Use the IIR filter for UHJ by default

Now that it doesn't cause the distortion like before, the IIR implementation
provides a very wide pass-band with the lowest CPU requirements. If maintaining
the original phase is important, fir256 and fir512 are still available, given
whether lower CPU use or a wider pass-band is more important.

2 files changed, 3 insertions, 3 deletions

diff --git a/alsoftrc.sample b/alsoftrc.sample
index 84b5d3bc..d575adc3 100644
--- a/alsoftrc.sample
+++ b/alsoftrc.sample
@@ -362,12 +362,12 @@
 #           exhibiting attenuation in the lower and higher frequency bands.
 #  fir512 - utilizes a 512-point FIR filter, providing a wider pass-band than
 #           fir256, at the cost of more CPU use.
-#decode-filter = fir256
+#decode-filter = iir
 
 ## encode-filter: (global)
 #  Specifies the all-pass filter type for UHJ output encoding. Valid values are
 #  the same as for decode-filter.
-#encode-filter = fir256
+#encode-filter = iir
 
 ##
 ## Reverb effect stuff (includes EAX reverb)
diff --git a/core/uhjfilter.h b/core/uhjfilter.h
index 48c379dd..0cdd0f90 100644
--- a/core/uhjfilter.h
+++ b/core/uhjfilter.h
@@ -16,7 +16,7 @@ enum class UhjQualityType : uint8_t {
     IIR = 0,
     FIR256,
     FIR512,
-    Default = FIR256
+    Default = IIR
 };
 
 extern UhjQualityType UhjDecodeQuality;