JPH059916B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a device for controlling loads such as lighting lights on stages, studios, etc. in conjunction with sound.

Conventional technology Light control devices used in studios, stages, etc. use technology that changes the light control state in conjunction with or synchronization with the sound and voices generated on the stage, etc., and is a key element in production. It has become one of the

FIG. 5 is a block diagram showing an example of the configuration of a first conventional light control device 1 that performs light control in conjunction with sound. With reference to FIG. 5, the light control device 1
sets dimming data such as lighting level data and fade time in the memory 2 using the operating device 3, and the dimming data read from the memory 2 is sent to the dimmer 5 and the lighting load 6 via the multiplexer 4. A driving voltage is selectively supplied to a plurality of series.

In the light control device 1, an acoustic signal from a microphone 7 installed in a studio, for example, undergoes waveform shaping and amplification in a signal processing circuit 8, and then is output as sound from a speaker 9. A break signal generation circuit 10 is connected to the latter stage. In the memory 2, preset dimming data is read out in response to a critical signal from the critical signal generating circuit 10, and operations are performed in synchronization with sound.

FIG. 6 is a block diagram showing an example of the configuration of a second conventional light control device 11. The light control device 11 will be explained with reference to FIG. This conventional example is similar to the above-mentioned conventional example, and corresponding parts are given the same reference numerals. What is noteworthy about this conventional example is that the sound pressure or frequency of the input acoustic signal is divided into levels using a plurality of reference levels in the level division device 12, and as a result, a corresponding single level range is obtained. The corresponding storage area 12 in the memory 2 is designated, the storage contents are read out, and the storage dimming operation is performed.

Problems to be Solved by the Invention In the first conventional example, for example, when attempting to realize one of a plurality of types of dimming control states in response to the sound pressure of an acoustic signal,
In addition to the dimming level and fade time of each of the dimming control states, the scene switching timing must also be set in the memory 2 in advance. Therefore, it takes unnecessary effort to set such dimming data, and changing the dimming control state of the lighting load 6 using such a critical signal is due to the connection of the critical signal generating circuit 10. There is a problem in that the above-mentioned control is difficult for audio signals in processing paths other than the processing path for the acoustic signals that have been processed.

Furthermore, in the second conventional example, the effect of lighting effects as a change in the control state of the lighting load 6 corresponding to the sound pressure level is often relatively low; There is a problem that the response to change the dimming control state of No. 6 becomes excessively frequent.

The purpose of the present invention is to solve the above-mentioned technical problems,
It is an object of the present invention to provide a load control device that is linked to sound and has improved usability and is easy to operate.

Means for Solving the Problems The present invention includes a signal converting means for converting sound into a sound level signal, and a signal converting means that compares the sound level signal with one or more reference levels, and each time the sound level signal matches one of the reference levels. a comparison means for outputting level change amount pulses corresponding to the reference level; a counting means for counting the level change amount pulses; and one of the control means is selected and read out corresponding to each counting output of the counting means. This is a load control device linked to sound, characterized in that it includes a plurality of storage means in which the load is controlled based on state data.

Effect According to the present invention, sound is converted into a sound level signal by the signal conversion means. The sound level signal is compared with one or more reference levels by the comparison means, and every time the sound level signal matches any one reference level, a level change pulse corresponding to the reference level is output. The level change amount pulses are counted by the counting means, and one of the plurality of storage means is selected corresponding to each count output. The load is controlled based on the control status data read from the selected storage means. Here, as the frequency of acoustic changes increases, the frequency of generation of level change amount pulses increases, and the count value of the counting means increases rapidly.

Therefore, it is possible to realize load control that corresponds to the frequency of acoustic changes, and there is no need for operations such as setting changes in the load control state in advance as data that correspond to the frequency of such acoustic changes. is eliminated and operability is improved. Furthermore, since the load control state is changed in accordance with the frequency of acoustic changes, the quality of load control can be significantly improved.

Embodiment FIG. 1 is a block diagram showing the basic configuration of a light control device 21 which is a load control device linked to sound according to an embodiment of the present invention. Referring to FIG. 1, the sound generated on the stage, studio, etc. is input as an acoustic signal a to a sound pressure level comparison circuit 22, which is a comparison means, and a plurality of types of sound pressure change amount signals b1, b2, . . .
bn is output respectively. Sound pressure change amount signal b1
~bn are pulse generation circuits PG1 and PG realized by monostable multivibrators, etc.
2, .

The outputs from the pulse generation circuits PG1 to PGn are input to the OR circuit 23, the level change amount pulse c from the OR circuit 23 is input to the frequency division counter 24, and the count value e is output to the decoder 25. A plurality of memories M1, M2, . . . , Mn are connected to the decoder 25, and one of them is selected based on the count value e. In addition, the reset pulse generation circuit 26
is provided, and the generated reset pulse d is periodically input to the frequency division counter 24 at predetermined timing. Also, the reset pulse d is sent to the decoder 2.
5 as a preset signal.

FIG. 2 is a block diagram showing an example of the configuration of the light control device 21. As shown in FIG. The light control device 21 will be explained with reference to FIG. The light control device 21 includes a plurality of lighting loads 27 as loads, and a plurality of dimmers that control the lighting loads 27 to which a predetermined number of lighting loads 27 are respectively connected to the same lighting level by, for example, phase angle control. 28. Illumination level data for each dimmer 28 is output to each dimmer 28 via a selector 29.

The light control device 21 includes a control device 31 including a storage section 30 that stores light control level data regarding the lighting load 27 and the like. The storage unit 30 includes a memory M that stores control data such as lighting level data and fade time for each predetermined time range of the lighting load 27, for example, in mutually different states.
1, M2, ..., Mn are set. Data from an operation section 32 including, for example, a preset fader and a numeric keypad is input to these memories M1 to Mn.

A sound source 33 such as a microphone or a tape recorder is connected to the control device 31, and the sound signal a is input from this sound source 33. The sound pressure level comparison circuit 22 includes, for example, n comparators.
CP1, CP2,..., CPn, the acoustic signal a is commonly input to one input terminal of these, and the reference voltage Vrf1, Vrf2,..., is input to each other input terminal, respectively.
Vrfn (Vrf1<Vrf2<...<Vrfn) is connected.

FIG. 3 is a time chart explaining the operation of this embodiment. The operation of this embodiment will be explained with reference to FIG. The acoustic signal a from the acoustic source 33 is generated as shown in FIG. 3, and the reference levels Vrf1, Vrf2,
..., Vrfn are set as shown in FIG. 3. Each comparator CP1, CP2,
..., sound pressure change amount signal b1 which is output from CPn,
b2, . . . , bn are output as shown in FIGS. 32 to 4.

The pulse width of the sound pressure change amount signals b1 to bn is generated over a period in which the level of the acoustic signal a exceeds each reference level Vrf1 to Vrfn, respectively.
Its length is indefinite. Such sound pressure change amount signals b1 to bn are input to pulse generation circuits PG1 to PGn, which output signals with short pulse widths at the rising timing of each pulse of the sound pressure change amount signals B1 to Bn. The outputs of these pulse generating circuits PG1 to PGn are logically summed in an OR circuit 23, and a calculation signal c as shown in FIG. 3 is output.

The frequency division counter 24 performs a counting operation every time the calculation signal c is input within the input cycle W1 of the reset pulse d from the reset pulse generation circuit 26. The count value e shown in FIG. 3 of the frequency division counter 24 is input to the line decoder 25. The line decoder 25 selects one of the memories M1 to MN at the address corresponding to the count value e.
As a result, the data Di from the selected memory Mi (i=1 to N) is transmitted to each dimmer 2 via the selector 29.
8 to realize desired dimming control.

At this time, a reset pulse d is periodically supplied to the frequency division counter 24 and the line decoder 25, and the count value of the frequency division counter 24 is, for example, 0.
The line decoder 25 is set to select a predetermined memory M1, for example. The higher the frequency of changes in the acoustic signal a, the higher the density of the number of pulses per unit time of the calculation signal c from the OR circuit 23. Therefore, the count value of the frequency division counter 23 increases, and an appropriate one of the memories M1 to MN storing dimming data corresponding to the frequency of changes in the acoustic signal can be selected. . Therefore, the scene to be realized by the lighting load 27 is appropriately selected, and for example, the more the acoustic signal a changes, the more the lighting load 27 changes in brightness. It can be realized.

Since such control is performed in accordance with the degree of change in the acoustic signal a, it is no longer necessary to preset the control to perform selection frequency of the memories M1 to MN in accordance with the frequency of change in the acoustic signal a. This greatly improves operability. Further, since dimming control corresponding to the control state of the acoustic signal a is realized, the quality of such dimming control is improved.

FIG. 4 shows a light control device 21a according to another embodiment of the present invention.
FIG. 2 is a block diagram showing an example of the configuration. This embodiment will be described with reference to FIG. This embodiment is similar to the previous embodiment, and corresponding parts are given the same reference numerals. The noteworthy point of this embodiment is the storage section 3.
The memory areas MA1 to MAN are set as 0.
Further, while the count value e was parallel data consisting of a plurality of bits in the previous embodiment, in this embodiment it is constructed as a time series of a plurality of pulses. In the storage unit 30, each time a pulse is input from the frequency division counter 24, the selection target changes from memory area MAi to memory area MAi+1 (i=1
~N). Even with such a configuration example, the same effects as those described in the above-mentioned embodiments can be achieved.

In each of the embodiments described above, one of the memory areas M1 to MN is selected in accordance with the frequency of changes in the acoustic signal a, but the number of operations for selecting one of the memory areas M1 to MN is It may be made to correspond to the frequency of changes in the acoustic signal a.

In each of the embodiments described above, the present invention has been described as a light control device that controls a lighting load, but the embodiments of the present invention are not limited thereto.

Effects of the Invention As described above, according to the present invention, level change amount pulses are counted by the counting means, and one of the plurality of storage means is selected corresponding to each count output. The load is controlled based on the control state data read from the selected storage means. Here, as the frequency of acoustic changes increases, the frequency of generation of level change amount pulses increases, and the count value of the counting means increases rapidly.

Therefore, load control corresponding to the frequency of acoustic changes can be realized, and operations such as setting changes in the load control state corresponding to the frequency of acoustic changes as data in advance can be set. situations can be prevented and operability improved. Furthermore, since the load control state is changed in accordance with the frequency of acoustic changes, the quality of load control can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of a light control device 21 according to an embodiment of the present invention, and FIG.
3 is a time diagram explaining the operation of this embodiment, and FIG. 4 is a block diagram illustrating an example of the structure of the light control device 21a according to the second embodiment of the present invention. , FIG. 5 is a block diagram of a typical first conventional example of a light control device 1, and FIG. 6 is a block diagram of a second conventional example of a light control device 11. 21, 21a... Dimmer, 22... Sound pressure level comparison circuit, 23... OR circuit, 24... Frequency division counter, 25... Decoder, 27... Lighting load,
30...Storage unit, 33...Sound source.

Claims (1)

[Claims] 1. Signal converting means for converting sound into a sound level signal; Comparing the sound level signal with one or more reference levels, and converting the sound level signal to the reference level each time the sound level signal matches one of the reference levels. a comparison means for outputting level change pulses corresponding to the level change pulses; a counting means for counting the level change pulses; one of which is selected corresponding to each counting output of the counting means and based on the read control status data. 1. A load control device linked to sound, comprising: a plurality of storage means in which a load is controlled by a plurality of storage means;