Filtering for spatial audio rendering

摘要

In one embodiment, spatial audio rendering is achieved by dividing a digitally formatted audio signal into a plurality of time-overlapping windows. The windows may be converted into the frequency domain. Frequency-domain windows are stored in respective cyclical buffers. Windows corresponding to identified reverberation paths are selected and processed (e.g., filtered) according to the characteristics of the respective reverberation path. Processed frequency-domain windows are accumulated and transformed back to the time domain. In one embodiment, head-related transfer functions (HRTFs) are imposed on the frequency-domain windows as a component of the processing.