Acoustic signal processing device, acoustic signal processing method, and recording medium

An acoustic signal processing device comprising:

• an obtainer that obtains location information indicating a location of an object in a virtual space, and second shape information indicating a shape of the object and including one or more thicknesses at one or more points of one or more sub-objects forming the object;
• a detector that detects a moving speed of the object in the virtual space, based on the location information obtained;
• a generator that generates a first acoustic signal indicating an aerodynamic sound generated by the object, based on the moving speed detected and the second shape information obtained;
• and
• an outputter that outputs the first acoustic signal generated, wherein
• the generator
• calculates one or more frequencies of aerodynamic sounds generated at the one or more points while the object is moving at the moving speed detected, based on the one or more thicknesses indicated by the second shape information obtained,
• generates one or more second acoustic signals by processing white noise signals at band pass filters each having, as a center frequency, one of the one or more frequencies calculated, and
• generates, as the first acoustic signal, one second acoustic signal or a combination of two or more second acoustic signals out of the one or more second acoustic signals generated.

An acoustic signal processing method comprising:

• obtaining location information indicating a location of an object in a virtual space, and first shape information indicating a shape of the object and used for generating a video of the object in the virtual space;
• detecting a moving speed of the object in the virtual space, based on the location information obtained;
• generating a first acoustic signal indicating an aerodynamic sound generated by the object, based on the moving speed detected and the first shape information obtained;
• and
• outputting the first acoustic signal generated.