Audio signal processing method and apparatus using ambisonics signal
AssigneeGaudio Lab, Inc.
InventorsJeonghun Seo, Sangbae Chon
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Abstract
Disclosed is an audio signal processing apparatus for rendering an input audio signal. The audio signal processing apparatus may include a processor configured to obtain an input audio signal including an ambisonics signal and a non-diegetic channel difference signal, render the ambisonics signal to generate a first output audio signal, mix the first output audio signal and the non-diegetic channel difference signal to generate a second output audio signal, and output the second output audio signal.
Claims20
An audio signal processing apparatus for generating an output audio signal, the audio signal processing apparatus comprising a processor configured to:
- obtain an input audio signal comprising a first ambisonics signal and a non-diegetic channel signal;
- generate a second ambisonics signal comprising only a signal corresponding to a predetermined signal component among a plurality of signal components included in an ambisonics format of the first ambisonics signal based on the non-diegetic channel signal;
- and
- generate an output audio signal including a third ambisonics signal obtained by synthesizing the second ambisonics signal and the first ambisonics signal for each signal component,
- wherein the non-diegetic channel signal represents an audio signal forming an audio scene fixed with respect to a listener, and the predetermined signal component is a signal component representing the sound pressure of a sound field at a point at which an ambisonics signal has been collected.
An audio signal processing apparatus for rendering an input audio signal, the audio signal processing apparatus comprising a processor configured to:
- obtain an input audio signal comprising an ambisonics signal and a non-diegetic channel difference signal;
- render the ambisonics signal to generate a first output audio signal;
- mix the first output audio signal and the non-diegetic channel difference signal to generate a second output audio signal;
- and
- output the second output audio signal;
- wherein the non-diegetic channel difference signal is a difference signal representing a difference between a first channel signal and a second channel signal constituting a 2-channel audio signal, and the first channel signal and the second channel signal are audio signals forming an audio scene fixed with respect to a listener.
A method for operating an audio signal processing apparatus for rendering an input audio signal, the method comprising:
- obtaining an input audio signal comprising an ambisonics signal and a non-diegetic channel difference;
- rendering the ambisonics signal to generate a first output audio signal;
- mixing the first output audio signal and the non-diegetic channel difference signal to generate a second output audio signal;
- and
- outputting the second output audio signal,
- wherein the non-diegetic channel difference signal is a difference signal representing a difference between a first channel signal and a second channel signal constituting a 2-channel audio signal, and the first channel signal and the second channel signal are audio signals forming an audio scene fixed with respect to a listener.
Dependencies are inferred from the claim text.