Avoid using a reversed all-pass for the front stablizer

While a neat trick, it's been shown to be too volatile and add noise as the
signal gets louder. It's better to just accept the phase shift and ensure
everything stays aligned.

1 files changed, 6 insertions, 11 deletions

diff --git a/core/front_stablizer.h b/core/front_stablizer.h
index 3d328a8d..6825111a 100644
--- a/core/front_stablizer.h
+++ b/core/front_stablizer.h
@@ -10,27 +10,22 @@
 
 
 struct FrontStablizer {
-    static constexpr size_t DelayLength{256u};
+    FrontStablizer(size_t numchans) : ChannelFilters{numchans} { }
 
-    FrontStablizer(size_t numchans) : DelayBuf{numchans} { }
-
-    alignas(16) std::array<float,BufferLineSize + DelayLength> Side{};
-    alignas(16) std::array<float,BufferLineSize + DelayLength> MidDirect{};
-    alignas(16) std::array<float,DelayLength> MidDelay{};
-
-    alignas(16) std::array<float,BufferLineSize + DelayLength> TempBuf{};
+    alignas(16) std::array<float,BufferLineSize> MidDirect{};
+    alignas(16) std::array<float,BufferLineSize> Side{};
+    alignas(16) std::array<float,BufferLineSize> Temp{};
 
     BandSplitter MidFilter;
     alignas(16) FloatBufferLine MidLF{};
     alignas(16) FloatBufferLine MidHF{};
 
-    using DelayLine = std::array<float,DelayLength>;
-    al::FlexArray<DelayLine,16> DelayBuf;
+    al::FlexArray<BandSplitter,16> ChannelFilters;
 
     static std::unique_ptr<FrontStablizer> Create(size_t numchans)
     { return std::unique_ptr<FrontStablizer>{new(FamCount(numchans)) FrontStablizer{numchans}}; }
 
-    DEF_FAM_NEWDEL(FrontStablizer, DelayBuf)
+    DEF_FAM_NEWDEL(FrontStablizer, ChannelFilters)
 };
 
 #endif /* CORE_FRONT_STABLIZER_H */