is it quartus II can simulate sound wave ?

[Altera_Forum]

halo, I got problem here... 

if using Quartus II , can i design the circuit to function something like music keyboard? i don't know at all...just gt this idea...what components are needed ?

[Altera_Forum]

http://www.fpga4fun.com/musicbox.html

[Altera_Forum]

The "music box" is the absolute minimum of sound generation hardware, just a digital output connected to a speaker, sending a square wave of variable frequency. You can either extend the design in software to a sigma-delta modulator or add a DAC or a sound chip. Many FPGA development kits have it. 

 Then you are free to e.g. implement polyphonic instruments.

[Altera_Forum]

--- Quote Start ---  The "music box" is the absolute minimum of sound generation hardware, just a digital output connected to a speaker, sending a square wave of variable frequency. You can either extend the design in software to a sigma-delta modulator or add a DAC or a sound chip. Many FPGA development kits have it.  Then you are free to e.g. implement polyphonic instruments.  --- Quote End ---        thx :D coz i'm jz first time to do this...May I knw how to program using VHDL? i follow the music box 's note...but it show this --> Error: Node instance "divby12" instantiates undefined entity "divide_by12" what's meant by ? wat's wrong here? i'm using quartus II...