Want to build resistor..
This resistor is very simple. It will have
stereo RCA in and out, and 1/8" mini in and out. All it will do is attenuate 2.5khz by 3 dB, with a Q wide enough to modestly affect frequencies from 1kHz up to 4kHz. Essentially to mildly scoop out those audio frequencies humans most readily hear. One could plug a line source or phone into it, and RCA out, IE, to a stereo amp. One could use the built- in tone controls('Bass', 'Treble'), to tailor the ends of the bandwidth to taste. Result? A smoother, less intrusive sound at background or concert- hall levels. What materials do I need? |
Want to build resistor..
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Want to build resistor..
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Want to build resistor..
On Monday, May 30, 2016 at 8:30:43 AM UTC-7, M Philbrook wrote:
a Graphic EQ. Jamie ....which you can find on eBay, many under US$20 (and even cheaper at a ham swap). |
Want to build resistor..
On Sun, 29 May 2016 11:43:05 -0700 (PDT), wrote:
Result? A smoother, less intrusive sound at background or concert- hall levels. Smoother than what? Twin-T, RC filter. |
Want to build resistor..
Black Iccy wrote: "Smoother than what?"
https://upload.wikimedia.org/wikiped...indos1.svg.png Read up on it. |
Want to build resistor..
wrote in message ... This resistor is very simple. It will have stereo RCA in and out, and 1/8" mini in and out. All it will do is attenuate 2.5khz by 3 dB, with a Q wide enough to modestly affect frequencies from 1kHz up to 4kHz. Essentially to mildly scoop out those audio frequencies humans most readily hear. One could plug a line source or phone into it, and RCA out, IE, to a stereo amp. One could use the built- in tone controls('Bass', 'Treble'), to tailor the ends of the bandwidth to taste. Result? A smoother, less intrusive sound at background or concert- hall levels. What materials do I need? You want a parametric EQ you can build yourself. Good luck with that. Gareth. |
Want to build resistor..
On Tuesday, May 31, 2016 at 3:00:18 AM UTC-4, Black Iccy wrote:
On Mon, 30 May 2016 16:23:22 -0700 (PDT) Black Iccy wrote: "Smoother than what?" https://upload.wikimedia.org/wikiped...indos1.svg.png Read up on it. No use pointing me at a set of Fletcher-Munson curves. I met those more than 60 years ago so if you think they're a point of enlightenment for me. Wrong. Particularly wrong because those curves are statistical averages for particular known levels. If you're trying to produce a response contour, those curves are not *it*. Turn up the volume a bit and your ears will respond differently. If you're trying to attenuate the mid-range audible levels for yourself, then you're intensifying the effect. Possibly wrong. If you think that a source has not had sufficient attention by the recording engineer at the time and that he/she did not endeavour to ensure a good result (one which you don't like) so you alter the response that's for you to decide. The easiest way is to build *nothing* and just raise the trevble and bass controls a fraction - same result. ________________ The point is, doing so sounds good to me. There are two audible "muddy zones" in the audio spectrum, to either side of 1kHZ: between 150-250Hz, and between 2-4kHz. A low-Q modest scoop(2-3dB) in those areas cleans things right up, whether I'm listening through full-size speakers, headphones, even if I'm listening through those dreaded Apple Buds that ship with every iPod. All I need is a filter for at least the higher "mud"(2-4khz) that can fit inline between my iPod and the receiver or amp it's connected to, or inline between the CD player and same amp. I have a 15band graphic EQ in my listening system, but need something a *little* less clunky for mobile purposes. A filter, if one can be built that's a little bigger than a Zippo lighter, would do the trick. By modestly reducing those areas, I don't need to "raise the treble and bass". Plus I've already bought some gain by said reduction. And even though I looked at the graph, the area of upper mid-range I need to reduce that sounds good to me is slightly lower, between 1-3kHz. As you said, the published curves represent averages, so they may not work for everyone. |
Want to build resistor..
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