Binaural rendering method and apparatus for decoding multi channel audio
Disclosed is a binaural rendering method and apparatus for decoding a multichannel audio signal. The binaural rendering method may include: extracting an early reflection component and a late reverberation component from a binaural filter; generating a stereo audio signal by performing binaural rendering of a multichannel audio signal base on the early reflection component; and applying the late reverberation component to the generated stereo audio signal.
1. A binaural rendering method in time domain, comprising:
identifying an early reflection and a late reverberation for a binaural rendering;
performing binaural rendering to convert a loudspeaker signal to a stereo signal based on based on a binaural parameter for each loudspeaker location, using a binaural filter in time domain,
wherein the binaural filter uses the early reflection and the late reverberation for a binaural rendering.
2. The binaural rendering method of claim 1 , wherein the binaural rendering is performed based on binaural parameter with respect to each loudspeaker location of the loudspeaker signal.
3. The binaural rendering method of claim 1 , wherein the binaural rendering is performed by applying the late reverberating after applying the early reflection into the loudspeaker signal.
4. The binaural rendering method of claim 1 , wherein the late reverberation is extracted based on a binaural room impulse response (BRIR) for binaural rendering.
5. A binaural rendering method in frequency domain, comprising:
identifying a loudspeaker signal;
identifying an early reflection and a late reverberation for a binaural rendering;
converting the loudspeaker signal to a stereo audio signal using a binaural render based on the early reflection and the late reverberation,
wherein the binaural render consists of a variable order filtering in frequency domain (VOFF), a sparse frequency reverberator (SFR), and a QMF domain Tapped-Delay Line (QTDL).
6. The binaural rendering method of claim 5 , wherein the early reflection is processed based on bandwise partitioned convolution for binaural rendering.
7. The binaural rendering method of claim 5 , wherein the early reflection is determined based on a binaural room impulse responses (BRIR) in the frequency domain.
8. The binaural rendering method of claim 5 , wherein the late reverberation is scaled based on a result of the analyzing the loudspeaker signal.
9. A binaural renderer in frequency domain, comprising:
one or more processor configured to:
identify an early reflection and a late reverberation for a binaural rendering;
convert a loudspeaker signal to a stereo audio signal by performing binaural rendering,
wherein the binaural rendering is performed based on early reflection and late reverberation,
wherein the binaural rendering is performed by a binaural render including a variable order filtering in frequency domain (VOFF), a sparse frequency reverberator (SFR), and a QMF domain Tapped-Delay Line (QTDL).
10. The binaural renderer of claim 9 , wherein the early reflection is processed based on bandwise partitioned convolution for binaural rendering.
11. The binaural renderer of claim 9 , wherein the early reflection is determined based on a binaural room impulse responses (BRIR) in the frequency domain.
12. The method of claim 9 , wherein the late reverberation is scaled based on a result of the analyzing the loudspeaker signal.