Floating Point Dither For All

3 files changed, 40 insertions, 58 deletions

diff --git a/plugins/MacVST/Gatelope/Gatelope.xcodeproj/christopherjohnson.pbxuser b/plugins/MacVST/Gatelope/Gatelope.xcodeproj/christopherjohnson.pbxuser
index b9cbf51..bc12e1c 100755
--- a/plugins/MacVST/Gatelope/Gatelope.xcodeproj/christopherjohnson.pbxuser
+++ b/plugins/MacVST/Gatelope/Gatelope.xcodeproj/christopherjohnson.pbxuser
@@ -49,12 +49,12 @@
 					PBXFileDataSource_Warnings_ColumnID,
 				);
 			};
-			PBXPerProjectTemplateStateSaveDate = 565578826;
-			PBXWorkspaceStateSaveDate = 565578826;
+			PBXPerProjectTemplateStateSaveDate = 569735474;
+			PBXWorkspaceStateSaveDate = 569735474;
 		};
 		perUserProjectItems = {
 			8B416DA521B60DFE00DD5013 /* PBXTextBookmark */ = 8B416DA521B60DFE00DD5013 /* PBXTextBookmark */;
-			8BDA3BB721B3655A00CC56FA /* PBXTextBookmark */ = 8BDA3BB721B3655A00CC56FA /* PBXTextBookmark */;
+			8B793AC221F57942006E9731 /* PBXTextBookmark */ = 8B793AC221F57942006E9731 /* PBXTextBookmark */;
 		};
 		sourceControlManager = 8B02375E1D42B1C400E1E8C8 /* Source Control */;
 		userBuildSettings = {
@@ -78,9 +78,9 @@
 	};
 	24A2FFDB0F90D1DD003BB5A7 /* audioeffectx.cpp */ = {
 		uiCtxt = {
-			sepNavIntBoundsRect = "{{0, 0}, {838, 19838}}";
+			sepNavIntBoundsRect = "{{0, 0}, {747, 19864}}";
 			sepNavSelRange = "{10616, 0}";
-			sepNavVisRange = "{10613, 123}";
+			sepNavVisRange = "{0, 0}";
 			sepNavWindowFrame = "{{15, 42}, {895, 831}}";
 		};
 	};
@@ -116,15 +116,15 @@
 		vrLen = 123;
 		vrLoc = 10613;
 	};
-	8BDA3BB721B3655A00CC56FA /* PBXTextBookmark */ = {
+	8B793AC221F57942006E9731 /* PBXTextBookmark */ = {
 		isa = PBXTextBookmark;
 		fRef = 24A2FFDB0F90D1DD003BB5A7 /* audioeffectx.cpp */;
 		name = "audioeffectx.cpp: 307";
 		rLen = 0;
 		rLoc = 10616;
 		rType = 0;
-		vrLen = 123;
-		vrLoc = 10613;
+		vrLen = 0;
+		vrLoc = 0;
 	};
 	8D01CCC60486CAD60068D4B7 /* Gatelope */ = {
 		activeExec = 0;
diff --git a/plugins/MacVST/Gatelope/Gatelope.xcodeproj/christopherjohnson.perspectivev3 b/plugins/MacVST/Gatelope/Gatelope.xcodeproj/christopherjohnson.perspectivev3
index f01e0a3..f643443 100755
--- a/plugins/MacVST/Gatelope/Gatelope.xcodeproj/christopherjohnson.perspectivev3
+++ b/plugins/MacVST/Gatelope/Gatelope.xcodeproj/christopherjohnson.perspectivev3
@@ -323,7 +323,7 @@
 							<real>185</real>
 						</array>
 						<key>RubberWindowFrame</key>
-						<string>17 371 810 487 0 0 1440 878 </string>
+						<string>460 296 810 487 0 0 1440 878 </string>
 					</dict>
 					<key>Module</key>
 					<string>PBXSmartGroupTreeModule</string>
@@ -351,10 +351,10 @@
 										<key>_historyCapacity</key>
 										<integer>0</integer>
 										<key>bookmark</key>
-										<string>8B416DA521B60DFE00DD5013</string>
+										<string>8B793AC221F57942006E9731</string>
 										<key>history</key>
 										<array>
-											<string>8BDA3BB721B3655A00CC56FA</string>
+											<string>8B416DA521B60DFE00DD5013</string>
 										</array>
 									</dict>
 									<key>SplitCount</key>
@@ -368,18 +368,18 @@
 							<key>GeometryConfiguration</key>
 							<dict>
 								<key>Frame</key>
-								<string>{{0, 0}, {603, 51}}</string>
+								<string>{{0, 0}, {603, 32}}</string>
 								<key>RubberWindowFrame</key>
-								<string>17 371 810 487 0 0 1440 878 </string>
+								<string>460 296 810 487 0 0 1440 878 </string>
 							</dict>
 							<key>Module</key>
 							<string>PBXNavigatorGroup</string>
 							<key>Proportion</key>
-							<string>51pt</string>
+							<string>32pt</string>
 						</dict>
 						<dict>
 							<key>Proportion</key>
-							<string>390pt</string>
+							<string>409pt</string>
 							<key>Tabs</key>
 							<array>
 								<dict>
@@ -393,9 +393,9 @@
 									<key>GeometryConfiguration</key>
 									<dict>
 										<key>Frame</key>
-										<string>{{10, 27}, {603, 363}}</string>
+										<string>{{10, 27}, {603, 382}}</string>
 										<key>RubberWindowFrame</key>
-										<string>17 371 810 487 0 0 1440 878 </string>
+										<string>460 296 810 487 0 0 1440 878 </string>
 									</dict>
 									<key>Module</key>
 									<string>XCDetailModule</string>
@@ -477,11 +477,11 @@
 			</array>
 			<key>TableOfContents</key>
 			<array>
-				<string>8B416DA621B60DFE00DD5013</string>
+				<string>8B793AC321F57942006E9731</string>
 				<string>1CA23ED40692098700951B8B</string>
-				<string>8B416DA721B60DFE00DD5013</string>
+				<string>8B793AC421F57942006E9731</string>
 				<string>8B0237581D42B1C400E1E8C8</string>
-				<string>8B416DA821B60DFE00DD5013</string>
+				<string>8B793AC521F57942006E9731</string>
 				<string>1CA23EDF0692099D00951B8B</string>
 				<string>1CA23EE00692099D00951B8B</string>
 				<string>1CA23EE10692099D00951B8B</string>
@@ -634,7 +634,7 @@
 	<key>StatusbarIsVisible</key>
 	<true/>
 	<key>TimeStamp</key>
-	<real>565579262.52925205</real>
+	<real>569735490.74607503</real>
 	<key>ToolbarConfigUserDefaultsMinorVersion</key>
 	<string>2</string>
 	<key>ToolbarDisplayMode</key>
@@ -654,7 +654,7 @@
 		<string>/Users/christopherjohnson/Desktop/MacVST/Gatelope/Gatelope.xcodeproj</string>
 	</array>
 	<key>WindowString</key>
-	<string>17 371 810 487 0 0 1440 878 </string>
+	<string>460 296 810 487 0 0 1440 878 </string>
 	<key>WindowToolsV3</key>
 	<array>
 		<dict>
diff --git a/plugins/MacVST/Gatelope/source/GatelopeProc.cpp b/plugins/MacVST/Gatelope/source/GatelopeProc.cpp
index b32bddb..f429042 100755
--- a/plugins/MacVST/Gatelope/source/GatelopeProc.cpp
+++ b/plugins/MacVST/Gatelope/source/GatelopeProc.cpp
@@ -196,18 +196,14 @@ void Gatelope::processReplacing(float **inputs, float **outputs, VstInt32 sample
 		
 		flip = !flip;
 		
-		//noise shaping to 32-bit floating point
-		float fpTemp = inputSampleL;
-		fpNShapeL += (inputSampleL-fpTemp);
-		inputSampleL += fpNShapeL;
-		//if this confuses you look at the wordlength for fpTemp :)
-		fpTemp = inputSampleR;
-		fpNShapeR += (inputSampleR-fpTemp);
-		inputSampleR += fpNShapeR;
-		//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
+		//stereo 32 bit dither, made small and tidy.
+		int expon; frexpf((float)inputSampleL, &expon);
+		long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+		inputSampleL += (dither-fpNShapeL); fpNShapeL = dither;
+		frexpf((float)inputSampleR, &expon);
+		dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+		inputSampleR += (dither-fpNShapeR); fpNShapeR = dither;
+		//end 32 bit dither
 		
 		*out1 = inputSampleL;
 		*out2 = inputSampleR;
@@ -217,12 +213,6 @@ void Gatelope::processReplacing(float **inputs, float **outputs, VstInt32 sample
 		*out1++;
 		*out2++;
     }
-	fpNShapeL *= 0.999999;
-	fpNShapeR *= 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.	
 }
 
 void Gatelope::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) 
@@ -414,18 +404,16 @@ void Gatelope::processDoubleReplacing(double **inputs, double **outputs, VstInt3
 		
 		flip = !flip;
 		
-		//noise shaping to 64-bit floating point
-		double fpTemp = inputSampleL;
-		fpNShapeL += (inputSampleL-fpTemp);
-		inputSampleL += fpNShapeL;
-		//if this confuses you look at the wordlength for fpTemp :)
-		fpTemp = inputSampleR;
-		fpNShapeR += (inputSampleR-fpTemp);
-		inputSampleR += fpNShapeR;
-		//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 64 bit output
+		//stereo 64 bit dither, made small and tidy.
+		int expon; frexp((double)inputSampleL, &expon);
+		long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+		dither /= 536870912.0; //needs this to scale to 64 bit zone
+		inputSampleL += (dither-fpNShapeL); fpNShapeL = dither;
+		frexp((double)inputSampleR, &expon);
+		dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+		dither /= 536870912.0; //needs this to scale to 64 bit zone
+		inputSampleR += (dither-fpNShapeR); fpNShapeR = dither;
+		//end 64 bit dither
 		
 		*out1 = inputSampleL;
 		*out2 = inputSampleR;
@@ -435,10 +423,4 @@ void Gatelope::processDoubleReplacing(double **inputs, double **outputs, VstInt3
 		*out1++;
 		*out2++;
     }
-	fpNShapeL *= 0.999999;
-	fpNShapeR *= 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.	
 }