Here's the pitch pipe sound I want to emulate: http://www.harmonize.com/metropolis/images/Sounds/CNatural.mp3
I read through the synthesis techniques for PD here http://pd-tutorial.com/english/ch03.html
I analyzed the sound file in Audacity to try and get an understanding of what combination of sound waves and synthesis techniques could create the sound.
I used saw and sine waves with a high-pass filter. In result, I still get a primitive sound.
I'm new to the sound waves and filtering. Hopefully the pitch pipe example helps you to explain what waves and filters would get that sound.