Reverberation generation for headphone virtualization
First Claim
1. A method for generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization, comprising:
- selecting a predetermined directional pattern corresponding to a desired perceptual cue;
generating, using the predetermined directional pattern, directionally-controlled reflections that impart the desired perceptual cue to an audio input signal corresponding to a sound source location, wherein the predetermined directional pattern describes how directions of arrival of the directionally-controlled reflections change in relation to a direction of the sound source location as a function of time, and wherein the predetermined directional pattern has a wobble shape in which the directions of arrival of the directionally-controlled reflections change away from the direction of the sound source location and oscillates back and forth as a function of time;
combining at least the generated reflections to obtain the one or more components of the BRIR; and
generating a left-ear and right-ear binaural signal for a playback device based on the BRIR.
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Abstract
The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.
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Citations
20 Claims
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1. A method for generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization, comprising:
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selecting a predetermined directional pattern corresponding to a desired perceptual cue; generating, using the predetermined directional pattern, directionally-controlled reflections that impart the desired perceptual cue to an audio input signal corresponding to a sound source location, wherein the predetermined directional pattern describes how directions of arrival of the directionally-controlled reflections change in relation to a direction of the sound source location as a function of time, and wherein the predetermined directional pattern has a wobble shape in which the directions of arrival of the directionally-controlled reflections change away from the direction of the sound source location and oscillates back and forth as a function of time; combining at least the generated reflections to obtain the one or more components of the BRIR; and generating a left-ear and right-ear binaural signal for a playback device based on the BRIR. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19)
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18. A method for generating left-ear and right-ear binaural signals from one or more audio input signals for headphone presentation comprising:
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determining a sound source location corresponding to each of said one or more audio input signals; convolving each of said one or more audio input signals with one or more components of a BRIR corresponding to the sound source location to obtain left-ear and right-ear intermediate signals, wherein at least one of said components of the BRIR comprises directionally-controlled reflections that impart a desired perceptual cue to said one or more audio input signals respectively, wherein the directionally controlled reflections are generated using a predetermined directional pattern which describes how directions of arrival of the directionally-controlled reflections change in relation to a direction of the sound source location as a function of time, and wherein the predetermined directional pattern has a wobble shape in which the directions of arrival of the directionally-controlled reflections change away from the direction of the sound source location and oscillates back and forth as a function of time; and combining the left-ear intermediate signals to produce the left-ear binaural signal and combining the right-ear intermediate signals to produce the right-ear binaural signal. - View Dependent Claims (20)
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Specification