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Commit 4ec817db authored by Andy Hung's avatar Andy Hung Committed by Gerrit Code Review
Browse files

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

parents 6bfb6843 a322af66

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

+2 −4
Original line number Diff line number Diff line
@@ -89,8 +89,7 @@ float AdaptiveDynamicRangeCompression::Compress(float x) { 
  } 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 @@ void AdaptiveDynamicRangeCompression::Compress(float *x1, float *x2) { 
  } 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;