Your challenge is to play these notes (speakers or to a sound file) in this order:
C A F G
Specifically, you must play these frequencies one after the other:
261.63 Hz 220.00 Hz 174.61 Hz 196.00 Hz
with an allowed error of +/- 5 Hz.
If you output to a file, please use a
.mp3, or raw bytes that can be fed to aplay. The notes must last at least 100ms, and less than 5s. They must be played for the same duration.
No, this is not a converter from notes to a sound file! You just need to play some frequencies!