Fitting background ambiance to sound objects
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United States of America Patent
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May 29, 2018
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app pub date -
Sep 28, 2016
filing date -
Sep 28, 2016
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Abstract
Embodiments of these teachings concern integrating a sound object audio file such as an audio object recorded by a lavalier microphone to a spatial audio signal. First the sound object audio file is obtained and then a direction and an active duration of the sound object audio file is determined. The spatial audio signal is compiled from audio signals of multiple microphones and could be pre-recorded and obtained after the fact. Then, using the determined direction, the sound object audio file is integrated with the spatial audio signal over the active duration. If there are further moving sound sources to integrate the same procedure is followed for them all individually. One technique specifically shown herein to find the optimized direction and starting time is steered response power (SRP) with phase transform weighting (PHAT).
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