Non-transitory storage medium having stored therein sound processing program, non-transitory storage medium having stored therein information processing program, sound processing method, sound processing device, and non-transitory storage medium having stored therein game program

A sound processing method comprising:

• acquiring sound data;
• setting, in a virtual space, a virtual sound source configured to virtually produce sound based on the sound data and a virtual microphone configured to virtually capture the sound virtually produced by the virtual sound source;
• determining the Doppler effect for the sound produced by the virtual sound source and virtually captured by the virtual microphone based on a first speed of movement in the virtual space of the virtual sound source and/or on a second speed of movement in the virtual space of the virtual microphone, wherein, in the determining of the Doppler effect, the first speed is clamped to a first maximum speed when the first speed of movement in the virtual space of the virtual sound source exceeds the first maximum speed and/or the second speed is clamped to second maximum speed when the second speed of movement in the virtual space of the virtual microphone exceeds the second maximum speed;
• modifying the sound virtually captured by the virtual microphone according to the determined Doppler effect;
• and
• outputting the modified sound.

A sound processing device comprising:

• a controller for receiving a user operation;
• storage configured to store therein sound data;
• and
• a processor configured to at least:
• set, in a virtual space, a virtual sound source configured to virtually produce sound based on the sound data and a virtual microphone configured to virtually capture the sound virtually produced by the virtual sound source;
• determine the Doppler effect for the sound produced by the virtual sound source and virtually captured by the virtual microphone based on a first speed of movement in the virtual space of the virtual sound source and/or on a second speed of movement in the virtual space of the virtual microphone, wherein, in the determining of the Doppler effect, the first speed is clamped to a first maximum speed when the first speed of movement in the virtual space of the virtual sound source exceeds the first maximum speed and/or the second speed is clamped to second maximum speed when the second speed of movement in the virtual space of the virtual microphone exceeds the second maximum speed;
• and
• modify the sound virtually captured by the virtual microphone according to the determined Doppler effect;
• and
• a speaker configured to output the modified sound.

A non-transitory storage medium having stored therein a game program which, when executed by a computer connected to a controller for receiving a user operation, storage for storing therein sound data, and a speaker, causes the computer to perform operations comprising:

• setting at least a first object and a second object in a virtual space;
• receiving, from the controller, an instruction to move the second object in the virtual space;
• reading, from the storage, sound data associated with the first object within a predetermined distance from the second object in the virtual space;
• acquiring sound data for producing sound by the first object;
• moving the second object in response to the instruction to move;
• determining the Doppler effect for the sound produced by the first object and virtually captured by the second object based on a first speed of movement in the virtual space of the first object and/or on a second speed of movement in the virtual space of the second object, wherein, in the determining of the Doppler effect, the first speed is clamped to a first maximum speed when the first speed of movement in the virtual space of the virtual sound source exceeds the first maximum speed and/or the second speed is clamped to second maximum speed when the second speed of movement in the virtual space of the virtual microphone exceeds the second maximum speed;
• modifying the sound virtually captured by the second object according to the determined Doppler effect;
• and
• outputting the modified sound from the speaker.