Sound signal processing method, sound signal processing device, and storage medium that stores sound signal processing program
AssigneeYamaha Corporation
InventorsDai Hashimoto, Takayuki Watanabe
Life of this patent
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Abstract
The sound signal processing method includes obtaining a sound signal of a sound source, convolving, according to a location of the sound source an impulse response of an early reflection sound with the sound signal to generate an early reflection sound control signal that reproduces an early reflection sound, and convolving an impulse response of a reverberant sound with the sound signal to generate a reverberant sound control signal that reproduces a reverberant sound.
Claims15
A sound signal processing method comprising:
- obtaining a sound signal of a sound source;
- obtaining a location of the sound source in a predetermined space having a plurality of areas that are disposed outside each other;
- determining, based on the location of the sound source in the predetermined space, an area among the plurality of areas of the predetermined space that the sound source is located in;
- convolving, according to the area among the plurality of areas of the predetermined space that the sound source is located in, an impulse response of an early reflection sound with the sound signal to generate an early reflection sound control signal that reproduces an early reflection sound;
- and
- convolving an impulse response of a reverberant sound with the sound signal to generate a reverberant sound control signal that reproduces a reverberant sound.
A sound signal processing device comprising:
- a sound signal obtainer that obtains a sound signal of a sound source;
- a sound source locator that obtains a location of the sound source in a predetermined space having a plurality of areas that are disposed outside each other and that determines, based on the location of the sound source in the predetermined space, an area among the plurality of areas of the predetermined space that the sound source is located in;
- an early reflection sound control signal generator that convolves, according to the area among the plurality of areas of the predetermined space that the sound source is located in, an impulse response of an early reflection sound with the sound signal to generate an early reflection sound control signal that reproduces an early reflection sound;
- and
- a reverberant sound control signal generator that convolves an impulse response of a reverberant sound with the sound signal to generate a reverberant sound control signal that reproduces a reverberant sound.
A non-transitory computer-readable storage medium storing a sound signal processing program that causes a sound signal processing device to execute processing of:
- obtaining a sound signal of a sound source;
- obtaining a location of the sound source in a predetermined space having a plurality of areas that are disposed outside each other;
- determining, based on the location of the sound source in the predetermined space, an area among the plurality of areas of the predetermined space that the sound source is located in;
- convolving, according to the area among the plurality of areas of the predetermined space that the sound source is located in, an impulse response of an early reflection sound with the sound signal to generate an early reflection sound control signal that reproduces an early reflection sound;
- and
- convolving an impulse response of a reverberant sound with the sound signal to generate a reverberant sound control signal that reproduces a reverberant sound.
Dependencies are inferred from the claim text.