small changes; sig gen square(), triangle(), pulse()

1 files changed, 29 insertions, 0 deletions

diff --git a/examples/1_convolve_simple.cpp b/examples/1_convolve_simple.cpp
new file mode 100644
index 0000000..8de05d3
--- /dev/null
+++ b/examples/1_convolve_simple.cpp
@@ -0,0 +1,29 @@
+/**
+ * 1_convolve_simple.cpp
+ * Written by Clyne Sullivan.
+ *
+ * Computes a convolution in the simplest way possible. While the code is brief, it lacks many
+ * possible optimizations. The convolution's result will not fill the output buffer either, as the
+ * transient response is not calculated.
+ */
+
+Sample *process_data(Samples samples)
+{
+    // Define our output buffer. SIZE is the largest size of the 'samples' buffer.
+    static Sample buffer[samples.size()];
+
+    // Define our filter
+    constexpr unsigned int filter_size = 3;
+	float filter[filter_size] = {
+        0.3333, 0.3333, 0.3333
+    };
+
+    // Begin convolving:
+    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];
+    }
+
+    return buffer;
+}