Signal processing device, signal processing method, and program

A signal processing method comprising:

• causing a signal processing device to
• acquire audio data of an audio object and metadata including position information indicating a position of the audio object and direction information indicating a direction of the audio object, and
• generate a reproduction signal for reproducing a sound of the audio object at a listening position on a basis of listening position information indicating the listening position, listener direction information indicating a direction of a listener at the listening position, the position information, the direction information, and the audio data, wherein
• the reproduction signal is generated on a basis of directional characteristic data indicating a directional characteristic of the audio object, the listening position information, the listener direction information, the position information, the direction information, and the audio data;
• and
• the directional characteristic data has a value of an ID indicating the audio object type, an azimuth angle and elevation angle indicating a direction viewed from the audio object, and a distance from the audio object as arguments of function.

A non-transitory computer readable medium storing instructions that, when executed by a computer, cause the computer to execute the processes of:

• acquiring audio data of an audio object and metadata including position information indicating a position of the audio object and direction information indicating a direction of the audio object;
• and
• generating a reproduction signal for reproducing a sound of the audio object at a listening position on a basis of listening position information indicating the listening position, listener direction information indicating a direction of a listener at the listening position, the position information, the direction information, and the audio data, wherein
• the reproduction signal is generated on a basis of directional characteristic data indicating a directional characteristic of the audio object, the listening position information, the listener direction information, the position information, the direction information, and the audio data;
• and
• the directional characteristic data has a value of an ID indicating the audio object type, an azimuth angle and elevation angle indicating a direction viewed from the audio object, and a distance from the audio object as arguments of function.