JP2004294844A - Device for outputting effect sound, method for generating effect sound, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To output an effect sound which is real while deterring storage capacity from increasing. <P>SOLUTION: An acyclic waveform storage part 203 previously stores waveform data of a formant part which is a portion of the whole waveform prescribing the effect sound. A cyclic waveform generation part 204 generates waveform data of a resonance part which is a portion of the whole waveform according to the stored waveform data of the formant part. Then a whole waveform composition part 205 composes the whole waveform of the stored waveform data of the formant part and the generated waveform data of the resonance part. A natural frequency acquisition part 206, on the other hand, acquires a natural frequency set to an object for which the effect sound is generated. Then an output sound control part 207 adjusts the frequency of the effect sound based upon the composed whole waveform according to the acquired natural frequency and outputs the effect sound. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sound effect output device, a sound effect generation method, and a program.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, arcade and home game machines have been widely used. In such a game device, sound effects are output in various situations in order to enhance the power and realism of the game.
For example, in a game in which a user (player) can operate a character arranged in a virtual space, a predetermined sound effect is output in accordance with the motion of the character.
[0003]
As an example, when a character having a “sword” hits (hits) “rock” in accordance with a user operation, the game device outputs a sound effect such as “kakien” (metallic sound). In addition, when the character hits various objects (metal objects, wood, minerals, and the like) appearing in the game, a sound effect corresponding to the type of the object is output.
A game device that outputs a sound effect generally stores sampled waveform data in an internal memory or the like according to the type of an object. Then, by reproducing the target waveform data, a sound effect corresponding to the type of the object is output.
[0004]
[Problems to be solved by the invention]
In a conventional game device, a predetermined sound effect is output, but as described above, at present, a sound effect is output according to the type of the object.
For example, if the character has hit a metal object, the same metal sound is output as a sound effect.
As an example, the same sound effect is output regardless of whether a "copper shield" is hit or a "steel shield" is hit. That is, even if the material (metal material in this case) set for the object is different, the same metal sound is output as the sound effect.
[0005]
When the character strikes an object of a type different from the metal object, a sound effect different from the metal sound is output. For example, when the character hits a wood object, a sound of the tree is output as a sound effect.
Nevertheless, the same sound effect is output whether a large "wood board" is hit or a small "wood board" is hit. That is, the same sound effect is output even if the size (shape) set for the object is different.
[0006]
For this reason, there is no reality in the sound effect and the impact on the user is small, so that many users feel the game itself monotonously.
[0007]
It is also conceivable to prepare waveform data corresponding to objects having different materials and sizes, but this is not very practical because the required storage capacity increases accordingly.
[0008]
The present invention has been made in order to solve such problems, and while suppressing an increase in storage capacity, a sound effect output device capable of outputting a sound effect having a reality, a sound effect generation method, and It is an object of the present invention to provide a program for realizing these by a computer.
[0009]
[Means for Solving the Problems]
To achieve the above object, the following invention is disclosed in accordance with the principle of the present invention.
[0010]
A sound effect output device according to a first aspect of the present invention includes an object storage unit, a waveform storage unit, a setting value acquisition unit, and an output sound control unit, and is configured as follows.
[0011]
First, the object storage unit stores an object to which a sound effect is to be emitted and a set value (for example, a natural frequency) set for the object.
Further, the waveform storage unit stores a waveform that defines a sound effect emitted by the object.
On the other hand, the set value acquisition unit acquires a set value set for the object that emits a sound effect due to a predetermined operation (for example, a beating or a collision),
Then, the output sound control unit adjusts and outputs the sound effect based on the stored waveform in accordance with the acquired set value. For example, the pitch is adjusted according to the natural frequency.
[0012]
By applying the present invention, an increase in storage capacity can be suppressed and a realistic sound effect can be output.
[0013]
Further, the above-mentioned sound effect output device further includes a waveform generation unit, and the waveform storage unit stores a part of the entire waveform defining the sound effect (for example, a waveform of a formant unit), The waveform generating unit generates an entire waveform from the stored partial waveforms (for example, generates a waveform of a resonance unit to generate an entire waveform), and the output sound control unit generates the entire waveform. The sound effect based on the waveform may be adjusted and output according to the acquired set value.
Note that the formant part indicates the head part of the sound effect. For example, in the case of the sound effect “Kaki”, the part corresponding to the first “Kaki” is the formant part. Further, the resonating part indicates a tail part of the sound effect. For example, a portion corresponding to the remaining “in” excluding the formant portion from the sound effect of “kaki” is the resonance portion.
[0014]
In this case, since the waveform generation unit generates the entire waveform from a part of the waveform, the waveform storage unit does not need to store the entire waveform, but only the part of the waveform. Thus, the required storage capacity can be extremely reduced.
[0015]
Further, the object storage unit stores an object in which a plurality of positions at which sound effects should be emitted and a plurality of set values corresponding to each position of the object, and the set value obtaining unit is configured to store a set value based on a predetermined operation. Then, the setting value set at the position where the sound effect of the object is emitted may be acquired.
In this case, even with the same object, sound effects with different timbres can be output depending on the difference between the hit position and the collision position.
[0016]
A sound effect output device according to a second aspect of the present invention includes an object storage unit, an aperiodic waveform storage unit, a periodic waveform generation unit, a natural frequency acquisition unit, and an output sound control unit. It is configured as follows.
[0017]
First, the object storage unit stores an object to which a sound effect is to be emitted and a set value set for the object.
The aperiodic waveform storage unit stores in advance an aperiodic waveform (for example, a waveform of a formant unit) which is a part of the entire waveform defining the sound effect. Note that the aperiodic waveform is a waveform having no periodicity generated at the head of the sound effect. For example, in the case of the sound effect “Kaki”, a portion corresponding to the first “Kaki” has an aperiodic waveform.
Then, the periodic waveform generation unit generates a periodic waveform (for example, a waveform of a resonance unit) that becomes a part of the entire waveform based on the stored non-periodic waveform. Note that the periodic waveform is a waveform having a periodicity that occurs at the tail of the sound effect and that gradually decreases. For example, a portion corresponding to the remaining "in" except for the non-periodic waveform (formant portion) from the sound effect of "kaki in" becomes the periodic waveform.
[0018]
The natural frequency obtaining unit obtains a natural frequency based on a setting value set for the object that emits a sound effect due to a predetermined operation.
The output sound control unit adjusts the frequency of the stored non-periodic waveform and the sound effect obtained by synthesizing the generated periodic waveform according to the acquired natural frequency, and outputs the sound. I do.
[0019]
By applying the present invention, it is possible to suppress an increase in storage capacity and to output a realistic sound effect according to the natural frequency of the object.
[0020]
The above-described sound effect output device further includes an entire waveform generation unit, the object storage unit stores set values in which the size and rigidity of the object are set, and the aperiodic waveform storage unit stores The waveform of the formant section is stored in advance, and the periodic waveform generation section generates a waveform of the resonance section in the entire waveform based on the stored waveform of the formant section, and the entire waveform generation section includes: A whole waveform is generated from the stored waveform of the formant part and the generated waveform of the resonance part, and the output sound control part obtains the sound effect based on the generated whole waveform. The pitch may be adjusted according to the natural frequency and output.
[0021]
In this case, since the periodic waveform generation unit generates the waveform of the resonance unit from the waveform of the formant unit, the aperiodic waveform storage unit does not need to store the entire waveform, but only needs to store the waveform of the formant unit. Thus, the required storage capacity can be extremely reduced.
[0022]
Further, the object storage unit stores an object in which a plurality of positions at which sound effects should be emitted and a plurality of set values corresponding to each position of the object, and the natural frequency acquisition unit performs predetermined operation. The natural frequency may be acquired based on the set value set at the position where the sound effect of the object is generated.
In this case, even with the same object, sound effects with different timbres can be output depending on the difference between the hit position and the collision position.
[0023]
A sound effect generating method according to a third aspect of the present invention includes an object storage unit (which stores an object to which a sound effect is to be emitted and a set value set for the object); (A waveform defining the sound effect generated by the sound source) is provided, comprising a set value obtaining step and an output sound control step, and configured as follows.
[0024]
First, in the set value obtaining step, a set value (for example, a natural frequency) set for the object that emits a sound effect due to a predetermined operation is obtained.
Then, in the output sound control step, the sound effect synthesized based on the stored waveform is adjusted according to the acquired set value and output.
[0025]
By applying the present invention, it is possible to suppress an increase in storage capacity and to output a realistic sound effect according to the natural frequency of the object.
[0026]
A sound effect generating method according to a fourth aspect of the present invention includes an object storage unit (which stores an object to which a sound effect is to be emitted and a set value set for the object) and an aperiodic waveform storage unit ( A non-periodic waveform that is a part of the entire waveform defining the sound effect is stored in advance), a periodic waveform generating step, a natural frequency obtaining step, an output sound controlling step, And is configured as follows.
[0027]
First, in the periodic waveform generation step, a periodic waveform (for example, a waveform of a resonance unit) that becomes a part of the entire waveform is generated based on the stored non-periodic waveform.
In the natural frequency obtaining step, a natural frequency is obtained based on a set value set for the object that emits a sound effect due to a predetermined operation.
Then, in the output sound control step, while adjusting the frequency of the stored aperiodic waveform and the sound effect synthesized based on the generated periodic waveform in accordance with the acquired natural frequency, ,Output.
[0028]
By applying the present invention, it is possible to suppress an increase in storage capacity and to output a realistic sound effect according to the natural frequency of the object.
[0029]
A program according to a fifth aspect of the present invention is configured to cause a computer (including a game device) to function as the above-described sound effect output device.
[0030]
This program can be recorded on a computer-readable information recording medium such as a compact disk, a flexible disk, a hard disk, a magneto-optical disk, a digital video disk, a magnetic tape, and a semiconductor memory.
[0031]
The above program can be distributed and sold via a computer communication network independently of a computer on which the program is executed. The information recording medium can be distributed and sold independently of the computer.
[0032]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described. Hereinafter, in order to facilitate understanding, an embodiment in which the present invention is applied to a game device will be described. However, the present invention can be similarly applied to information processing devices such as various computers, PDAs, and mobile phones. it can. That is, the embodiments described below are for explanation, and do not limit the scope of the present invention. Therefore, those skilled in the art can adopt embodiments in which each of these elements or all elements are replaced with equivalents, but these embodiments are also included in the scope of the present invention.
[0033]
(Embodiment)
FIG. 1 is a schematic diagram showing a schematic configuration of a typical game device on which a sound effect output device according to an embodiment of the present invention is realized. Hereinafter, description will be made with reference to this figure.
[0034]
The game device 100 includes a CPU (Central Processing Unit) 101, a ROM (Read Only Memory) 102, a RAM (Random Access Memory) 103, an interface 104, a controller 105, an external memory 106, and a DVD (Digital Versatile Disk). ) -ROM drive 107, image processing unit 108, audio processing unit 109, and NIC (Network Interface Card) 110.
[0035]
A DVD-ROM storing a game program and data is mounted on the DVD-ROM drive 107 and the game apparatus 100 is powered on to execute the program. Is realized.
[0036]
The CPU 101 controls the overall operation of the game device 100, and is connected to each component to exchange control signals and data.
[0037]
The IPL (Initial Program Loader) executed immediately after the power is turned on is recorded in the ROM 102, and by executing this, the program recorded on the DVD-ROM is read out to the RAM 103 and the execution by the CPU 101 is started. You. The ROM 102 stores an operating system program and various data necessary for controlling the operation of the entire game apparatus 100.
[0038]
The RAM 103 is for temporarily storing data and programs, and holds programs and data read from the DVD-ROM, and other data necessary for game progress and chat communication.
[0039]
The controller 105 connected via the interface 104 receives an operation input performed by the user when executing the game.
[0040]
In the external memory 106 detachably connected via the interface 104, data indicating the progress of the game, log (recording) data of chat communication, and the like are rewritably stored. The user can appropriately record these data in the external memory 106 by inputting an instruction via the controller 105.
[0041]
The DVD-ROM mounted on the DVD-ROM drive 107 stores a program for realizing the game, and image data and audio data accompanying the game. Under the control of the CPU 101, the DVD-ROM drive 107 performs a read process on the DVD-ROM mounted thereon to read necessary programs and data, and these are temporarily stored in the RAM 103 or the like.
[0042]
The image processing unit 108 processes the data read from the DVD-ROM by the CPU 101 or an image processing processor (not shown) included in the image processing unit 108, and then processes the data by using a frame memory (not illustrated) included in the image processing unit 108. (Not shown). The image information recorded in the frame memory is converted into a video signal at a predetermined synchronization timing and output to a monitor (not shown) connected to the image processing unit 108. Thereby, various types of image display can be performed.
[0043]
Note that the image arithmetic processor can perform high-speed superimposition operations of two-dimensional images, transparency operations such as α blending, and various saturation operations.
Also, the polygon information that is arranged in the virtual three-dimensional space and to which various texture information is added is rendered by the Z-buffer method, and a rendering image in which the polygon arranged in the virtual three-dimensional space is overlooked from a predetermined viewpoint position is obtained. High-speed execution of the obtained operation is also possible.
[0044]
The audio processing unit 109 converts the audio data read from the DVD-ROM into an analog audio signal, and outputs the analog audio signal from a speaker (not shown) connected thereto. Further, under the control of the CPU 101, the CPU 101 generates sound effects and music data to be generated during the progress of the game, and outputs corresponding sounds from the speakers.
[0045]
The NIC 110 is for connecting the game apparatus 100 to a computer communication network (not shown) such as the Internet, and conforms to the 10BASE-T / 100BASE-T standard used when configuring a LAN (Local Area Network). In accordance with the above, an analog modem for connecting to the Internet using a telephone line, an integrated services digital network (ISDN) modem, an Asymmetric Digital Subscriber Line Modem (ADSL) modem, and a modem for connecting to the Internet using a cable television line. It is composed of a cable modem and the like, and an interface (not shown) that mediates between these and the CPU 101.
[0046]
In addition, the game device 100 uses a large-capacity external storage device such as a hard disk to perform the same functions as a ROM 102, a RAM 103, an external memory 106, and a DVD-ROM mounted on a DVD-ROM drive 107. You may comprise.
Further, a form in which a keyboard for receiving a character string editing input from a user, a mouse for receiving various position designations and selection inputs, and the like may be employed. Further, a general-purpose personal computer can be used instead of the game device 100 of the present embodiment.
[0047]
(Outline configuration of sound effect output device)
FIG. 2 is a schematic diagram illustrating a schematic configuration of the sound effect output device according to the present embodiment. Hereinafter, description will be made with reference to this figure.
[0048]
The sound effect output device 200 includes a sounding body identification unit 201, an object information storage unit 202, an aperiodic waveform storage unit 203, a periodic waveform generation unit 204, an overall waveform synthesis unit 205, a natural frequency acquisition unit 206, , An output sound control unit 207.
In addition, the sound effect output device 200 includes an image generation unit, an operation input reception unit, and the like (not shown) in addition to the above. Then, the image generation unit generates an image of a virtual space in which a character or an object (object) appears, and the operation input reception unit receives an operation instruction for the character input by the user.
[0049]
First, when it becomes necessary to output a sound effect based on a predetermined operation, the sounding body specifying unit 201 specifies a sounding body (a target object) to which a sound is to be emitted.
For example, when a character holding an arbitrary object beats (hits) another arbitrary object in accordance with a motion instruction from a user, it is necessary to emit a sound effect. Then, the sounding body specifying unit 201 specifies an object that becomes a sounding body in this case.
As an example, when a character holding an object “club” in a hand strikes another object “copper shield”, the sounding body specifying unit 201 specifies “copper shield” as a sounding body. Further, when the character hits "rock" with a "steel sword", the "steel sword" is specified as a sounding body. Furthermore, when the character beats the “copper sword” with the “steel sword”, the “steel sword” and the “copper sword” are specified as sounding bodies.
Then, the CPU 101 can function as such a sounding body specifying unit 201.
[0050]
The object information storage unit 202 stores information (object information) on various objects including objects that can be sounding bodies.
For example, the object information storage unit 202 stores object information as shown in FIG. The object information includes, for example, image data (such as polygons), size data, and rigidity data (such as an elastic modulus set according to the material of the object).
Note that the size data and the rigidity data are examples of data used to determine a natural frequency according to the size (shape) and the material of the object. The present invention is not limited to these and is arbitrary.
The size (length or the like) of the object may be obtained from the image data (bounding box or the like) without having the size data.
The DVD-ROM mounted on the DVD-ROM drive 107 and the external memory 106 can function as such an object information storage unit 202. Note that, in the case where necessary object information from a DVD-ROM or the like is transferred to the RAM 103 as needed to improve the processing speed, the RAM 103 can function as such an object information storage unit 202. .
[0051]
The non-periodic waveform storage unit 203 stores in advance a non-periodic waveform (attack waveform) that is a part of a body waveform that defines a sound effect.
For example, the aperiodic waveform storage unit 203 stores waveform data of a formant part of a sound effect as shown in FIG.
Meanwhile, the entire waveform defining the sound effect can be divided into a formant part and a resonance part (resonance part), as shown in FIG. For example, in the case of the sound effect “Kaki”, the part corresponding to the first “Kaki” is the formant part, and the remaining part corresponding to “Kii” is the resonance part.
That is, the formant portion is a non-periodic waveform generated at the beginning of the sound effect, while the resonance portion is a gradually attenuated periodic waveform (continuous waveform, loop waveform) generated at the tail of the sound effect.
Then, as shown in FIG. 5, the formant waveform storage unit 201 stores various sounding objects (for example, “wood shield”, “copper shield”, “copper sword”, “steel sword”...). Corresponding to (1), waveform data of a plurality of formant sections is stored in advance.
Note that the DVD-ROM, the external memory 106, or the RAM 103 mounted on the DVD-ROM drive 107 can function as such an aperiodic waveform storage unit 203.
[0052]
The periodic waveform generation unit 204 generates a periodic waveform that becomes a part of the entire waveform that defines the sound effect, based on the aperiodic waveform stored in the aperiodic waveform storage unit 203.
For example, the periodic waveform generation unit 204 generates the waveform data of the resonance unit as shown in FIG. 6A from the waveform data of the formant part corresponding to the sounding body specified by the sounding body identification unit 201.
As an example, as shown in FIG. 6B, the periodic waveform generation unit 204 generates waveform data of the resonance unit by sequentially attenuating the terminal waveforms of the formant unit while sequentially attenuating them.
In addition, the waveform data of the resonance unit may be generated by performing Fourier transform on the waveform data of the formant unit.
Then, the CPU 101 can function as such a periodic waveform generation unit 204.
[0053]
The whole waveform synthesizing unit 205 synthesizes the whole waveform defining the sound effect from the aperiodic waveform stored in the aperiodic waveform storage unit 203 and the periodic waveform generated by the periodic waveform generating unit 204.
For example, the entire waveform synthesizing unit 205 combines the waveform data of the formant part shown in FIG. 4A and the waveform data of the resonance part shown in FIG. 6A to produce a sound effect shown in FIG. Is synthesized.
As an example, when “copper shield” is specified as a sounding body, the entire waveform synthesizing unit 205 stores the “copper shield” of FIG. 7A stored in the aperiodic waveform storage unit 203. The waveform data of the formant section and the waveform data of the resonance section shown in FIG. 7B generated by the periodic waveform generation section 204 are combined, and as shown in FIG. Synthesizes the entire sound effect waveform data.
Then, the whole waveform synthesizing unit 205 supplies the synthesized whole waveform data to the output sound control unit 207.
Note that the CPU 101 can function as such an overall waveform synthesizing unit 205.
[0054]
The natural frequency acquisition unit 206 acquires a natural frequency according to the size (shape) of the sounding object and the material.
For example, the natural frequency obtaining unit 206 obtains size data and rigidity data defined for the sounding body object from the object information storage unit 202, and calculates a natural frequency according to a predetermined arithmetic expression.
As an example, when “wood shield” is specified as a sounding body, the natural frequency acquisition unit 206 acquires size data (size and the like) and rigidity data of “wood shield”, and Obtain the natural frequency corresponding to the size of the shield. Similarly, when the “steel sword” is specified as a sounding body, the size data (length, etc.) and rigidity data of the “steel sword” are obtained, and the length of the “steel sword” is obtained. Obtain the natural frequency corresponding to.
Then, the natural frequency acquisition unit 206 supplies the acquired value of the natural frequency to the output sound control unit 207.
Note that the CPU 101 can function as such a natural frequency acquisition unit 206.
[0055]
The output sound control unit 207 outputs a sound effect based on the synthesized whole waveform while adjusting the frequency according to the natural frequency.
For example, the sound effect based on the entire waveform shown in FIG. 4B synthesized by the entire waveform synthesis unit 205 is adjusted in pitch (pitch) according to the natural frequency supplied from the natural frequency acquisition unit 206. And output.
As an example, when “wood shield” is specified as a sounding body, the output sound control unit 207 outputs a sound effect based on the synthesized overall waveform data of “wood shield”. The pitch is adjusted according to the natural frequency. That is, when the size of the “tree shield” is large, a sound effect adjusted to a high sound is output, and when the size is small, a sound effect adjusted to a low sound is output.
Note that the audio processing unit 109 can function as such an output sound control unit 207.
[0056]
FIG. 8 is a flowchart illustrating a flow of the sound effect generation process performed in the sound effect output device 200. Hereinafter, description will be made with reference to this figure. Note that this sound effect generation processing is started with the progress of the game, for example, when the game in which the character moves in accordance with the operation of the user is executed.
[0057]
First, the sounding body specifying unit 201 specifies an object to be a sounding body (step S301).
As an example, when a character holding an object of “copper sword” hits a “rock” according to an operation instruction from a user according to an operation instruction from a user, the sounding body identification unit 201 sets the sounding body identification unit 201 to a sounding body. As "copper sword".
[0058]
The periodic waveform generation unit 204 generates a periodic waveform based on the non-periodic waveform of the object specified as the sounding body (Step S302).
For example, the periodic waveform generation unit 204 generates the waveform data of the resonance unit from the waveform data of the formant corresponding to the specified “copper sword”.
[0059]
The overall waveform synthesizing unit 205 synthesizes an overall waveform that defines a sound effect from the non-periodic waveform of the object specified as the sounding body and the generated periodic waveform (step S303).
For example, the waveform data of the formant section corresponding to the specified “copper sword” and the generated waveform data of the resonance section are combined to synthesize the entire waveform data of the sound effect of “copper sword”.
[0060]
The natural frequency acquisition unit 206 acquires a natural frequency corresponding to the size of the object specified as the sounding body and the material (step S304).
For example, the size data and rigidity data set for the specified “copper sword” are obtained from the object information storage unit 202, and the natural frequency corresponding to the size of the “copper sword” is calculated.
[0061]
The output sound control unit 207 adjusts the frequency according to the natural frequency and outputs the sound effect based on the synthesized whole waveform (step S305).
For example, a sound effect based on the entire waveform of the “copper sword” synthesized in step S303 is output while adjusting the pitch (pitch) according to the calculated natural frequency.
[0062]
With such a sound effect generation process, for example, when a character holding a “copper sword” hits “rock”, the pitch (pitch) is adjusted according to the natural frequency of the “copper sword” The output sound effect is output. Further, when the character holding the “steel sword” hits “rock”, a sound effect whose pitch has been adjusted according to the natural frequency of the “steel sword” is output.
That is, if the materials (in this case, “copper” and “steel”) set for the object are different, different sound effects will be output.
[0063]
Also, for example, when a “wood board” having a different size is hit, the natural frequency changes according to the size of the same “wood board”. The adjusted sound effect is output.
That is, if the sizes set for the objects are different, different sound effects are output.
[0064]
Further, since the aperiodic waveform storage unit 203 stores only the waveform data of the formant part which is a part of the entire waveform defining the sound effect, the storage capacity of the waveform data can be reduced.
[0065]
As described above, in the present embodiment, it is possible to suppress an increase in the storage capacity and output a realistic sound effect.
[0066]
(Other embodiments)
In the above embodiment, the entire waveform synthesizing unit 205 combines the waveform data of the formant unit and the waveform data of the resonance unit to synthesize the entire waveform data, and the output sound control unit 207 performs the synthesis based on the synthesized entire waveform. The case where the frequency of the sound effect is adjusted according to the natural frequency and output is described.
However, the output sound control section 207 may input the waveform data of the formant section and the waveform data of the resonance section, respectively, and output a synthesized sound effect.
[0067]
For example, the output sound control unit 207 outputs a sound effect based on the waveform data of the formant part first, and fades out the volume at the end of the waveform data. By starting the output of the sound effect based on the waveform data of the resonance section in parallel with the fade-out, the synthesized sound effect can be output.
Further, the generated waveform data of the resonance section may be a periodic waveform having no attenuation, instead of a periodic waveform which is sequentially attenuated. Then, when the output sound control unit 207 outputs a sound effect based on the waveform data without attenuation, the sound volume may be sequentially faded out.
[0068]
Further, in the above-described embodiment, the case has been described where the natural frequency corresponding to the size (shape) and the material of the object is obtained using the size data and the rigidity data. The natural frequency may be obtained by further using data or the like.
Instead of obtaining the natural frequency, the value of the natural frequency may be included in the object information in advance.
[0069]
Further, in consideration of the case where the object is damaged or deformed by beating, a corresponding sound effect may be output.
For example, when a “wood board” is broken by beating, a sound effect of the cracked sound may be output.
[0070]
In the above embodiment, the case where the non-periodic waveform is stored in advance and the periodic waveform is generated has been described. However, the periodic waveform may not be generated and may be stored together with the non-periodic waveform. Then, modulation parameters such as hardness and length (shape) of the object may be set at predetermined positions such as the bounding box of the object and the collision data.
For example, as shown in FIG. 9A, different modulation parameters are set at a plurality of positions in the bounding box of the object Ob1. Then, as shown in FIG. 9B, when the object Ob2 collides with the position L1, the modulation parameter at the collision position L1 is obtained.
Then, by using this modulation parameter to modulate the periodic waveform and reproduce the periodic waveform following the non-periodic waveform, the timbre of the object can be dynamically changed.
Further, as shown in FIG. 9C, when the object Ob2 collides with the position L2, a modulation parameter at the collision position L2 is obtained, and a sound effect subjected to different modulation is output.
That is, even for the same object, different timbres can be output depending on the difference in the beating position, the collision position, and the like.
[0071]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a sound effect output device, a sound effect generation method, and a program for realizing these by a computer while suppressing an increase in storage capacity and outputting a realistic sound effect. can do.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a schematic configuration of a typical game device on which a sound effect output device according to an embodiment of the present invention is realized.
FIG. 2 is a schematic diagram illustrating a schematic configuration of a sound effect output device according to the embodiment.
FIG. 3 is a schematic diagram illustrating an example of an object stored in an object information storage unit.
4A is a schematic diagram illustrating an example of waveform data of a formant section stored in an aperiodic waveform storage section of the sound effect output device, and FIG. 4B is an example of an entire waveform defining a sound effect; FIG.
FIG. 5 is a schematic diagram illustrating an example of waveform data of a formant section stored in the aperiodic waveform storage section in association with an object;
6A is a schematic diagram illustrating an example of waveform data of a resonance unit generated by a periodic waveform generation unit of the sound effect output device, and FIG. 6B is a diagram illustrating waveform data generated by the resonance unit; It is a schematic diagram for demonstrating a situation.
FIGS. 7A and 7B are schematic diagrams for explaining how the entire waveform is synthesized, where FIG. 7A shows waveform data of a formant portion, FIG. 7B shows waveform data of a resonance portion, and FIG. This is the entire waveform.
FIG. 8 is a flowchart illustrating a control flow of a sound effect generation process executed in the sound effect output device.
9A is a schematic diagram illustrating a state in which a plurality of modulation parameters are set in a bounding box of an object, and FIGS. 9B and 9C are schematic diagrams illustrating a collision between objects. FIG.
[Explanation of symbols]
100 game device
101 CPU
102 ROM
103 RAM
104 interface
105 controller
106 External memory
107 DVD-ROM drive
108 Image processing unit
109 audio processing unit
110 NIC
200 sound effect output device
201 Pronunciation body identification unit
202 Object information storage unit
203 Aperiodic waveform storage
204 Periodic waveform generator
205 Whole waveform synthesis unit
206 Natural frequency acquisition unit
207 Output sound control unit

Claims (10)

An object sound output device including an object storage unit, a waveform storage unit, a set value acquisition unit, and an output sound control unit,
The object storage unit stores an object to which a sound effect is to be emitted, and a set value set for the object,
The waveform storage unit stores a waveform that defines a sound effect emitted by the object,
The setting value acquisition unit acquires a setting value set for the object that emits a sound effect due to a predetermined operation,
The output sound control unit adjusts and outputs a sound effect based on the stored waveform in accordance with the acquired set value. The sound effect output device according to claim 1, further comprising a waveform generation unit,
The waveform storage unit stores a part of the entire waveform defining the sound effect,
The waveform generation unit generates an entire waveform from the stored part of the waveform,
The output sound control unit adjusts and outputs a sound effect based on the generated overall waveform according to the acquired set value. The sound effect output device according to claim 1 or 2,
The object storage unit stores an object in which a plurality of positions at which sound effects are to be emitted, and a plurality of setting values corresponding to each position of the object,
The setting value acquisition unit acquires a setting value set at a position at which a sound effect of the object is emitted due to a predetermined operation,
Characterized by that. An object sound storage device, an aperiodic waveform storage unit, a periodic waveform generation unit, a natural frequency acquisition unit, and an output sound control unit, comprising a sound effect output device,
The object storage unit stores an object to which a sound effect is to be emitted, and a set value set for the object,
The aperiodic waveform storage unit previously stores an aperiodic waveform that is a part of the entire waveform that defines the sound effect,
The periodic waveform generating unit generates a periodic waveform that is a part of the entire waveform based on the stored aperiodic waveform,
The natural frequency obtaining unit obtains a natural frequency based on a setting value set for the object that emits a sound effect due to a predetermined operation,
The output sound control unit, the stored aperiodic waveform, and a sound effect obtained by synthesizing the generated periodic waveform, while adjusting the frequency according to the acquired natural frequency, Features of outputting. 5. The sound effect output device according to claim 4, further comprising an entire waveform generation unit,
The object storage unit stores a set value in which the size and rigidity of the object are set,
The aperiodic waveform storage unit stores in advance the waveform of the formant part in the entire waveform,
The periodic waveform generator, based on the stored waveform of the formant unit, generates a waveform of the resonance unit in the entire waveform,
The overall waveform generating unit generates an overall waveform from the stored waveform of the formant unit, and the generated waveform of the resonance unit,
The output sound control section adjusts a pitch according to the acquired natural frequency and outputs the sound effect based on the generated entire waveform. The sound effect output device according to claim 4 or 5,
The object storage unit stores an object in which a plurality of positions at which sound effects are to be emitted, and a plurality of setting values corresponding to each position of the object,
The natural frequency obtaining unit obtains a natural frequency based on a set value set at a position at which a sound effect of the object is generated due to a predetermined operation. An effect sound generation method using an object storage unit and a waveform storage unit,
The object storage unit stores an object to which a sound effect is to be emitted, and a set value set for the object, and the waveform storage unit stores a waveform that defines a sound effect emitted by the object,
A set value acquisition step and an output sound control step,
In the setting value obtaining step, a setting value set for the object that emits a sound effect due to a predetermined operation is obtained,
In the output sound control step, a sound effect based on the stored waveform is adjusted and output according to the acquired set value. An object sound generation method using an object storage unit and an aperiodic waveform storage unit,
The object storage unit stores an object to which a sound effect is to be emitted, and a set value set for the object, and the non-periodic waveform storage unit stores a non-periodic waveform that defines a part of the entire waveform defining the sound effect. Store the periodic waveform in advance,
A periodic waveform generation step, a natural frequency acquisition step, and an output sound control step,
In the periodic waveform generation step, based on the stored non-periodic waveform, to generate a periodic waveform that becomes a part of the entire waveform,
In the natural frequency obtaining step, based on a set value set for the object that emits a sound effect due to a predetermined operation, obtain a natural frequency,
In the output sound control step, the stored non-periodic waveform, and a sound effect obtained by synthesizing the generated periodic waveform, while adjusting the frequency according to the obtained natural frequency, A method characterized by outputting. A program that causes the computer to function as an object storage unit, a waveform storage unit, a setting value acquisition unit, and an output sound control unit,
The object storage unit stores an object to which a sound effect is to be emitted, and a set value set for the object,
The waveform storage unit stores a waveform that defines a sound effect emitted by the object,
The setting value acquisition unit acquires a setting value set for the object that emits a sound effect due to a predetermined operation,
The output sound control unit is configured to function to adjust and output a sound effect based on the stored waveform in accordance with the acquired set value. A program that causes a computer to function as an object storage unit, an aperiodic waveform storage unit, a periodic waveform generation unit, a natural frequency acquisition unit, and an output sound control unit,
The object storage unit stores an object to which a sound effect is to be emitted, and a set value set for the object,
The aperiodic waveform storage unit previously stores an aperiodic waveform that is a part of the entire waveform that defines the sound effect,
The periodic waveform generating unit generates a periodic waveform that is a part of the entire waveform based on the non-periodic waveform,
The natural frequency obtaining unit obtains a natural frequency based on a setting value set for the object that emits a sound effect due to a predetermined operation,
The output sound control unit, the stored aperiodic waveform, and a sound effect obtained by synthesizing the generated periodic waveform, while adjusting the frequency according to the acquired natural frequency, Features that function to output.

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