[fpc-pascal] simple sound implementation

[Daniël Mantione]

Op Sun, 2 Sep 2007, schreef Jonas Maebe:

> =

> On 02 Sep 2007, at 07:58, Marc Santhoff wrote:
> =

> > FreeBSD has a simple speaker-device and is able to use it for simple
> > freqency and duration sounds via ioctl as well as playing musical notes
> > a simple acsii-notation. Maybe Linux, MacOS and others have similar
> > possibilities?
> =

> Mac OS X doesn't. Linux doesn't either, afaik (we teach one lab sessions =
at
> the university where the goal is to write/complete a similar device drive=
r for
> Linux).

You can set the bell frequency using write(#27'10;freq') and the duration =

using write(#27'10;duration'), where freq is in Hz and duration in =

milliseconds. Then ctrl+g to ring the bell. It is possible to play music =

this way.

Of course, the PC-Speaker is not really high fidelty sound.

Dani=EBl