[Lazarus] How to produce a tone at Tone frequency for duration MSecs (milliseconds)

[Henry Vermaak]

On 4 September 2010 12:39, Sven Barth <pascaldragon at googlemail.com> wrote:
> On 04.09.2010 08:13, waldo kitty wrote:
>>
>> On 9/3/2010 15:29, Sven Barth wrote:
>>>
>>> On 03.09.2010 17:50, waldo kitty wrote:
>>>>
>>>> @PEW: how does your game install? does it have to install as root? if
>>>> so, since it is root, why not set up a new group that has access to the
>>>> /dev device for the speaker and add the user(s) to it? that way everyone
>>>> can beep when needed...
>>>
>>> I'd prefer a game NOT to fiddle around with security settings it
>>> hasn't to care
>>> about. And /dev/console is definitely part of this.
>>
>> while i agree... i'm also as old school as PEW and i don't agree to a
>> point or several, actually... one of those being why is the beep action
>> so looked down on in the *nix environment? games started off with only
>> the MB speaker as the way of sounding actions and activities... so
>> what's the bitch problem? is everyone these days so freakin' spoilt by
>> traditional sound card stuff that they refuse to recognize traditional
>> MB speaker sounds? i mean geez, does the standard (k)ubuntu solitaire
>> really use the sound card when sounds are necessary? or the oriental
>> tile games? or the many other single player local console games?
>>
>> so please tell me why today's folk are so jaundiced to the traditional
>> methods of game writing... surely it isn't due to ignorance... maybe it
>> is due to too much perceived character of their own person?? i dunno...
>> but it is rather ugly, distant and hateful...
>
> Don't get me wrong here. I've nothing against beeping applications. I'm
> using beep myself to signal when my headless computer has finished booting.
> And I love old DOS games that beep around as if there's no tomorrow :D
>
> The problem is that the beep "control interface" on *nix platforms seems to
> be integrated into the terminal system. And I don't want any application to
> fiddle around with the settings of the devices that belong to that system
> (especially without my knowledge).
> Better would be if there'd be a beep device (e.g. /dev/beep) which could be
> owned by a group "beep" or maybe the existing "audio" group and thus all
> would be happy...

I can play music over my pc speaker through pulseaudio, so surely it's
possible directly with alsa?  I may be way off, here, since I usually
block the pc speaker module from loading.