Floating Point Dither For All

3 files changed, 32 insertions, 98 deletions

diff --git a/plugins/MacAU/Gatelope/Gatelope.cpp b/plugins/MacAU/Gatelope/Gatelope.cpp
index bde6522..3f6ed4e 100755
--- a/plugins/MacAU/Gatelope/Gatelope.cpp
+++ b/plugins/MacAU/Gatelope/Gatelope.cpp
@@ -334,23 +334,15 @@ void		Gatelope::GatelopeKernel::Process(	const Float32 	*inSourceP,
 		
 		flip = !flip;
 		
-		//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/Gatelope/Gatelope.xcodeproj/christopherjohnson.pbxuser b/plugins/MacAU/Gatelope/Gatelope.xcodeproj/christopherjohnson.pbxuser
index 7846c86..fdc4740 100755
--- a/plugins/MacAU/Gatelope/Gatelope.xcodeproj/christopherjohnson.pbxuser
+++ b/plugins/MacAU/Gatelope/Gatelope.xcodeproj/christopherjohnson.pbxuser
@@ -49,15 +49,13 @@
 					PBXFileDataSource_Warnings_ColumnID,
 				);
 			};
-			PBXPerProjectTemplateStateSaveDate = 565571362;
-			PBXWorkspaceStateSaveDate = 565571362;
+			PBXPerProjectTemplateStateSaveDate = 569646970;
+			PBXWorkspaceStateSaveDate = 569646970;
 		};
 		perUserProjectItems = {
 			8B0209A521B3215F00952287 /* PlistBookmark */ = 8B0209A521B3215F00952287 /* PlistBookmark */;
-			8B416D2421B5EF2500DD5013 /* PBXBookmark */ = 8B416D2421B5EF2500DD5013 /* PBXBookmark */;
-			8B416D2921B5FD1F00DD5013 /* PBXTextBookmark */ = 8B416D2921B5FD1F00DD5013 /* PBXTextBookmark */;
-			8B416D2E21B5FD3000DD5013 /* PBXTextBookmark */ = 8B416D2E21B5FD3000DD5013 /* PBXTextBookmark */;
-			8B416D3421B5FD3000DD5013 /* PBXTextBookmark */ = 8B416D3421B5FD3000DD5013 /* PBXTextBookmark */;
+			8B792C9021F41F9A006E9731 /* PBXTextBookmark */ = 8B792C9021F41F9A006E9731 /* PBXTextBookmark */;
+			8B792C9521F420BF006E9731 /* PBXTextBookmark */ = 8B792C9521F420BF006E9731 /* PBXTextBookmark */;
 		};
 		sourceControlManager = 8BD3CCB8148830B20062E48C /* Source Control */;
 		userBuildSettings = {
@@ -75,11 +73,7 @@
 		rLen = 0;
 		rLoc = 9223372036854775808;
 	};
-	8B416D2421B5EF2500DD5013 /* PBXBookmark */ = {
-		isa = PBXBookmark;
-		fRef = 8BA05A660720730100365D66 /* Gatelope.cpp */;
-	};
-	8B416D2921B5FD1F00DD5013 /* PBXTextBookmark */ = {
+	8B792C9021F41F9A006E9731 /* PBXTextBookmark */ = {
 		isa = PBXTextBookmark;
 		fRef = 8BA05A690720730100365D66 /* GatelopeVersion.h */;
 		name = "GatelopeVersion.h: 54";
@@ -89,7 +83,7 @@
 		vrLen = 126;
 		vrLoc = 2816;
 	};
-	8B416D2E21B5FD3000DD5013 /* PBXTextBookmark */ = {
+	8B792C9521F420BF006E9731 /* PBXTextBookmark */ = {
 		isa = PBXTextBookmark;
 		fRef = 8BA05A690720730100365D66 /* GatelopeVersion.h */;
 		name = "GatelopeVersion.h: 54";
@@ -99,22 +93,12 @@
 		vrLen = 126;
 		vrLoc = 2816;
 	};
-	8B416D3421B5FD3000DD5013 /* PBXTextBookmark */ = {
-		isa = PBXTextBookmark;
-		fRef = 8BA05A660720730100365D66 /* Gatelope.cpp */;
-		name = "Gatelope.cpp: 325";
-		rLen = 0;
-		rLoc = 13129;
-		rType = 0;
-		vrLen = 1897;
-		vrLoc = 12493;
-	};
 	8BA05A660720730100365D66 /* Gatelope.cpp */ = {
 		uiCtxt = {
-			sepNavIntBoundsRect = "{{0, 0}, {1082, 5057}}";
-			sepNavSelRange = "{13129, 0}";
-			sepNavVisRange = "{12493, 1897}";
-			sepNavWindowFrame = "{{15, 39}, {1129, 834}}";
+			sepNavIntBoundsRect = "{{0, 0}, {1082, 4979}}";
+			sepNavSelRange = "{13893, 0}";
+			sepNavVisRange = "{12404, 1492}";
+			sepNavWindowFrame = "{{185, 44}, {1129, 834}}";
 		};
 	};
 	8BA05A670720730100365D66 /* Gatelope.exp */ = {
@@ -127,7 +111,7 @@
 	};
 	8BA05A690720730100365D66 /* GatelopeVersion.h */ = {
 		uiCtxt = {
-			sepNavIntBoundsRect = "{{0, 0}, {456, 923}}";
+			sepNavIntBoundsRect = "{{0, 0}, {456, 871}}";
 			sepNavSelRange = "{2884, 4}";
 			sepNavVisRange = "{2816, 126}";
 			sepNavWindowFrame = "{{15, 43}, {705, 830}}";
diff --git a/plugins/MacAU/Gatelope/Gatelope.xcodeproj/christopherjohnson.perspectivev3 b/plugins/MacAU/Gatelope/Gatelope.xcodeproj/christopherjohnson.perspectivev3
index 1a46c04..7009de0 100755
--- a/plugins/MacAU/Gatelope/Gatelope.xcodeproj/christopherjohnson.perspectivev3
+++ b/plugins/MacAU/Gatelope/Gatelope.xcodeproj/christopherjohnson.perspectivev3
@@ -222,48 +222,7 @@
 		</dict>
 	</array>
 	<key>OpenEditors</key>
-	<array>
-		<dict>
-			<key>Content</key>
-			<dict>
-				<key>PBXProjectModuleGUID</key>
-				<string>8B416D3221B5FD3000DD5013</string>
-				<key>PBXProjectModuleLabel</key>
-				<string>Gatelope.cpp</string>
-				<key>PBXSplitModuleInNavigatorKey</key>
-				<dict>
-					<key>Split0</key>
-					<dict>
-						<key>PBXProjectModuleGUID</key>
-						<string>8B416D3321B5FD3000DD5013</string>
-						<key>PBXProjectModuleLabel</key>
-						<string>Gatelope.cpp</string>
-						<key>_historyCapacity</key>
-						<integer>0</integer>
-						<key>bookmark</key>
-						<string>8B416D3421B5FD3000DD5013</string>
-						<key>history</key>
-						<array>
-							<string>8B416D2421B5EF2500DD5013</string>
-						</array>
-					</dict>
-					<key>SplitCount</key>
-					<string>1</string>
-				</dict>
-				<key>StatusBarVisibility</key>
-				<true/>
-			</dict>
-			<key>Geometry</key>
-			<dict>
-				<key>Frame</key>
-				<string>{{0, 20}, {1129, 737}}</string>
-				<key>PBXModuleWindowStatusBarHidden2</key>
-				<false/>
-				<key>RubberWindowFrame</key>
-				<string>15 95 1129 778 0 0 1440 878 </string>
-			</dict>
-		</dict>
-	</array>
+	<array/>
 	<key>PerspectiveWidths</key>
 	<array>
 		<integer>815</integer>
@@ -365,7 +324,7 @@
 							<real>288</real>
 						</array>
 						<key>RubberWindowFrame</key>
-						<string>46 385 815 372 0 0 1440 878 </string>
+						<string>278 409 815 372 0 0 1440 878 </string>
 					</dict>
 					<key>Module</key>
 					<string>PBXSmartGroupTreeModule</string>
@@ -393,11 +352,11 @@
 										<key>_historyCapacity</key>
 										<integer>0</integer>
 										<key>bookmark</key>
-										<string>8B416D2E21B5FD3000DD5013</string>
+										<string>8B792C9521F420BF006E9731</string>
 										<key>history</key>
 										<array>
 											<string>8B0209A521B3215F00952287</string>
-											<string>8B416D2921B5FD1F00DD5013</string>
+											<string>8B792C9021F41F9A006E9731</string>
 										</array>
 									</dict>
 									<key>SplitCount</key>
@@ -411,18 +370,18 @@
 							<key>GeometryConfiguration</key>
 							<dict>
 								<key>Frame</key>
-								<string>{{0, 0}, {505, 67}}</string>
+								<string>{{0, 0}, {505, 50}}</string>
 								<key>RubberWindowFrame</key>
-								<string>46 385 815 372 0 0 1440 878 </string>
+								<string>278 409 815 372 0 0 1440 878 </string>
 							</dict>
 							<key>Module</key>
 							<string>PBXNavigatorGroup</string>
 							<key>Proportion</key>
-							<string>67pt</string>
+							<string>50pt</string>
 						</dict>
 						<dict>
 							<key>Proportion</key>
-							<string>259pt</string>
+							<string>276pt</string>
 							<key>Tabs</key>
 							<array>
 								<dict>
@@ -436,7 +395,7 @@
 									<key>GeometryConfiguration</key>
 									<dict>
 										<key>Frame</key>
-										<string>{{10, 27}, {505, 232}}</string>
+										<string>{{10, 27}, {505, 249}}</string>
 									</dict>
 									<key>Module</key>
 									<string>XCDetailModule</string>
@@ -490,9 +449,9 @@
 									<key>GeometryConfiguration</key>
 									<dict>
 										<key>Frame</key>
-										<string>{{10, 27}, {505, 232}}</string>
+										<string>{{10, 27}, {505, 249}}</string>
 										<key>RubberWindowFrame</key>
-										<string>46 385 815 372 0 0 1440 878 </string>
+										<string>278 409 815 372 0 0 1440 878 </string>
 									</dict>
 									<key>Module</key>
 									<string>PBXBuildResultsModule</string>
@@ -520,11 +479,11 @@
 			</array>
 			<key>TableOfContents</key>
 			<array>
-				<string>8B416D2F21B5FD3000DD5013</string>
+				<string>8B792C9621F420BF006E9731</string>
 				<string>1CA23ED40692098700951B8B</string>
-				<string>8B416D3021B5FD3000DD5013</string>
+				<string>8B792C9721F420BF006E9731</string>
 				<string>8BD7274A1D46E5A5000176F0</string>
-				<string>8B416D3121B5FD3000DD5013</string>
+				<string>8B792C9821F420BF006E9731</string>
 				<string>1CA23EDF0692099D00951B8B</string>
 				<string>1CA23EE00692099D00951B8B</string>
 				<string>1CA23EE10692099D00951B8B</string>
@@ -697,7 +656,7 @@
 	<key>StatusbarIsVisible</key>
 	<true/>
 	<key>TimeStamp</key>
-	<real>565574960.58745801</real>
+	<real>569647295.48975003</real>
 	<key>ToolbarConfigUserDefaultsMinorVersion</key>
 	<string>2</string>
 	<key>ToolbarDisplayMode</key>
@@ -714,11 +673,10 @@
 	<integer>5</integer>
 	<key>WindowOrderList</key>
 	<array>
-		<string>8B416D3221B5FD3000DD5013</string>
 		<string>/Users/christopherjohnson/Desktop/MacAU/Gatelope/Gatelope.xcodeproj</string>
 	</array>
 	<key>WindowString</key>
-	<string>46 385 815 372 0 0 1440 878 </string>
+	<string>278 409 815 372 0 0 1440 878 </string>
 	<key>WindowToolsV3</key>
 	<array>
 		<dict>