As a child I've played one DOS game called Electro Body.The game did something amazing - it played back PCM samples through the PC speaker. Not the crappy square beeps - it played real sound effects!It was super quiet in comparison to the usual beeps that the PC speaker makes, but it was a completely new quality of sound. I never heard anything like that before or after that game.I wonder - if there is a way in GNU/Linux to play arbitrary PCM sound streams through the PC speaker apart from just beeps that the beep command makes? Can I play WAV or Ogg files through that?Apart from the fact that it'd be cool to make some sophisticated noises, one could probably use this as an analogue voltage control output - for whatever crazy DIY project.
Playing arbitrary PCM sound throught the PC speaker?
audio
I don't have a system to test it on, but it appears that ALSA can provide mapping of output to the PC speaker.  FYI, there are many pages out there that say this is a bad idea because the driver is intended as a toy and not for general use (it will burn a lot of CPU cycles), but that said, this should work:# Load the PC speaker driversudo modprobe snd-pcsp# Reload ALSA to find the new driversudo alsa force-reload# You should now see pcsp (pcspeaker) as an ALSA output optionsudo aplay -lSelect the sound card as your output and have fun!Sources:http://wiki.archlinux.org/index.php/PC_speaker#ALSAhttp://wiki.archlinux.org/index.php/Advanced_Linux_Sound_Architecture#Set_the_default_sound_cardhttp://www.linuxquestions.org/questions/slackware-14/how-do-you-use-snd-pcsp-in-slackware-14-1-a-4175534306/