JP3881361B1 - Sound output device, sound output method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately select sound data subject to restriction of reproduction output according to the actual reproduction output situation of sound data, and to suitably suppress the number of sound data reproduced and output at the same time To provide.
A reproduction output target sound data acquisition unit 66 that acquires one or a plurality of sound data that is a current reproduction output target, and a reproduction volume of each sound data acquired by the reproduction output target sound data acquisition unit 66 is determined. One of the one or more sound data acquired by the reproduction output target sound data acquisition unit 66 according to the reproduction volume of the sound volume determined by the reproduction volume determination unit 68 and the reproduction volume determination unit 68. And a sound data reproduction output unit 74 that reproduces and outputs all or part of the sound data.
[Selection] Figure 6

Description

  The present invention relates to a sound output device, a sound output method, and a program, and more particularly, to a sound output device, a sound output method, and a program in which the maximum number of simultaneous sounds is limited.

In a game device, there is an upper limit on the number of sound data that can be reproduced and output simultaneously due to hardware limitations. For this reason, if a large number of sound data playback requests occur at the same time during the game, the most important sound data is preferentially played back, and other sound data is played back as needed. The number of simultaneous pronunciations is limited so as not to be performed. Specifically, priority information is set in advance for sound data, and sound data for restricting reproduction output is selected in accordance with the priority information (see Patent Document 1 below).
Japanese Patent Laid-Open No. 2003-311019

  However, in the above prior art, the sound data for restricting the reproduction output is limited based on the priority information set in advance for the sound data without considering the actual reproduction output situation of each sound data. Therefore, appropriate sound data may not be selected as a restriction target. That is, in the above-described prior art, even if the sound is actually reproduced only at a low volume and is confused with other sounds, if the sound data is given a high priority, it is excluded from the restriction target. There was a problem of detachment.

  The present invention has been made in view of the above problem, and appropriately selects sound data to be restricted for reproduction output according to the actual reproduction output status of the sound data, and simultaneously reproduces the sound data to be reproduced and output. An object of the present invention is to provide a sound output device, a sound output method, and a program capable of suitably suppressing the number.

  In order to solve the above problems, a sound output device according to the present invention includes a sound data acquisition unit that acquires one or more sound data that is a current reproduction output target, and each sound acquired by the sound data acquisition unit. Of the one or a plurality of sound data acquired by the sound data acquisition means according to the reproduction volume determination means for determining the reproduction volume of the data, and the reproduction volume of each sound data determined by the reproduction volume determination means Sound data reproduction output means for reproducing and outputting part or all of the sound data.

  Also, the sound output method according to the present invention determines a sound data acquisition step for acquiring one or a plurality of sound data that is a current reproduction output target, and determines a reproduction volume of each sound data acquired in the sound data acquisition step. A part or all of the one or more sound data acquired by the sound data acquisition step according to the reproduction sound volume determination step and the reproduction sound volume of each sound data determined in the reproduction sound volume determination step. A sound data reproduction output step for reproduction output.

  The program according to the present invention includes a sound data acquisition unit that acquires one or a plurality of sound data that is a current reproduction output target, and a reproduction volume that determines a reproduction volume of each sound data acquired by the sound data acquisition unit. A part or all of the one or more sound data acquired by the sound data acquisition unit is reproduced and output in accordance with a reproduction volume of each sound data determined by the determination unit and the reproduction volume determination unit. This is a program for causing a computer to function as sound data reproduction output means. The computer is a personal computer, a server computer, a home game machine, an arcade game machine, a portable game machine, a mobile phone, a portable information terminal, or the like. The program may be stored in a computer-readable information storage medium such as a CD-ROM or a DVD-ROM.

  According to the present invention, one or a plurality of sound data that is the current reproduction output target is acquired. For example, when the present invention is applied to a game device, one or a plurality of sound data that is the current reproduction output target is acquired in accordance with an event such as game progress. Then, a playback volume is determined for the acquired sound data, and some or all of the acquired one or more sound data are output according to the playback volume. According to the present invention, according to the actual situation (reproduction volume) of reproduction output of sound data, sound data subject to restriction of reproduction output is appropriately selected, and the number of sound data simultaneously reproduced and output is suitably suppressed. Will be able to.

  In one aspect of the present invention, it further includes reproduction volume sorting means for sorting the reproduction volume of each sound data determined by the reproduction volume determining means, and the sound data reproduction output means is configured to obtain a result of sorting by the reproduction volume sorting means. In response, a part or all of the one or more sound data acquired by the sound data acquisition means is reproduced and output. In this way, appropriate sound data can be selected as a playback output restriction target in accordance with the comparison of the playback volume.

  In one embodiment of the present invention, the distance from the position of the sound source set in the virtual space to the listening position set in the virtual space, and the volume attenuation rate of the sound emitted from the sound source at the listening position Sound volume attenuation rate data storage means for storing sound volume attenuation rate data indicating the relationship between the sound data acquisition means, the sound data acquisition means, the sound of the sound indicated by the one or more sound data that is the current reproduction output target The position of each sound source in the virtual space is further acquired, and the reproduction sound volume determination means is from the position of the sound source in the virtual space to the listening position of the sound indicated by each sound data acquired by the sound data acquisition means. A propagation distance calculation means for calculating the distance of the sound volume, and a volume attenuation rate corresponding to the distance calculated by the propagation distance calculation means before being stored in the volume attenuation rate data storage means Volume attenuation rate acquisition means for acquiring from the volume attenuation rate data, and based on the volume attenuation rate acquired by the volume attenuation rate acquisition means, the reproduction volume of each sound data selected by the sound data acquisition means decide. In this way, the reproduction volume of each sound data can be determined in consideration of the attenuation amount according to the distance that the sound propagates in the virtual space.

  In this aspect, the volume attenuation rate data storage means stores a plurality of volume attenuation rate data in association with the frequency of the sound emitted from the sound source set in the virtual space, and the sound data acquisition means Further acquiring the frequency of the sound indicated by the one or more sound data that is the current reproduction output target, the volume attenuation rate acquiring means corresponds to the volume attenuation rate corresponding to the frequency acquired by the sound data acquiring means A volume attenuation rate corresponding to the distance calculated by the propagation distance calculation means may be acquired from the data. In this way, the reproduction volume of each sound data can be determined in consideration of the attenuation amount according to the sound frequency.

  Further, the sound data acquisition unit further acquires a reference volume of a sound indicated by the one or more sound data that is a current reproduction output target, and the reproduction volume determination unit is acquired by the sound data acquisition unit. The reproduction volume of each sound data acquired by the sound data acquisition unit may be determined based on the reference volume and the volume attenuation rate acquired by the volume attenuation rate acquisition unit. In this way, it is possible to easily determine the playback volume of each sound data.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of a game device according to an embodiment of the present invention. The game apparatus 10 shown in the figure is configured by attaching a DVD-ROM 25 and a memory card 28 as information storage media to a consumer game machine 11, and further connecting a monitor 18 and a speaker 22, for example. The monitor 18 is a home television receiver, and the speaker 22 is a built-in speaker. The game apparatus 10 operates as a sound output apparatus according to the embodiment of the present invention.

  The home game machine 11 includes a bus 12, a microprocessor 14, an image processing unit 16, an audio processing unit 20, a DVD-ROM playback unit 24, a main memory 26, an input / output processing unit 30, and a controller 32. It is a computer game system. Components other than the controller 32 are accommodated in a housing.

  The bus 12 is for exchanging addresses and data among the units of the consumer game machine 11. The microprocessor 14, the image processing unit 16, the main memory 26, and the input / output processing unit 30 are connected by the bus 12 so that mutual data communication is possible.

  The microprocessor 14 controls each part of the consumer game machine 11 based on an operating system stored in a ROM (not shown), a program read from the DVD-ROM 25, and data read from the memory card 28. The main memory 26 is configured to include, for example, a RAM, and a program read from the DVD-ROM 25 and data read from the memory card 28 are written as necessary. The main memory 26 is also used for work of the microprocessor 14.

  The image processing unit 16 includes a VRAM, and draws a game screen on the VRAM based on the image data sent from the microprocessor 14. Then, the content is converted into a video signal and output to the monitor 18 at a predetermined timing.

  The input / output processing unit 30 is an interface for the microprocessor 14 to access the audio processing unit 20, the DVD-ROM playback unit 24, the memory card 28, and the controller 32. An audio processing unit 20, a DVD-ROM playback unit 24, a memory card 28 and a controller 32 are connected to the input / output processing unit 30.

  The sound processing unit 20 is configured to include a sound buffer, and reproduces various sound data such as game music, game sound effects, and messages read from the DVD-ROM 25 and stored in the sound buffer, from the speaker 22. Output. Specifically, the audio processing unit 20 can process a predetermined number of channels, mixes and reproduces sound data assigned to each channel, and outputs the sound data from the speaker 22.

  The DVD-ROM playback unit 24 reads a program recorded on the DVD-ROM 25 in accordance with an instruction from the microprocessor 14. Here, the DVD-ROM 25 is used to supply the program to the consumer game machine 11, but any other computer-readable information storage medium such as a CD-ROM or a ROM card may be used. Good. Further, the program may be supplied to the consumer game machine 11 from a remote place via a data communication network such as the Internet.

  The memory card 28 includes a nonvolatile memory (for example, EEPROM). The home-use game machine 11 includes a plurality of memory card slots for mounting the memory card 28, and the plurality of memory cards 28 can be mounted simultaneously. The memory card 28 is configured to be removable from the memory card slot, and is used for storing various game data such as saved data.

  The controller 32 is general-purpose operation input means for the player to input various game operations. The input / output processing unit 30 scans the state of each unit of the controller 32 at regular intervals (for example, every 1/60 seconds), and passes an operation signal representing the scan result to the microprocessor 14 via the bus 12. The microprocessor 14 determines the player's game operation based on the operation signal. The home game machine 11 is configured so that a plurality of controllers 32 can be connected, and the microprocessor 14 performs game control based on an operation signal input from each controller 32.

  A technique for suitably mixing and reproducing a plurality of sound data during a game using the consumer game machine 11 having the above hardware configuration will be described in detail below.

  FIG. 2 is a perspective view schematically showing a virtual three-dimensional space constructed in the main memory 26 in the game executed by the game apparatus 10. As shown in the figure, a field object 58 is arranged in a virtual three-dimensional space 50 serving as a stage of this game, and sound source objects 54-1 to 54-3 are arranged there. Furthermore, a player character object 52 that is an operation target of the player is also arranged. In the game apparatus 10, data indicating the position and orientation of each object in the virtual three-dimensional space 50 is stored in the main memory 26, and in accordance with a program stored in the DVD-ROM 25 and an operation signal input from the controller 32. Is updated every predetermined time. Then, every predetermined time, according to the latest data, an image of the virtual three-dimensional space 50 viewed from the viewpoint arranged in the virtual three-dimensional space 50 is imaged and output to the monitor 18. . Thus, the state of the virtual three-dimensional space 50 is displayed on the monitor 18 in real time. Here, the viewpoint is fixed at the position of the eye of the player character and is driven by the player character object 52. In addition, it may be fixed at a predetermined location in the virtual three-dimensional space 50, or may be driven by the player character object 52 in another positional relationship such as a position above the player character object 52.

  Here, the sound source object 54 is a game character object that is not the operation target of the player, such as a monster object, that is, an object that moves in the virtual three-dimensional space 50 in accordance with the algorithm described in the program stored in the DVD-ROM 25. A sound such as a predetermined call is emitted at a timing determined according to the program. And in this game device 10, this state is produced realistically. That is, in this game apparatus 10, the listening position is set at the representative position 53 of the player character object 52, and this listening position and the representative positions 56-1 to 56- of the sound source objects 54-1 to 54-3 are set. 3 is calculated, and a sound having a volume corresponding to the distance is output from the speaker 22.

  Such audio output processing will be described in more detail below.

  FIG. 3 is a diagram showing the storage contents of the sound data storage unit realized by the game apparatus 10. The sound data storage unit (see FIG. 6) is realized by a combination of the main memory 26 and the DVD-ROM 25 or by them alone. As shown in the figure, the sound data storage unit of the game apparatus 10 stores a plurality of sound data indicating the sound of a monster object reproduced and output during the game in association with the file name. . The sound data may have any format, for example, WAV format. Further, each sound data is associated with associated information and stored.

  FIG. 4 is a diagram for explaining the contents of the attached information. FIG. 4A is a diagram showing a state in which a plurality of sections are set for each sound data, and FIG. It is a figure which shows that contains the information for every area. First, as shown in FIG. 5A, each sound data is divided into a plurality of sections from the playback start position to the playback end position. In the game apparatus 10, data specifying each section (for example, the section data) Data that specifies the start timing and end timing), the frequency of the sound indicated by the sound data in the section, and the reference volume of the sound indicated by the sound data in the section are stored in advance as attached information. ing. This auxiliary information is stored in association with each audio data as described above. The values of the frequency and the reference volume may be obtained by calculation based on the sound data, or may be arbitrarily determined from the actual reproduction and output of the sound data.

  The game apparatus 10 calculates a distance L between the position of the sound source (sound generation position) in the virtual three-dimensional space 50 and the listening position (here, the representative position 53 of the player game character 52), and this distance L The volume attenuation rate α corresponding to is obtained. Therefore, the game apparatus 10 stores volume attenuation rate data indicating the relationship between the distance L and the volume attenuation rate α for each frequency value of the sound data, as shown in FIG. . Here, the volume attenuation rate α approaches 0 as the distance L increases, and the volume attenuation rate α approaches 1 as the distance L decreases. At the same distance L, the volume attenuation rate α is set to a larger value as the frequency is lower (fa <fb <fc). In this way, the sound is attenuated faster as the sound has a higher frequency, and the sound is transmitted farther as the sound has a lower frequency.

  When the sound data is actually reproduced and output, first, the distance L between the sounding position and the listening position of the sound data is calculated, and the volume attenuation rate α corresponding to the value of the distance L is calculated as the sound data. The volume attenuation rate data corresponding to the frequency stored in association is acquired. Thereafter, the volume attenuation rate α is multiplied by the reference volume stored in association with the sound data, and the value is set as the reproduction volume. This value is supplied together when the sound data is supplied to the sound processing unit 20, and the sound processing unit 20 converts the supplied sound data into the supplied reproduction volume value. The signal is output from the speaker 22. At this time, in the game apparatus 10, when it becomes necessary to simultaneously reproduce and output a larger number of sound data than the number of channels (maximum number of simultaneous sounds) of the sound processing unit 20, the reproduction output of the sound data having a small reproduction volume value Do not do. In this way, even if the sound is actually reproduced and output from the speaker 22, those that are low in volume and inconspicuous are excluded from the reproduction target, and conversely, those that are high in volume and conspicuous are surely left in the reproduction target. The selection of the sound data to be actually reproduced and output as described above is performed in real time, and a large amount of sound data is reproduced when the reproduction volume of the sound data being reproduced is reduced. When it is necessary to reproduce and output at a volume, the reproduction output of the sound data is stopped.

  FIG. 6 shows a functional block diagram of the game apparatus 10 that executes the above operations. As shown in the figure, the game apparatus 10 functionally has a game progression unit 60, a virtual space data storage unit 62, a reproduction output target sound data storage unit 64, a reproduction output target sound data acquisition unit 66, and a reproduction volume determination. Section 68, sort section 70, volume attenuation rate data storage section 72, sound data reproduction output section 74, and sound data storage section 76. The reproduction sound volume determination unit 68 includes a propagation distance calculation unit 68a, a sound volume attenuation rate acquisition unit 68b, and a reproduction sound volume calculation unit 68c. These functions are realized when the microprocessor 14 executes a program stored in the DVD-ROM 25.

  First, the game progression unit 60 manages the progression of a game set in the virtual three-dimensional space 50. Specifically, the position and posture of the player character object 52 are updated according to the operation signal input from the controller 32, and the contents are written in the virtual space data storage unit 62. Also, the occurrence of an event in the virtual three-dimensional space 50 is determined according to a predetermined algorithm, and when an event occurs, the status of the virtual three-dimensional space 50 is updated accordingly. Further, when an event for reproducing and outputting sound data, such as a sound effect occurrence event or a game music reproduction start event, the file name of the sound data is written in the reproduction output target sound data storage unit 64. At this time, the current reproduction position of the sound data is initialized to the start position (zero). The reproduction output target sound data storage unit 64 stores the file name of the sound data that is the target of the current reproduction output written from the game progression unit 60 and the current reproduction position in association with each other. FIG. 7 shows the stored contents of the reproduction output target sound data storage unit 64. The current playback position of each piece of sound data is incremented and updated by 1 every predetermined time by the game progression unit 60.

  The virtual space data storage unit 62 is configured with the main memory 26 as a center, and data indicating the state of the virtual three-dimensional space 50, for example, data indicating the position and orientation of an object arranged in the virtual three-dimensional space 50. Is stored, and the stored contents are updated by the game progression unit 60 as described above.

  The reproduction output target sound data acquisition unit 66 acquires one or a plurality of sound data (file names) that are the current reproduction output target from the reproduction output target sound data storage unit 64 at predetermined time intervals. The reproduction output target sound data acquisition unit 66 reads the position of each sound source in the virtual three-dimensional space 50 of the sound indicated by the sound data that is the current reproduction output target from the virtual space data storage unit 62. Furthermore, the reproduction output target sound data acquisition unit 66 associates the frequency of the sound indicated by the sound data that is the current reproduction output target and its reference volume with the sound data and stored in the sound data storage unit 76. Obtain from information.

  The reproduction volume determination unit 68 determines the reproduction volume of each sound data acquired by the reproduction output target sound data acquisition unit 66. For this reason, the propagation distance calculation unit 68a starts from the representative position 56 of the sound source object 54 in the virtual three-dimensional space 50, which is the sound generation position of the sound indicated by each sound data acquired by the reproduction output target sound data acquisition unit 66. The distance L to the representative position 53 of the player character object 52, which is the listening position, is calculated. At this time, the sound generation position and the listening position are read from the virtual space data storage unit 62. The volume attenuation rate acquisition unit 68 b acquires the volume attenuation rate α corresponding to the distance L calculated by the propagation distance calculation unit 68 a from the volume attenuation rate data stored in the volume attenuation rate data storage unit 72. More specifically, the volume attenuation rate data storage unit 72 stores the volume attenuation rate data in association with the frequency of the sound, and the volume attenuation rate acquisition unit 68b includes the reproduction output target sound data acquisition unit 66. Is referred to, and the volume attenuation rate α corresponding to the distance L is acquired therefrom. The reproduction volume calculation unit 68c multiplies the volume attenuation rate α acquired by the volume attenuation rate acquisition unit 68b by the reference volume of the sound data acquired by the reproduction output target sound data acquisition unit 66, thereby reproducing the reproduction volume of the sound data. Is calculated.

  The sort unit 70 sorts the sound data to be reproduced and output thus calculated using the reproduction volume as a sort key. In the sound data reproduction output unit 74, part or all of the sound data acquired by the reproduction output target sound data acquisition unit 66 according to the reproduction volume of each sound data determined by the reproduction volume determination unit 68. Is reproduced and output from the speaker 22. Specifically, a predetermined number of sound data is supplied to the sound processing unit 20 as an actual reproduction output target in descending order of reproduction volume, and the sound data is mixed and reproduced. The remaining sound data with a small reproduction volume is excluded from the reproduction output target.

  Here, a procedure of sound output processing by the game apparatus 10 will be described. FIG. 7 is a flowchart showing sound output processing by the game apparatus 10. As shown in the figure, the game apparatus 10 repeats a series of processes (S101 to S112) every predetermined time, and the sound processing unit 20 actually uses the sound data to be reproduced and output at each repetition timing. The data to be reproduced and output is determined, and the sound data to be reproduced and output is selected in real time. In this process, first, the reproduction output target sound data acquisition unit 66 acquires from the reproduction output target sound data storage unit 64 the file name and the current reproduction position of the sound data currently being reproduced and output (S101). ). Next, the position coordinates of each sound source corresponding to the sound data to be reproduced and output are read from the virtual space data storage unit 62 (S102). Also, the representative frequency f and the reference volume Vo are obtained from the information corresponding to the section to which the current reproduction position obtained in S101 belongs among the auxiliary information of the sound data to be reproduced and output (S103). Furthermore, the reproduction output target sound data acquisition unit 66 reads the listening position, that is, the coordinates of the representative position 53 of the player character object 52 from the virtual space data storage unit 62 (S104). Then, the propagation distance calculation unit 68a calculates the distance L between the position of each sound source and the listening position (S105). Then, the volume attenuation rate α for each sound data is acquired by reading the volume attenuation rate α corresponding to the distance L calculated in S105 from the volume attenuation rate data corresponding to the frequency f acquired in S103 (S106). Then, for each sound data, the reproduction volume of the sound data is calculated by multiplying the reference sound volume Vo acquired in S103 by the sound volume attenuation rate α acquired in S106 (S107).

  Next, it is determined whether or not the number of sound data to be reproduced and output exceeds a predetermined number (for example, the maximum number of simultaneous sounds of the sound processing unit 20) (S108). If not exceeded, a set of sound data and reproduction volume is supplied to the audio processing unit 20 so as to output all sound data to be reproduced and output at the reproduction volume calculated in S107 (S111). Then, after waiting for the next processing timing (repetition timing) (S112), the processing after S101 is executed again. On the other hand, if the number of sound data to be reproduced and output is exceeded, the sound data to be reproduced and output is sorted in ascending or descending order using the reproduction volume as a sort key (S109). Then, a predetermined number is selected in order from the sound data having the largest reproduction volume, and the sound data and the reproduction volume are supplied to the audio processing unit 20 to be mixed and reproduced (S110).

  According to the game apparatus 10 described above, with respect to the sound data to be reproduced and output in real time, the reproduction volume is determined based on the distance and frequency between the sound generation position and the listening position, and a large reproduction volume is obtained. Since the audio processing unit 20 can preferentially reproduce and output what is reproduced and output in the above, appropriate sound data can be selectively reproduced and output according to the actual output situation.

It is a figure which shows the hardware constitutions of the game device (sound output device) which concerns on embodiment of this invention. It is a perspective view which shows a virtual three-dimensional space typically. It is a figure which shows the memory content of a sound data storage part. It is a figure explaining the structure of attached information. It is a figure which shows volume attenuation rate data. It is a functional block diagram of the game device concerning the embodiment of the present invention. It is a figure which shows the memory content of the reproduction output object sound data storage part. It is a flowchart which shows the sound output process of the game device which concerns on embodiment of this invention.

Explanation of symbols

  10 game machines, 11 consumer game machines, 12 buses, 14 microprocessors, 16 image processing units, 18 monitors, 20 audio processing units, 22 speakers, 24 DVD-ROM playback units, 25 DVD-ROMs, 26 main memories, 28 Memory card, 30 input / output processing unit, 32 controller, 50 virtual three-dimensional space, 52 player character object, 53,56 representative position, 54 sound source object, 58 field object, 60 game progression unit, 62 virtual space data storage unit, 64 reproduction output target sound data storage unit, 66 reproduction output target sound data acquisition unit, 68 reproduction volume determination unit, 68a propagation distance calculation unit, 68b volume attenuation rate acquisition unit, 68c reproduction volume calculation unit, 70 sort unit, 72 volume attenuation Rate data storage, 74 sound data playback output , 76 sound data storage unit.

Claims (5)

Volume attenuation rate indicating the relationship between the distance from the position of the sound source set in the virtual space to the listening position set in the virtual space and the volume attenuation rate of the sound emitted from the sound source at the listening position Volume attenuation rate data storage means for storing a plurality of data in association with the frequency of sound emitted from a sound source set in the virtual space;
Sound data storage means for storing the frequency of the sound indicated by the sound data in each of a plurality of sections set in the sound data in association with the sound data;
Every predetermined time, from the sound data storage means, one or a plurality of sound data that is the current reproduction output target and the frequency of the sound of the section to which the current reproduction position of each sound data belongs , and each sound Sound data acquisition means for acquiring the position of the transmission source of the sound indicated by the data in the virtual space ;
Propagation distance calculating means for calculating the distance from the position of the sound source in the virtual space to the listening position of the sound indicated by each sound data acquired by the sound data acquiring means;
Volume attenuation for obtaining a volume attenuation rate corresponding to the distance calculated by the propagation distance calculation means from the volume attenuation rate data corresponding to the frequency acquired by the sound data acquisition means from the volume attenuation rate data storage means Rate acquisition means;
Reproduction volume determination means for determining the reproduction volume of each sound data acquired by the sound data acquisition means based on the volume attenuation rate acquired by the volume attenuation rate acquisition means;
Sound data reproduction output that reproduces and outputs part or all of the one or more sound data acquired by the sound data acquisition unit according to the reproduction volume of each sound data determined by the reproduction volume determination unit Means,
A sound output device comprising: The sound output device according to claim 1,
The sound data storage means further stores a reference sound volume indicated by the sound data in each section set in the sound data in association with the sound data,
The sound data acquisition means further acquires, from the sound data storage means, a reference volume of a sound of a section to which a current reproduction position of the one or more sound data that is a current reproduction output target belongs,
The reproduction volume determination unit is configured to obtain each sound acquired by the sound data acquisition unit based on the reference volume acquired by the sound data acquisition unit and the volume attenuation rate acquired by the volume attenuation rate acquisition unit. Determine the playback volume of the data,
A sound output device characterized by that. The sound output device according to claim 1 or 2 ,
Reproduction volume sorting means for rearranging and sorting the reproduction volume of each sound data determined by the reproduction volume determination means in descending order ,
The sound data reproduction / output unit is configured to perform a predetermined maximum in order from sound data having a large reproduction volume among the one or more sound data acquired by the sound data acquisition unit according to a sorting result by the reproduction volume sorting unit. Select the number of simultaneous sounds or less, and play and output the selected sound data .
A sound output device characterized by that. Volume attenuation rate indicating the relationship between the distance from the position of the sound source set in the virtual space to the listening position set in the virtual space and the volume attenuation rate of the sound emitted from the sound source at the listening position Storing a plurality of data in the volume attenuation rate data storage means in association with the frequency of the sound emitted from the sound source set in the virtual space;
Associating with the sound data, storing the sound frequency indicated by the sound data in each of a plurality of sections set in the sound data in the sound data storage means;
Every predetermined time, from the sound data storage means, one or a plurality of sound data that is the current reproduction output target and the frequency of the sound of the section to which the current reproduction position of each sound data belongs , and each sound Sound data acquisition step of acquiring the position of the transmission source in the virtual space of the sound indicated by the data;
A propagation distance calculating step of calculating a distance from the position of the sound source in the virtual space to the listening position of the sound indicated by each sound data acquired in the sound data acquiring step;
Volume attenuation for obtaining a volume attenuation rate corresponding to the distance calculated in the propagation distance calculation step from the volume attenuation rate data corresponding to the frequency acquired in the sound data acquisition step from the volume attenuation rate data storage means Rate acquisition step;
A reproduction volume determination step for determining a reproduction volume of each sound data acquired in the sound data acquisition step based on the volume attenuation rate acquired in the volume attenuation rate acquisition step;
In response to said playback volume of each sound data determined by the playback volume determining step, among the one or more audio data acquired by the sound data obtaining step, the sound data playback output for reproducing and outputting part of or all Steps,
A sound output method comprising: Volume attenuation rate indicating the relationship between the distance from the position of the sound source set in the virtual space to the listening position set in the virtual space and the volume attenuation rate of the sound emitted from the sound source at the listening position Volume attenuation rate data storage means for storing a plurality of data in association with the frequency of sound emitted from a sound source set in the virtual space;
Sound data storage means for storing the frequency of the sound indicated by the sound data in each of a plurality of sections set in the sound data in association with the sound data;
Every predetermined time, from the sound data storage means, one or a plurality of sound data that is the current reproduction output target and the frequency of the sound of the section to which the current reproduction position of each sound data belongs , and each sound Sound data acquisition means for acquiring the position of the transmission source in the virtual space of the sound indicated by the data;
A propagation distance calculating means for calculating a distance from the position of the sound source in the virtual space to the listening position of the sound indicated by each sound data acquired by the sound data acquiring means;
Volume attenuation for acquiring a volume attenuation rate corresponding to the distance calculated by the propagation distance calculation means from the volume attenuation rate data corresponding to the frequency acquired by the sound data acquisition means from the volume attenuation rate data storage means Rate acquisition means,
Based on the volume attenuation rate acquired by the volume attenuation rate acquisition means, the playback volume determination means for determining the playback volume of each sound data acquired by the sound data acquisition means, and determined by the playback volume determination means A program for causing a computer to function as sound data reproduction output means for reproducing and outputting part or all of the one or more sound data acquired by the sound data acquisition means according to the reproduction volume of each sound data .

Images