From: sgunderson@bigfoot.com <>
Date: Thu, 28 Dec 2006 17:58:43 +0000 (+0100)
Subject: Make a square generator.
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=2301f55b85dc56793b1d3fd27b00c6828ec3dc5e;p=audiosync

Make a square generator.
---

diff --git a/gen-square.c b/gen-square.c
new file mode 100644
index 0000000..72c32cd
--- /dev/null
+++ b/gen-square.c
@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <math.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+	unsigned num_samples = atoi(argv[1]);
+	double freq = atof(argv[2]);
+	
+	for (unsigned i = 0; i < num_samples; ++i) {
+		double y = cos(freq * 2.0 * M_PI * (double)(i) / 48000);
+		short ys = (y > 0) ? 16384.0 : -16384.0;
+
+		fwrite(&ys, sizeof(short), 1, stdout);
+	}
+}