Audio: Optimize division by speed of sound using fixed-point reciprocal#9160
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lgirdwood merged 1 commit intoJun 26, 2024
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Thanks @ShriramShastry , this saves 1.4 MCPS with 4ch beamformer in TGL platform. I'll review this PR later. |
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The code works correctly, checked with direction_test.m but need to reject due to mistakes in comments, sorry! Can you please fix. This is a quick approve after done.
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Ready to merge, pending the mandatory CI to pass. |
This commit optimizes the division by the speed of sound in the `theoretical_time_differences` function. By precomputing the fixed-point reciprocal of the speed of sound, we eliminate the need for a costly division operation in each iteration. Additionally, a redundant 'if' statement is removed from the 'tdfb_direction_copy_emphasis' function, simplifying the code. Signed-off-by: Shriram Shastry <malladi.sastry@intel.com>
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@wszypelt looks like CI has been pending a while. Good to merge ? |
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@lgirdwood good to merge :) |
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This commit optimizes the division by the speed of sound in the
theoretical_time_differencesfunction. By precomputing the fixed-point reciprocal of the speed of sound, we eliminate the need for a costly division operation in each iteration.