diff --git a/.gitignore b/.gitignore
index ade4a7e..5ef6f49 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ imgui.ini
 stmdspgui
 stmdspgui.exe
 *.o
+.*
diff --git a/source/file.cpp b/source/file.cpp
index d82f0ec..355ab7b 100644
--- a/source/file.cpp
+++ b/source/file.cpp
@@ -87,6 +87,7 @@ void fileRenderMenu()
 
                     // Treat like new file.
                     fileCurrentPath.clear();
+                    statusMessage = "Ready.";
                 }
             }
 
diff --git a/templates/1_convolve_simple.cpp b/templates/1_convolve_simple.cpp
index 0f1973d..8de05d3 100644
--- a/templates/1_convolve_simple.cpp
+++ b/templates/1_convolve_simple.cpp
@@ -7,10 +7,10 @@
  * transient response is not calculated.
  */
 
-adcsample_t *process_data(adcsample_t *samples, unsigned int size)
+Sample *process_data(Samples samples)
 {
     // Define our output buffer. SIZE is the largest size of the 'samples' buffer.
-    static adcsample_t buffer[SIZE];
+    static Sample buffer[samples.size()];
 
     // Define our filter
     constexpr unsigned int filter_size = 3;
@@ -19,7 +19,7 @@ adcsample_t *process_data(adcsample_t *samples, unsigned int size)
     };
 
     // Begin convolving:
-    for (int n = 0; n < size - (filter_size - 1); n++) {
+    for (int n = 0; n < samples.size() - (filter_size - 1); n++) {
         buffer[n] = 0;
         for (int k = 0; k < filter_size; k++)
             buffer[n] += samples[n + k] * filter[k];
diff --git a/templates/2_convolve_overlap_save.cpp b/templates/2_convolve_overlap_save.cpp
index 1387d7f..57c020a 100644
--- a/templates/2_convolve_overlap_save.cpp
+++ b/templates/2_convolve_overlap_save.cpp
@@ -11,9 +11,9 @@
  * computation.
  */
 
-adcsample_t *process_data(adcsample_t *samples, unsigned int size)
+Sample *process_data(Samples samples)
 {
-    static adcsample_t buffer[SIZE];
+    static Sample buffer[samples.size()];
 
     constexpr unsigned int filter_size = 3;
 	float filter[filter_size] = {
@@ -21,9 +21,9 @@ adcsample_t *process_data(adcsample_t *samples, unsigned int size)
     };
 
     // Keep a buffer of extra samples for overlap-save
-    static adcsample_t prev[filter_size];
+    static Sample prev[filter_size];
 
-    for (int n = 0; n < size; n++) {
+    for (int n = 0; n < samples.size(); n++) {
         buffer[n] = 0;
 
         for (int k = 0; k < filter_size; k++) {
@@ -40,7 +40,7 @@ adcsample_t *process_data(adcsample_t *samples, unsigned int size)
 
     // Save samples for the next convolution run
     for (int i = 0; i < filter_size; i++)
-        prev[i] = samples[size - filter_size + i];
+        prev[i] = samples[samples.size() - filter_size + i];
 
     return buffer;
 }
diff --git a/templates/3_fir.cpp b/templates/3_fir.cpp
index 7af66a8..3a68500 100644
--- a/templates/3_fir.cpp
+++ b/templates/3_fir.cpp
@@ -7,9 +7,9 @@
  * within the available execution time. Samples are also normalized so that they center around zero.
  */
 
-adcsample_t *process_data(adcsample_t *samples, unsigned int size)
+Sample *process_data(Samples samples)
 {
-    static adcsample_t buffer[SIZE];
+    static Sample buffer[samples.size()];
 
 	// Define the filter:
 	constexpr unsigned int filter_size = 3;
@@ -19,9 +19,9 @@ adcsample_t *process_data(adcsample_t *samples, unsigned int size)
 	};
 
     // Do an overlap-save convolution
-    static adcsample_t prev[filter_size];
+    static Sample prev[filter_size];
 
-    for (int n = 0; n < size; n++) {
+    for (int n = 0; n < samples.size(); n++) {
         // Using a float variable for accumulation allows for better code optimization
         float v = 0;
 
@@ -40,7 +40,7 @@ adcsample_t *process_data(adcsample_t *samples, unsigned int size)
 
     // Save samples for next convolution
     for (int i = 0; i < filter_size; i++)
-        prev[i] = samples[size - filter_size + i];
+        prev[i] = samples[samples.size() - filter_size + i];
 
     return buffer;
 }
diff --git a/templates/4_fir_pro.cpp b/templates/4_fir_pro.cpp
index 379b83b..b1a6832 100644
--- a/templates/4_fir_pro.cpp
+++ b/templates/4_fir_pro.cpp
@@ -10,7 +10,7 @@ typedef struct
 
 static void arm_fir_f32(const arm_fir_instance_f32 * S, float32_t * pSrc, float32_t * pDst, uint32_t blockSize);
 
-adcsample_t *process_data(adcsample_t *samples, unsigned int size)
+Sample *process_data(Samples samples)
 {
 	// 1. Define our array sizes (Be sure to set Run > Set buffer size... to below value!)
 	constexpr unsigned int buffer_size = 500;
@@ -34,18 +34,18 @@ adcsample_t *process_data(adcsample_t *samples, unsigned int size)
 	static float working[buffer_size + filter_size];
 
 	// 3. Scale 0-4095 interger sample values to +/- 1.0 floats
-	for (unsigned int i = 0; i < size; i++)
+	for (unsigned int i = 0; i < samples.size(); i++)
 		input[i] = (samples[i] - 2048) / 2048.f;
 
 	// 4. Compute the FIR
 	arm_fir_instance_f32 fir { filter_size, working, filter };
-	arm_fir_f32(&fir, input, output, size);
+	arm_fir_f32(&fir, input, output, samples.size());
 
 	// 5. Convert float results back to 0-4095 range for output
-	for (unsigned int i = 0; i < size; i++)
+	for (unsigned int i = 0; i < samples.size(); i++)
 		samples[i] = output[i] * 2048.f + 2048;
 
-    return samples;
+    return samples.data();
 }
 
 // Below taken from the CMSIS DSP Library (find it on GitHub)
diff --git a/templates/5_fir_differentiator.cpp b/templates/5_fir_differentiator.cpp
index a3a7d4f..72415c6 100644
--- a/templates/5_fir_differentiator.cpp
+++ b/templates/5_fir_differentiator.cpp
@@ -7,23 +7,23 @@
  * A scaling factor is applied so that the output's form is more clearly visible.
  */
 
-adcsample_t *process_data(adcsample_t *samples, unsigned int size)
+Sample *process_data(Samples samples)
 {
     constexpr int scaling_factor = 4;
-	static adcsample_t output[SIZE];
-    static adcsample_t prev = 2048;
+	static Sample output[samples.size()];
+    static Sample prev = 2048;
 
     // Compute the first output value using the saved sample.
     output[0] = 2048 + ((samples[0] - prev) * scaling_factor);
 
-	for (unsigned int i = 1; i < size; i++) {
+	for (unsigned int i = 1; i < samples.size(); i++) {
         // Take the rate of change and scale it.
         // 2048 is added as the output should be centered in the voltage range.
 		output[i] = 2048 + ((samples[i] - samples[i - 1]) * scaling_factor);
     }
 
 	// Save the last sample for the next iteration.
-    prev = samples[size - 1];
+    prev = samples[samples.size() - 1];
 
     return output;
 }
diff --git a/templates/6_iir_test.cpp b/templates/6_iir_test.cpp
index cdb4ab3..116a680 100644
--- a/templates/6_iir_test.cpp
+++ b/templates/6_iir_test.cpp
@@ -1,13 +1,13 @@
-adcsample_t *process_data(adcsample_t *samples, unsigned int size)
+Sample *process_data(Samples samples)
 {
 	constexpr float alpha = 0.7;
 
-	static adcsample_t prev = 2048;
+	static Sample prev = 2048;
 
 	samples[0] = (1 - alpha) * samples[0] + alpha * prev;
-	for (unsigned int i = 1; i < size; i++)
+	for (unsigned int i = 1; i < samples.size(); i++)
 		samples[i] = (1 - alpha) * samples[i] + alpha * samples[i - 1];
-	prev = samples[size - 1];
+	prev = samples[samples.size() - 1];
 
-	return samples;
+	return samples.data();
 }
diff --git a/templates/7_iir_echo.cpp b/templates/7_iir_echo.cpp
index 8e93b35..57e5605 100644
--- a/templates/7_iir_echo.cpp
+++ b/templates/7_iir_echo.cpp
@@ -1,22 +1,22 @@
-adcsample_t *process_data(adcsample_t *samples, unsigned int size)
+Sample *process_data(Samples samples)
 {
 	constexpr float alpha = 0.75;
 	constexpr unsigned int D = 100;
 
-	static adcsample_t output[SIZE];
-	static adcsample_t prev[D]; // prev[0] = output[0 - D]
+	static Sample output[samples.size()];
+	static Sample prev[D]; // prev[0] = output[0 - D]
 
 	// Do calculations with previous output
 	for (unsigned int i = 0; i < D; i++)
 		output[i] = samples[i] + alpha * (prev[i] - 2048);
 
 	// Do calculations with current samples
-	for (unsigned int i = D; i < size; i++)
+	for (unsigned int i = D; i < samples.size(); i++)
 		output[i] = samples[i] + alpha * (output[i - D] - 2048);
 
 	// Save outputs for next computation
 	for (unsigned int i = 0; i < D; i++)
-		prev[i] = output[size - (D - i)];
+		prev[i] = output[samples.size() - (D - i)];
 
 	return output;
 }