JP4077064B2 - mixer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mixer, and more particularly, to a mixer that improves the degree of freedom in selecting an audio signal transmission path inside the mixer.
[0002]
[Prior art]
In a conventional mixer, when audio signals input to a plurality of input channels are mixed and output to an arbitrary output channel, for example, the audio signals input to eight input channels (IN) 1 to 8 are freely selected. FIG. 1 shows an example of a circuit configuration in the case of mixing and assigning (assigning) to four output channels (OUT) 1 to 4.
[0003]
That is, when the input channel 1 and the input channel 3 are mixed and output to the output channel 2, the bus select switch i12 and the bus select switch i32 are turned on to turn on the input channel 1. And a signal transmission path for mixing the input channel 3 and outputting them to the output channel 2 are selected.
[0004]
Therefore, according to the mixer having the circuit configuration shown in FIG. 1, the selection of the combination of the audio signal mixes between the plurality of input channels and the output channels of the mixed audio signals is made in a matrix. The bus select switches i11 to i84 that connect the provided buses can be freely selected by turning on / off.
[0005]
However, in a mixer having a circuit configuration as shown in FIG. 1, if the number of output channels is increased, a matrix of bus select switches corresponding to the number of output channels multiplied by the number of input channels is required. There was a problem that the circuit scale became large.
[0006]
In general, since it is rare to output audio signals to all output channels at the same time, all the buses are rarely used at the same time, and many circuits are idled and are wasted. It was.
[0007]
On the other hand, by limiting the number of output channels that can be output at the same time, a circuit configuration in which the number of buses is limited to suppress an increase in circuit scale, for example, as shown in FIG. IN) 1 to 8, eight output channels (OUT) 1 to 8, and four buses (BUS) 1 to 4.
[0008]
In other words, in the circuit configuration shown in FIG. 2, a plurality of output channels are fixedly connected to one bus so that the circuit scale does not increase even if the number of output channels increases.
[0009]
However, in the circuit configuration of FIG. 2, for example, there is a limitation that different audio signals different from each other cannot be output to the output channel 1 and the output channel 5, and selection of the output channel that outputs the mixed audio signal There was a problem that the degree of freedom was limited.
[0010]
[Problems to be solved by the invention]
The present invention has been made in view of the various problems of the prior art as described above. The object of the present invention is to make the number of signal transmission paths smaller than the number of output channels, and to The transmission path and output channel can be freely connected to improve the freedom of selection of the audio signal transmission path inside the mixer, and unused signal transmission paths inside the mixer are automatically selected. Thus, an object of the present invention is to provide a mixer that does not limit the degree of freedom in selecting a signal transmission path and that improves the operability when selecting a signal transmission path.
[0011]
[Means for Solving the Problems]
  In order to achieve the above object, the invention according to claim 1 of the present invention is an audio signal input means having a plurality of input channels for inputting audio signals, and an arbitrary input among the plurality of input channels. Input channel designating means for designating a channel; audio signal output means comprising a plurality of output channels for outputting audio signals; output channel designating means for designating an arbitrary output channel among the plurality of output channels; Fewer signal transmission paths than the output channel connecting the plurality of input channels and the plurality of output channels;An input connection means capable of connecting the input channel designated by the input channel designation means to one or a plurality of signal transmission paths, and an output channel designated by the output channel designation means connected to any one of the signal transmission paths Possible output connection means, unused transmission path selection means for selecting an unused signal transmission path that is not connected to any of the plurality of output channels, and any one output channel by the output channel designation means. When any one input channel is specified by the input channel specifying means and the output channel is connected to any signal transmission path, the input channel is connected to the signal transmission path. The input connection means is controlled so that the output channel is in any signal transmission path. Is not connected, the unused transmission path selection means selects an unused signal transmission path to control the output connection means to connect the signal transmission path to the output channel and to change the signal transmission path. Control means for controlling the input connection means to connect to the input channel;It is made to have.
[0012]
  Further, the invention described in claim 2 of the present invention is described in claim 1 of the present invention.inventionInAn input channel designating operator for designating an arbitrary input channel in the plurality of input channels; and an output channel designating operator for designating an arbitrary output channel in the plurality of output channels. When any one of the output channels connected to any signal transmission path is designated by the output channel operator, any one of the output channels is designated by the input channel designation operator. 1 In response to designation of one input channel, the input connection means is controlled so as to alternately switch between connection and non-connection of the input channel and the signal transmission path.It is what I did.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of a mixer according to the present invention will be described in detail with reference to the accompanying drawings.
[0015]
FIG. 3 is a block diagram showing the overall configuration of a musical sound signal recording apparatus provided with an example of an embodiment of a mixer according to the present invention.
[0016]
This musical tone signal recording apparatus is configured to control the overall operation by using a central processing unit (CPU) 10, and this CPU 10 is referred to an attached flowchart via a bus 11. However, a read only memory (ROM) 12 storing a program for various processes executed by the CPU 10 to be described later, a random access memory (RAM) 14 as a working area, a mixer unit 16, and a recorder unit 18 and the operation panel 20 are connected.
[0017]
Here, the mixer unit 16 will be described in detail with reference to FIG. 4 conceptually showing the configuration of the mixer unit 16. The mixer unit 16 includes eight input channels (IN) 1 to 8 and these inputs. Audio signals input to channels 1 to 8 are taken into internal buses (BUS) 1 to 4 via a volume and an input amplifier. Here, the internal buses 1 to 4 are selected by the bus select switches i11 to i84 and the selection switches SEL1 to SEL8, and the audio signals taken in to the selected internal buses 1 to 4 are supplied to freely select the audio signals. And can be freely assigned (assigned) to the eight output channels (OUT) 1-8.
[0018]
The point of the present invention lies in the selection processing of the internal buses 1 to 4 in the mixer unit 16, and will be described in detail later with reference to a flowchart.
[0019]
The output channels 1 to 8 are associated with the eight tracks (TR) 1 to 8 of the recorder unit 18 in a one-to-one relationship. That is, the audio signal output from the output channel 1 is output to the track 1, the audio signal output from the output channel 2 is output to the track 2, the audio signal output from the output channel 3 is output to the track 3, The audio signal output from the output channel 4 is output to the track 4, the audio signal output from the output channel 5 is output to the track 5, the audio signal output from the output channel 6 is output to the track 6, and the output channel The audio signal output from the output channel 7 is output to the track 7, and the audio signal output from the output channel 8 is output to the track 8.
[0020]
The timbre signals output from the tracks 1 to 8 of the recorder unit 18 are output as stereo outputs to the L (left) channel and the R (right) channel via the output amplifier and volume.
[0021]
FIG. 5 shows a schematic configuration of a part of the operation panel 20 according to the present invention. The operation panel 20 includes an input channel 1 serving as an operator for adjusting the volumes of the input channels 1 to 8. Volume control unit 100-1, input channel 2 volume control unit 100-2, input channel 3 volume control unit 100-3, input channel 4 volume control unit 100-4, input channel 5 volume control unit 100-5, input channel 6 Volume control unit 100-6, input channel 7 volume control unit 100-7 and input channel 8 volume control unit 100-8, and input channel 1 designation as a control unit for designating input channels 1 to 8 for mixing audio signals Operator 102-1, input channel 2 designation operator 102-2, input channel Channel 3 designating operator 102-3, input channel 4 designating operator 102-4, input channel 5 designating operator 102-5, input channel 6 designating operator 102-6, input channel 7 designating operator 102-7 and input The channel 8 designation operator 102-8 and the output channels 1 to 8 to which the mixed audio signal is output, that is, the tracks 1 to 8 to which the mixed audio signal is to be recorded are designated and the tracks 1 to 8 are designated. Controls for selecting a state (four states: “input to track: source”, “recording on track (recording): rec”, “playback of track: play” and “mute of track: mute”) A track 1 designation operator 104-1, a track 2 designation operator 104-2, a track 3 designation operator 104-3, 4 specifying operator 104-4, track 5 specifying operator 104-5, track 6 specifying operator 104-6, track 7 specifying operator 104-7, track 8 specifying operator 104-8, and recorder unit A track 1 volume operator 106-1, a track 2 volume operator 106-2, a track 3 volume operator 106-3, a track 4 volume operator 106-, which are operators for adjusting the output volume of each track 1-8. 4. Track 5 volume operator 106-5, track 6 volume operator 106-6, track 7 volume operator 106-7, track 8 volume operator 106-8, and clear (CLR) for canceling various settings An operator 108 is provided.
[0022]
While the input channel 1 designation operation element 102-1 to the input channel 8 designation operation element 102-8 are being pressed, each operation element takes an on value, and while the input operation is not being performed ( off).
[0023]
Similarly, each of the operators takes an on value while the track 1 designation operator 104-1 to the track 8 designation operator 104-8 are being pressed, and is off when the pressure operation is not being performed ( off), the clear operator 108 takes an on value while the clear operator 108 is being pressed, and an off value while the clear operator 108 is not being pushed.
[0024]
As parameters indicating the state of the musical tone signal recording apparatus, “TR (N)”, “G (M)”, and “i (M, K)” are set as parameters that can be confirmed by the user. “SEL (N)” is set as a parameter that cannot be confirmed. Hereinafter, each parameter described above will be described. In this specification, “N” is a variable that takes a natural number from 1 to 8 to indicate the track number of the output channel, and “M” is the track number of the input channel or the track number of the output channel. For the purpose of illustration, it is a variable that takes a natural number from 1 to 8, and “K” is a variable that takes a natural number from 1 to 4 to indicate the bus number of the internal bus.
[0025]
(1) TR (N)
There are four possible values: “input to track: source”, “recording (recording) on track: rec”, “playback of track: play” and “mute of track: mute”. Here, “recording on track (recording): rec” and “playback of track: play” indicate the operating state of the recorder unit 18 in track N, and “input to track: source” and “track recording”. “Mute” indicates the output state of the mixer section 16 with respect to the track N. When the track 1 designation operation element 104-1 to the track 8 designation operation element 104-8 are individually pushed down and pushed up (returned to the original state after being pushed down once), the value of TR (N) becomes “source → rec → It changes cyclically in the order of “play → mute → source...
[0026]
Here, “source” indicates a state in which the signal of the internal bus selected by SEL (N) is received and output as a track, but it is not recorded on the track.
[0027]
“Rec” indicates a state in which the signal of the internal bus selected by SEL (N) is received and output as a track and is recorded on the track.
[0028]
“Play” indicates a state in which the signal recorded on the track is used as the output of the track without receiving the signal of the internal bus.
[0029]
“Mute” indicates a state in which no signal is received from the internal bus and no signal is sent to the output of the track.
[0030]
(2) G (M)
This indicates the gain of the input channel M, and takes the values of line and microphone. When the input channel 1 designation operator 102-1 to input channel 8 designation operator 102-8 are pushed down and pushed up alone, the value of G (M) changes alternately between the line (line) and the microphone (mic).
[0031]
(3) i (M, K)
A bus select switch located at the intersection of the input channel M and the internal bus K is shown and takes on and off values. When ON, the audio signal of the input channel M is applied to the internal bus K, and when OFF, the audio signal of the input channel M is not applied to the internal bus K. Note that the user does not know which internal bus K the audio signal of the input channel M is applied to, but can understand which audio signal of the input channel M is supplied to the track N of the output channel. It has become.
[0032]
(4) SEL (N)
Indicating the selection switch for track N, possible values are “off”, “1”, “2”, “3” and “4”.
[0033]
Note that the track 1 designation operator 104-1 to the track 8 designation operator 104-8 are self-illuminating pressing operators with built-in LEDs, which emit light in orange when “TR (N) = source”, and “TR ( When “N) = rec”, the light is emitted in red, when “TR (N) = play”, the light is emitted in green, and when “TR (N) = mute”, the light is turned off.
[0034]
Further, the input channel 1 specifying operator 102-1 to the input channel 8 specifying operator 102-8 are also self-illuminated pressing operators with built-in LEDs, like the track 1 specifying operator 104-1 to the track 8 specifying operator 104-8. In a state where nothing is operated, light is emitted in red when “G (M) = line”, and light is emitted in green when “G (M) = mic”.
[0035]
When the track N designation operator (104-1 to 104-8) is depressed, the LEDs of the input channel 1 designation operator 102-1 to the input channel 8 designation operator 102-8 corresponding to the input channel M are displayed. When there is an internal bus K supplying an audio signal to the track N, it emits orange light when “i (M, K) = on” and turns off when “i (M, K) = off”. To do.
[0036]
Therefore, when the value of TR (N) changes from mute to source, if the track N has not yet selected an internal bus, an unused internal bus is automatically selected, that is, SEL (N ) Is automatically set to something other than off. If there is no unused internal bus already, the change is made to “mute → play”, and the value is changed by two values of play / mute.
[0037]
The flag P is a flag indicating whether or not there is an on event of another button between the on event and the off event of the track N. When there is an on event of another button, “P = 1” The value of “P = 0” is taken when there is no ON event of other buttons.
[0038]
Next, changes in parameters in the operations of the track 1 specifying operator 104-1 to the track 8 specifying operator 104-8 and the input channel 1 specifying operator 102-1 to the input channel 8 specifying operator 102-8 will be described. .
[0039]
(1) When the input channel M designation operator (102-1 to 102-8) is pushed down and pushed up while the track N designation operator (104-1 to 104-8) is being pushed down
When there is an internal bus K supplying an audio signal to the track N, i (M, K) is alternately turned on / off every time the input channel M designation operator (102-1 to 102-8) is depressed. To change. When there is no internal bus supplying an audio signal, an unused internal bus K is selected, the audio signal of the internal bus K is supplied to the track N, i (M, K) is turned on, and the input channel M audio signals are supplied to the internal bus K. If there is no unused internal bus, nothing is changed.
[0040]
(2) A case where another track N2 designation operator (104-1 to 104-8) is pushed down while the track N1 designation operator (104-1 to 104-8) is depressed.
If there is no internal bus supplying an audio signal to the track N2, nothing is changed. If there is an internal bus K (N2) supplying an audio signal to the track N2 and no internal bus supplying an audio signal to the track N1, the audio signal of the internal bus K (N2) is supplied to the track N1. (The internal bus K (N2) is assigned to SEL (N1)). There is an internal bus K (N2) that supplies an audio signal to the track N2, and there is an internal bus K (N1) that supplies an audio signal to the track N1, and this internal bus K (N1) is the other bus. When audio signals are not supplied to all tracks, the internal bus K (N1) is opened (all bus select switches for the internal bus K (N1) are turned off), and the track N1 is internally connected. An audio signal of the bus K (N2) is supplied (the internal bus K (N2) is assigned to SEL (N1)). There is an internal bus K (N2) that supplies an audio signal to the track N2, and there is an internal bus K (N1) that supplies an audio signal to the track N1, and this internal bus K (N1) is the other bus. When the audio signal is supplied to the track, the audio signal of the internal bus K (N2) is supplied to the track N1 (the internal bus K (N2) is assigned to SEL (N1)).
[0041]
(3) When the clear operator 108 is pushed down while the track N designation operator (104-1 to 104-8) is being pushed down
When TR (N) is play or mute and there is an internal bus K (N) that supplies an audio signal to track N, and this internal bus K (N) does not supply an audio signal to another track The internal bus K (N) is released (SEL (N) is turned off and all bus select switches for the internal bus K (N) are turned off). When TR (N) is source or rec and there is an internal bus K (N) supplying an audio signal to track N, and this internal bus K (N) does not supply an audio signal to another track The internal bus K (N) is opened (SEL (N) is turned off and all bus select switches for the internal bus K (N) are turned off), and TR (N) is set to mute. change. When TR (N) is play or mute and there is an internal bus K (N) that supplies an audio signal to track N, and this internal bus K (N) supplies an audio signal to another track The supply of the audio signal from the internal bus K (N) to the track N is stopped (SEL (N) is turned off). When TR (N) is source or rec and there is an internal bus K (N) supplying an audio signal to track N, and this internal bus K (N) supplies an audio signal to another track In this case, the supply of the audio signal of the internal bus K (N) to the track N is stopped (SEL (N) is turned off), and TR (N) is changed to mute.
[0042]
Next, with reference to the flowchart, FIG. 6 shows a flowchart of the main routine. In this main routine, first, when initial value setting processing (step S602) is performed, the track 1 Processing for scanning the operation state of the designated operator 104-1 to the track 8 designated operator 104-8 (Step S 606: In Step S 606, it is simply referred to as “output key scan”) and input channel Other than the process of scanning the operation state of the 1 designation operator 102-1 to the input channel 8 designation operator 102-8 (Step S608: In Step S608, it is simply referred to as “input key scan”). The sub routine is processed (step S604).
[0043]
When the process of step S604 is completed, a process (step S606) of scanning the operation state of the track 1 specifying operator 104-1 to the track 8 specifying operator 104-8 is performed, and the input channel 1 specifying operator 102 is further processed. When the process of scanning the operation state of the −1 to input channel 8 designating operator 102-8 is performed (step S608), the process returns to step S604 and the process is repeated.
[0044]
FIG. 7 shows a process for scanning the operation state of the track 1 designation operator 104-1 to track 8 designation operator 104-8 in step S606 as a sub-routine. Is set (step S702), and the variable N is incremented by 1 (step S704).
[0045]
Then, after performing the process of scanning the track N (Step S706: In Step S706, it is simply referred to as “scan of output key N”), whether or not “N = 8” is determined. (Step S708), if not "N = 8", the process returns to step S704 to repeat the process, and if "N = 8", the process returns to the main routine.
[0046]
In the following description, “track N = on” is an output channel N designation operator on event, “track = off” is an output channel N designation operator off event, and “input channel M = on” is an input. An on event of the channel M designation operator is shown.
[0047]
FIG. 8 shows the process of scanning the track N in step S706 as a sub routine. First, it is determined whether or not “track N = on” (step S802), and “track N” is determined. If it is determined that the value is not “on”, the process directly returns to the sub-routine shown in FIG.
[0048]
On the other hand, if it is determined in step S802 that “track N = on”, the flag P is set to 0 (step S804), and a process of performing a two-key press scan is executed (step S805).
[0049]
FIG. 9 shows a process for performing a two-key press scan in step S805 as a subroutine. First, 0 is set in a variable M (step S806), and then the variable M is incremented by 1 (step S808). .
[0050]
These processes are paired with step S826 to increment the variable M from 1 to 8.
[0051]
Next, with reference to step S810 to step S814, the operation when the input channel M specifying operator is pressed while the output channel N specifying operator is pressed will be described.
[0052]
That is, it is determined whether or not “input channel M = on” (step S810). If “input channel M = on”, the selection process (step S812) is performed, and then the flag P is set to 1. Is set (step S814).
[0053]
When the process of step S814 is completed, or when it is determined that “input channel M = on” is not satisfied in step S810, the process proceeds to step S816, and it is determined whether “M = N”.
[0054]
Next, with reference to step S816 to step S824, the operation when the output channel M designation operator is pressed while the output channel N designation operator is being pressed will be described.
[0055]
That is, if it is determined in step S816 that “M = N” is not satisfied, it is determined whether or not “track M = on” (step S818), where “track M = on”. Is determined, it is determined whether or not “SEL (M) = off” (step S820).
[0056]
If it is determined in step S820 that “SEL (M) = off” is not satisfied, the clear process (step S822) is performed and then SEL (M) is set to SEL (N). The bus selected by SEL (M) indicated by the output channel M designation operator pressed from 1 is assigned, and the flag P is set to 1 (step S824).
[0057]
When the process of step S824 is completed, if it is determined that “M = N” in step S816, if it is determined that “track M = on” is not satisfied in step S818, and if “SEL (M) = off”. If it is determined that there is, the process proceeds to step S826 to determine whether or not “M = 8”.
[0058]
If it is determined in step S826 that “M = 8” is not satisfied, the process returns to step S808, and if it is determined that “M = 8”, a subroutine for processing for performing a scan with two key presses is executed. Then, the process proceeds to step S828 of the process for scanning the track N in FIG. 8, and it is determined whether or not the clear operator 108 is on.
[0059]
Next, with reference to step S828 to step S836, the operation when the clear operator is pressed while the output channel N designation operator is pressed will be described.
If it is determined in step S828 that the clear operator 108 is on, a clear process (step S830) is performed, then 1 is set in the flag P (step S832), and “TR (N) = play” It is determined whether or not (step S834).
[0060]
If it is determined in step S834 that “TR (N) = play” is not satisfied, “TR (N) = mute” is set, and the process proceeds to step S838.
[0061]
Also, if it is determined in step S828 that the clear operator 108 is not on and if it is determined in step S834 that “TR (N) = play”, the process jumps to step S838.
[0062]
In step S838, it is determined whether or not “track N = off”. If it is determined that there is no “track N = off”, the process returns to step S806 to determine that “track N = off” exists. If YES in step S840, the flow advances to step S840 to determine whether “P = 0”.
[0063]
If it is determined in step S840 that “P = 1”, the input channel M designation operator, the output channel M designation operator, or the clear operator is displayed while the output channel N designation operator is being pressed. As it is pushed, the process returns to the sub-routine shown in FIG.
[0064]
On the other hand, if it is determined in step S840 that “P = 0”, the input channel M designation operator, the output channel M designation operator, or the clear operation while the output channel N designation operator is being pressed. Assuming that the child has not been pushed, a cyclic routine for cyclic change is executed (step S842), and then the routine returns to the sub routine shown in FIG.
[0065]
FIG. 10 shows the selection process in step S812 as a sub routine. In this process, the variable K indicates the number of the internal bus, and the variable J indicates the channel number of the output.
[0066]
First, it is determined whether or not “SEL (N) = off” (step S1002). If it is determined that “SEL (N) = off”, 0 is set to the variable K (step S1004). ).
[0067]
Next, an operation for selecting an unused internal bus will be described with reference to steps S1006 to S1016.
[0068]
First, the variable K is incremented by 1 and 0 is set in the variable J (step S1006), and it is determined whether or not “K = 5” (step S1008).
If it is determined in step S1008 that “K = 5”, the process returns to the sub-routine shown in FIG. 8, and if it is determined that “K = 5” is not satisfied, the variable J is incremented by 1. (Step S1010).
[0069]
Then, it is determined whether or not “SEL (J) = K” (step S1012). If it is determined that “SEL (J) = K”, the process returns to step S1006, and “SEL (J) If it is determined that “K” is not satisfied, it is determined whether or not “J = 8” (step S1014).
[0070]
If it is determined in step S1014 that “J = 8” is not satisfied, the process returns to step S1010. If it is determined that “J = 8”, the process proceeds to step S1016, where “SEL (N) = K”, After setting “i (M, SEL (N)) = on” and “TR (N) = source”, the process returns to the sub-routine shown in FIG.
[0071]
On the other hand, if it is determined in step S1002 that “SEL (N) = off” is not satisfied, it is determined whether “i (M, SEL (N)) = on” (step S1018). If it is determined that “i (M, SEL (N)) = on”, “i (M, SEL (N)) = off” is set (step S1020), and then the subroutine shown in FIG. 8 is performed. When it is determined that “i (M, SEL (N)) = on” is not satisfied, “i (M, SEL (N)) = on” is set (step S1022), and the sub-process shown in FIG. • Return to the routine.
[0072]
Next, referring to FIG. 11, it is checked whether the internal bus that is no longer used in the output track N is used in the other output track J. If it is not used in all the other output tracks J, the internal bus An operation for turning off the bus select switch i (M, SEL (N)) related to the bus will be described.
[0073]
In this flowchart, a variable J is a variable having values 1 to 8 representing other output tracks.
[0074]
FIG. 11 shows the clear processing in step S822 and step S830 as a sub-routine. First, after setting 0 to the variable J (step S1102), the variable J is incremented by 1 (step S1104). Then, it is determined whether or not “N = J” (step S1106).
[0075]
If it is determined in step S1106 that “N = J” is not satisfied, it is determined whether or not “SEL (N) = SEL (J)” (step S1108), and “SEL (N) = SEL ( J) ", if not, the process proceeds to step S1110.
[0076]
On the other hand, if it is determined in step S1106 that “N = J”, the process jumps to step S1110.
[0077]
In step S1110, it is determined whether or not “J = 8”. If it is determined that “J = 8” is not satisfied, the process returns to step S1104, and if “J = 8” is determined. Advances to step S1112, i (1, SEL (N)), i (2, SEL (N)), i (3, SEL (N)), i (4, SEL (N)), i (5, SEL (N)), i (6, SEL (N)), i (7, SEL (N)) and i (8, SEL (N)) are turned off, and then the process proceeds to step S1114.
[0078]
On the other hand, if it is determined in step S1108 that “SEL (N) = SEL (J)”, the process proceeds to step S1114.
[0079]
In step S1114, SEL (N) is turned off, and the process returns to the sub routine shown in FIG.
[0080]
Next, with reference to FIG. 12, the operation when the output channel N designation operator is pushed down and pushed up alone will be described.
[0081]
FIG. 12 shows cyclic change processing in step S842 as a sub-routine. First, TR (N) is set in variable S (step S1202), and whether or not “S = source”. If it is determined that “S = source”, the process proceeds to step S1206 to set “rec” in TR (N), and then proceeds to step S1208, where “S = source”. If it is determined that it is not, the process jumps to step S1208.
[0082]
In step S1208, it is determined whether or not “S = rec”. If it is determined that “S = rec”, the process proceeds to step S1210 to set play in TR (N). The process proceeds to step S1212. If it is determined that “S = play” is not true, the process jumps to step S1212.
[0083]
In step S1212, it is determined whether or not “S = play”. If it is determined that “S = play”, the process proceeds to step S1214, and mute is set in TR (N). From step S1216, if it is determined that “S = play” is not true, the process jumps to step S1216.
[0084]
In step S1216, it is determined whether or not “S = mute”. If it is determined that “S = mute”, the process proceeds to step S1218 to set source in TR (N). From step S1220, if it is determined that “S = mute” is not true, the process jumps to step S1220.
[0085]
In step S1220, it is determined whether or not SEL (N) is off. If it is determined that SEL (N) is off, internal bus selection processing (step S1222) is performed and then FIG. When it is determined that SEL (N) is not OFF, the routine returns directly to the subroutine shown in FIG.
[0086]
Next, referring to FIG. 13, TR (N) (the state of the recorder section in track N) has changed from “mute” to “source” when the output channel N designation operator is pushed down and pushed up alone. An operation for selecting an unused internal bus in this case will be described.
[0087]
In this processing, the variable K indicates the internal bus number, and the variable J indicates the output channel number.
[0088]
FIG. 13 shows the internal bus selection process in step S1222 as a sub-routine. First, 0 is set in variable K (step S1302), then variable K is incremented by 1 and variable J is set to 0. Is set (step S1304), and it is determined whether or not “K = 5” (step S1306).
[0089]
If it is determined in step S1306 that “K = 5”, “play” is set in TR (N) (step S1316), and the process returns to the sub-routine shown in FIG. If it is determined that the variable J is not, the variable J is incremented by 1 (step S1308).
[0090]
Then, it is determined whether or not “SEL (J) = K” (step S1310). If it is determined that “SEL (J) = K”, the process returns to step S1304, and “SEL (J) If it is determined that “= K” is not satisfied, it is determined whether or not “J = 8” (step S1312).
[0091]
If it is determined that “J = 8” is not satisfied in step S1312, the process returns to step S1308. If it is determined that “J = 8”, the process proceeds to step S1314, and “SEL (N) = K” is obtained. After setting, the process returns to the sub-routine shown in FIG.
[0092]
On the other hand, if it is determined in step S1002 that “SEL (N) = off” is not satisfied, it is determined whether “i (M, SEL (N)) = on” (step S1018). If it is determined that “i (M, SEL (N)) = on”, “i (M, SEL (N)) = off” is set (step S1020), and then the subroutine shown in FIG. 8 is performed. When it is determined that “i (M, SEL (N)) = on” is not satisfied, “i (M, SEL (N)) = on” is set (step S1022), and the sub-process shown in FIG. • Return to the routine.
[0093]
Next, the operation when the input channel M designation operator is pushed down and pushed up will be described with reference to FIG.
[0094]
Note that in the output key scan (step S606), if the “track N = on” of the output channel N designation operator is not detected or “track N = off” is not detected, the input key scan is performed. Since it is not possible to enter this processing routine via (Step S608), this processing routine can perform determination and processing in the case where the input channel M designation operator is pushed down and pushed up alone.
[0095]
FIG. 14 shows a process for scanning the operation state of the input channel 1 designation operator 102-1 to input channel 8 designation operator 102-8 in step S608 as a sub-routine. Is set to 0 (step S1402), and then the variable M is incremented by 1 (step S1404).
[0096]
Then, after performing the process of scanning the input channel M (Step S1406: In Step S1406, it is simply referred to as “scan of input number M”), it is determined whether or not “M = 8”. (Step S1408), if not "M = 8", the process returns to step S1404 to repeat the process. If "M = 8", the process returns to the main routine.
[0097]
FIG. 15 shows a process of scanning the input channel M in step S1406 as a sub routine. First, it is determined whether or not “input channel M = on” (step S1502). If the input channel M is not “on”, the process directly returns to the sub-routine shown in FIG.
[0098]
On the other hand, if “input channel M = on”, it is determined whether or not mic is set in G (M) (step S1504), and it is determined that mic is set in G (M). If YES in step S1506, the flow advances to step S1506, line is set in G (M), and the process returns to the sub-routine shown in FIG. 14. If it is determined that mic is not set in G (M), step S1506 is executed. Proceeding to step S1508, mic is set in G (M), and then the process returns to the sub-routine shown in FIG.
[0099]
In this embodiment, the user repeatedly depresses and pushes the output channel N designation operator alone, and changes TR (N) (the state of the recorder unit in track N) from “play or mute” to “source or rec”. When changed (specifically, when changing from “mute” to “source”), an unused internal bus is selected. Similarly, the user sets the output channel N designation operator alone. Repeatedly pushing and pushing up, TR (N) (recorder state at track N) changed from “play or mute” to “source or rec” (specifically, changed from “play” to “rec”) The internal bus SEL (N) used in the output track N is another output track. If it is not used in all other output tracks J, the bus select switch i (M, SEL (N)) related to the internal bus is turned off, and SEL (N) is turned off at the same time. Then, the internal bus SEL (N) may be opened (reusable).
[0100]
Further, in this embodiment, when the user presses and pushes down the input channel M designation operator alone (that is, when an event of “input channel M = on” is received), G (M) The input channel gain was changed (function switching), but this function switching could be anything related to the input channel. If the mixer is equipped with an effector or equalizer for each input channel, each input The function of the effector or equalizer for each channel may be switched.
[0101]
【The invention's effect】
Since the present invention is configured as described above, the number of signal transmission paths is smaller than the number of output channels, and the connection between the signal transmission paths and the output channels can be freely performed. In addition to improving the degree of freedom in selecting the audio signal transmission path in the mixer, the unused signal transmission path in the mixer is automatically selected to limit the degree of freedom in selecting the signal transmission path. In addition, there is an excellent effect that the operability in selecting a signal transmission path can be improved.
[Brief description of the drawings]
FIG. 1 is a circuit configuration diagram showing an example of a conventional mixer.
FIG. 2 is a circuit configuration diagram showing another example of a conventional mixer.
FIG. 3 is a block diagram showing the overall configuration of a musical sound signal recording apparatus provided with an example of an embodiment of a mixer according to the present invention.
FIG. 4 is a circuit configuration diagram of a mixer unit.
FIG. 5 is an explanatory diagram of a schematic configuration of an operation panel.
FIG. 6 is a flowchart of a main routine.
FIG. 7 is a flowchart of processing for scanning operation states of a track 1 designation operator to a track 8 designation operator.
FIG. 8 is a flowchart of a process for scanning a track N.
FIG. 9 is a flowchart of a process for performing a two-key press scan.
FIG. 10 is a flowchart of selection processing.
FIG. 11 is a flowchart of a clear process.
FIG. 12 is a flowchart of cyclic change processing;
FIG. 13 is a flowchart of an internal bus selection process.
FIG. 14 is a flowchart of processing for scanning operation states of an input channel 1 designation operator to an input channel 8 designation operator.
FIG. 15 is a flowchart of processing for scanning an input channel M;
[Explanation of symbols]
10 Central processing unit (CPU)
11 Bus
12 Read-only memory (ROM)
14 Random access memory (RAM)
16 Mixer section
18 Recorder section
20 Operation panel

Claims (2)

Audio signal input means comprising a plurality of input channels for inputting audio signals;
Input channel designating means for designating an arbitrary input channel among the plurality of input channels;
Audio signal output means having a plurality of output channels for outputting audio signals;
Output channel designating means for designating an arbitrary output channel among the plurality of output channels;
Fewer signal transmission paths than the output channels connecting the plurality of input channels and the plurality of output channels;
Input connection means capable of connecting the input channel designated by the input channel designation means to one or a plurality of signal transmission paths;
Output connection means capable of connecting the output channel designated by the output channel designation means to any one signal transmission path;
Unused transmission path selection means for selecting an unused signal transmission path that is not connected to any of the plurality of output channels;
When any one output channel is designated by the output channel designating means and any one input channel is designated by the input channel designating means, the output channel is connected to any signal transmission path. In this case, the input connection means is controlled to connect the input channel to the signal transmission path, and when the output channel is not connected to any signal transmission path, the unused transmission path selection means A control means for controlling the output connection means to select the signal transmission path and connect the signal transmission path to the output channel and to control the input connection means to connect the signal transmission path to the input channel; A mixer characterized by. The mixer according to claim 1, wherein
An input channel specifying operator for specifying an arbitrary input channel among the plurality of input channels;
An output channel designating operator for designating an arbitrary output channel among the plurality of output channels;
With
Wherein, when any one of the output channels of the output channel which is connected to any signal transmission path is specified by the output channel operator, one of the said input channel designated operator A mixer characterized by controlling input connection means so as to alternately switch connection and non-connection of the input channel and the signal transmission path in accordance with designation of the input channel .

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