I’m in the process of designing a better set of alert and warning sounds using FM synthesis and reverb via the web based audio design tool from PJRC. I’m using a small Teensy 3.2 setup on a solderless breadboard, with two inputs (pushbuttons) on input 3 & 5 – each playing a note (for debugging). The output is A12 which is the 12 bit audio DAC.
The Teensy 3.2 – breadboard date 11.26.17 – also has a 10KHz LPF (1.5K Ohm & 10 nF) and a 100nF coupling cap – for DC blocking. The code to run the Earcons is:
The block diagram for the current synth variation is:
My goals are to:
- Import timer code (for pomadoro timers)
- Define the 4 Earcons