[LAD] Replacement for KbdCtl.bell
Joel Roth
joelz at pobox.com
Fri Feb 4 11:02:47 CET 2022
On Fri, Feb 04, 2022 at 10:49:59AM +0100, Peter wrote:
> Dear All,
>
> inspired by the "A History of Audio on Linux somewhere?" I took a look at my
> very old Linux Audio projects.
>
> I have one which amazingly still compiles, namely FeigenSound from the Linux Magazin 03/2001,
> however I can't hear the output, even when the pcspkr module is loaded.
> I assume that todays Laptops just don't have speaker anymore.
>
> There I was using the KbdCtl.bell_* to generate tones with a given frequency and duration:
>
> // switch to new state
> KbdCtl.bell_percent = 100;
> KbdCtl.bell_pitch = Frequency;
> KbdCtl.bell_duration = Duration;
> XChangeKeyboardControl(pDisplay, KBBellPercent | KBBellPitch | KBBellDuration, &KbdCtl);
>
>
> Is there still such a simple method available to generate a tone with a given duration and frequency.
> Of course I could generate a corresponding array and send it to jackd, I'm just looking for something simple.
1200Hz for 10s
ecasound -i:tone,sine,1200,10 -o:jack,system
> Best regards,
> Peter
> _______________________________________________
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> Linux-audio-dev at lists.linuxaudio.org
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--
Joel Roth
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