Noise Maker and Synth Functional

mjholder · Oct 18, 2019 · 038d4dc · 038d4dc
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diff --git a/UberSynth.sln b/UberSynth.sln
@@ -0,0 +1,31 @@
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diff --git a/UberSynth/README.md b/UberSynth/README.md
@@ -0,0 +1,3 @@
+# synth
+
+This code is used in the Code-It-Yourself sound synthesizer videos on the onelonecoder.com blog
diff --git a/UberSynth/UberSynth.cpp b/UberSynth/UberSynth.cpp
@@ -0,0 +1,57 @@
+#include <iostream>
+#include "olcNoiseMaker.h"
+using namespace std;
+
+atomic<double> dFrequencyOutput = 0.0; // Hz
+
+double MakeNoise(double dTime) {
+	double dOutput = 0.2 * sin(dFrequencyOutput * 2 * PI * dTime);
+
+	if(dOutput > 0.0) {
+		dOutput = 0.2;
+	} else {
+		dOutput = 0.0;
+	}
+
+	return dOutput;
+}
+
+int main() {
+	wcout << "UberSynth" << endl;
+
+	// Get all sound hardware
+	vector<wstring> devices = olcNoiseMaker<short>::Enumerate();
+
+	// Display findings
+	for(auto d : devices) wcout << "Found Output Device:" << d << endl;
+
+	// Create sound machine. 
+	// 44100 is 2x human hearing Hz. Frequency
+	// short is bitrate, 16 bits. Amplitude
+	// 1 is number of channels. Stereo or Mono
+	olcNoiseMaker<short> sound(devices[0], 44100, 1, 8, 512);
+
+	// Link noise function to noise sound machine
+	sound.SetUserFunction(MakeNoise);
+
+	double dBaseFrequency = 110.0; // A2
+	double d12thRoot = pow(2.0, 1.0 / 12.0);
+
+	while(true) {
+		// Add a keyboard
+
+		bool bKeyPressed = false;
+		for(int i = 0; i < 15; i++) {
+			if(GetAsyncKeyState((unsigned char)("ZSXCFVGBNJMK\xbcL\scbe"[i])) & 0x8000) {
+				dFrequencyOutput = dBaseFrequency * pow(d12thRoot, i);
+				bKeyPressed = true;
+			}
+		}
+
+		if(!bKeyPressed) {
+			dFrequencyOutput = 0.0;
+		}
+	}
+
+	return 0;
+}
diff --git a/UberSynth/UberSynth.vcxproj b/UberSynth/UberSynth.vcxproj
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