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 renderer in time domain, comprising:
one or more processor configured to:
identify a loudspeaker signal; and
perform binaural rendering by converting the loudspeaker signal into the stereo audio signal based on a binaural parameter for each loudspeaker location, using a binaural filter in time domain,
wherein the binaural filter applies early reflection and a late reverberation for a binaural rendering;
wherein a transition from the early reflection to the late reverberation is related to number of QMF bands.
2. The binaural renderer of claim 1 , wherein the binaural rendering is performed by applying the late reverberating after applying the early reflection into the multichannel signal.
3. The binaural renderer of claim 1 , wherein the late reverberation is extracted based on a binaural room impulse response (BRIR) for binaural rendering.
4. A binaural renderer in frequency domain, comprising:
one or more processor configured to:
determine an early reflection and a late reverberation for a binaural rendering;
convert a multichannel audio signal to a stereo audio signal by performing binaural rendering for the multichannel audio signal using a binaural render in frequency domain,
wherein the binaural rendering is performed based on early reflection and 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).
5. The binaural renderer of claim 4 , wherein the early reflection is processed based on bandwise partitioned convolution for binaural rendering.
6. The binaural renderer of claim 4 , wherein the early reflection is determined based on a binaural room impulse responses (BRIR) in the frequency domain.
7. The method of claim 4 , wherein the late reverberation is scaled based on a result of the analyzing the multichannel audio signal.
8. A binaural rendering in frequency domain, comprising:
determining an early reflection and a late reverberation for a binaural rendering;
converting a multichannel audio signal to a stereo audio signal by performing binaural rendering for the multichannel audio signal using a binaural render in frequency domain,
wherein the binaural rendering is performed based on early reflection and 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).
9. The binaural rendering method of claim 8 , wherein the early reflection is processed based on bandwise partitioned convolution for binaural rendering.
10. The binaural rendering method of claim 8 , wherein the early reflection is determined based on a binaural room impulse responses (BRIR) in the frequency domain.
11. The binaural rendering method of claim 8 , wherein the late reverberation is scaled based on a result of the analyzing the multichannel audio signal.