Floating Point Dither For All

3 files changed, 40 insertions, 51 deletions

diff --git a/plugins/MacAU/DubSub/DubSub.cpp b/plugins/MacAU/DubSub/DubSub.cpp
index 3d375c7..49a371b 100755
--- a/plugins/MacAU/DubSub/DubSub.cpp
+++ b/plugins/MacAU/DubSub/DubSub.cpp
@@ -523,23 +523,14 @@ void		DubSub::DubSubKernel::Process(	const Float32 	*inSourceP,
 		bflip++;
 		if (bflip < 1 || bflip > 3) bflip = 1;
 		
-		
-		//noise shaping to 32-bit floating point
-		Float32 fpTemp = inputSample;
-		fpNShape += (inputSample-fpTemp);
-		inputSample += fpNShape;
-		//for deeper space and warmth, we try a non-oscillating noise shaping
-		//that is kind of ruthless: it will forever retain the rounding errors
-		//except we'll dial it back a hair at the end of every buffer processed
-		//end noise shaping on 32 bit output
+		//32 bit dither, made small and tidy.
+		int expon; frexpf((Float32)inputSample, &expon);
+		long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+		inputSample += (dither-fpNShape); fpNShape = dither;
+		//end 32 bit dither
 		
 		*destP = inputSample;
 		
 		sourceP += inNumChannels; destP += inNumChannels;
 	}
-	fpNShape *= 0.999999;
-	//we will just delicately dial back the FP noise shaping, not even every sample
-	//this is a good place to put subtle 'no runaway' calculations, though bear in mind
-	//that it will be called more often when you use shorter sample buffers in the DAW.
-	//So, very low latency operation will call these calculations more often.	
 }
diff --git a/plugins/MacAU/DubSub/DubSub.xcodeproj/christopherjohnson.pbxuser b/plugins/MacAU/DubSub/DubSub.xcodeproj/christopherjohnson.pbxuser
index 1b78563..0bf9966 100755
--- a/plugins/MacAU/DubSub/DubSub.xcodeproj/christopherjohnson.pbxuser
+++ b/plugins/MacAU/DubSub/DubSub.xcodeproj/christopherjohnson.pbxuser
@@ -49,43 +49,43 @@
 					PBXFileDataSource_Warnings_ColumnID,
 				);
 			};
-			PBXPerProjectTemplateStateSaveDate = 560565055;
-			PBXWorkspaceStateSaveDate = 560565055;
+			PBXPerProjectTemplateStateSaveDate = 569602135;
+			PBXWorkspaceStateSaveDate = 569602135;
 		};
 		perUserProjectItems = {
-			8B42FE3E21698BC50092969A /* PBXTextBookmark */ = 8B42FE3E21698BC50092969A /* PBXTextBookmark */;
-			8B42FE3F21698BC50092969A /* PBXTextBookmark */ = 8B42FE3F21698BC50092969A /* PBXTextBookmark */;
+			8B792B7521F3708C006E9731 /* PBXTextBookmark */ = 8B792B7521F3708C006E9731 /* PBXTextBookmark */;
+			8B792B7A21F3709C006E9731 /* PBXTextBookmark */ = 8B792B7A21F3709C006E9731 /* PBXTextBookmark */;
 		};
 		sourceControlManager = 8BD3CCB8148830B20062E48C /* Source Control */;
 		userBuildSettings = {
 		};
 	};
-	8B42FE3E21698BC50092969A /* PBXTextBookmark */ = {
+	8B792B7521F3708C006E9731 /* PBXTextBookmark */ = {
 		isa = PBXTextBookmark;
 		fRef = 8BA05A660720730100365D66 /* DubSub.cpp */;
 		name = "DubSub.cpp: 521";
 		rLen = 0;
 		rLoc = 22045;
 		rType = 0;
-		vrLen = 160;
-		vrLoc = 21949;
+		vrLen = 68;
+		vrLoc = 21996;
 	};
-	8B42FE3F21698BC50092969A /* PBXTextBookmark */ = {
+	8B792B7A21F3709C006E9731 /* PBXTextBookmark */ = {
 		isa = PBXTextBookmark;
 		fRef = 8BA05A660720730100365D66 /* DubSub.cpp */;
 		name = "DubSub.cpp: 521";
 		rLen = 0;
 		rLoc = 22045;
 		rType = 0;
-		vrLen = 160;
-		vrLoc = 21915;
+		vrLen = 68;
+		vrLoc = 21996;
 	};
 	8BA05A660720730100365D66 /* DubSub.cpp */ = {
 		uiCtxt = {
-			sepNavIntBoundsRect = "{{0, 0}, {663, 7241}}";
+			sepNavIntBoundsRect = "{{0, 0}, {554, 7072}}";
 			sepNavSelRange = "{22045, 0}";
-			sepNavVisRange = "{21915, 160}";
-			sepNavWindowFrame = "{{749, 66}, {1145, 812}}";
+			sepNavVisRange = "{21996, 68}";
+			sepNavWindowFrame = "{{1, 41}, {1145, 812}}";
 		};
 	};
 	8BA05A670720730100365D66 /* DubSub.exp */ = {
@@ -108,16 +108,16 @@
 		uiCtxt = {
 			sepNavIntBoundsRect = "{{0, 0}, {1098, 767}}";
 			sepNavSelRange = "{2869, 0}";
-			sepNavVisRange = "{68, 2869}";
+			sepNavVisRange = "{49, 2888}";
 			sepNavWindowFrame = "{{295, 66}, {1145, 812}}";
 		};
 	};
 	8BC6025B073B072D006C4272 /* DubSub.h */ = {
 		uiCtxt = {
-			sepNavIntBoundsRect = "{{0, 0}, {824, 2392}}";
-			sepNavSelRange = "{3332, 0}";
-			sepNavVisRange = "{2519, 1677}";
-			sepNavWindowFrame = "{{832, 72}, {608, 806}}";
+			sepNavIntBoundsRect = "{{0, 0}, {824, 2756}}";
+			sepNavSelRange = "{6097, 1035}";
+			sepNavVisRange = "{6232, 1033}";
+			sepNavWindowFrame = "{{26, 54}, {608, 806}}";
 		};
 	};
 	8BD3CCB8148830B20062E48C /* Source Control */ = {
diff --git a/plugins/MacAU/DubSub/DubSub.xcodeproj/christopherjohnson.perspectivev3 b/plugins/MacAU/DubSub/DubSub.xcodeproj/christopherjohnson.perspectivev3
index 5e22a02..b95829d 100755
--- a/plugins/MacAU/DubSub/DubSub.xcodeproj/christopherjohnson.perspectivev3
+++ b/plugins/MacAU/DubSub/DubSub.xcodeproj/christopherjohnson.perspectivev3
@@ -256,8 +256,6 @@
 			<key>Layout</key>
 			<array>
 				<dict>
-					<key>BecomeActive</key>
-					<true/>
 					<key>ContentConfiguration</key>
 					<dict>
 						<key>PBXBottomSmartGroupGIDs</key>
@@ -324,7 +322,7 @@
 							<real>185</real>
 						</array>
 						<key>RubberWindowFrame</key>
-						<string>625 371 810 487 0 0 1440 878 </string>
+						<string>412 359 810 487 0 0 1440 878 </string>
 					</dict>
 					<key>Module</key>
 					<string>PBXSmartGroupTreeModule</string>
@@ -352,10 +350,10 @@
 										<key>_historyCapacity</key>
 										<integer>0</integer>
 										<key>bookmark</key>
-										<string>8B42FE3F21698BC50092969A</string>
+										<string>8B792B7A21F3709C006E9731</string>
 										<key>history</key>
 										<array>
-											<string>8B42FE3E21698BC50092969A</string>
+											<string>8B792B7521F3708C006E9731</string>
 										</array>
 									</dict>
 									<key>SplitCount</key>
@@ -369,18 +367,18 @@
 							<key>GeometryConfiguration</key>
 							<dict>
 								<key>Frame</key>
-								<string>{{0, 0}, {603, 117}}</string>
+								<string>{{0, 0}, {603, 69}}</string>
 								<key>RubberWindowFrame</key>
-								<string>625 371 810 487 0 0 1440 878 </string>
+								<string>412 359 810 487 0 0 1440 878 </string>
 							</dict>
 							<key>Module</key>
 							<string>PBXNavigatorGroup</string>
 							<key>Proportion</key>
-							<string>117pt</string>
+							<string>69pt</string>
 						</dict>
 						<dict>
 							<key>Proportion</key>
-							<string>324pt</string>
+							<string>372pt</string>
 							<key>Tabs</key>
 							<array>
 								<dict>
@@ -394,9 +392,7 @@
 									<key>GeometryConfiguration</key>
 									<dict>
 										<key>Frame</key>
-										<string>{{10, 27}, {603, 297}}</string>
-										<key>RubberWindowFrame</key>
-										<string>625 371 810 487 0 0 1440 878 </string>
+										<string>{{10, 27}, {603, 345}}</string>
 									</dict>
 									<key>Module</key>
 									<string>XCDetailModule</string>
@@ -450,7 +446,9 @@
 									<key>GeometryConfiguration</key>
 									<dict>
 										<key>Frame</key>
-										<string>{{10, 27}, {603, 414}}</string>
+										<string>{{10, 27}, {603, 345}}</string>
+										<key>RubberWindowFrame</key>
+										<string>412 359 810 487 0 0 1440 878 </string>
 									</dict>
 									<key>Module</key>
 									<string>PBXBuildResultsModule</string>
@@ -478,11 +476,11 @@
 			</array>
 			<key>TableOfContents</key>
 			<array>
-				<string>8B42FE4021698BC50092969A</string>
+				<string>8B792B7B21F3709C006E9731</string>
 				<string>1CA23ED40692098700951B8B</string>
-				<string>8B42FE4121698BC50092969A</string>
+				<string>8B792B7C21F3709C006E9731</string>
 				<string>8BE6256A2157A03900E4E476</string>
-				<string>8B42FE4221698BC50092969A</string>
+				<string>8B792B7D21F3709C006E9731</string>
 				<string>1CA23EDF0692099D00951B8B</string>
 				<string>1CA23EE00692099D00951B8B</string>
 				<string>1CA23EE10692099D00951B8B</string>
@@ -635,7 +633,7 @@
 	<key>StatusbarIsVisible</key>
 	<true/>
 	<key>TimeStamp</key>
-	<real>560565189.36784196</real>
+	<real>569602204.74752998</real>
 	<key>ToolbarConfigUserDefaultsMinorVersion</key>
 	<string>2</string>
 	<key>ToolbarDisplayMode</key>
@@ -652,11 +650,11 @@
 	<integer>5</integer>
 	<key>WindowOrderList</key>
 	<array>
-		<string>8B42FE4321698BC50092969A</string>
+		<string>8B792B7E21F3709C006E9731</string>
 		<string>/Users/christopherjohnson/Desktop/MacAU/DubSub/DubSub.xcodeproj</string>
 	</array>
 	<key>WindowString</key>
-	<string>625 371 810 487 0 0 1440 878 </string>
+	<string>412 359 810 487 0 0 1440 878 </string>
 	<key>WindowToolsV3</key>
 	<array>
 		<dict>