Version 0.9

Added: Filter type "IIR", which allows to specify a user-defined IIR filter of arbitrary order with custom coefficients.
Improved: For playback devices, the APO is now installed both as GFX (post-mix) and LFX (pre-mix) APO. Normally the filtering happens in GFX, but the command "Stage" allows to select LFX to apply effects based on the number of input channels.
Added: Expression language. The commands "If", "ElseIf", "Else", "EndIf", "Eval" and inline expressions allow to change the filter behaviour based on runtime conditions.
Added: Command "Copy", which copies audio data between channels.
Added: Command "Delay", which delays the audio on the currently selected channels.
Improved: Configuration files are now locked exclusively for writing while reading them.
Improved: There is now a transition (10 ms) from old to new configuration after loading.
Improved: Substantial internal restructuring to improve extensibility and maintainability. Filtering commands now work exactly in the order they were specified.
Fixed: When the microphone input was in stereo but the application requested a mono stream, the audio was heavily distorted.
Fixed: The sine sweep generated by the Benchmark application had floating-point precision issues leading to severe artifacts when certain filters were applied.

Setup/Setup.nsi

@@ -118,6 +118,7 @@ Section "Install" SecInstall
   File "${LIBPATH}\msvcr100.dll"
   
   File "Configuration tutorial (online).url"
+  File "Configuration reference (online).url"
   
   CreateDirectory "$INSTDIR\config"
   
@@ -126,6 +127,8 @@ Section "Install" SecInstall
   File /oname=config\example.txt "config\example.txt"
   File /oname=config\demo.txt "config\demo.txt"
   File /oname=config\multichannel.txt "config\multichannel.txt"
+  File /oname=config\iir_lowpass.txt "config\iir_lowpass.txt"
+  File /oname=config\selective_delay.txt "config\selective_delay.txt"
   SetOverwrite on
 
   ;Grant write access to the config directory for all users
@@ -141,6 +144,7 @@ Section "Install" SecInstall
   ;Create shortcuts
   CreateDirectory "$SMPROGRAMS\$StartMenuFolder"
   CreateShortCut "$SMPROGRAMS\$StartMenuFolder\Configuration tutorial (online).lnk" "$INSTDIR\Configuration tutorial (online).url"
+  CreateShortCut "$SMPROGRAMS\$StartMenuFolder\Configuration reference (online).lnk" "$INSTDIR\Configuration reference (online).url"
   CreateShortCut "$SMPROGRAMS\$StartMenuFolder\Configurator.lnk" "$INSTDIR\Configurator.exe"
   CreateShortCut "$SMPROGRAMS\$StartMenuFolder\Benchmark.lnk" "$INSTDIR\Benchmark.exe"
   CreateShortCut "$SMPROGRAMS\$StartMenuFolder\Uninstall.lnk" "$INSTDIR\Uninstall.exe"
@@ -184,6 +188,7 @@ Section "-un.Uninstall"
   !insertmacro MUI_STARTMENU_GETFOLDER Application $StartMenuFolder
   RMDir /r "$SMPROGRAMS\$StartMenuFolder"
   
+  Delete "$INSTDIR\Configuration reference (online).url"
   Delete "$INSTDIR\Configuration tutorial (online).url"
   
   Delete /REBOOTOK "$INSTDIR\msvcr100.dll"