Patent ID: 11950080
Assignee: GAUDIO LAB, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An audio signal processing device rendering an audio signal including a first element signal,
the device comprising a processor for obtaining the audio signal including the first element signal and metadata including a first element reference distance information indicating a reference distance of the first element signal, and rendering the first element signal on the basis of the first element reference distance information, wherein:
the audio signal including the first element signal includes a second element signal which is simultaneously rendered with the first element signal;
the metadata is able to include second element distance information indicating a distance of the second element signal;
a number of bits required for representing the first element reference distance information is smaller than a number of bits required for representing the second element distance information;
a set of reference distances which is able to be represented by the first element reference distance information is a subset of a set of distances which is able to be represented by the second element distance information,
the first element signal is a channel signal or an ambisonics signal, and the second element signal is an object signal, and
the reference distance of the first element signal represents a radius of a circumference of a speaker layout required to render the first element signal when a listener is position in a sweet spot in a virtual space expressed by the first element signal,
wherein a minimum reference distance which is able to be indicated by the first element reference distance information is a predetermined positive number greater than 0.