JP2012086089A - Game sound output device, game sound control method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a game sound output device, etc., capable of outputting game sound to be issued from a virtual sound generating object properly in accordance with a display situation.SOLUTION: An image generation section 150 generates a display image as a current display range projected at a current magnification. A sound generating object identifying part 160 identifies all the sound generating objects contained in the generated display image based on relation between the coordinates of the display range as controlled by a display range control part 130, and arrangement locations of the sound generating objects under control of an object information memory part 110. A sound volume setting part 170 obtains sound sources for the sound generating bodies, and values of sound volume in accordance with the current magnification by referring to a table of prescribed sound volumes. An output sound control part 190 reads sound data for a sound source corresponding to each sound generating object identified by a sound generating object identifying part 160, and controls to make each sound volume set by a sound volume setting part 170 to be output as game sound.

Description

  The present invention relates to a game sound output device, a game sound control method, and a program that can appropriately output a game sound emitted from a virtual sound generator in accordance with a display state.

Conventionally, various game devices (video game devices and the like) have been developed for home use and business use. Such a game apparatus generally displays a game image in which an object such as a character is arranged in a virtual space, and outputs game sounds such as sound effects, background sounds, and utterance sounds.
For example, in a racing game, an engine sound or a brake sound of a car is output as a game sound in a fighting fight game, and a realistic sound is enhanced.

  In a game apparatus that outputs such game sounds, a device for improving the reality is also devised. As an example, a technology of a three-dimensional game device that changes the reflected sound of an engine sound in accordance with an object (tunnel, wall, tree, etc.) around a running race car in a racing game is also disclosed (for example, , See Patent Document 1).

JP 2002-336544 A (page 4-5, FIG. 1)

In the game device described above, a game image (such as a map) may be enlarged and displayed. For example, in a battle simulation game or the like, a part of the map can be enlarged and displayed in detail by a zoom function or the like.
However, the game sound does not change at all regardless of the presence or absence of the expansion, or is switched to another game sound prepared in advance, and does not match the display status, and the presence is sufficient There was a problem that it could not be raised.
For this reason, it has been required to appropriately output the game sound according to the display state such as enlargement.

  The present invention has been made to solve such a problem, and a game sound output device and a game sound control method capable of appropriately outputting a game sound emitted from a virtual sound generator in accordance with a display situation And to provide a program.

  A game sound output device according to a first aspect of the present invention is a game sound output device that outputs a sound emitted from a virtual sounding body included in a display image as a game sound, and includes an operation reception unit and an image generation unit. , A volume setting unit, and an output sound control unit.

  First, the operation reception unit receives an instruction to enlarge or reduce a display image. The image generation unit generates a display image with an enlargement ratio designated by the received enlargement instruction or reduction instruction. The volume setting unit calculates a volume based on the sounding body included in the generated display image and the instructed magnification, and sets the calculated volume to the sounding body. Then, the output sound control unit outputs a game sound based on the set sound volume of the sounding body.

That is, the operation reception unit receives a display image enlargement instruction or reduction instruction, and the image generation unit generates a display image with an enlargement ratio specified by the received enlargement instruction or reduction instruction. The volume setting unit calculates the volume based on the sounding body included in the generated display image and the specified magnification, and sets the calculated volume to the sounding body. Then, the output sound control unit outputs a game sound based on the volume of the sounding body set in this way. For this reason, the game sound emitted from the sounding body can be output according to the display state without performing complicated calculations.
As a result, the game sound emitted from the virtual sounding body can be appropriately output according to the display status.

The game sound output device is information that prescribes the volume of the sounding body in advance, and the sound volume according to the enlargement magnification of the display image is prescribed respectively, so that the enlargement magnification that becomes the maximum sound volume varies depending on the sounding body. A storage unit for storing the specified volume information specified in
The volume setting unit may calculate a volume corresponding to an enlargement magnification for a sounding body included in the generated display image based on the stored prescribed volume information, and set the calculated volume to the sounding body.

The operation accepting unit further accepts a display image scroll instruction,
The image generation unit may generate a display image corresponding to the received scroll instruction.

  The volume setting unit may further adjust the volume according to the display ratio of the sounding body when all the sounding bodies are not displayed in the display image.

  A game sound control method according to a second aspect of the present invention includes an operation reception unit, an image generation unit, a volume setting unit, and an output sound control unit, and sounds emitted from a virtual sounding body included in a display image. Is a game sound control method in a game sound output device that outputs a sound as a game sound, and includes an operation reception step, an image generation step, a volume setting step, and an output sound control step.

  First, in the operation accepting step, an instruction to enlarge or reduce the display image is accepted. In the image generation unit step, a display image of the enlargement magnification designated by the received enlargement instruction or reduction instruction is generated. In the sound volume setting step, the sound volume is calculated based on the sounding body included in the generated display image and the specified magnification, and the calculated sound volume is set as the sounding body. In the output sound control step, the game sound is output based on the set sound volume of the sounding body.

That is, in the operation accepting step, an instruction for enlarging or reducing the display image is accepted, and in the image generating step, a display image having an enlargement ratio designated by the accepted enlarging instruction or reducing instruction is generated. In the volume setting step, the volume is calculated based on the sounding body included in the generated display image and the instructed magnification, and the calculated volume is set as the sounding body. In the output sound control step, a game sound is output based on the volume of the sounding body set in this way. For this reason, the game sound emitted from the sounding body can be output according to the display state without performing complicated calculations.
As a result, the game sound emitted from the virtual sounding body can be appropriately output according to the display status.

  A program according to a third aspect of the present invention is configured to cause a computer (including an electronic device) to function as the game sound output device.

  This program can be recorded on a computer-readable information recording medium such as a compact disk, flexible disk, hard disk, magneto-optical disk, digital video disk, magnetic tape, and semiconductor memory.

  The above program can be distributed and sold via a computer communication network independently of the computer on which the program is executed. The information recording medium can be distributed and sold independently of the computer.

  According to the present invention, it is possible to appropriately output a game sound emitted from a virtual sounding body in accordance with a display state.

It is a mimetic diagram showing an outline composition of a game device concerning an embodiment of the present invention. It is a mimetic diagram showing the outline composition of the game sound output device concerning the embodiment of the present invention. It is a schematic diagram which shows an example of the table for setting a regular volume. (A) is a graph which shows the relationship between an expansion magnification and a sound volume, (b) is a display example of the character at the time of an optimal magnification. (A), (b) is a schematic diagram for demonstrating a display area | region etc. FIG. (A)-(d) is a schematic diagram for demonstrating the display image displayed according to an expansion magnification. (A), (b) is a schematic diagram for demonstrating the case where all the images of a sounding body are not displayed. It is a flowchart which shows an example of the game sound output process which concerns on embodiment of this invention. (A)-(f) is a schematic diagram for demonstrating the relationship between a specific display image and the game sound output.

  Embodiments of the present invention will be described below. In the following, for ease of understanding, an embodiment in which the present invention is applied to a portable game machine (game device) will be described. However, the present invention is similarly applied to information processing devices such as various computers, PDAs, and mobile phones. The invention can be applied. In other words, the embodiments described below are for illustrative purposes and do not limit the scope of the present invention. Therefore, those skilled in the art can employ embodiments in which each or all of these elements are replaced with equivalent ones, and these embodiments are also included in the scope of the present invention.

(Embodiment 1)
FIG. 1 is a schematic diagram showing a schematic configuration of a typical game device in which the game sound output device according to the embodiment of the present invention is realized. Hereinafter, a description will be given with reference to FIG.

  The game apparatus 1 includes a processing control unit 10, a connector 11, a cartridge 12, a wireless communication unit 13, a communication controller 14, a sound amplifier 15, a speaker 16, an operation key 17, and a first display unit 18. And a second display unit 19 and a touch panel 20.

The processing control unit 10 includes a CPU (Central Processing Unit) core 10a, an image processing unit 10b, an audio processing unit 10c, a VRAM (Video Random Access Memory) 10d, a WRAM (Work RAM) 10e, and an LCD (Liquid Crystal). A display) controller 10f and a touch panel controller 10g.
In addition, the processing control unit

  The CPU core 10a controls the overall operation of the game apparatus 1 and is connected to each component to exchange control signals and data. Specifically, a program and data stored in a ROM (Read Only Memory) 12a in the cartridge 12 are read out with the cartridge 12 mounted in the connector 11, and predetermined processing is executed.

  The image processing unit 10b processes the data read from the ROM 12a in the cartridge 12 and the data processed by the CPU core 10a, and stores the processed data in the VRAM 10d.

  The sound processing unit 10c includes a predetermined number of sound source data and the like, and generates sound effects and music data to be generated according to the progress of the game.

The VRAM 10d is a memory for storing information for display, and stores image information processed by the image processing unit 10b and the like.
The WRAM 10e stores work data and the like necessary when the CPU core 10a executes various processes according to the program.

  The LCD controller 10f controls the first display unit 18 and the second display unit 19 to display a predetermined display image. For example, the LCD controller 10 f converts the image information stored in the VRAM 10 d into a display signal at a predetermined synchronization timing, and outputs it to the first display unit 18. In addition, the LCD controller 10 f displays a predetermined instruction icon or the like on the second display unit 19.

  The touch panel controller 10g detects contact (touch) on the touch panel 20 with a touch pen or a user's finger. For example, in a state where a predetermined instruction icon or the like is displayed on the second display unit 19, contact and release on the touch panel 20 and their positions are detected.

  The connector 11 is a terminal that can be detachably connected to the cartridge 12, and transmits / receives predetermined data to / from the cartridge 12 when the cartridge 12 is connected.

The cartridge 12 includes a ROM 12a and a RAM (Random Access Memory) 12b.
The ROM 12a stores a program for realizing the game and image data, sound data, and the like accompanying the game.
The RAM 12b stores various data indicating the progress of the game.
When the game apparatus 1 is turned on with such a cartridge 12 mounted, the program of the ROM 12a is executed, and the game sound output apparatus of the present embodiment is realized.

The wireless communication unit 13 is a unit that performs wireless communication with another game device 1 and a predetermined wireless access point, and transmits / receives predetermined data via an antenna (not shown) (built-in antenna or the like).
The wireless communication unit 13 is assigned a unique MAC (Media Access Control) address.

The communication controller 14 controls the wireless communication unit 13 and mediates wireless communication performed between the process control unit 10 and the process control unit 10 of another game device 1 in accordance with a predetermined protocol.
Further, when the game apparatus 1 connects to the Internet via a nearby wireless access point or the like, wireless communication performed between the processing control unit 10 and the wireless access point or the like is performed according to a protocol compliant with the wireless LAN. Intermediary communication.

The sound amplifier 15 amplifies the audio signal generated by the processing control unit 10 (audio processing unit 10 c) and supplies it to the speaker 16.
The speaker 16 is composed of, for example, a stereo speaker, and outputs predetermined music sound, sound effect, and the like according to the audio signal amplified by the sound amplifier 15.

  The operation key 17 includes a plurality of key switches and the like appropriately arranged on the game apparatus 1 and receives a predetermined instruction input according to a user operation.

The 1st display part 18 and the 2nd display part 19 consist of LCD etc., are controlled by LCD controller 10f, and display a game image etc. suitably.
Note that the second display unit 19 displays an instruction icon or the like for inputting an operation instruction from the user by touching the touch panel 20.

The touch panel 20 is arranged so as to be superimposed on the front surface of the second display unit 19 and accepts an input by contact with a touch pen or a user's finger.
The touch panel 20 includes, for example, a pressure-sensitive touch sensor panel or the like, detects pressure of a touch pen or the like, and detects a touch operation such as contact and its position (touch position). In addition, the touch panel 20 may detect contact with a user's finger or the like from a change in capacitance or the like.

(Outline configuration of game sound output device)
FIG. 2 is a schematic diagram showing a schematic configuration of the game sound output device according to the present embodiment. As an example, the game sound output device 100 is a device that outputs, as a game sound, a sound generated by an object serving as a sounding body while displaying an object arranged in a virtual space as a game image. More specifically, the present invention is applied to a game (sound search game) for finding out which object is producing sound (sound generator) while the player appropriately changes the display of the game image. Hereinafter, a description will be given with reference to FIG.

  The game sound output device 100 includes an object information storage unit 110, an operation reception unit 120, a display area management unit 130, an enlargement magnification management unit 140, an image generation unit 150, a sound generator identification unit 160, and a volume setting unit. 170, a sound source 180, and an output sound control unit 190.

First, the object information storage unit 110 stores information on various objects arranged in the virtual space.
For example, the object information storage unit 110 stores information on various objects such as characters, buildings, furniture, figurines,... Arranged in a two-dimensional virtual space. That is, the object information storage unit 110 stores information such as an image, an arrangement position (in the case of a moving object, a current position, etc.), a bounding box, and the like for each object.

The objects also include objects that are virtual sound generators that emit sound. As an example, a character that walks around becomes a sounding body that emits footsteps, and a clock hung on a wall or the like becomes a sounding body that emits a second hand sound.
The object information storage unit 110 also stores information on the prescribed volume corresponding to the magnification of the display image (game image) for each sound generator. Specifically, the object information storage unit 110 further stores a table of prescribed volume as shown in FIG.
Note that the magnification in the figure indicates the magnification at which the display image is magnified by an enlargement instruction from the player, which will be described later (for example, five levels of 1 ×, 2 ×, 4 ×, 8 ×, 16 ×). Yes. That is, with the enlargement magnification “1” as a reference, the enlargement magnification “2” is the 2 × zoom. Similarly, “4” is the 4 × zoom, “8” is the 8 × zoom, and “16” is the 16th. The zoom is doubled. In addition, such a value of the enlargement factor is an example, and can be appropriately changed according to the game type, contents, and the like.

The specified volume of the sounding body (for example, five levels of volume 1 to volume 5) corresponding to each magnification is specified in the specified volume table. Specifically, the sounding body (object) of “Character A” in FIG. 3 will be described as an example. The sound source is “footsteps”, and the prescribed volume of the “footsteps” is an enlargement factor (1, 2, 2, 4, 8). That is, when the enlargement magnification is “1”, the sound volume (volume value) to be set is “1”, and when the enlargement magnification is “2”, the sound volume is “2”. Similarly, when the magnification is “4”, the volume is “3”, when the magnification is “8”, the volume is “5”, and when the magnification is “16”, the volume is “2”.
Note that the optimal magnification (best magnification) of character A is “8” that the footstep volume is lower when the magnification is “16” than when the magnification is “8”. It is shown that.
In other words, as shown in the graph of FIG. 4A, the character A (sounding body) has a volume that is defined according to the enlargement magnification. When the enlargement magnification is “8”, the maximum volume is obtained. This is because, as shown in FIG. 4B, when the enlargement magnification is “8”, the character A fits in the screen. For this reason, the character A represents that the sound volume is lowered not only when the optimum magnification is less than “8” but also when the character A exceeds “8”.
In this way, the prescribed volume of each sounding body corresponding to the magnification is defined in a table as shown in FIG.
The ROM 12a and the like described above can function as such an object information storage unit 110.

Returning to FIG. 2, the operation receiving unit 120 receives an operation input by the player. For example, a display image scroll instruction or a display image enlargement / reduction instruction is accepted.
Specifically, the direction key or button (A button, B button, or the like) included in the operation key 17 described above is pressed by the player, whereby a display image scroll instruction or enlargement / reduction instruction is accepted. More specifically, a scroll instruction in the up / down direction, the left / right direction, or the oblique direction (simultaneous pressing of adjacent direction keys) is accepted according to the pressed direction key. When the A button is pressed, an enlargement instruction is accepted. Conversely, when the B button is pressed, a reduction instruction is accepted.
In addition, when using the touch panel 20 mentioned above, the image (icon etc.) of a direction key or a button is displayed on the 2nd display part 19 mentioned above, and pressing of those images is detected with the touch panel 20. Thus, a scroll instruction or an enlargement / reduction instruction may be received. When the touch panel 20 is used like a touch pad, a scroll instruction or an enlargement / reduction instruction may be received by sliding (scraping operation) or tapping (tapping operation).
The operation keys 17 and the touch panel 20 described above can function as such an operation receiving unit 120.

The display area management unit 130 manages the display area in the virtual space based on the display image scroll instruction received by the operation reception unit 120.
For example, in the two-dimensional virtual space shown by the whole view ZK as shown in FIG. 5A, the coordinates (x1, y1) of the current display center C and the range coordinates (x2, y2) − ( x3, y3).
The display area HR is obtained according to the enlargement magnification with reference to the display center C. When the operation receiving unit 120 receives a scroll instruction, the display area HR (display center C) moves within the range of the entire view ZK (x0, y0)-(xn, yn) according to the scroll direction. To do.
When the enlargement magnification is “1”, as shown in FIG. 5B, the display area HR is equal to the entire view ZK, and the display center C is set to fixed center coordinates (x1 ′, y1 ′). Is done. In this case, even if the scroll instruction is given, the display area HR (display center C) does not change.
The CPU core 10a, the WRAM 10e, and the like described above can function as such a display area management unit 130.

Returning to FIG. 2, the enlargement ratio management unit 140 manages the enlargement ratio for enlarging and displaying the display area based on the display image enlargement / reduction instruction received by the operation reception unit 120.
As an example, this enlargement magnification is variable in four stages of 1 ×, 2 ×, 4 ×, 8 ×, and 16 ×, and when the operation reception unit 120 receives an enlargement / reduction instruction, Change the magnification. It should be noted that when the minimum magnification is “1 ×”, the enlargement magnification does not change even when the reduction instruction is accepted, and when the maximum magnification is “16 ×”, the enlargement magnification does not change even if the enlargement instruction is accepted. It does not change.
Note that the value of the enlargement magnification and the number of stages are examples, and can be changed as appropriate according to the game type and contents.
The CPU core 10a, the WRAM 10e, and the like described above can function as such an enlargement ratio management unit 140.

The image generation unit 150 generates a display image that projects the virtual space. That is, as shown in FIG. 6A, a display image HG in which the display area HR is projected at an enlargement magnification is generated.
Specifically, as shown in FIG. 6B, when the display area HR is designated in the entire view ZK of the virtual space and the designated magnification is “4”, the image generation unit 150 Then, a display image HG obtained by enlarging and projecting the display region HR four times is generated.
As shown in FIG. 6C, when the display area HR is specified in the entire view ZK of the virtual space and the specified magnification is “16”, the image generation unit 150 displays the display area HR. A display image HG obtained by enlarging and projecting HR by 16 times is generated.
As shown in FIG. 6D, when the entire view ZK is designated as the display area HR and the enlargement magnification is “1”, the image generation unit 150 projects and displays the display area HR as it is. An image HG is generated.
The image processing unit 10b described above can function as such an image generation unit 150.

Returning to FIG. 2, the sound generator specifying unit 160 specifies a sound generator included in the display image generated by the image generating unit 150.
That is, the sound generator identifying unit 160 determines the relationship between the coordinates (range) of the display area managed by the display area management unit 130 and the arrangement position (current position) of the sound generator managed by the object information storage unit 110. All sound generators included in the generated display image are specified.
Further, the sound generator specifying unit 160 specifies a sound generator that does not display all of its own images from the relationship between the bounding box of each specified sound generator and the coordinates of the display area, and displays the sound generator (image). Also find the percentage.
For example, as shown in FIG. 7A, there may be a case where a wall clock KD serving as a sounding body is located at the peripheral edge of the display area HR and a part of the wall clock KD deviates from the display area HR. In this case, the sound generator specifying unit 160 determines that all the images of the wall clock KD are not displayed based on the relationship between the bounding box BB of the wall clock KD and the display area HR, and obtains the display ratio of the wall clock KD. That is, since the portion BU2 obtained by removing the hatched portion BU1 from the bounding box BB shown in FIG. 7B is actually displayed, the proportion of the portion BU2 occupying the entire area of the bounding box BB is calculated and the clock KD is displayed. Find the percentage.
The CPU core 10a and the like described above can function as such a sounding body specifying unit 160.

Returning to FIG. 2, the volume setting unit 170 sets the volume for each sounding body specified by the sounding body specifying unit 160.
That is, the volume setting unit 170 refers to the table as shown in FIG. 3 described above for each specified sounding body, and obtains the sound source of the sounding body (object) and the volume value corresponding to the current magnification. . That is, since the magnification management unit 140 manages the current magnification, the volume value of each sounding body (each sound source) corresponding to the magnification is obtained from the object information storage unit 110.
At this time, when a sounding body that does not display all is specified by the sounding body specifying unit 160, the volume value is adjusted according to the display ratio of the sounding body (image). For example, when the display ratio is 50% (when only half is displayed), the volume setting unit 170 multiplies the volume value obtained from the table by 0.5 (50%). When the display ratio is 80%, the volume setting unit 170 multiplies the volume value obtained from the table by 0.8 (80%).
That is, “display ratio (parting degree) × volume (specified volume) = outing volume”.
Note that the content for adjusting the volume value according to such a display ratio is an example, and can be changed as appropriate according to the situation and content of the game.
The CPU core 10a and the like described above can function as such a volume setting unit 170.

The sound source 180 is composed of a PCM sound source, for example, and stores various sound data that is the basis of the game sound. That is, the sound source 180 stores sound data such as sound effects emitted by each sounding body arranged in the virtual space. For example, the sound source 180 stores various sound data such as a hustle, a footstep and a second hand sound.
The ROM 12a and the sound processing unit 10c described above can function as such a sound source 180.

The output sound control unit 190 reads out necessary sound data from the sound source 180 and outputs a game sound. That is, the output sound control unit 190 reads the sound data of the sound source corresponding to each sounding body specified by the sounding body specifying unit 160, controls each sound volume set by the volume setting unit 170, and outputs it as a game sound To do.
That is, for each specified sounding body, the sound volume is set and reproduced at the same time, thereby synthesizing and outputting the game sound.
The voice processing unit 10c described above can function as such an output sound control unit 190.

(Operation of game sound output device)
FIG. 8 is a flowchart showing the flow of the game sound output process executed in the game sound output device 100 having the above-described configuration. Hereinafter, the operation of the game sound output device 100 will be described with reference to FIG. This game sound output process is started together with a sound search game in which a player searches for a sounding body (object) that emits sound, for example.

First, the game sound output device 100 sets initial values for the display area and the enlargement magnification (step S201).
That is, initial values are set for the display area managed by the display area management unit 130 and the enlargement magnification managed by the enlargement magnification management unit 140. For example, the game sound output device 100 sets “1” as the enlargement magnification, and sets the entire view ZK as it is as the display area HR as shown in FIG. An initial position (x1′y1 ′) is also set for the display center C.

The game sound output device 100 determines whether or not there is a scroll instruction (step S202).
That is, the operation accepting unit 120 determines whether or not a scroll instruction has been accepted, for example, when the direction key is pressed by the player.
If the game sound output apparatus 100 determines that there is no scroll instruction (step S202; No), the process proceeds to step S204 described later.

On the other hand, when it is determined that there is a scroll instruction (step S202; Yes), the game sound output device 100 updates the display area (step S203).
That is, the display area management unit 130 updates the managed display area based on the display image scroll instruction received by the operation reception unit 120.
For example, when the current display area is the display area HR (display center C) shown in FIG. 5A, when receiving the scroll instruction, the display area management unit 130 displays the display area according to the scroll direction. The HR (display center C) is updated by moving within the entire view ZK (x0, y0)-(xn, yn).
When the enlargement magnification is “1”, as shown in FIG. 5B, the display area HR is equal to the entire view ZK, so that even if a scroll instruction is received, the display area HR (display center C) is It does not change.

The game sound output device 100 determines whether or not there is an enlargement / reduction instruction (step S204).
That is, the operation accepting unit 120 determines whether or not an enlargement / reduction instruction has been accepted, for example, when the player presses the A button or the B button.
If the game sound output apparatus 100 determines that there is no enlargement / reduction instruction (step S204; No), the process proceeds to step S206 described later.

On the other hand, when it is determined that there is an enlargement / reduction instruction (step S204; Yes), the game sound output device 100 updates the enlargement magnification (step S205).
That is, the enlargement magnification management unit 140 updates the managed enlargement magnification in response to the display image enlargement / reduction instruction received by the operation reception unit 120.
For example, when the enlargement instruction is received when the current enlargement magnification is “2 ×”, the enlargement magnification management unit 140 updates the enlargement magnification to “4 ×”. When the current enlargement ratio is “16 times” and the reduction instruction is received, the enlargement ratio management unit 140 updates the enlargement ratio to “8 times”.
Even if a reduction instruction is accepted when the minimum magnification is “1 ×”, the enlargement magnification management unit 140 does not change the enlargement magnification, and when the maximum magnification is “16 ×” The magnification is not changed even if an instruction is accepted.

The game sound output device 100 generates a display image (step S206).
That is, the image generation unit 150 generates a display image obtained by projecting the current display area managed by the display area management unit 130 at the current enlargement magnification managed by the enlargement magnification management unit 140.
For example, as illustrated in FIG. 6B described above, when the display area HR is managed and the enlargement magnification is “4”, the image generation unit 150 projects the display area HR by 4 times. A display image HG is generated.
In addition, as shown in FIG. 6C described above, when the display area HR is specified and the enlargement magnification is “16”, the image generation unit 150 projects the display area HR to 16 times. A display image HG is generated.
As shown in FIG. 6D described above, when the entire view ZK is designated as the display area HR and the enlargement magnification is “1”, the image generation unit 150 projects the display area HR as it is. A display image HG is generated.

The game sound output device 100 determines whether or not there is a sounding body in the generated image (step S207).
That is, the sound generator identifying unit 160 determines whether or not a sound generator is included in the image generated by the image generation unit 150.
If the game sound output device 100 determines that there is no sound generator (step S207; No), the process proceeds to step S211 described later.

On the other hand, when it is determined that there is a sounding body (step S207; Yes), the game sound output device 100 identifies each sounding body included in the display image (step S208).
That is, the sound generator specifying unit 160 is included in the generated display image from the relationship between the coordinates of the display area managed by the display area management unit 130 and the arrangement position of the sound generator managed by the object information storage unit 110. Identify all the pronunciations that will be played.
In addition, the sound generator specifying unit 160 specifies a sound generator that does not display all of its own images from the relationship between the bounding box of each specified sound generator and the coordinates of the display area, and obtains the display ratio of the sound generator. .

The game sound output device 100 sets each volume for each sound generator (step S209).
That is, the volume setting unit 170 refers to the table as shown in FIG. 3 described above for each specified sounding body, and obtains the sound source of the sounding body (object) and the volume value corresponding to the current magnification. .
At this time, when a sounding body that is not displayed at all is specified by the sounding body specifying unit 160, the volume value is adjusted according to the display ratio of the sounding body.
For example, as shown in FIG. 7A described above, when a part of the wall clock KD deviates from the display area HR, the volume setting unit 170 sets the volume value according to the display ratio of the wall clock KD. Adjust. As an example, if the display ratio of the wall clock KD is 80%, the volume setting unit 170 adjusts the volume value by multiplying the volume value obtained from the table by 0.8.

The game sound output device 100 outputs a game sound (step S210).
That is, the output sound control unit 190 reads the sound data of the sound source corresponding to each sounding body specified by the sounding body specifying unit 160, controls each sound volume set by the volume setting unit 170, and outputs it as a game sound To do.

Then, the game sound output device 100 determines whether or not the game is over (step S211).
For example, the game ends when the elapsed time of the game has passed or the player has found all the sounding bodies.
If the game sound output device 100 determines that the game has not ended (step S211; No), the process returns to step S202 described above.
On the other hand, when it is determined that the game is over (step S211; Yes), the game sound output device 100 finishes the game sound output process.

A specific state during the game sound output process will be described with reference to FIGS.
First, at the start of the game, the image generation unit 150 generates a display image HG1 with an enlargement magnification of “1” as shown in FIG. 9A, for example. At this time, as shown in FIG. 9B, the volume setting unit 170 sets the hustle to volume “5”, sets the footstep sound of the walking character to volume “1”, and hangs it on the wall. The second hand sound of the clock is set to volume “1”. For this reason, the output sound control unit 190 outputs a game sound obtained by synthesizing these sound sources at respective volumes.
In this case, most of the game sound is a hustle and sound is output so that another sound can be heard faintly, so the player cannot yet identify the sounding body.

When the player issues an enlargement instruction (twice) and an appropriate scroll instruction, the image generation unit 150 generates a display image HG2 having an enlargement magnification of “4 times” as shown in FIG. 9C, for example. To do. At this time, as shown in FIG. 9 (d), the volume setting unit 170 sets the hustle to volume “2”, the footsteps to volume “5”, and the second hand sound of the clock to volume “2”. "Is set. For this reason, the output sound control unit 190 outputs a game sound obtained by synthesizing these sound sources at respective volumes.
In this case, the proportion of footsteps in the game sound increases and the player can recognize the footsteps. Since the walking character can be seen from the display image HG2, it can be determined that the character is producing footsteps.

Further, when the player gives an enlargement instruction (twice) and an appropriate scroll instruction, the image generation unit 150 generates a display image HG3 with an enlargement magnification of “16 times” as shown in FIG. To do. At this time, as shown in FIG. 9 (f), the volume setting unit 170 sets the hustle to volume “1”, the footsteps to volume “2”, and the second hand sound of the clock to volume “5”. "Is set. For this reason, the output sound control unit 190 outputs a game sound obtained by synthesizing these sound sources at respective volumes.
In this case, the ratio of the second hand sound to the game sound increases, and the player can recognize the second hand sound. Since the clock can be seen from the display image HG3, it can be determined that the clock is generating the second hand sound.

As described above, the volume corresponding to each of the plurality of magnifications is defined for each sounding body, and the volume of each sounding body is set based on the relationship with the current magnification of the display image.
For this reason, the game sound emitted from the sounding body can be output according to the display state without performing complicated calculations.

  As a result, the game sound emitted from the virtual sounding body can be appropriately output according to the display status.

(Other embodiments)
In the above-described embodiment, the case where the enlargement magnification is changed stepwise has been described, but the present invention can be appropriately applied even when the enlargement magnification is changed linearly.
For example, a mathematical expression (relational expression) that defines the relationship between the magnification and the volume is stored according to each sounding body, and even if the magnification by the zoom function changes linearly, the corresponding volume Is calculated linearly.
In other words, instead of the table as shown in FIG. 3 described above, by storing the mathematical expression defining the relationship as shown in FIG. 4A, even when the enlargement magnification in the display image changes linearly, The volume of the corresponding sounding body can be obtained and output as a game sound.

  As described above, according to the present invention, it is possible to provide a game sound output device, a game sound control method, and a program that can appropriately output a game sound emitted from a virtual sounding body in accordance with a display situation. can do.

DESCRIPTION OF SYMBOLS 1 Game device 10 Processing control part 11 Connector 12 Cartridge 13 Wireless communication part 14 Communication controller 15 Sound amplifier 16 Speaker 17 Operation key 18 1st display part 19 2nd display part 20 Touch panel 100 Game sound output device 110 Object information storage part DESCRIPTION OF SYMBOLS 120 Operation reception part 130 Display area management part 140 Enlargement magnification management part 150 Image generation part 160 Sound body identification part 170 Volume setting part 180 Sound source 190 Output sound control part

Claims (6)

A game sound output device that outputs a sound emitted from a virtual sounding body included in a display image as a game sound,
An operation receiving unit for receiving an instruction to enlarge or reduce the display image;
An image generation unit for generating a display image of an enlargement magnification instructed by the received enlargement instruction or the reduction instruction;
A volume setting unit that calculates a volume based on the sounding body included in the generated display image and the specified magnification, and sets the calculated volume in the sounding body;
An output sound control unit that outputs a game sound based on the set volume of the sounding body,
A game sound output device. The game sound output device according to claim 1,
Information that prescribes the volume of the sounding body in advance, the volume according to the enlargement magnification of the display image is prescribed respectively, and the prescription that the enlargement magnification that becomes the maximum volume differs depending on the sounding body A storage unit for storing volume information;
The volume setting unit calculates a volume corresponding to the magnification for the sounding body included in the generated display image based on the stored prescribed volume information, and sets the calculated volume to the sounding body. To
A game sound output device. The game sound output device according to claim 1 or 2,
The operation receiving unit further receives a scroll instruction for the display image,
The image generation unit generates a display image corresponding to the received scroll instruction;
A game sound output device. The game sound output device according to any one of claims 1 to 3,
The volume setting unit further adjusts the volume according to a display ratio of the sounding body when all the sounding bodies are not displayed in the display image;
A game sound output device. Game sound control in a game sound output device that has an operation reception unit, an image generation unit, a volume setting unit, and an output sound control unit, and outputs a sound emitted from a virtual sounding body included in the display image as a game sound A method,
An operation receiving step for receiving an instruction to enlarge or reduce the display image, which is performed by the operation receiving unit;
An image generation step for generating a display image of the enlargement magnification instructed by the received enlargement instruction or the reduction instruction, which is performed by the image generation unit;
A volume setting step for calculating a volume based on the sounding body included in the generated display image and the specified magnification, and setting the calculated volume in the sounding body, performed by the volume setting unit;
An output sound control step for outputting a game sound based on the set volume of the sounding body performed by the output sound control unit,
The game sound control method characterized by the above-mentioned. A computer that outputs the sound emitted from the sound generator included in the display image as a game sound,
An operation receiving unit for receiving an instruction to enlarge or reduce the display image;
An image generation unit for generating a display image of an enlargement magnification instructed by the received enlargement instruction or the reduction instruction;
A volume setting unit that calculates a volume based on the sounding body included in the generated display image and the specified magnification, and sets the calculated volume in the sounding body;
An output sound control unit that outputs a game sound based on the volume of the set sounding body;
A program characterized by functioning as

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