commit 4ec817dbf9ad11dbcf2fae2b706c260a952639db
author Andy Hung <hunga@google.com> Mon Dec 11 18:29:23 2023 +0000
committer Gerrit Code Review <noreply-gerritcodereview@google.com> Mon Dec 11 18:29:23 2023 +0000
tree f6453d5bc4e16d4685011552a7e5ebb64748c9c6
parent 6bfb6843855c86bfe785e47d47e335d3b524c866
parent a322af669f6074abff02bb3311f695d17ee51691

Merge "Use expf() instead of an approximation" into main

media/libeffects/loudness/dsp/core/dynamic_range_compression.cpp

diff --git a/media/libeffects/loudness/dsp/core/dynamic_range_compression.cpp b/media/libeffects/loudness/dsp/core/dynamic_range_compression.cpp
index 578f58a..33f6779 100644
--- a/media/libeffects/loudness/dsp/core/dynamic_range_compression.cpp
+++ b/media/libeffects/loudness/dsp/core/dynamic_range_compression.cpp
@@ -89,8 +89,7 @@
   } else {
     state_ = alpha_release_ * state_ + (1.0f - alpha_release_) * cv;
   }
-  compressor_gain_ *=
-      math::ExpApproximationViaTaylorExpansionOrder5(state_ - prev_state);
+  compressor_gain_ *= expf(state_ - prev_state);
   x *= compressor_gain_;
   if (x > kFixedPointLimit) {
     return kFixedPointLimit;
@@ -118,8 +117,7 @@
   } else {
     state_ = alpha_release_ * state_ + (1.0f - alpha_release_) * cv;
   }
-  compressor_gain_ *=
-      math::ExpApproximationViaTaylorExpansionOrder5(state_ - prev_state);
+  compressor_gain_ *= expf(state_ - prev_state);
   *x1 *= compressor_gain_;
   if (*x1 > kFixedPointLimit) {
     *x1 = kFixedPointLimit;