Add some images and audio files for testing purposes

Signed-off-by: Severin Kaderli <severin@kaderli.dev>

notes/time_report.md

@@ -17,3 +17,11 @@
   * No change measurable in magnetmeter even if I can see the coil vibrate
   * I assume the change in the magnetic field is too small to be measured
 * Finish project plan
+
+# 2022-09-26
+* Test Magnetic Field of Laptop CPU
+  * I can clearly see the spikes
+* Another try on the Raspberry Pi
+  * Still nothing accurate
+* Research other solutions
+  * https://www.cs.sjtu.edu.cn/~yichao/pmwiki/assets/publications/mobicom17_pan.pdf

src/stress-cpu.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env sh
+
+while true
+do
+    stress --cpu 8 --timeout 2
+    sleep 2
+done