ecasound does this very nicely. For example, here's A 440 as given in the ecasound documentation: ecasound -i null -o /dev/dsp -el:sine_fcac,440,1 By the way, you can also get a specific tone from the backspace key by setting the bell frequency with setterm. I prefer my bell to be a low burp sort of sound, so have the following in my .bashrc: setterm -bfreq 55 Thomas Stivers writes: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > - ----- Forwarded message from Sam Watkins <swatkins@xxxxxxxxxxx> ----- > > From: Sam Watkins <swatkins@xxxxxxxxxxx> > Subject: Re: Playing tone through speakers > > I thought you might find this interesting. > > On Fri, Jan 14, 2005 at 01:19:20PM -0600, Michael Satterwhite wrote: > > So the correct question would be: Does anyone know of a utility that > > would play a continuous tone of a specified frequency through the > > speakers attached to my SoundBlaster Live? > > Yes, I wrote one, it's called "bell". It's OSS specific at the moment, > but I suppose it would work with ALSA's OSS emulation. _______________________________________________ Blinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/blinux-list