JP2005334500A - Game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To produce comfortable game environment by outputting opposite-phase sound for appropriately reducing only noise without reducing performance sounds. <P>SOLUTION: The noise generated inside or around a pachinko game machine 1 is input by a microphone 21 (S2). If sound pressure of the inputted noise is 90 dB or greater (S4: YES), based on the performance sound and electrical signals of the noise, in which a frequency band matching the noise is cut (S9), the opposite-phase sound having a phase opposite to the noise is produced (S10) so as to output from a speaker 13. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a gaming machine that reduces ambient noise by outputting an antiphase sound, and in particular, a frequency that matches an electrical signal of a production sound from an electrical signal of an unnecessary sound generated inside or around the gaming machine. The present invention relates to a pachinko machine or the like that can reduce only unnecessary sound without disturbing output of necessary sound such as performance sound by outputting the opposite phase sound of the electrical signal of the unnecessary sound that has been deleted and deleted. .

In game stores where pachinko machines, which are one of the gaming machines, are installed, a large amount of pachinko balls are circulated, so a large noise is generated due to the pachinko balls moving by rolling or falling along the circulation path. To do. In addition, collision sounds generated when pachinko balls rolling in the game area of the game board collide with the front glass window and game nails of the game board, and production sounds generated by other game machines installed around There is also a sound effect and the like, and the concentration of the player during the game is disturbed, and there is a possibility that the player cannot concentrate on the game.
Therefore, for example, Japanese Patent Application Laid-Open No. 2003-190374 discloses a microphone that converts unnecessary sound generated in or around a gaming machine or mechanical vibration that causes the sound into an electrical signal and outputs the signal, and an output signal from the microphone. And a sub CPU that generates a signal having an opposite phase, and a speaker that converts the opposite phase signal generated thereby to a sound and outputs the sound so as to cancel each other out with an unnecessary sound. A gaming machine is described in which the sound effect generated by the operation of the game is not impaired and the effect of the original game sound is not impaired, and the acoustic effect is enhanced to enhance the interest of the game.
JP 2003-190374 A (pages 3 to 6, FIGS. 6 and 7)

  However, in the gaming machine described in Patent Document 1 described above, an anti-phase sound having an opposite phase to the unwanted sound such as noise input from the microphone is output as it is, so that the effects used for various effects of the gaming machine When the frequencies of the sound and the unnecessary sound are the same, there is a possibility that an effect sound that is originally beneficial to the player may be canceled by outputting an antiphase sound. Therefore, there is a possibility that the originally planned production effect cannot be fully exhibited and the game becomes monotonous.

  Therefore, the present invention has been made to solve the above-described problems, and by analyzing the frequency of the production sound used for the production of the game and outputting the antiphase sound of the noise excluding the same frequency. A game that can reduce the noise unnecessary for the player and can produce a game environment that is comfortable for the player because it can produce a sufficient effect without canceling the production sound useful for the player. The purpose is to provide a machine.

  In order to achieve the above object, a gaming machine according to claim 1 includes an input unit that converts an unnecessary sound generated in or around the gaming machine into an electric signal and inputs the electric signal, and an electric of the unnecessary sound that is input by the input unit. A first frequency analyzing means for analyzing the frequency of the signal; a second frequency analyzing means for analyzing the frequency of an electrical signal of a performance sound that is emitted around the gaming machine and produces a game; and the first frequency analyzing means. The frequency of the electrical signal of the unwanted sound and the frequency of the electrical signal of the rendered sound analyzed by the second frequency analyzing means are compared with the frequency of the electrical signal of the unwanted sound and the frequency of the electrical signal of the rendered sound. Frequency comparison means for determining whether or not there is a coincidence frequency that coincides with the frequency of the electric signal of the unnecessary sound and the frequency of the electric signal of the effect sound by the frequency comparison means. When it is determined that there is a coincidence frequency with the number, the coincidence frequency is erased by the first frequency erasing means for erasing the frequency of the coincidence frequency from the frequency of the electrical signal of the unnecessary sound, and the first frequency erasing means. First anti-phase signal generating means for generating an electric signal having a reverse phase of the generated electric signal of the unnecessary sound, and a first phase for outputting the electric signal having the anti-phase generated by the first anti-phase generating means as an anti-phase sound. And anti-phase sound output means.

  A gaming machine according to claim 2 is the gaming machine according to claim 1, further comprising sound pressure measuring means for measuring a sound pressure of the unnecessary sound, and a sound pressure equal to or higher than a predetermined value by the sound pressure measuring means. When the value is measured, an antiphase sound is output by the first antiphase sound output means.

  According to a third aspect of the present invention, there is provided a gaming machine that converts an unnecessary sound generated inside or around the gaming machine into an electric signal and inputs the electric signal, and a frequency of the electric signal of the unnecessary sound input by the input means. A first frequency analyzing means for analyzing, a second frequency analyzing means for analyzing the frequency of an electrical signal of an effect sound that is emitted around the gaming machine and produces a game, and the unnecessary analyzed by the first frequency analyzing means The frequency of the electrical signal of the sound is compared with the frequency of the electrical signal of the effect sound analyzed by the second frequency analysis means, and the frequency of the electrical signal of the unnecessary sound matches the frequency of the electrical signal of the effect sound A frequency comparison means for determining whether or not there is a coincidence frequency; and a coincidence frequency between the frequency of the electrical signal of the unnecessary sound and the frequency of the electrical signal of the effect sound by the frequency comparison means. A second frequency erasing unit that erases the frequency of the coincidence frequency from the frequency of the electrical signal of the effect sound, and the effect sound of which the coincidence frequency is erased by the second frequency erasing unit. Phase changing means for changing the phase of the electrical signal, effect sound output means for outputting the electrical signal of the effect sound whose phase has been changed by the phase sound changing means as the effect sound, and an opposite phase of the electrical signal of the unnecessary sound A second antiphase sound output unit that outputs an electric signal having a phase opposite to the electric signal of the unnecessary sound generated by the second antiphase signal generating unit; And means.

  Furthermore, the gaming machine according to claim 4 is the gaming machine according to claim 3, further comprising sound pressure measuring means for measuring a sound pressure of the unnecessary sound, wherein the sound pressure measuring means is configured to have a sound pressure equal to or higher than a predetermined value. In the case of measuring, an antiphase sound is output by the second antiphase sound output means.

  In the gaming machine according to claim 1, in the case where there is a matching frequency between the unnecessary sound generated inside or around the gaming machine and the frequency of the effect sound for effecting the game, the matching frequency is determined from the unnecessary sound. Since the inverted sound having the electrical signal with the opposite phase to the erased unnecessary sound electrical signal is output, an inverted phase sound having a frequency different from the production sound can be output, which is unnecessary for the player. The production sound and the like that reduce the sound and are beneficial to the player are not canceled by the antiphase sound. Therefore, it is possible to create a comfortable gaming environment in which the player is not disturbed by the unnecessary sounds such as noises and can sufficiently exhibit the effect.

  Further, in the gaming machine according to claim 2, when the unnecessary sound is not a sound pressure equal to or higher than the predetermined value, the anti-phase sound is not output. Stop and improve performance.

  In addition, in the gaming machine according to claim 3, when there is a matching frequency between the unnecessary sound generated inside or around the gaming machine and the frequency of the effect sound for effecting the game, the game sound matches the effect sound. Since the frequency is erased and the phase is changed and output, an anti-phase sound having a frequency different from the production sound can be output, unnecessary sounds unnecessary for the player can be reduced, and for the player Beneficial production sound or the like is not canceled by the antiphase sound. Furthermore, by changing the phase, it is possible to generate a smooth sound even if the effect sound has the frequency deleted. Therefore, it is possible to create a comfortable gaming environment in which the player is not disturbed by the unnecessary sounds such as noises and can sufficiently exhibit the effect.

  Further, in the gaming machine according to claim 4, when the unnecessary sound is not a sound pressure higher than the predetermined value, the anti-phase sound is not output. Stop and improve performance.

  Hereinafter, a first embodiment and a second embodiment in which a gaming machine according to the present invention is embodied for a pachinko machine will be described in detail with reference to the drawings.

(First embodiment)
First, a schematic configuration of the pachinko machine according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a front view showing the entire pachinko machine according to the first embodiment, and FIG. 2 is a rear view showing the pachinko machine according to the first embodiment.

  As shown in FIGS. 1 and 2, the pachinko machine 1 according to the first embodiment is a so-called first type pachinko machine that pays out a predetermined amount of pachinko balls as a prize ball, and is generally a CR machine (card reading machine). The card-type ball lending machine and the pachinko machine 1 are configured as a pair, but the card-type ball lending machine is not shown in FIGS. 1 and 3. The pachinko machine 1 has a synthetic resin inner frame 3 attached to a wooden outer frame 2 so as to be openable and closable with respect to the outer frame 2 via an upper hinge 4 and a lower hinge 5 constituting a hinge for attaching a front frame. It has been. A front cover member 6 made of synthetic resin is attached to the front side of the upper half of the middle frame 3 so that it can be opened and closed by being pivotally supported at the upper and lower sides of the left end edge. Further, a substantially circular window portion 7 is opened at the substantially central portion of the front cover member 6, and the upper surface of the game board is passed through two glasses mounted on a glass holding frame formed on the outer peripheral edge portion of the window portion 7. The game area (not shown) can be seen. In addition, a full-color light emitting diode is incorporated at the upper edge of the window 7 of the front cover member 6 and an error display illumination lamp 10A for displaying an error during the game is attached. Further, on the left and right outer sides of the error display illumination lamp 10A, each illumination lamp 10B for notifying the occurrence of “winning” or the like or performing a light effect during the game is attached. Further, the front surface portion of the front cover member 6 is covered with an opaque synthetic resin front member 6A, and is not shown between the electric lamps 10A and 10B and the upper peripheral edge of the window portion 7. Full color diodes are built in the left and right direction, and light effects are performed during the game.

  Further, a key insertion part 11 for operating a locking device (not shown) for locking the middle frame 3 and the front cover member 6 is provided at the right center part of the front cover member 6. In order to open the front cover member 6, if a predetermined key is inserted into the key insertion portion 11 and rotated in a predetermined direction, the lock state of the locking device is released and only the front cover member 6 is opened.

  Further, below the front cover member 6, an upper plate 12 that receives a prize ball to be paid out via a prize ball payout device is provided on a synthetic resin plate 14 with a built-in speaker 13. The synthetic resin plate 14 is pivotally supported at the upper and lower ends of the left edge, and is attached so that it can be opened by lowering a lever (not shown) provided inside after opening the front cover member 6. . Further, operation buttons 15 and 16 and a card balance display device 17 of a card type ball lending machine are provided on the central front surface portion of the upper plate 12. A lower plate 9 is disposed under the upper plate 12. Further, the pachinko ball of the upper plate 12 is sent to the launching device 20 connected to the operation handle 19 via a ball feeding mechanism (not shown) communicating with the upper plate 12.

  Further, a microphone 21 is provided at the right end of the synthetic resin plate 14. The microphone 21 inputs noise generated inside or around the gaming machine, converts it into an electrical signal, and transmits it to a sound pressure analyzer 75 (see FIG. 3) described later. Here, the noise refers to the rolling and falling sounds of a large number of pachinko balls that circulate in the game store, the pachinko balls that roll in the game area of the game board and the game nails provided on the game board. There are a collision sound generated by a collision, a production sound and a sound effect emitted from other gaming machines installed in the vicinity. The microphone 21 will be described in detail later.

Next, the configuration of the back side of the pachinko machine 1 will be described based on FIG.
As shown in FIG. 2, a metal mechanism board 55 such as an iron plate is attached to the middle part of the middle frame 3 so that the game board can be attached and detached. A mechanism set board 56 made of synthetic resin is attached to the back side of the mechanism board 55 with a hinge so as to be freely opened and closed.
In addition, a prize ball tank 57 that opens upward is fixed to the mechanism set board 56 at the upper rear portion of the back side of the pachinko machine 1. The prize ball tank 57 has a communication hole 58 formed on an inclined bottom surface, and a tank rail that forms a passage through which the pachinko balls are aligned and flowed out in a line below the communication hole 58 to send the pachinko balls to the prize ball case 59. 60 is attached.

In addition, in the prize ball guiding portion 61 that guides the pachinko balls to the prize ball case 59, a row of prize ball passages for sending the pachinko balls on the downstream side of the tank rail 60 is formed.
The prize ball case 59 is provided with a ball detection switch for confirming a pachinko ball passing through the prize ball passage in the prize ball guide 61 and a payout solenoid for adjusting the payout of the pachinko ball. The prize ball tank 57, the tank rail 60, the prize ball guide section 61, the prize ball case 59, and the like constitute a prize ball and rental payout system.
A discharge portion is formed on the downstream side of the prize ball case 59. A prize ball discharge passage 62 for discharging a prize ball and a lower tray discharge path 63 having a lower tray overflow switch (not shown) are provided below the lower end portion. Is formed. A lower tray box 64 that receives prize balls overflowing from the upper plate 12 and guides them to the lower plate 18 through the lower plate discharge path 63 is attached to the back side of the middle frame 3.

  A synthetic resin center cover 65 that covers a liquid crystal display (LCD) or the like is attached to the lower side of the tank rail 60. Inside the back surface of the center cover 65, a display control board 66 for driving and controlling the LCD and the like, a sound control board 67 for driving and controlling the speaker 13 and the like, and generating anti-phase sound to reduce ambient noise, and A lamp control board 68 for driving and controlling the illumination lamp 10B and the like is attached. In addition, a board case 70 in which a main control board 69 for controlling the gaming operation of the pachinko machine 1 is built is provided below the center cover 65. A power supply box 71 is disposed on the lower right side of the substrate case 70.

  Next, the configuration of the control system related to the antiphase sound output of the pachinko machine 1 according to the first embodiment will be described with reference to FIG. FIG. 3 is a block diagram showing the configuration of the antiphase sound output device provided on the sound control board of the pachinko machine 1 according to the first embodiment.

  As shown in FIG. 3, the antiphase sound output device 74 according to the first embodiment is provided on the sound control board 67, and the microphone 21, the sound pressure analysis device 75, the noise frequency analysis device 76, and the effect sound generation sound source. 77, a production sound frequency analysis device 78, a frequency determination circuit 79, an antiphase sound generation sound source 80, an amplifier 81, a frequency removal device 82, and a speaker 13.

  The microphone 21 converts noise generated around the pachinko machine 1 into an electrical signal, and inputs the converted electrical signal to the antiphase sound output device 74.

The sound pressure analyzer 75 measures the sound pressure of the electrical signal of noise input from the microphone 21 and transmits the measurement result to the sound board controller 83. Here, the sound board controller 83 includes a CPU, a ROM in which each control program is stored, a RAM that temporarily stores each parameter value, and the like.
When the measured sound pressure becomes equal to or higher than a predetermined value (for example, 90 dB in the first embodiment), each device is driven and controlled by the sound board controller 83 provided on the sound control board 67, and vice versa. Generate phase sound. On the other hand, when the sound pressure is less than a predetermined value (for example, 90 dB in the first embodiment), each device is controlled to stop and no antiphase sound is generated.

  The noise frequency analysis device 76 is a device that analyzes the frequency of the noise electrical signal input from the microphone 21, and the analysis result is transmitted to a frequency determination circuit 79 described later.

  Further, the effect sound generating sound source 77 is recorded with effect sound data emitted from the speaker 13 and performing various games, and is output to the amplifier 81 as an electric signal.

  The effect sound frequency analysis device 78 is a device that analyzes the frequency of the electrical signal of the effect sound that is fed back from the effect sound generating sound source 77, and the analysis result is transmitted to a frequency determination circuit 79 described later.

  Further, the frequency determination circuit 79 compares the frequency of the noise analyzed by the noise frequency analysis device 76 with the frequency of the production sound analyzed by the production sound frequency analysis device 78, and the frequency that matches each frequency is determined. It is a circuit for determining whether or not there is. Then, the determination result is transmitted to the sound board controller 83.

  Further, the anti-phase sound generating sound source 80 includes the noise electrical signal and the noise based on the analysis results and determination results of the sound pressure analysis device 75, the noise frequency analysis device 76, the production sound frequency analysis device 78, and the frequency determination circuit 79. An electric signal having an opposite phase is generated and output to the amplifier 81.

  Further, the frequency removing device 82 uses the anti-phase sound generating sound source 80 to generate an anti-phase sound when there is a frequency that matches the frequency of the noise and the frequency of the effect sound according to the determination result of the frequency determining circuit 79. The corresponding frequency band is cut from the electrical signal of the noise that is the basis for creating the electrical signal. Therefore, the anti-phase sound generating sound source 80 generates an electric signal of an anti-phase sound having the opposite phase based on the noise whose frequency band is cut by the frequency removing device 82.

  The amplifier is a device that amplifies the electrical signals output from the effect sound generating sound source 77 and the antiphase sound generating sound source 80 at a predetermined ratio and outputs the amplified signals to the speaker 13.

  Furthermore, the speaker 13 converts a sound signal transmitted as an electric signal into air vibration. In the first embodiment, the speaker 13 is used as the sound generating means. However, even if it is a device other than the speaker 13, any device that generates sound by vibrating air has the same functions and effects. Therefore, the embodiment is not limited to the speaker 13.

Hereinafter, the output control processing of the antiphase sound in the antiphase sound output device 74 configured as described above will be described with reference to FIG. FIG. 4 is a flowchart showing an antiphase sound output process of the antiphase sound output device according to the first embodiment. Note that each program shown in the flowchart in FIG. 4 is stored in a ROM included in the sound board control unit 83 of the sound control board 67 and is executed by the CPU.
First, in step (hereinafter abbreviated as S) 1, it is determined whether or not the pachinko machine 1 is currently being played by the player. If the game is not in progress (S1: NO), the antiphase sound output control process is terminated.

  On the other hand, if it is determined that the game is in progress (S1: YES), then the noise generated inside or around the pachinko machine is converted into an electrical signal by the microphone 21 and input to the antiphase sound output device 74. (S2). Thereafter, the process proceeds to S3.

  In S3, the sound pressure of the noise input in S2 is measured by the sound pressure analyzer 75. Subsequently, in S4, it is determined whether or not the sound pressure of the noise measured in S3 is equal to or higher than a predetermined value (90 dB in the first embodiment).

If the sound pressure of the noise is less than 90 dB (S4: NO), there is no noise that needs to output an antiphase sound, so an antiphase sound is output without generating an antiphase sound. The control process ends.
On the other hand, when the sound pressure of the noise is 90 dB or more (S4: YES), the noise frequency is analyzed by the noise frequency analyzer 76 and the effect sound frequency is analyzed by the effect sound frequency analyzer 78 (S5). ).

  Then, based on the analysis result of each frequency analysis device in S5, the frequency determination circuit 79 determines whether there is a matching frequency (S6). If it is determined that there is no matching frequency (S6: NO), the analysis results and determinations of the sound pressure analysis device 75, the noise frequency analysis device 76, the production sound frequency analysis device 78, and the frequency determination circuit 79 are performed. Based on the result, an electrical signal having a phase opposite to that of the noise electrical signal is generated (see FIG. 5) and output to the amplifier 81.

  In S8, the effect sound from the effect sound generating sound source 77 and the antiphase sound created in S7 are amplified by the amplifier 81 at a predetermined ratio and output from the speaker 13. Then, the anti-phase sound output control process ends.

On the other hand, if it is determined that there is a matching frequency (S6: YES), the frequency removal device 82 cuts the corresponding frequency band from the noise electrical signal (S9). Then, the anti-phase sound generating sound source 80 generates an electric signal of an anti-phase sound having the opposite phase based on the noise whose frequency band is cut by the frequency removing device 82 (S10).
In step S11, the effect sound from the effect sound generating sound source 77 and the antiphase sound created in step S10 are amplified by the amplifier 81 at a predetermined ratio and output from the speaker 13.
Here, FIG. 5 is a schematic diagram showing the waveforms of the effect sound, noise, and antiphase sound created based on the noise.

As shown in FIG. 5, the waveform produced by the production sound and the waveform produced by the noise are different in both period and amplitude, but the production sound waveform 90 and the noise waveform 91 may coincide at a specific frequency. Yes (line 94 in FIG. 5). At that time, if an antiphase sound having an antiphase with the noise is output as it is, the effect sound is also reduced together with the noise in the coincident frequency band.
Therefore, in that case, the matching frequency band 93 in the noise is cut, and the output of the antiphase sound created based on the cut noise is prevented, thereby preventing the reduction of the production sound.

As described above, in the pachinko machine 1 according to the first embodiment, noise generated in or around the pachinko machine 1 is input by the microphone 21 (S2), and the sound pressure of the input noise is 90 dB or more. (S4: YES), the frequency band that matches the effect sound and noise is cut (S9) Based on the electrical signal of the noise, an antiphase sound having an antiphase with the noise is created (S10) and output from the speaker 13 Therefore, an antiphase sound having a frequency different from that of the effect sound can be output, noise unnecessary for the player is reduced, and an effect sound or the like useful for the player is not canceled by the antiphase sound. Therefore, it is possible to create a comfortable gaming environment in which the player is not disturbed by concentration or the like due to noise or the like and can sufficiently exhibit the effect.
Further, when the sound pressure of the generated noise is less than 90 dB, no anti-phase sound is generated. Therefore, in a situation where almost no noise is generated, each device is stopped and the performance is improved.

Next, a pachinko machine according to a second embodiment will be described with reference to FIGS. In addition, the same code | symbol as the pachinko machine 1 which concerns on the said 1st Embodiment shows the same or equivalent part as the pachinko machine 1 which concerns on 1st Embodiment.
The overall configuration of the pachinko machine according to the second embodiment and the configuration of the control system are substantially the same as the pachinko machine 1 according to the first embodiment. However, when the frequency determination circuit 79 determines that a coincidence frequency exists, it differs from the first embodiment in that the frequency removing device cuts the frequency band of the effect sound instead of the noise.

  Below, the structure of the control system which concerns on the antiphase sound output of the pachinko machine 1 which concerns on 2nd Embodiment is demonstrated based on FIG. FIG. 6 is a block diagram showing a configuration of an antiphase sound output device provided on the sound control board of the pachinko machine 1 according to the second embodiment.

  As shown in FIG. 6, the antiphase sound output device 95 according to the second embodiment is provided on the sound control board 67, and the microphone 21, the sound pressure analysis device 75, the noise frequency analysis device 76, and the effect sound generation sound source. 77, an effect sound frequency analysis device 78, a frequency determination circuit 79, an antiphase sound generation sound source 80, an amplifier 81, a frequency removal device 96, and a speaker 13.

  The microphone 21 converts noise generated around the pachinko machine 1 into an electric signal, and inputs the converted electric signal to the antiphase sound output device 95.

The sound pressure analyzer 75 measures the sound pressure of the electrical signal of noise input from the microphone 21 and transmits the measurement result to the sound board controller 83. Here, the sound board controller 83 includes a CPU, a ROM in which each control program is stored, a RAM that temporarily stores each parameter value, and the like.
When the measured sound pressure is equal to or higher than a predetermined value (for example, 90 dB in the second embodiment), each device is driven and controlled by the sound board controller 83 provided on the sound control board 67, and vice versa. Generate phase sound. On the other hand, when the sound pressure is less than a predetermined value (for example, 90 dB in the second embodiment), each device is controlled to stop and no antiphase sound is generated.

  The noise frequency analysis device 76 is a device that analyzes the frequency of the noise electrical signal input from the microphone 21, and the analysis result is transmitted to a frequency determination circuit 79 described later.

  Further, the effect sound generating sound source 77 is recorded with effect sound data emitted from the speaker 13 and performing various games, and is output to the amplifier 81 as an electric signal.

  The effect sound frequency analysis device 78 is a device that analyzes the frequency of the electrical signal of the effect sound that is fed back from the effect sound generating sound source 77, and the analysis result is transmitted to a frequency determination circuit 79 described later.

  Further, the frequency determination circuit 79 compares the frequency of the noise analyzed by the noise frequency analysis device 76 with the frequency of the production sound analyzed by the production sound frequency analysis device 78, and the frequency that matches each frequency is determined. It is a circuit for determining whether or not there is. Then, the determination result is transmitted to the sound board controller 83.

  Further, the anti-phase sound generating sound source 80 includes the noise electrical signal and the noise based on the analysis results and determination results of the sound pressure analysis device 75, the noise frequency analysis device 76, the production sound frequency analysis device 78, and the frequency determination circuit 79. An electric signal having an opposite phase is generated and output to the amplifier 81.

  In addition, the frequency removing device 96, when there is a frequency that matches the frequency of the noise and the frequency of the effect sound based on the determination result of the frequency determination circuit 79, the effect sound output from the effect sound generating sound source 77. The corresponding frequency band is cut from the electrical signal. Then, the phase of the cut effect sound is shifted by the cut frequency and output.

  The amplifier is a device that amplifies the electrical signals output from the effect sound generating sound source 77 and the antiphase sound generating sound source 80 at a predetermined ratio and outputs the amplified signals to the speaker 13.

  Furthermore, the speaker 13 converts a sound signal transmitted as an electric signal into air vibration. In the second embodiment, the speaker 13 is used as the sound generating means. However, even if it is a device other than the speaker 13, any device that generates sound by vibrating air has the same functions and effects. Therefore, the embodiment is not limited to the speaker 13.

Hereinafter, the output control processing of the antiphase sound in the antiphase sound output device 95 configured as described above will be described with reference to FIG. FIG. 7 is a flowchart showing an antiphase sound output process of the antiphase sound output device according to the second embodiment. Note that each program shown in the flowchart in FIG. 7 is stored in a ROM provided in the sound board control unit 83 of the sound control board 67 and is executed by the CPU.
First, in S21, it is determined whether or not the pachinko machine 1 is currently being played by the player. If the game is not being played (S21: NO), the anti-phase sound output control process is terminated.

  On the other hand, if it is determined that the game is in progress (S21: YES), then the noise generated inside or around the pachinko machine is converted into an electrical signal by the microphone 21 and input to the anti-phase sound output device 95. (S22). Thereafter, the process proceeds to S23.

  In S23, the sound pressure of the noise input in S22 is measured by the sound pressure analyzer 75. Subsequently, in S24, it is determined whether or not the sound pressure of the noise measured in S23 is equal to or greater than a predetermined value (90 dB in the second embodiment).

When the sound pressure of the noise is less than 90 dB (S24: NO), there is no noise that needs to output an antiphase sound, and therefore an antiphase sound is output without generating an antiphase sound. The control process ends.
On the other hand, when the sound pressure of the noise is 90 dB or more (S24: YES), the noise frequency is analyzed by the noise frequency analyzer 76 and the effect sound frequency is analyzed by the effect sound frequency analyzer 78 (S25). ).

  Then, based on the analysis result of each frequency analysis device in S25, the frequency determination circuit 79 determines whether there is a matching frequency (S26). If it is determined that there is no matching frequency (S26: NO), the analysis results and determinations of the sound pressure analysis device 75, the noise frequency analysis device 76, the production sound frequency analysis device 78, and the frequency determination circuit 79 are performed. Based on the result, an electrical signal having a phase opposite to that of the noise electrical signal is generated (see FIG. 5) and output to the amplifier 81.

  In S28, the effect sound from the effect sound generating sound source 77 and the antiphase sound created in S27 are amplified at a predetermined ratio by the amplifier 81 and output from the speaker 13. Then, the anti-phase sound output control process ends.

On the other hand, if it is determined that there is a matching frequency (S26: YES), the frequency removal device 96 cuts the corresponding frequency band from the electrical signal of the effect sound (S29). Then, the phase of the effect sound is shifted by the cut frequency band (S30).
Then, the effect sound whose phase is shifted returns to S25 again, and the effect sound frequency analyzer 78 analyzes the frequency.

Then, based on the analysis result of each frequency analyzer, the frequency determination circuit 79 determines whether there is a matching frequency (S26). If it is determined that there is no frequency at which the noise and the effect sound with the phase shifted coincide with each other (S26: NO), the process proceeds to S27.
On the other hand, when the frequency coincides again between the effect sound and the noise whose phase is shifted, the process proceeds to S29, where the matching frequency band is further cut, and the processing is continued.
Here, FIG. 8 is a diagram showing the waveforms of the effect sound, noise, and antiphase sound created based on the noise.

As shown in FIG. 8, the waveform produced by the production sound and the waveform produced by the noise are different in both period and amplitude, but the production sound waveform 90 and the noise waveform 91 may coincide with each other at a specific frequency. Yes (line 97 in FIG. 8). At that time, if an antiphase sound having an antiphase with the noise is output as it is, the effect sound is also reduced together with the noise in the coincident frequency band.
Therefore, in that case, the matching frequency band 98 in the effect sound is cut, and the phase of the effect sound is shifted by the cut frequency (see arrow 99), thereby preventing the reduction of the effect sound.

As described above, in the pachinko machine 1 according to the second embodiment, noise generated inside or around the pachinko machine 1 is input by the microphone 21 (S22), and the sound pressure of the input noise is 90 dB or more ( S24: YES), an antiphase sound composed of an electric signal having a phase opposite to that of the noise electric signal is output (S27, S28). Further, when there is a matching frequency between the effect sound and the noise (S26: YES), the matching frequency band is cut (S29), and the effect sound is shifted in phase by the cut frequency band. Is output from the speaker 13 (S30, S28), so that an antiphase sound having a frequency different from that of the effect sound can be output, noise unnecessary for the player can be reduced, and the effect sound useful for the player, etc. Is not canceled out by anti-phase sound. Therefore, it is possible to create a comfortable gaming environment in which the player is not disturbed by concentration or the like due to noise or the like and can sufficiently exhibit the effect. Furthermore, by shifting the phase of the effect sound by the cut frequency band, it is possible to generate a smooth sound even if the effect sound has the frequency deleted.
Further, when the sound pressure of the generated noise is less than 90 dB, no anti-phase sound is generated. Therefore, in a situation where almost no noise is generated, each device is stopped and the performance is improved.

In addition, this invention is not limited to the said Example, Of course, various improvement and deformation | transformation are possible within the range which does not deviate from the summary of this invention.
For example, in the first and second embodiments, when a sound pressure equal to or higher than a predetermined sound pressure (90 dB) is measured, an antiphase sound is generated. However, the predetermined sound pressure may be freely changed. good. Thereby, the game store side can set an appropriate sound pressure according to the game environment of the game store.

In the first and second embodiments, the speaker 13 is provided on the upper plate 12, and the microphone 21 is provided on the synthetic resin plate 14. However, the installation position of the microphone 21 is closer to the player's ear. desirable. Thereby, the sound pressure analysis device 75 can analyze the sound pressure close to the sound pressure of the noise that the player actually hears.
Further, it is desirable that the installation position of the speaker 13 is close to the player's ear. Thereby, it is possible to reliably reduce the noise heard by the player while keeping the sound pressure of the antiphase sound low.
Furthermore, it is desirable that the speaker 13 has directivity toward the player's ear. Thereby, it is possible to reliably reduce the noise heard by the player while keeping the sound pressure of the antiphase sound low.

It is the front view showing the whole pachinko machine concerning a 1st embodiment. It is the rear view which showed the pachinko machine concerning a 1st embodiment. It is a block diagram which shows the structure of the antiphase sound output apparatus provided in the sound control board of the pachinko machine 1 which concerns on 1st Embodiment. It is the flowchart which showed the antiphase sound output process of the antiphase sound output device concerning 1st Embodiment. It is the schematic diagram which showed each waveform of a production sound, noise, and the antiphase sound created based on the noise. It is a block diagram which shows the structure of the antiphase sound output apparatus provided in the sound control board of the pachinko machine 1 which concerns on 2nd Embodiment. It is the flowchart which showed the antiphase sound output process of the antiphase sound output device concerning 2nd Embodiment. It is the schematic diagram which showed each waveform of a production sound, noise, and the antiphase sound created based on the noise.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pachinko machine 13 Speaker 21 Microphone 74, 95 Reverse phase sound output device 75 Sound pressure analysis device 76 Noise frequency analysis device 77 Production sound generation sound source 78 Production sound frequency analysis device 79 Frequency judgment circuit 80 Antiphase sound generation sound source 82, 96 Frequency Removal device 83 Sound board controller

Claims (4)

Input means for converting unnecessary sound generated inside or around the gaming machine into an electric signal and inputting it;
First frequency analysis means for analyzing the frequency of an electrical signal of unwanted sound input by the input means;
Second frequency analysis means for analyzing the frequency of an electrical signal of a performance sound that is emitted around the gaming machine and performs a game;
The frequency of the electrical signal of the unnecessary sound analyzed by the first frequency analyzing means and the frequency of the electrical signal of the effect sound analyzed by the second frequency analyzing means are compared, and the frequency of the electrical signal of the unnecessary sound and the frequency Frequency comparison means for determining whether or not there is a coincidence frequency that matches the frequency of the electrical signal of the production sound;
When the frequency comparing means determines that there is a coincidence frequency between the frequency of the electrical signal of the unwanted sound and the frequency of the electrical signal of the effect sound, the frequency of the coincidence frequency is determined from the frequency of the electrical signal of the unwanted sound. First frequency erasing means for erasing;
First anti-phase signal creating means for creating an electrical signal having an opposite phase to the electrical signal of the unwanted sound from which the coincidence frequency has been erased by the first frequency erasing means;
A gaming machine comprising: first antiphase sound output means for outputting an electric signal having an antiphase generated by the first antiphase generating means as an antiphase sound. Sound pressure measuring means for measuring the sound pressure of the unnecessary sound,
The gaming machine according to claim 1, wherein when the sound pressure measuring means measures a sound pressure of a predetermined value or more, the first antiphase sound output means outputs an antiphase sound. Input means for converting unnecessary sound generated inside or around the gaming machine into an electric signal and inputting it;
First frequency analysis means for analyzing the frequency of an electrical signal of unwanted sound input by the input means;
Second frequency analysis means for analyzing the frequency of an electrical signal of a performance sound that is emitted around the gaming machine and performs a game;
The frequency of the electrical signal of the unnecessary sound analyzed by the first frequency analyzing means and the frequency of the electrical signal of the effect sound analyzed by the second frequency analyzing means are compared, and the frequency of the electrical signal of the unnecessary sound and the frequency Frequency comparison means for determining whether or not there is a coincidence frequency that matches the frequency of the electrical signal of the production sound;
When the frequency comparison means determines that there is a coincidence frequency between the frequency of the electrical signal of the unwanted sound and the frequency of the electrical signal of the effect sound, the frequency of the coincidence frequency is determined from the frequency of the electrical signal of the effect sound. Second frequency erasing means for erasing;
Phase changing means for changing the phase of the electrical signal of the effect sound from which the coincidence frequency has been erased by the second frequency erasing means;
Production sound output means for outputting an electrical signal of the production sound whose phase has been changed by the phase sound change means as production sound;
A second antiphase signal generating means for generating an electric signal having a phase opposite to that of the unnecessary sound electric signal;
A gaming machine, comprising: second antiphase sound output means for outputting an electric signal having an opposite phase to the electric signal of the unnecessary sound created by the second antiphase sound creating means as an antiphase sound. Sound pressure measuring means for measuring the sound pressure of the unnecessary sound,
The gaming machine according to claim 3, wherein when the sound pressure measuring means measures a sound pressure equal to or higher than a predetermined value, the second antiphase sound output means outputs an antiphase sound.

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