Tag: sound

Human auditory perception and “missing fundamentals”

Did you know there’s interesting technology built around using higher-order harmonics to “fake” people into thinking they are hearing low bass sounds?

This is done because some speakers can’t produce the low frequencies needed for the bass sounds.  So taking advantage of human auditory perception, you can generate a certain pattern of higher frequency harmonics.  Our brains believe we are hearing the low frequency because we “fill-in” the missing fundamental frequency.  Pretty awesome!

Read more about it on Wikipedia!


Get Sound to work on Fedora 12 Dell Mini 9

Sound doesn’t work correctly by default on Fedora 12 install.

Basically, make sure that

  1. blacklist.conf has the blacklist snd-pcsp line enabled (this is needed to disable the default “auto-detected” sound driver.
  2. From various sources online, add the correct reference to the “sound driver”

Edit /etc/modrobe.d/* to add options snd-hda-intel index=0 model=dell, then it did. Not sure why auto mode doesn’t work.

I added it to my LOCAL.CONF file.
Also, make sure PULSEAUDIO is installed to get access to the SOUND VOLUME CONTROL.

Some references where I found this info.


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