P
Paul
Gur said:
Some sound cards or built-in sound chips, come with a software graphic
equalizer. You could crank down the top slider, to reduce the high
frequency content that way.
http://www.xbitlabs.com/images/multimedia/creative-audigy2-zs/i3.gif
Are you sure the high frequency is coming from the application ? It
could be noise picked up from an un-muted input on the sound chip.
It will give much better results, if you can clean up any noise
coming from the inputs, then to try to filter out the noise.
You can edit sound files with this. It is an open source sound
editor. There is an "effects" menu. You can prepare a test file,
with a known spectrum, then try playback and see if noise is
present. If there is noise, it means it isn't coming from the
sound file itself. The one I just downloaded now (1.3.3 beta)
has a low pass filter if you need it.
http://audacity.sourceforge.net/
Note - when using Audacity, along the top there are "play", "pause",
and "stop" buttons for playback control. Like on a tape recorder. Note
that, you cannot apply an effect, or do much else, if the playback
is in "pause" mode. You must press "stop", before you can resume work
on your creation.
Also, another thing about built-in audio. Some audio drivers add
reverberation to the sound being played. And they apply it, even if
you open the control panel for the sound chip, and "disable special
effects". The effect of inappropriate levels of reverb, is to make
music sound muddy. The only cure for this, is to buy a sound card
which doesn't do stupid stuff like that.
HTH,
Paul