clicky driver
Gary Kline
kline at thought.org
Sat Dec 26 23:07:37 UTC 2009
On Sun, Dec 27, 2009 at 01:19:49AM +1100, Ian Smith wrote:
> On Fri, 25 Dec 2009 20:23:22 -0800 Gary Kline <kline at thought.org> wrote:
> > On Sat, Dec 26, 2009 at 01:10:45AM +0000, Chris Whitehouse wrote:
> > > Gary Kline wrote:
> > > >>On Fri, 25 Dec 2009 13:37:13 -0800, Gary Kline <kline at thought.org> wrote:
> > > >>> at first I'm lookings for a "cots" (commericial, off-the-shelf)
> > > >>> solution. The XO has stereo speakers and so do the notebooks.
> > > >>> I am thinking of the 'PC speaker'; something that would sound for
> > > >>> around a 25th/second, very low and with at least some loudness
> > > >>> control.
> > >
> > > Hi Gary,
> > >
> > > someone posted recently about the play-string language for /dev/speaker,
> > > see speaker(4). Could you do something with that?
> > >
> > > btw thanks to whoever posted the play-string code for frere jaques -
> > > cracked me up :)
> > >
> > > Chris
>
> Yeah :) I play little tunelets on certain battery power events, when
> some IP gets blacklisted by some logtailing script, things like that.
>
> > Wow; the stuff I've never heard about:-) --I just tried spkrtest
> > and have no /dev/speaker.
>
> # kldload speaker
Thanks! I just listened to the opening few notes of Star Trek [!]
But very faint and I don't know if the dinky BEL is a chip or a
real speaker.
Anybody know how I can redirect the beep to my speakers? I miss
the confirmation that vi/vim puts out.
>
> device speaker isn't in kernel GENERIC. If it doesn't work immediately,
> try adding speaker_load="YES" to /boot/loader.conf .. this assumes that
> your box _has_ a working speaker, eg beeps once while booting?
Probably help to be a dog! --That reminds me of what my parents
generation were saying about mine [with its loud music]. That we'd
all be nerve-deaf by age 55.-- Teh computer does beep as an error
sound. How adjustable it is other than just beeping, dunno.
>
> Some laptops use the sound'card' for speaker, and provide a mixer level.
Should be a way to send the beep to my desktop speakers, then,
right? I've got volume and power, treble/bass.
>
> > The short answer [Guess] is no, I dont think so. If getting the
> > keys to have an auditory feedback with beeps or shorter clicks were
> > that easy, it would have been done after 15 years. Even Linux
> > lacks this--and I'd bet Minux too.
> >
> > What I've got to do is pick up where I kwit ten years ago with the
> > kernel driver code and drop the the code to make the speaker-audio
> > create tiny, brief clicks, preferably low, thunky sounds like ye
> > ancient IBM Selectrics.
>
> You can do quite a lot with various tempos, intervals and frequencies;
> see speaker(4) and play around. Making a short click or thunk! should
> be easy enough, but spkrtest and echoing playstrings >/dev/speaker are
> userland processes; I've no idea how much 'fun' it would be to invoke
> /dev/speaker ioctls from the kbd drivers. But if you're really keen:
Def !fun, but not rocket science either. I'll poke around at this
stuff.
>
> % find /sys/ -name "speaker*" -o -name "spkr*"
I've found spkr.c; still there after all these months, :)
thanks again,
gary
PS: this might be interesting: I just tried to get
% xset c 50
and
% xset on
on my Ubuntu Thinkpad. Zip. At least here I've got the code!
>
> cheers, Ian
--
Gary Kline kline at thought.org http://www.thought.org Public Service Unix
http://jottings.thought.org http://transfinite.thought.org
The 7.79a release of Jottings: http://jottings.thought.org/index.php
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