BTc - Binary Time Constant 1.0 Audio Player.

Is this working fine ? I quickly made this project in 15 minutes.

https://www.romanblack.com/picsound.htm

http://www.radanpro.com/Radan2400/mikrokontroleri/How to make sound with a PIC chip.htm

 

The BTc Sound Player in post #1 uses BTc 1.0

Here I am posting Proteus Simulation of BTc 1.7. The sound is more clear.

The two circuits uses 8 MHz Crystal for PIC. If anybody wants to test the working with/without Amplifier then I can change the project to use Internal 8 MHz Oscillator and provide new firmwares.