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Producing headphone driver signals in a digital audio signal processing binaural rendering environment

  • US 10,187,740 B2
  • Filed: 09/23/2016
  • Issued: 01/22/2019
  • Est. Priority Date: 09/23/2016
  • Status: Active Grant
First Claim
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1. A method for rendering a sound program in a binaural rendering environment for headphones, comprising:

  • receiving an indication of diffuse audio in a sound program;

    receiving an indication of direct audio in the sound program;

    analyzing a plurality of candidate binaural room impulse responses (BRIRs) to determine a BRIR suitable for diffuse content and another BRIR suitable for direct content;

    selecting the BRIR suitable for diffuse content as a selected first BRIR, and selecting the BRIR suitable for direct content as a selected second BRIR;

    performing a first binaural rendering process on the diffuse audio to produce a plurality of first intermediate signals, wherein the first binaural rendering process applies the selected first BRIR and a first head related transfer function (HRTF) to the diffuse audio;

    performing a second binaural rendering process on the direct audio to produce a plurality of second intermediate signals, wherein the second binaural rendering process applies the selected second BRIR and a second HRTF to the direct audio; and

    summing the first and second intermediate signals to produce a plurality of headphone driver signals that are to drive the headphones.

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