acoustic system comprising: switch means for selecting an output of one processor or an output of the second processor and outputting an acoustically processed audio signal. A connection between the first processor and the first control means and a connection between the second processor and the second control means; a connection between the first processor and the second control means; and The dual acoustic system according to claim 1, further comprising switching means for switching to a connection between a second processor and the first control means. 3. The dual acoustic system according to claim 2, further comprising a manual switch that outputs a switching command to the switching unit. 4. The dual acoustic system according to claim 2, wherein the first processor includes means for outputting a switching command to the switching means when the power is turned off. The duplex sound system according to any one of claims 2 to 4, wherein the switching means includes means for notifying the first control means of connection switching when connection switching occurs. When the connection switching is performed by the switching unit, the second control unit acquires and outputs the latest data setting command output from the first control unit via the communication line, and the data of the first processor 6. The dual acoustic system according to claim 2, further comprising means for switching the connection after making the setting and the data setting of the second processor the same. 7. The first control means according to claim 2, further comprising a monitor for displaying whether the destination of outputting the data setting command is the first processor or the second processor. The duplex sound system according to any one of the above. 8. The dual acoustic system according to claim 1, wherein the first control unit has a function of controlling the second control unit via the communication line. The duplex acoustic system according to any one of claims 1 to 8, further comprising means for displaying whether or not the second control means is abnormal. The timer means for variably adjusting the time interval of communication via the communication line between the first control means and the second control means. Dual sound system.

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