JP2007086365A - Illumination device and driving circuit for the same, and illumination method and illumination device driving method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To control a light emitting element which is provided for each band of a song in synchronization with the song without the need for programming beforehand. <P>SOLUTION: An illumination device comprises; a filter device in which a music signal is input as a signal to be processed and divided into the desired number of band channels for making a plurality of divided signals; a wave forming circuit for forming a simultaneous driving signal by level change of the divided signal, from the divided signal in the band channel of a lower frequency than a predetermined frequency in the divided signals; and a plurality of light emitting elements which are individually driven by an individual driving signal based on each divided signal and simultaneously driven by the simultaneous driving signal. In the band channel of a higher frequency than the predetermined frequency, the filter device outputs a signal in a state the Lch-signal and the Rch-signal of the music signal are separated, and the individual driving signal is formed from a subtracted signal in which the output Lch-signal and Rch-signal are subtracted. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an illumination device, a drive circuit thereof, an illumination method, and an illumination device drive method. The present invention relates to an illumination device driving method.

  Some types of amusement machines have an illumination device that applies sound (sound effect) or light according to the scene of the game (game) or its progress. Furthermore, not only sound effects but also music has been used in game machines. In other words, there are those that play music in relation to play, flash light intensity, or combine them to flash light intensity according to the music. FIG. 17 shows an example of an apparatus using such music and light. The device of FIG. 17 is a device that controls the sound and light of a game machine including a speaker 15 and a light emitting device (using a plurality of LEDs or the like) 17. This apparatus includes a microcomputer 11, and the microcomputer 11 controls a sound source 12 such as a ROM and an optical interface 16. That is, the sound source 12 stores at least one piece of music (music) as data. The characteristics of the song, for example, the repetition period of the low-pitched beat is analyzed in advance, and the light control device blinks on the basis of the analysis result, that is, the light control data for controlling the radiation state is stored in the microcomputer 11. Is stored. The music of the sound source 12 is started by the microcomputer 11 and the light control data is transmitted to the optical interface 16 in synchronization with the music. Thus, if attention is paid to the sound, the sound data is output as an analog signal from the sound source 12, and the sound is adjusted via a volume control circuit 13 that performs gain control manually or the like, and a power amplification circuit 14 that obtains power for driving the speaker. This is transmitted to the speaker 15. Thereby, music flows from the speaker. At the same time, a light control signal from the optical interface 16 is transmitted to the light emitting device 17, and for example, a plurality of LEDs and the like of the light emitting device 17 blink, and the intensity of light is controlled. Thus, the light operation of the light emitting device 17 is synchronized with the sound emitted from the speaker 15 and, for example, the beat of music.

  According to the apparatus shown in FIG. 17 described above, various kinds of game machines can perform light flashing intensity in relation to music (songs) to some extent. It is necessary to be able to operate the light emitting device in synchronization with the beat. However, it is extremely troublesome and time-consuming to perform such an analysis in advance for each song. For example, if you want to blink light and dark according to the beat of music, you have to program the point where all the beat parts of the song are timed and the light blinks and darkens in relation to that time. Then, the program data is started in synchronization with the start of the music. However, it is difficult to control the light according to the true state of music. For example, assuming that a song with a tempo of 100 at a pace of 4 minutes is 4 minutes, 400 time points are measured and programmed into the microcomputer. When this increases to 100 songs or the like, it becomes 40,000 places, the time required for the program becomes enormous, and the amount of data becomes enormous, which is practically difficult to realize. Also, even if you want to use a new song that has not been analyzed, you cannot immediately use it for a game machine as described above. Thus, taking time to prepare is to avoid as much as possible in game machines that are fashionable and must be installed and used quickly.

  The present invention has been made in view of these points, and an object of the present invention is to provide a game machine that can control a light emitting device in synchronization with the music without the need for a program in advance.

The illumination device of the present invention comprises:
A filter device that inputs a music signal as a signal to be processed and divides the signal into a desired number of band channels into a plurality of divided signals;
A waveform forming circuit that forms a simultaneous drive signal from a change in level of the divided signal from the divided signal in a band channel having a frequency lower than a predetermined frequency of the divided signals;
A plurality of light emitting elements that are individually driven by the individual drive signals based on the respective divided signals and are simultaneously driven by the simultaneous drive signals;
With
In the band channel having a frequency higher than a predetermined frequency, the filter device outputs the music signal with the Lch signal and the Rch signal separated from each other, and subtracts the output Lch signal and the Rch signal from the subtracted signal. An individual drive signal is formed,
It is comprised as what is characterized by this.

Furthermore, the drive circuit for the illumination device of the present invention includes:
A filter device for inputting a music signal as a signal to be processed, dividing it into a desired number of band channels, and forming individual drive signals for individually driving a plurality of light emitting elements;
A waveform forming circuit for forming a simultaneous drive signal for simultaneously driving the plurality of light emitting elements from the divided signal in a band channel having a frequency lower than a predetermined frequency among the divided signals, based on a level change of the divided signal. When,
With
In the band channel having a frequency higher than a predetermined frequency, the filter device outputs the music signal with the Lch signal and the Rch signal separated from each other, and subtracts the output Lch signal and the Rch signal from the subtracted signal. An individual drive signal is formed,
It is comprised as what is characterized by this.

The illumination method of the present invention comprises:
The filter device inputs a music signal as a signal to be processed, and divides it into a desired number of band channels to form a plurality of divided signals.
By the waveform forming circuit, a simultaneous drive signal is formed from a level change of the divided signal from the divided signal in a band channel having a frequency lower than a predetermined frequency of the divided signals,
A plurality of light emitting elements are individually driven by an individual drive signal based on each of the divided signals and simultaneously driven by the simultaneous drive signal.
An illumination method,
In the band channel of a frequency higher than a predetermined frequency by the filter device, the music signal is output in a state where the Lch signal and the Rch signal are separated, and the subtracted signal obtained by subtracting the output Lch signal and the Rch signal from the subtracted signal. Individual drive signals form,
It is structured as a thing.

The illumination device driving method of the present invention includes:
The filter device receives a music signal as a signal to be processed, divides the signal into a desired number of band channels, and forms individual drive signals for individually driving a plurality of light emitting elements,
The waveform forming circuit generates a simultaneous drive signal for simultaneously driving the plurality of light emitting elements from the divided signal in a band channel having a frequency lower than a predetermined frequency of the divided signals, based on a level change of the divided signals. Form,
An illumination device driving method comprising:
In the band channel having a frequency higher than a predetermined frequency, the filter device outputs the music signal with the Lch signal and the Rch signal separated from each other, and subtracts the output Lch signal and the Rch signal from the subtracted signal. Individual drive signals form,
It is structured as a thing.

  According to the present invention, since the low frequency component is extracted from the music frequency components constituting the music to be reproduced and the light emitting device is controlled, it is not programmed in advance in relation to the music (music). However, it is possible to automatically control the light emitting device in relation to the music from the reproduction of the music, and therefore, it is possible to deal with a sound source such as a CD, MD, and cable broadcasting. Furthermore, according to the present invention, music can be divided into several frequency bands, and individual light emitting elements can be reliably operated in all the bands for each frequency band.

  Prior to the description of the embodiments of the present invention with reference to the drawings, the essence of the present invention including the principle of the present invention will be described.

  The inventor of the present invention, for example, paid attention to the beat in the rhythm among the melody that plays a musical scale and the rhythm that engraves the beat in a speaker in a gaming machine, karaoke, audio equipment, or the like. In other words, it has been uniquely learned that musical instruments for chopping beats are mostly drums or basses, and the electric signals of the sound from them are 150 Hz or less. The present invention has been made on the basis of this unique knowledge. The beat is automatically analyzed and acquired during music playback, and the light emitting device is controlled by the acquired signal. It is a thing.

  Furthermore, when the above control is performed, there are few bass components in the music, and even if the above analysis is performed, the bass component is not sufficiently detected. Some strengths were not visually effective. In other words, in such a state, in the case of music whose bass component is not sufficient, it can be expressed in a preset color or with a color change by a program using a microcomputer or the like. Originally it was not directly related to music.

  The present inventor conducted further experiments to divide the reproduced sound into a plurality of frequency bands (for example, three sound ranges of low, medium, and high sounds), and flash different color light emitters for each sound range. And came up with the idea of controlling the strength. Thereby, even when the bass is not sufficient as described above, the visual effect can be enhanced as compared with the case where the light emitting element is controlled only by the bass component.

  According to the results of experiments with various actual sound sources by the present inventor, the following has been independently known. In other words, when the sound is divided into three ranges, high, medium and low, the level of the low midrange (near 100 to 300 Hz) is high, and the electrical signal in the high range (2800 Hz to 20000 Hz) closer to the high tone is also 1 / The inventor of the present invention independently knew that it had dropped to about 3. For this reason, it has been found that the above-described control of the light emitting element based on high sounds is not sufficiently performed as it is. In order to avoid this, that is, to compensate for this decrease, the filtered high-frequency electric signal may be amplified. However, it has been found that if the signal is simply amplified, it will inevitably appear in the output even in the middle of the sound signal adjacent to the lower side of the characteristic curve, which is at the base of the characteristic curve. This diminishes the significance of splitting the reproduced sound into several sound ranges and blinking and strengthening the light emitters of different colors in the signals for each sound range.

  For this reason, the present inventor further conducted various experiments. For example, by observing the waveform of an electric signal of music from a CD or the like, it was found that the treble is out of phase with Lch and RcH. And, from this, the present inventor, in the high frequency range signal, filtering the signal into LcH and RcH, subtracting the difference between each other, without removing the original high frequency range component, We have reached the original knowledge that signal processing that removes only the mixed midrange components is possible. The present invention has been made based on the technical knowledge and understanding unique to the present inventor. In the present invention, a high-frequency signal obtained by such signal processing is used. For this reason, according to the apparatus of the present invention, the reproduced sound from the speaker can be more effectively matched with the visual illumination from the high sound range to the low sound range.

  Hereinafter, an embodiment of the present invention will be described with reference to FIG.

  The apparatus according to the embodiment of the present invention inputs a stereo signal as a music signal from various sound sources, that is, an Lch signal LS and an Rch signal RS independently of each other, and divides it into three-channel signals of low, medium and high in the frequency band. The three color (RGB) color LEDs 7A-7C corresponding to the signals of the respective channels can be controlled to blink according to the music and to control the lighting state. As described above, these LEDs 7A-7C are used in relation to a speaker in, for example, a gaming machine, karaoke, audio equipment, or the like.

  More specifically along FIG. 1, the signal of each channel is obtained from the detection circuit 4A-4C and becomes an individual drive signal, and individually drives the LEDs 8A-8C of the colors corresponding to the channels 4A-4C. At the same time, the waveform forming circuit 5 captures the level change (rise) of the signal from the detection circuit 4C in the low-frequency channel to form a pulse signal (simultaneous drive signal), and the LEDs 8A-8C are simultaneously formed by this simultaneous drive signal. To drive. In the embodiment of the present invention, the LEDs 8A-8C corresponding to the respective channels are individually driven by the signals of the respective channels and simultaneously driven by the signals of the low frequency channel.

  This will be described in more detail.

  The apparatus of FIG. 1 includes Lch and Rch amplifier circuits 1A and 1B for level adjustment. The Lch signals LS and RchRS signals shown in FIGS. 2 and 3 are applied to the input nodes 1a and 1b of these amplifier circuits 1A and 1B. These Lch signal LS and Rch signal RS are artificial signals obtained by synthesizing signals of 100, 1K, and 10 KHz as low, middle, and high three sound range signals in order to describe the present apparatus. Although it is difficult to understand from FIGS. 2 and 3, the signal is in-phase in the L and R channels in the low and mid range, and the signal in the high range is out of phase in the L and R channels. Outputs of the amplifier circuits 1A and 1B are obtained at nodes 2a and 2b, and are shown in FIGS. As can be seen from FIGS. 4 and 5, in this embodiment, the signals of FIGS. 2 and 3 are amplified 10 times. This output waveform is similar to the input waveform. The signals of these nodes 2a and 2b are applied to the next stage filter 2A-2D. These filters include high-pass filters 2A and 2B, a band-pass filter 2C, and a low-pass filter 2D. The bandwidth of these filters is shown for example in FIG. Using such a filter, first, when looking at the high sound range side, the signals of the nodes 2a and 2b are applied to the Lch and Rch high pass filters 2A and 2B, respectively. Outputs from these high-pass filters 2A and 2B appear at nodes 3a and 3b, and their waveforms are as shown in FIGS. 7 and 8 in this embodiment in which the waveforms of FIGS. 4 and 5 are input. . Naturally, the output waveforms in FIGS. 7 and 8 change according to the input waveforms in FIGS.

  The signals at the nodes 3a and 3b are applied to the differential circuit 3 at the next stage. The differential circuit 3 is a circuit for obtaining a differential output, that is, a subtracted output of the nodes 3a and 3b, and its output is shown in FIG. In other words, in the high-frequency signal applied to the differential circuit 3, the Lch and Rch signals are output without being canceled by subtraction because they are out of phase with each other, but the mid-range leakage signal is the same. Since it is a phase signal, it is canceled by subtraction and is not output. As a result, the signal of the node 4a is only the original high-frequency signal. The signal at this node 4a is applied to the detection circuit 4a at the next stage, and obtained as an output signal shown in FIG. 10 at the node 5a. The output signal at this node 5a is applied to the lighting circuit 6A at the next stage, as will be described in detail later.

  On the other hand, the signals of the nodes 2a and 2b are both added to the bandpass filter 2C in the middle sound range. In the midrange, the L and R channel signals LS and RS are in phase with each other, and the signal shown in FIG. 11 is obtained at the node 3c based on the combined signal of the two signals at the nodes 2a and 2b. The signal at the node 3c is applied to the detection circuit 4B at the next stage and detected, and the output shown in FIG. 12 is obtained at the node 4b. The output signal of the node 4b is applied to the lighting circuit 6B at the next stage, as will be described in detail later.

  In addition, the signals of the nodes 2a and 2b are also added to the bandpass filter 2D as the low sound range, similarly to the middle sound range. Even in the low sound range, the signals LS and RS of the L and R channels are in phase with each other, and the signal shown in FIG. 13 is obtained at the node 3d based on the combined signal of the two signals at the nodes 2a and 2b. The signal at the node 3d is applied to the detection circuit 4C at the next stage and detected, and the output shown in FIG. 14 is obtained at the node 4c. The output signal of the node 4c is applied to the lighting circuit 6C at the next stage, as will be described in detail later.

  Furthermore, the output of the detection circuit 4C is applied to the waveform forming circuit 5. The waveform forming circuit 5 is for analyzing and extracting an electric signal of a low frequency sound from a so-called beat-cutting instrument or the like as described above. In other words, it can be said that the circuit generates electrical vibration by using the rising of the bass. The waveform forming circuit 5 includes a first circuit 5A and a second circuit 5B connected in parallel to the node 4c, and a third circuit 5C for obtaining a differential output of these outputs. That is, the first and second circuits 5A and 5B are charge / discharge circuits composed of RC and the like, and the first and second circuits 5A and 5B can obtain the output waveforms of FIGS. 15A and 15B. This is a circuit configured as described above. That is, the first circuit 5A is configured as a circuit that receives the output from the detection circuit 4C at time t1, maintains it until time t2, and then reduces the voltage by discharging. The second circuit 5B is configured as a circuit that increases the voltage by receiving the output from the detection circuit 4C at time t1 and charging it until time t2, and then lowers the voltage by discharging. The outputs of the first and second circuits 5A and 5B are applied to the next-stage pulse output circuit 5C. This pulse output circuit 5C is based on the outputs of the first and second circuits 5A and 5B, that is, when the output of the first circuit 5A is high, by the rise of the output from the second circuit 5B, as shown in FIG. As shown, the circuit is configured to output a pulse having a constant width. This output is output to the node 5d. This output is applied to the lighting circuits 6A-6C described above.

  That is, the above-described lighting circuits 6A-6C have amplifier circuits 6A1-6C1, respectively, and their output nodes 6a-6c are connected to the control terminals of the output transistors 7A-7C at the next stage. The collectors of these output transistors 7A-7C are connected to the cathodes of the BGR LEDs 8A-8C, respectively, and the anodes of these LEDs 8A-8C are connected to the high-voltage power supply. Note that the emitters of the output transistors 7A-7C are connected to a low-voltage power supply via a resistor. As a result, when signals in the high, mid, and low range are detected, the LEDs 8A-8C are lit with these signals, and the intensity of lighting corresponds to the magnitude of those signals. These LEDs 8A-8C are not shown in the figure, but can be attached at arbitrary positions with respect to speakers in a gaming machine, karaoke, audio equipment, and the like.

  At the same time, the output from the waveform forming circuit 5 is directly applied to the control terminals of the lighting circuits 6A-6C, that is, the output transistors 7A-7C. For this reason, when the output from the waveform forming circuit 5 is output regardless of the high, middle and low sound range signals from the detection circuit 4A-4C, the LEDs 8A-8C have their strength in accordance with the so-called beat. Will flash in response to.

  As described above, the total blinking state matches the magnitude of the electric signal from each detection circuit. Also, only the bass sounds are made white by flashing each color (red, green, blue) simultaneously through waveform formation that generates electrical vibrations using the rise of the bass. As a result, the high, medium, and low sounds of the music are flushed in accordance with the beat of the music with the flashing image, and the flashing and intensity control of the RGB LEDs that are appropriate for the viewer can be performed.

  In the above embodiment, the sound channel is divided into three bands. However, the number of sound channels is not limited to this number, and may be four or more. In addition, although three colors of RGB are used as LEDs and white light is emitted at the time of simultaneous lighting, the LEDs are not limited to this, and LEDs of any color can be used.

1 is an overall circuit diagram of an embodiment of the present invention. The signal waveform in the node 1a of FIG. The signal waveform in the node 1b of FIG. The signal waveform in the node 2a of FIG. Signal waveform at node 2b in FIG. Characteristic diagram of each filter in FIG. The signal waveform in the node 3a of FIG. The signal waveform in the node 3b of FIG. The signal waveform in the node 4a of FIG. The signal waveform in the node 5a of FIG. The signal waveform in the node 3c of FIG. The signal waveform in the node 4b of FIG. The signal waveform in the node 3d of FIG. The signal waveform in the node 4c of FIG. Signal waveforms at nodes 5b and 5c in FIG. Signal waveform at node 5d in FIG. The whole circuit diagram of a prior art example.

Explanation of symbols

LS Lch signal RS Rch signal 1A Lch amplifier circuit 1B Rch amplifier circuit 2A, 2B High pass filter 2C Band pass filter 2D Low pass filter 3 Differential circuit 4A-4C Detection circuit 5 Waveform forming circuit 6A-6C Lighting circuit 7A-7C Output transistor 8A -8C LED

Claims (4)

A filter device that inputs a music signal as a signal to be processed and divides the signal into a desired number of band channels into a plurality of divided signals;
A waveform forming circuit that forms a simultaneous drive signal from a change in level of the divided signal from the divided signal in a band channel having a frequency lower than a predetermined frequency of the divided signals;
A plurality of light emitting elements that are individually driven by the individual drive signals based on the respective divided signals and are simultaneously driven by the simultaneous drive signals;
With
In the band channel having a frequency higher than a predetermined frequency, the filter device outputs the music signal with the Lch signal and the Rch signal separated from each other, and subtracts the output Lch signal and the Rch signal from the subtracted signal. An individual drive signal is formed,
An illumination device characterized by that. A filter device for inputting a music signal as a signal to be processed, dividing it into a desired number of band channels, and forming individual drive signals for individually driving a plurality of light emitting elements;
A waveform forming circuit for forming a simultaneous drive signal for simultaneously driving the plurality of light emitting elements from the divided signal in a band channel having a frequency lower than a predetermined frequency among the divided signals, based on a level change of the divided signal. When,
With
In the band channel having a frequency higher than a predetermined frequency, the filter device outputs the music signal with the Lch signal and the Rch signal separated from each other, and subtracts the output Lch signal and the Rch signal from the subtracted signal. An individual drive signal is formed,
A drive circuit for an illumination device. The filter device inputs a music signal as a signal to be processed, and divides it into a desired number of band channels to form a plurality of divided signals.
By the waveform forming circuit, a simultaneous drive signal is formed from a level change of the divided signal from the divided signal in a band channel having a frequency lower than a predetermined frequency of the divided signals,
A plurality of light emitting elements are individually driven by an individual drive signal based on each of the divided signals and simultaneously driven by the simultaneous drive signal.
An illumination method,
In the band channel of a frequency higher than a predetermined frequency by the filter device, the music signal is output in a state where the Lch signal and the Rch signal are separated, and the subtracted signal obtained by subtracting the output Lch signal and the Rch signal from the subtracted signal. Individual drive signals form,
An illumination method characterized by that. The filter device receives a music signal as a signal to be processed, divides the signal into a desired number of band channels, and forms individual drive signals for individually driving a plurality of light emitting elements,
The waveform forming circuit generates a simultaneous drive signal for simultaneously driving the plurality of light emitting elements from the divided signal in a band channel having a frequency lower than a predetermined frequency of the divided signals, based on a level change of the divided signals. Form,
An illumination device driving method comprising:
In the band channel having a frequency higher than a predetermined frequency, the filter device outputs the music signal with the Lch signal and the Rch signal separated from each other, and subtracts the output Lch signal and the Rch signal from the subtracted signal. Individual drive signals form,
An illumination device driving method characterized by that.

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