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Originally Posted by Robscix  Depends on the mesurment really. There are many frequencies that are way outside of the audio spectrum which is about 20Hz to 20Khz. This is the "band-width" of human hearing more or less. It changes with age and of course some bass frequencies can still be felt but not heard usually way under 20Hz...
Many audio tests will only concentrate on this area only.
Soundcards usually have filtering sections to remove unwanted signals and only certain parts of the circuit are suceptible to any interference that can be of a issue to playback. Some blow the entire subject of EMI/RFI right out of proportion. If it is a concern for you buy a sheilded card or shiled the one you have.
You are correct in that some get way to anal about the entire subject and worse many use their current audio gear or knowledge to make up for other shortcomings in their personality. People that are rude and jump on others who are just learning. You can know more then another and offer your advice and opinion without turning it into a *issing contest. You will find alot of that going on in the larger "dedicated" audio forums.
I have a background in Electronic engineering and I add a little bit of info to my reviews about electronics as I figure this helps people learn about what makes these cards function so they can make informed decisions based on reading specs and other information. Although I try not to get too complicated just enough to convey the point. Hope this Helps. |
Those forums are indeed full of posts that are wastes of bandwidth (they seemed almost inevitable in discussions about cables). I quickly learned to just avoid threads that had decayed to that point. That aside, what I've managed to glean from discussions on the subject is that when you try to "block" HF noise that is already in the circuitry, then that noise may modulate itself down to an audio frequency if it is not damped somehow.
December 22, 2008, 03:04 PM
Linear Mode
