JPH0499580A - Game machine with sound image movement function - Google Patents

Abstract

PURPOSE:To form a game machine provided with image control function for more improving reality at a low cost by generating the feeling of moving the firing sounds of a machine gun or a rocket gun, for example, from the front to the back, from the back to the front or obliquely according to a control signal from the game machine. CONSTITUTION:When a signal applied to the right and left ears of a listener M by impressing signals to headphone units 11-1 and 11-2 is equivalent to a signal applied by a real sound source loudspeaker 14 arranged on the right back side of the listener M, the listener M practically senses a dummy sound source loud-speaker. In order to create such a phenomenon, both ear common circuits 6-5 and both ear difference creation circuits 7-5 are connected to the front steps of the right and left headphone units 11-2 and 11-1 so that the characteristic of both ear common circuit 6-5 can be H11/H5 and the characteristic of both ear difference creation circuit 7-5 can be H12/H11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a sense of dynamic movement during headphone playback by continuously localizing a sound image to four locations on the front, back, left, and right using control signals from a game machine. This relates to a game machine that can reproduce a dimensional sound field.

BACKGROUND TECHNOLOGY FIG. 9 shows a conventional two-speaker specification game machine. In FIG. is reproduced by the two speakers 11-1 and 11-2.

In this conventional example, since the voltage level difference between the two channel audio signals is controlled, the range of the sound image perceived by the listener M is limited to the shaded area AI shown in FIG. 9, which is a drawback. there were.

The problem to be solved by the invention is that the above conventional configuration realizes that the sound inside the game machine where the audio is played is always played only when the person listening is stationary. The problem was that it was not possible to generate a sense of movement in accordance with the actual moving speed or the content of the video signal.

The present invention is intended to solve the above-mentioned problems, and it is possible to generate, for example, the sound of firing a machine gun or rocket cannon from front to back, from back to front, or in a diagonal direction, using a control signal from a game machine. Second, it is an object of the present invention to provide a game machine with a sound image control function that further improves the sense of realism at a low cost.

l [Means for Solving B In order to solve the above problems, the present invention provides branching means for branching an audio signal inputted from a first input terminal into four channels, and a branching means for branching an audio signal inputted from a first input terminal into four channels, and an output signal of each of the branching means. an amplitude control means for inputting the input signal and changing the amplitude of an output signal with respect to the input signal; a first virtual sound source speaker creation means for creating a virtual sound source speaker in front of the right side of the listener; and the second amplitude control means. a second virtual sound source speaker generating means for inputting the output signal of and creating a virtual sound source speaker at the right rear of the listener; a fourth virtual sound source speaker generating means that receives the output signal of the fourth amplitude control means and generates a virtual sound source speaker at the rear left of the listener; A first output signal output from each of the second virtual sound source speaker generating means and a second output signal output from each of the third and fourth virtual sound source speaker generating means. a second output signal outputted from each of the first and second virtual sound source speaker creation means of the output signal; and a second output signal outputted from each of the third and fourth virtual sound source speaker creation means. 1st
a second addition means for adding the output signals of the first and second addition means, and headphones for outputting audio based on the output signals of the first and second addition means, and a control signal input from the second input terminal. Accordingly, the output signal of the amplitude control means is controlled.

Effects of the present invention With the above-described configuration, it is possible to move the sound image arbitrarily in 360 degrees in the horizontal plane of the listener during headphone playback, and in particular, it is possible to fully automate the movement of the sound image in synchronization with the contents of a game machine, for example, a game machine. It becomes possible to perform a performance corresponding to the 0NOFF signal of the key of the player who operates the controller.

EXAMPLE Hereinafter, a game machine with a sound image moving function according to an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a game machine with a sound image moving function according to the present invention. In FIG. 1, an audio signal S1 input to an input terminal 1 is branched into four channels by a branching means 2, and each signal is sent to a four-channel amplitude controller 3-1.
1.3-2.3-3°3-4. Each of the amplitude controllers receives an output signal T1. T2. T3. ”r
4, each amplitude is controlled independently. Further, the amplitude control signal generation circuit 5 generates output signals T], T2T3 . Output T4.

On the amplitude side, the outputs of the ■devices 3-1 and 3-3 are respectively
A virtual sound source speaker generating means 8-1 for localizing the virtual sound source speaker 12-1 in front of the right 90" direction and a virtual sound source speaker creating means 8-1 for localizing the virtual sound source speaker 12-2 in front of the left 90" direction. On the other hand, the amplitude controllers 3-2 and 3-4 are input to the listener M.
A virtual sound source speaker generating means 8-3 for localizing the virtual sound source speaker 12-3 rearward from the right 90° direction, and a virtual sound source speaker generating means 8-3 for localizing the virtual sound source speaker 12-4 rearward from the left 90° direction. It is input to means 8-4. Note that the virtual sound source speaker generating means 8-1 to 8-4 include binaural common circuits 6-1 to 64 and binaural difference generating circuit 7, respectively.
-1 to 7-4. The first output S7 of the virtual sound source speaker creating means 8-1, the first output S9 of the virtual sound source speaker creating means 83, the second output 312 of the virtual sound source speaker creating means 82, and the virtual sound source speaker creating means 8 -4 second output S14 is added by adder 9-1 and S15
Output.

On the other hand, the second output S8 of the virtual sound source speaker generating means 8-1
and the second output 510 of the virtual sound source speaker generating means 8-3.
, the first output Sll of the virtual sound source speaker generating means 82, and the first output S13 of the virtual sound source speaker generating means 8-4 are added by the adder 9-2 and output S16. Adder 9-1. ．． Outputs 315 and 316 of 91 are amplified in power by power amplifiers 10-1 and 10-2, respectively, and reproduced by headphones 11-1 and 11-2 worn on the left and right ears of listener M.

Note that the fact that the virtual sound source speakers 12-1 to 12-4 are displayed with dotted lines also indicates that they are perceived by the listener M as virtual sound source speakers, even though the speakers do not actually exist. There is.

Next, the relationship between the control signal S2 from the game machine, the amplitude controllers 3-1 to 3-4, and the sound image perceived by the listener M will be explained with reference to FIGS. 2, 3, and 4.

According to the present invention, the sound image is transmitted through the real sound image speaker 11-1.11-2 and the virtual sound source speaker 12-1.1 shown in FIG.
It is possible to freely localize the area A2 of 360° around the listener M surrounded by 2-2.

Now, as shown in Fig. 2, the sound image is transmitted to the virtual sound source speaker 12-
3, passing to the right side of listener M, virtual sound source speaker 12-1
A case will be described in which the sound image is moved in the straight line 11 direction up to .

First, as shown in FIG. 6(a), the amplitude controllers 3-1 to 3
-4 by controlling the amplitude control signals T1 to T4 input to the rectangle ZI, the amplitude control signals 3-1 to 3-4
An input signal of a constant amplitude to the input signal becomes an output signal with a waveform of Zo shown in FIG. 6 (bl). Therefore, in order to realize the sound image movement shown in FIG. When the amplitude is a sine wave, the output signals 53 to S6 of the amplitude controllers 3-1 to 3-4 are as shown in FIG. 7(a) based on the sound wound localization control method using the level difference between channels. ), (
C) and waveforms Z2 to Z5 shown in (d), respectively. In other words, comparing FIG. 2 and FIG. 7, at time t8, the sound image position is at the virtual sound source speaker 12-1.
At time L9, the virtual sound source speaker 12-1 is at the position of It will be located between. That is, as a result, the sound image direction 11 shown in FIG. 2 is realized.

FIG. 4 shows the control signals T1 to T4 of the amplitude controllers 3-1 to 3-4 that realize this, that is, the amplitude control signal generation circuit 5.
The relationship between the output signals T1 to T4 and the timing signal S2 input from the input terminal 4 is shown. First, a control signal S2 from the game machine is input to the input terminal 4. This signal S2 is, for example, normally O, but the sound image control B
The TTL level is reached at the start time, here time t1.

Then, which sound image movement pattern is to be used is encoded and transmitted in serial or parallel almost simultaneously. As soon as the amplitude control signal generation circuit 5 receives the input signal S2, it encodes and knows which sound image movement pattern it is, and generates control signals T1 to T1 having the necessary waveforms Y1 to Y4.
Output T4.

FIG. 3 shows, as another example of a sound image movement pattern, a case where the sound image moves from the virtual sound source speaker 12-4 through the center of the listener M to the virtual sound source speaker 12-1. The control signals T1 to T4 that realize this are as shown in FIG. In other words, how to control the movement of the sound image is based on the control signals T1 to T4, and is based on the control signals T1 to T4 for the listener M.
It is possible to improve the sense of realism in a variety of ways, such as by rotating the area around the object or moving it multiple times in different directions with a single start signal, in accordance with the content of the game.

Now, with reference to FIG. 8, the above-mentioned virtual sound source speaker generation circuits 8-1 to 8-4 will be explained. In the same figure, 6-
5 is a binaural common circuit, 7-5 is a binaural difference generation circuit, and these two circuits create an imaginary sound source speaker generation circuit 8-5.
is formed.

Moreover, in FIG. 8, HI+ and H1! is the number of transmission intervals between the actual sound source speaker 14 and the left and right ears of the listener M, and H5 is the number of transmission intervals between the actual sound source speaker 14 and the left and right ears of the listener M,
1-2 is a transfer function between the left and right ears of listener M.

Now, the signals given to the left and right ears of the listener M by applying the signals to the headphone unit) 11-1 and 11-2 are equivalent to the signals given by the actual sound source speaker 14 placed at the rear right of the listener M. If so, the listener M perceives it as if it were a false source speaker.

In order to create the phenomenon described in 2, a binaural common circuit 6- is installed before the left and right headphone units 11-1 and 11-2.
5 and the binaural difference generating circuit 7-5 are connected, and the characteristics of the binaural common circuit 6-5 are H11/H5, and the characteristics of the binaural difference generating circuit 7-5 are Hfi/HI+. It is configured to be.

By using such a virtual sound source speaker generation circuit, a virtual sound source speaker 20 is created at the rear right of the listener M,
Listener M has left and right hesophone units 11-1 and 11-2.
Since the listener M is not listening to the sound radiated from the listener M, the listener M perceives it as if an actual sound source speaker is placed at the rear right of the listener M and is listening to the sound being radiated from there.

FIG. 10 is a block diagram of another embodiment of the game machine with a sound image moving function according to the present invention.

The fundamental difference from the embodiment shown in FIG. 1 is the difference in performance of the phone that listener M is listening to.

This will be explained in detail with reference to FIG.

Headphone unit 14-1.1 worn by listener M
The characteristics of 4-2 are designed to be equivalent to the characteristics of the main signal HI+ of the actual sound source speaker in front. An example of a product so far is the Technics EAH-300, which is designed to have characteristics in the forward 30' direction.
There are headphones etc.

Since the characteristic Hs from the headphone unit to the listener M's ears is equivalent to the characteristic 'I+ of the main signal of the real sound source speaker, the circuit 8-6 for creating a virtual sound source speaker at the position of the real sound source speaker is shown in FIG. As shown, the configuration is very simple, consisting of a branching means that branches the input signal into two, and a binaural difference generation circuit 7-6 that generates the characteristic H of the crosstalk signal of the actual sound source speaker on one side. becomes.

Note that the headphone units 14-1 and 14-2 shown in FIG. 10 and FIG.

In addition, in FIGS. 1 and 10, C is placed in front of listener M.
An RT or screen 15 and an input terminal 14 for inputting a video signal S are shown.

Effects of the Invention As described above, according to the present invention, when the listener is stationary, it is possible to create the impression that the listener is moving at the same speed as the car on the screen, or to create the illusion of firing a rocket or machine gun. You can enjoy a game that creates a three-dimensional sound field that is closer to reality.

[Brief explanation of drawings]

FIG. 1 101gJ is a block diagram of a game machine with a sound image movement function in one embodiment of the present invention, FIG. 2 FIG. 3 is an explanatory diagram of an example of a pattern for producing sound image movement, FIG. 4 1 FIG. FIG. 6 is a characteristic diagram of the control signal of the amplitude controller according to the present invention, FIG. 7 is a characteristic diagram of the control signal of the amplitude controller according to the present invention, and FIGS. 8 and 11 are imaginary sound sources according to the present invention. A block diagram of a speaker generation circuit, FIG. 9 is a block diagram of a conventional game machine. 1.4.14...Input terminal, 2...4
Channel branching means, 3-1.3-2.3-3.3-4
・・・・・・Amplitude controller, 6-1.6-2.6-3.6
-4゜6-5...Binaural common circuit, 7-1.7-
2.73 7-4.7-5.7-6... Binaural difference generation circuit, 8-1.8-2. 8-3. 8-4. 8
-5. 86...Imaginary sound source speaker generation circuit, 9
-1.9-2...Adder, 12-1.12-2
．． 12-3゜12-4.20.21...Imaginary sound source speaker. Name of agent: Patent attorney Shigetaka Awano

Claims (1)

[Claims] branching means for branching an audio signal input from a first input terminal into four channels; and amplitude control means for inputting each output signal of the branching means and changing the amplitude of the output signal with respect to the input signal. , a first virtual sound source speaker generating means for creating a virtual sound source speaker in front of the right side of the listener;
a second virtual sound source speaker generating means which inputs the output signal of the amplitude control means and creates a virtual sound source speaker at the rear right of the listener; a third virtual sound source speaker creating means for creating a virtual sound source speaker at the rear left of the listener; and a fourth virtual sound source speaker creating means for inputting the output signal of the fourth amplitude control means to create a virtual sound source speaker at the rear left of the listener. , a first output signal output from each of the first and second virtual sound source speaker generating means and a second output signal output from each of the third and fourth virtual sound source speaker generating means. a first addition means for adding the output signal, a second output signal output from each of the first and second virtual sound source speaker creation means, and a second output signal output from each of the third and fourth virtual sound source speaker creation means. a second adding means for adding the first output signals outputted from each; and headphones for outputting audio based on the output signals of the first and second adding means; A game machine with a sound image moving function, characterized in that an output signal of the amplitude control means is controlled by a control signal input from a terminal.