JP7474130B2 - PROGRAM, INFORMATION PROCESSING METHOD, AND INFORMATION PROCESSING APPARATUS - Google Patents

Description

The present invention relates to a program, an information processing method, and an information processing device.

Conventionally, limiters and compressors that adjust the volume of sound data are known (see, for example, Patent Document 1). In a compressor, for example, when the volume of input sound data at a certain point in time exceeds a predetermined threshold, the compressor reduces the maximum value of the sound data by compressing the excess volume at a predetermined ratio. This compresses the dynamic range, which is the difference between the maximum and minimum volumes.

JP 2009-272926 A

However, conventional technology has problems such as noise being generated during the attack time, which is the period from when the volume of input sound data at a certain point exceeds a certain threshold to when the compressor starts compressing the sound.

Therefore, one objective of the present invention is to provide a technology that can adjust the volume more appropriately.

In one proposal, the program causes the computer to execute a first acquisition process for acquiring data from a first time point to a second time point from the sound data to be output, a first determination process for determining the attenuation of the sound volume at each time point from the first time point to the second time point to a value that increases over time if the volume of the sound data at the second time point exceeds a predetermined threshold, and a first output process for outputting the sound at each time point from the first time point in the sound data at the volume of the attenuation at each time point determined in the first determination process.

In one aspect, the volume can be adjusted more appropriately.

FIG. 2 is a diagram illustrating an example of a hardware configuration of an information processing device according to an embodiment. FIG. 2 is a functional block diagram of the information processing device according to the embodiment. 10 is a flowchart illustrating an example of processing of the information processing device according to the embodiment. FIG. 11 is a diagram illustrating an example of a setting screen for various parameters. 4A to 4C are diagrams illustrating an example of a waveform of the amplitude of sound data according to the embodiment. 10A and 10B are diagrams illustrating an example of a transition of attenuation degree according to the embodiment.

The following describes an embodiment of the present invention with reference to the drawings.

The information processing device 10 according to the embodiment is, for example, a home game console, a portable game console, a smartphone, a tablet terminal, a personal computer, a volume control device, etc. The information processing device 10 has, for example, a function as a limiter that keeps the volume below a certain level, and a compressor that reduces the difference between loudness and softness of sound.

<Hardware Configuration>
Fig. 1 is a diagram showing an example of a hardware configuration of an information processing device 10 according to an embodiment. The information processing device 10 shown in Fig. 1 includes a drive device 100, an auxiliary storage device 102, a memory device 103, a CPU 104, an interface device 105, a display device 106, and an input device 107, which are all connected to each other via a bus B.

The game program that realizes processing in the information processing device 10 is provided by a recording medium 101. When the recording medium 101 on which the game program is recorded is set in the drive device 100, the game program is installed from the recording medium 101 via the drive device 100 into the auxiliary storage device 102. However, the game program does not necessarily have to be installed from the recording medium 101, but may be downloaded from another computer via a network. The auxiliary storage device 102 stores the installed game program as well as necessary files, data, etc.

The memory device 103 is, for example, a memory such as a DRAM (Dynamic Random Access Memory) or an SRAM (Static Random Access Memory), and when an instruction to start a program is received, reads out the program from the auxiliary storage device 102 and stores it. The CPU 104 realizes functions related to the information processing device 10 according to the program stored in the memory device 103. The interface device 105 is used as an interface for connecting to a network. The display device 106 displays a GUI (Graphical User Interface) or the like according to a program. The input device 107 is composed of a controller or the like, a keyboard and a mouse, or a touch panel and buttons, and is used to input various operation instructions.

Note that examples of the recording medium 101 include portable recording media such as CD-ROMs, DVDs, Blu-ray discs, and USB memory. Examples of the auxiliary storage device 102 include hard disk drives (HDDs), solid state drives (SSDs), and flash memory. Both the recording medium 101 and the auxiliary storage device 102 correspond to computer-readable recording media.

<Functional configuration>
Next, the functional configuration of the information processing device 10 will be described with reference to Fig. 2. Fig. 2 is a functional block diagram of the information processing device 10 according to the embodiment.

The information processing device 10 has a memory unit 11. The memory unit 11 is realized, for example, using an auxiliary storage device 102 or the like. The memory unit 11 stores sound data, etc.

The information processing device 10 also has a reception unit 12, an acquisition unit 13, a determination unit 14, an adjustment unit 15, a control unit 16, and an output unit 17. Each of these units is realized by a process executed by the CPU 104 of the information processing device 10 using one or more programs installed in the information processing device 10.

The reception unit 12 receives various inputs from a user, etc. The acquisition unit 13 acquires sound data stored in the memory unit 11.

The determination unit 14 determines the degree of attenuation of the volume at each point in time of the sound data. Note that the degree of attenuation of the volume may be, for example, a value indicating the rate at which the volume is attenuated.

The adjustment unit 15 adjusts the volume of the sound data at each point in time, for example, based on the degree of attenuation determined by the determination unit 14 and the volume level specified by the user.

The control unit 16 controls each part depending on, for example, the situation of the game, etc.

The output unit 17 outputs the sound of the sound data to a sound output device such as a speaker at the volume adjusted by the adjustment unit 15.

<Processing>
Next, the processing of the information processing device 10 will be described with reference to Fig. 3 and Fig. 4. Fig. 3 is a flowchart showing an example of the processing of the information processing device 10 according to the embodiment. Fig. 4 is a diagram explaining an example of a setting screen for various parameters.

In step S1, the reception unit 12 receives settings of various parameters. Here, the reception unit 12 may receive settings such as the time length of the look-ahead section, the upper volume limit (Threshold, an example of a "predetermined threshold"), the volume level, and the type of sound data, all of which are specified by the user. The look-ahead section will be described later. The upper volume limit is the maximum volume of the sound output from the information processing device 10 and input to a sound output device such as a speaker.

In the example of FIG. 4, the reception unit 12 displays on the setting screen 401 a slider 411 for specifying a volume level, a slider 421 for specifying a volume upper limit value, and a slider 431 for specifying a time length of the look-ahead section. The reception unit 12 also displays a check box 441 for specifying a type of sound data. In the example of FIG. 4, the larger the value specified by the slider 421, the larger the volume upper limit value is set. Also, the larger the value specified by the slider 431, the longer the time length of the look-ahead section is set.

The volume level is the level of the volume of the sound output from the information processing device 10 and input to a sound output device such as a speaker. The volume level may be specified, for example, on a scale of 1 to 5. In this case, when a volume level of "3" is specified, the adjustment unit 15 may not change the volume defined by the sound data, and when a volume level of "4" is specified, the adjustment unit 15 may increase the volume defined by the sound data by a predetermined value (for example, 10%).

The adjustment unit 15 may also be configured to increase the average volume of the sound output from the information processing device 10 as the volume level value increases. Hereinafter, the volume after the volume specified in the sound data has been increased or decreased according to the specified volume level will be simply referred to as the volume of the sound data. The volume of the sound data may be determined, for example, by multiplying the volume specified in the sound data by a coefficient according to the specified volume level.

The type of sound data is the type of sound data that is the subject of the following processing. The type of sound data may include, for example, types such as "dialogue", "BGM", and "sound effects". In this case, if only "dialogue" is specified by the user as the type of sound data, for example, only the sound data of the dialogue may be subject to the following processing among the various sound data output according to the game situation, etc. This allows, for example, the user to easily hear only the sound of the dialogue. Note that it may also be possible to specify the time length of the reading section, the upper volume limit, and the volume level for each type of sound data.

The sound output device may be built into the information processing device 10 or may be separate. If it is separate, the information processing device 10 may be, for example, a game console, and the sound output device may be, for example, a television device that displays images from the game console and outputs sound.

Then, the reception unit 12 receives a request to play back sound data (step S2). Here, for example, the control unit 16 may instruct the playback of specific sound data in accordance with the game situation or the like. Or, for example, the playback of specific sound data may be instructed in response to a user operation or the like. Subsequent processing may be executed in real time while the sound data is being played back.

Then, the determination unit 14 initializes various parameters (step S3). Here, the determination unit 14 initializes the values of various parameters for performing various sound processing. For example, for parameters specified by the user in the processing of step S1, the determination unit 14 sets the value specified by the user. Furthermore, for other parameters, the determination unit 14 sets initial values that have been set in advance.

The determination unit 14 also sets the beginning of the sound data instructed to be played as the start of the read-ahead section to be processed. The determination unit 14 also sets the value of the attenuation coefficient at each time point within the read-ahead section to be processed to the initial value of "1."

Next, the acquisition unit 13 acquires data within the read-ahead section to be processed from the sound data instructed to be played (step S4). Here, the acquisition unit 13 reads data from the sound data instructed to be played, from the start point of the read-ahead section to be processed, for the time length of the read-ahead section set by the user.

Then, the determination unit 14 determines whether or not there is a time point in the look-ahead section to be processed at which the volume of the sound data should be reduced (compressed) (hereinafter also referred to as an "exceeding time point") (step S5). Here, the determination unit 14 may determine, for example, whether or not there is a time point in the look-ahead section to be processed at which the value obtained by multiplying the attenuation coefficient of each time point by the volume of the sound data at each time point exceeds a volume upper limit value (Threshold). In this case, the determination unit 14 may determine, for example, for each time point in the look-ahead section to be processed, whether or not the value obtained by multiplying the attenuation coefficient at each time point in the look-ahead section to be processed by the volume of the sound data at each time point in the look-ahead section to be processed exceeds the volume upper limit value. Then, if there is a time point at which the volume upper limit value is exceeded, the determination unit 14 may determine that time point as an exceeding time point.

(Compression processing (attenuation processing))
If an overshoot time point exists (YES in step S5), the determination unit 14 calculates a target attenuation coefficient according to the volume of the sound data at the overshoot time point, the volume upper limit value, etc. (step S6). Here, the determination unit 14 may calculate, for example, an attenuation coefficient that attenuates the volume at the overshoot time point to below the volume upper limit value as the target attenuation coefficient. In this case, for example, when the volume at the overshoot time point is 1.5 times the volume upper limit value, the determination unit 14 may calculate the target attenuation coefficient to be 0.66 (= 1/1.5) (target attenuation degree is 33%). Alternatively, the determination unit 14 may calculate, as the target attenuation coefficient, an attenuation coefficient that prevents the volume at the overshoot time point from exceeding the volume upper limit value by a predetermined amount or more.

Then, the determination unit 14 determines the attenuation coefficient at each time point in the look-ahead section to be processed based on the exceedance time point and the calculated target attenuation coefficient (step S7). Here, the determination unit 14 may determine the attenuation coefficient at each time point so that the value changes linearly or nonlinearly and monotonically (e.g., monotonically decreasing) from the value of the attenuation coefficient set for the start time point to the value of the target attenuation coefficient as time passes from the start time point of the look-ahead section to be processed to the exceedance time point.

The determination unit 14 also updates the values of the attenuation coefficients at each time point within the pre-reading interval to be processed to the determined values of each attenuation coefficient and stores them.

Then, the adjustment unit 15 adjusts the volume by multiplying the attenuation coefficient determined for the start point of the look-ahead section to be processed by the volume of the sound data at the start point of the look-ahead section, and causes the output unit 17 to output the sound at the start point of the look-ahead section to be processed to the sound output device (step S8). As a result, the sound at the start point of the look-ahead section to be processed is output from a sound output device such as a speaker.

Next, the control unit 16 determines whether or not to end the playback of the instructed sound data (step S9). Here, the control unit 16 may determine to end the playback of the sound data, for example, if the start point of the read-ahead section is the end point of the instructed sound data to be played.

The control unit 16 may also determine to end the playback of the sound data when, for example, an instruction to end the playback of the sound data is given depending on the game situation, etc., or when an instruction to end the playback of the sound data is given in response to a user operation, etc.

If it is determined that playback should not be terminated (NO in step S9), the acquisition unit 13 sets the next point in time after the start point of the read-ahead section to be processed as the start point of the read-ahead section to be processed, and processes the data within the read-ahead section of the sound data instructed to be played (step S10), and proceeds to processing in step S4.

On the other hand, if it is determined that playback should be ended (YES in step S9), the control unit 16 ends the playback process of the sound data.

On the other hand, if the determination in step S5 indicates that there is no exceedance time point (NO in step S5), the determination unit 14 determines whether or not to perform release processing (step S11). Here, the determination unit 14 may determine, for example, whether or not there is a time point within the look-ahead section to be processed at which the volume value not multiplied by the attenuation coefficient exceeds the volume upper limit value (Threshold) (hereinafter also referred to as a "non-attenuation exceedance time point"). In this case, the determination unit 14 may determine, for example, for each time point within the look-ahead section to be processed, whether the volume of the sound data at each time point within the look-ahead section to be processed exceeds the volume upper limit value, and may determine that there is a non-attenuation exceedance time point if the value at a certain time point exceeds the volume upper limit value.

Then, the decision unit 14 may determine not to perform the release process if a non-attenuation exceedance time point exists. The decision unit 14 may also determine to perform the release process if a non-attenuation exceedance time point does not exist.

If it is determined that the release process is not to be performed (NO in step S11), the decision unit 14 sets the current target damping coefficient value as the initial value of the damping coefficient at each time point in the look-ahead section to be processed thereafter (step S12), and proceeds to the processing of step S8.

(Release Processing)
On the other hand, when it is determined that the release process is to be performed (YES in step S11), the determination unit 14 determines the target damping coefficient at the predetermined time point to be "1" (target damping degree to be 0%) (step S13). Here, the determination unit 14 may set the predetermined time point to be a time point that is a predetermined time (for example, 1 ms; hereinafter, also referred to as "release time") after the start of the read-ahead section to be processed.

Then, the determination unit 14 determines the attenuation coefficient at each time point in the look-ahead section to be processed based on the specified time point and the target attenuation coefficient (step S14), and proceeds to the processing of step S8. Here, the determination unit 14 may determine the attenuation coefficient at each time point so that the value changes linearly or nonlinearly in a monotonically increasing manner from the value of the attenuation coefficient set for the start time point to the value of the target attenuation coefficient as time passes from the start time point of the look-ahead section to be processed to the specified time point. The determination unit 14 may then set the value of the target attenuation coefficient, "1", as the initial value of the attenuation coefficient at each time point after the specified time point.

<<Examples of Processing>>
Next, a specific example of the process in FIG. 3 will be described with reference to FIG. 5A and FIG. 5B. FIG. 5A is a diagram for explaining an example of a waveform of the amplitude of sound data according to the embodiment. FIG. 5B is a diagram for explaining an example of a transition of the attenuation degree according to the embodiment.

(Compression process when the attenuation coefficient of the look-ahead section exceeds the upper volume limit)
In the example of Figure 5A, sound data up to a first point in time 501 is played back, and the look-ahead section 503 to be processed currently is defined as the section from the first point in time 501 to the second point in time 502, and the value of the attenuation coefficient at each point in the look-ahead section 503 to be processed currently is set to "1" (attenuation degree is 0%).

For example, if the value of the attenuation coefficient for the look-ahead section to be processed is initialized in the processing of step S3 in FIG. 3, and if an exceedance point does not occur within a predetermined time after the processing of step S13 in FIG. 3 is performed, the value of the attenuation coefficient at each point in the look-ahead section 503 to be processed this time is set to "1".

In the example of FIG. 5A, the value obtained by multiplying the volume of the sound data at each time point within the currently-processed look-ahead section 503 by the attenuation coefficient "1" at each time point exceeds the upper limit value 500, which is the amplitude corresponding to the upper volume limit value, at the second time point 502. Therefore, the second time point 502 is determined to be the exceeding time point.

In this case, in the process of step S6 in FIG. 3, the determination unit 14 may calculate the value obtained by dividing the volume upper limit value by the volume of the sound data at the second time point 502 as the target attenuation coefficient value 551 at the second time point 502, which is the exceedance time point. This allows the volume of the sound data at the second time point 502 to be attenuated to a volume equal to or lower than the volume upper limit value.

In the process of step S7 in FIG. 3, the determination unit 14 may linearly decrease (attenuation degree increases) the value of the attenuation coefficient at each time point from "1" to value 551 as time passes, from the first time point 501, which is the start time of the currently-processed look-ahead section 503, to the second time point 502, which is the exceedance time point, as shown in FIG. 5B. As a result, the volume of the sound data at each time point within the currently-processed look-ahead section 503 is attenuated to a value that does not exceed the upper volume limit and output. Therefore, it is possible to compress the dynamic range, which is the difference between the maximum volume and the minimum volume, while reducing discomfort felt by the user.

(Compression process when the attenuation coefficient of the look-ahead section is less than 1 and exceeds the upper volume limit)
5A, sound data up to a third time point 511 is played back, and the third time point 511 to a fourth time point 512 is the currently-processed look-ahead section 513. The third time point 511 is a time point between the first time point 501 and the second time point 502. It is assumed that the value of the attenuation coefficient at each time point in the currently-processed look-ahead section 513 is set to less than 1 (attenuation is greater than 0%) by the processing of the above-described section 503.

In the example of FIG. 5A, the value obtained by multiplying the volume of the sound data at each time point within the currently-processed look-ahead section 513 by the attenuation coefficient at each time point exceeds the upper limit value 500 at the fourth time point 512. Therefore, the fourth time point 512 is also considered to be an exceeding time point.

In this case, in the process of step S6 in FIG. 3, the determination unit 14 may calculate the target attenuation coefficient value 552 at the exceeding point in time, ie, the fourth point in time 512, as a value obtained by dividing the volume upper limit value by the volume of the sound data at the fourth point in time 512. This allows the volume of the sound data at the fourth point in time 512 to be attenuated to a volume equal to or lower than the volume upper limit value.

Then, in the process of step S7 in FIG. 3, the determination unit 14 linearly decreases (the degree of attenuation increases) the attenuation coefficient at each time point from the third time point 511, which is the start time of the currently-processed look-ahead section 513, to the fourth time point 512, which is the exceedance time point, from value 553 at the third time point 511 to value 552 as time passes, as shown in FIG. 5B. This makes it possible to maintain a high dynamic range compression rate while preventing the volume of the sound data from exceeding a predetermined volume upper limit, for example, when the sound data to be played back is recorded so that the volume of the sound data gradually increases.

(Release Processing)
In the example of Fig. 5A, sound from the sound data up to the fifth time point 521 is played back, and the fifth time point 521 to the sixth time point 522 is the currently-processed look-ahead section 523. The fifth time point 521 is a time point after the fourth time point 512. By the processing of step S12 in Fig. 3 after the processing of the above-mentioned section 513, the value of the attenuation coefficient at each time point in the currently-processed look-ahead section 523 is set to the attenuation coefficient value 552 at the fourth time point 512.

In the example of FIG. 5A, the value obtained by multiplying the volume of the sound data at each time point in the look-ahead section 523 currently being processed by the attenuation coefficient at each time point does not exceed the volume upper limit at any time point. In addition, the volume of the sound data at each time point in the look-ahead section 523 currently being processed does not exceed the volume upper limit at any time point.

In this case, in the processes of steps S13 and S14 in FIG. 3, the determination unit 14 determines the volume attenuation at each time point from the fifth time point 521 to the time point 524 before the sixth time point 522 to a value that increases (the attenuation decreases) over time from the attenuation coefficient value 552 at the fourth time point 512 to "1". Note that the time length from the fifth time point 521 to time point 524, which is the time length until the attenuation coefficient is returned to 1, may be set in advance. This allows the volume to be returned to its original state relatively quickly when the volume upper limit value is no longer exceeded in the look-ahead section.

((An example of determining the release time, etc. based on the volume in the look-ahead section))
3, the determination unit 14 may determine the release time, etc., based on the volume in the read-ahead section at each time point. This allows the volume to be adjusted while maintaining the sound quality more appropriately, for example, when the information processing device 10 is used as a limiter.

In this case, the determination unit 14 may determine the release time length to be longer, for example, as the volume of the subsequent sound is larger. Also, the determination unit 14 may determine the release time length to be shorter, for example, as the volume of the subsequent sound is smaller.

In this case, the determination unit 14 may determine, for example, the value vol_ratio of the volume attenuation coefficient at the start of the currently-processed read-ahead section by the following formula (1):

vol_ratio = (Threshold / peak_max - vol_ratio_previous)/(ReleaseTime *sample_rate) + vol_ratio_previous ... (1)
Here, Threshold is the volume upper limit value mentioned above, peak_max is the maximum volume value at each point in the look-ahead section currently being processed, vol_ratio_previous is the value of the volume attenuation coefficient at the start of the previous look-ahead section to be processed, ReleaseTime is the reference value of the release time (e.g., 1 ms), and sample_rate is the number of samples (sampling frequency, sampling rate, sample rate) per unit time (e.g., 1 s).

When the value of vol_ratio becomes 1 or more, the determination unit 14 may set the value of vol_ratio to 1 and terminate the release process. As a result, the value of vol_ratio is in the range from 0 to 1. Furthermore, when, for example, the value of peak_max of the look-ahead section to be processed this time is different from the value of peak_max of the look-ahead section to be processed previously, the determination unit 14 may re-determine the value of the volume attenuation coefficient vol_ratio at each subsequent time point based on formula (1).

According to formula (1), when peak_max is the same value as Threshold, the release time becomes the reference value, and the volume attenuation coefficient value vol_ratio increases linearly (attenuation decreases) during the release time. Also, when peak_max is smaller than Threshold, the release time becomes shorter than the reference value, and the volume attenuation coefficient value increases nonlinearly and monotonically during the release time. Also, when peak_max is larger than Threshold, the release time becomes longer than the reference value, and the volume attenuation coefficient value increases nonlinearly and monotonically during the release time.

(Compression during release processing)
5A , sound data up to a seventh time point 531 is played back, and the read-ahead section 533 to be processed this time is from the seventh time point 531 to the eighth time point 532. The seventh time point 531 is a time point between the fifth time point 521 and the sixth time point 522.

By the processing of steps S13 and S14 in FIG. 3 after the processing of section 523 described above, the value of the attenuation coefficient at each time point within the currently processed look-ahead section 533 is set to a value that increases over time from the attenuation coefficient value 552 at the fourth time point 512 to "1" at each time point prior to time point 524. Also, at each time point after time point 524, it is set to "1".

In the example of FIG. 5A, the value obtained by multiplying the volume of the sound data at each time point within the currently-processed look-ahead section 533 by the value of the attenuation coefficient at each time point exceeds the upper limit value 500, which is the amplitude corresponding to the upper volume limit value, at the eighth time point 532. Therefore, the eighth time point 532 is also considered to be an exceeding time point.

In this case, in the processes of steps S6 and S7 in FIG. 3, the determination unit 14 linearly decreases (the degree of attenuation increases) the value of the attenuation coefficient at each time point from the seventh time point 531, which is the start time of the currently-processed look-ahead section 533, to the eighth time point 532, which is the exceedance time point, over time, as shown in FIG. 5B. This makes it possible to compress the dynamic range, which is the difference between the maximum volume and the minimum volume, while reducing the sense of discomfort felt by the user, even during the release process period.

<Modification>
Each functional unit of the information processing device 10 may be realized by cloud computing configured with one or more computers, for example.

Although the above describes in detail an embodiment of the present invention, the present invention is not limited to such a specific embodiment, and various modifications and variations are possible within the scope of the gist of the present invention described in the claims.

REFERENCE SIGNS LIST 10 Information processing device 11 Storage unit 12 Reception unit 13 Acquisition unit 14 Determination unit 15 Adjustment unit 16 Control unit 17 Output unit

Claims (9)

On the computer,
a first acquisition process for acquiring data from a first time point to a second time point from among the output sound data;
a first determination process for determining, when a volume of the sound data at the second time point exceeds a predetermined threshold, a degree of attenuation of the volume at each time point from the first time point to the second time point to a value that increases over time;
a first output process for outputting the sound at each time point from the first time point of the sound data at a volume of the attenuation at each time point determined in the first determination process;
a second acquisition process for acquiring data from a third time point to a fourth time point between the first time point and the second time point from the sound data;
a second determination process for determining the attenuation of the sound volume at each time point from the third time point to the fourth time point to a value that increases over time when the sound volume at the fourth time point based on the attenuation degree determined in the first determination process exceeds the predetermined threshold value;
outputting the sound at each time point from the first time point to the third time point of the sound data at a volume of attenuation at each time point determined in the first determination process;
a second output process for outputting the sound at each time point from the third time point to the fourth time point of the sound data at a volume of the attenuation at each time point determined in the second determination process;
a third acquisition process for acquiring data from a fifth time point after the fourth time point to a sixth time point from the sound data;
a third determination process for determining, when the volume at each time point from the fifth time point to the sixth time point based on the attenuation at the fourth time point determined in the second determination process is equal to or less than the predetermined threshold, the attenuation of a predetermined volume, which is the volume at each time point from the fifth time point to the sixth time point based on the sound data, to a value that decreases over a predetermined time period from the fifth time point;
a third output process for outputting the sound at each time point from the fifth time point to the sixth time point of the sound data at a volume of the attenuation at each time point determined in the third determination process;
Run the command,
In the third determination process,
When the maximum value of the predetermined volume is smaller than the predetermined threshold value, the length of the predetermined time is determined to be shorter than when the maximum value of the predetermined volume is equal to the predetermined threshold value;
When the maximum value of the predetermined volume is greater than the predetermined threshold value, the length of the predetermined time is determined to be longer than when the maximum value of the predetermined volume is equal to the predetermined threshold value.
program. In the first determination process,
determining a degree of attenuation of the sound volume at each time point from the first time point to the second time point to a value that increases over time so that the sound volume output at the second time point is equal to or less than the predetermined threshold value;
The program according to claim 1 . In the second determination process,
determining the attenuation degree of the sound volume at each time point from the third time point to the fourth time point to a value that increases over time from the attenuation degree at the third time point determined in the second determination process so that the sound volume output at the fourth time point is equal to or less than the predetermined threshold value;
The program according to claim 1 or 2 . In the third determination process,
determining a degree of attenuation of the sound volume at each time point from the fifth time point to the sixth time point or earlier to a value that decreases over time from the degree of attenuation at the fourth time point determined in the second determination process;
In the third output process,
outputting the sound at each time point from the fourth time point to the fifth time point of the sound data at a volume of the attenuation at the fifth time point determined in the second determination process, and outputting the sound at each time point from the fifth time point to the sixth time point of the sound data at a volume of the attenuation at each time point determined in the third determination process;
The program according to any one of claims 1 to 3 , which causes the program to execute the steps of: In the third determination process,
determining an attenuation degree of the sound volume at each time point from the fifth time point to the sixth time point based on the sound volume at each time point from the fifth time point to the sixth time point according to the sound data;
The program according to any one of claims 1 to 4 . a fourth acquisition process for acquiring data from a seventh time point between the fifth time point and the sixth time point, out of the sound data;
a fourth determination process for determining, when the volume at the eighth time point based on the attenuation degree determined in the third determination process exceeds the predetermined threshold, the volume attenuation degree at each time point from the seventh time point to the eighth time point to a value that changes over time based on the volume attenuation degree at the seventh time point determined in the third determination process and the amount by which the volume at the eighth time point based on the sound data exceeds the predetermined threshold;
The program according to claim 1 , which causes the program to execute the above steps. execute a process of accepting, by a user, a designation of a time length from a first time point to a second time point acquired by the first acquisition process;
The program according to any one of claims 1 to 6 . An information processing device,
a first acquisition process for acquiring data from a first time point to a second time point from among the output sound data;
a first determination process for determining, when a volume of the sound data at the second time point exceeds a predetermined threshold, a degree of attenuation of the volume at each time point from the first time point to the second time point to a value that increases over time;
a first output process for outputting the sound at each time point from the first time point of the sound data at a volume of the attenuation at each time point determined in the first determination process;
a second acquisition process for acquiring data from a third time point to a fourth time point between the first time point and the second time point from the sound data;
a second determination process for determining the attenuation of the sound volume at each time point from the third time point to the fourth time point to a value that increases over time when the sound volume at the fourth time point based on the attenuation degree determined in the first determination process exceeds the predetermined threshold value;
outputting the sound at each time point from the first time point to the third time point of the sound data at a volume of attenuation at each time point determined in the first determination process;
a second output process for outputting the sound at each time point from the third time point to the fourth time point of the sound data at a volume of the attenuation at each time point determined in the second determination process;
a third acquisition process for acquiring data from a fifth time point after the fourth time point to a sixth time point from the sound data;
a third determination process for determining, when the volume at each time point from the fifth time point to the sixth time point based on the attenuation at the fourth time point determined in the second determination process is equal to or less than the predetermined threshold, the attenuation of a predetermined volume, which is the volume at each time point from the fifth time point to the sixth time point based on the sound data, to a value that decreases over time for a predetermined time from the fifth time point;
a third output process for outputting the sound at each time point from the fifth time point to the sixth time point of the sound data at a volume of the attenuation at each time point determined in the third determination process;
Run
In the third determination process,
When the maximum value of the predetermined volume is smaller than the predetermined threshold value, the length of the predetermined time is determined to be shorter than when the maximum value of the predetermined volume is equal to the predetermined threshold value;
When the maximum value of the predetermined volume is greater than the predetermined threshold value, the length of the predetermined time is determined to be longer than when the maximum value of the predetermined volume is equal to the predetermined threshold value.
Information processing methods. an acquisition unit that acquires data from a first time point to a second time point from the output sound data;
a determination unit that determines, when a volume of the sound data at the second time point exceeds a predetermined threshold, a degree of attenuation of the volume at each time point from the first time point to the second time point to a value that increases over time;
an output unit that outputs the sound at each time point from the first time point of the sound data at a volume of attenuation at each time point determined by the determination unit;
having
The acquisition unit is
acquiring data from a third time point to a fourth time point between the first time point and the second time point from the sound data;
The determination unit is
When the volume at the fourth time point based on the attenuation degree determined by the determination unit exceeds the predetermined threshold value, the attenuation degree of the volume at each time point from the third time point to the fourth time point is determined to be a value that increases over time,
The output unit is
outputting the sound at each time point from the first time point to the third time point of the sound data at a volume of attenuation at each time point determined by the determination unit;
outputting the sound at each time point from the third time point to the fourth time point of the sound data at a volume of attenuation at each time point determined by the determination unit;
The acquisition unit is
Acquiring data from a fifth time point after the fourth time point to a sixth time point from the sound data;
The determination unit is
When the volume at each time point from the fifth time point to the sixth time point based on the attenuation degree at the fourth time point determined by the determination unit is equal to or less than the predetermined threshold, the attenuation degree of the predetermined volume, which is the volume at each time point from the fifth time point to the sixth time point based on the sound data, is determined to be a value that decreases over time for a predetermined time from the fifth time point,
The output unit is
outputting the sound at each time point from the fifth time point to the sixth time point of the sound data at a volume of attenuation at each time point determined by the determination unit;
The determination unit is
When the maximum value of the predetermined volume is smaller than the predetermined threshold value, the length of the predetermined time is determined to be shorter than when the maximum value of the predetermined volume is equal to the predetermined threshold value;
When the maximum value of the predetermined volume is greater than the predetermined threshold value, the length of the predetermined time is determined to be longer than when the maximum value of the predetermined volume is equal to the predetermined threshold value.
Information processing device.

Images