Audio Filters (sub-minature)

Chris · 2016-06-07T10:45:11+00:00

Hi all, Like many people I listen to music on an mp3 player about the size of a matchbox but one-third as thick. This player features a basic graphic equalizer. It only covers about 6 bands but works surprisingly well in tayloring the sound to my ageing earholes. The question is, how is audio filtering implemented in something so tiny? To me, an audio filter (the ones I grew up with anyway) is typically the size of a cigarette pack at least and weigh several ounces and yet when I take the back of my player there's nothing in there bigger than a grain of salt (aside from the controller chip etc, of course). This seems to defy the laws of physics. How's it done? Just curious...

Jun 07, 2016 42 Replies

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John Doe 10 years ago

bill.sloman ieee.org wrote in news:57ae1aab-2604-4c0c-8b69-4c2e6712b334 googlegroups.com:

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bill.sloman 10 years ago

It included information that you wouldn't have a clue about, and being the kind of top-posting slob that you are, wouldn't care about either.

Crawl back into your lair and drop your body temperature back to barely above ambient - if you had the wit to be ambitious, you could aspire to evolve into a slug.

Bill Sloman, Sydney

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