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Post by starandchlorisse on Feb 2, 2017 20:14:05 GMT
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Post by Ethan Winer on Feb 4, 2017 15:20:51 GMT
It's easy to process stereo channels separately. You can do that in DAW software, or build / buy two mono parametric equalizers. Are you up for a DIY project? This article shows the schematic for a terrific parametric EQ: Spectrum Analyzer and Equalizer Designs
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Post by starandchlorisse on Feb 7, 2017 5:03:48 GMT
Hi Ethan, This is quite heavy for me, I m afraid,
Do you have any suggestions for decent mono parametric equalizers?
many thanks again.
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Post by rock on Feb 7, 2017 13:45:22 GMT
You can also use a stereo parametric EQ if it has separate controls for each channel. I have a Behringer tube ultra q t1951 where each channel can be set independently in 4 bands (8 bands total). If you're in the Chicagoland area I can sell it to you as I never use it. You can probably more easily find many graphic EQ that have separate L/R channel controls. Parametrics offer finer control but graphics are easier to use because the slide controls provide a "graphic" indication of the EQ setting.
Cheers, Rock
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Post by starandchlorisse on Feb 7, 2017 15:22:22 GMT
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Post by arnyk on Feb 8, 2017 16:23:00 GMT
You can also use a stereo parametric EQ if it has separate controls for each channel. I have a Behringer tube ultra q t1951 where each channel can be set independently in 4 bands (8 bands total). If you're in the Chicagoland area I can sell it to you as I never use it. You can probably more easily find many graphic EQ that have separate L/R channel controls. Parametrics offer finer control but graphics are easier to use because the slide controls provide a "graphic" indication of the EQ setting. Cheers, Rock The cheapest one is among the best. To have it, you have to be routing audio through an audio device that is controlled by Windows 7 or later. It is hidden in the basic Windows product, but this freeware exposes it and makes it controllable: Peace, a freeware user interface for the built-in equalizer APO feature of Windows
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Post by rock on Feb 8, 2017 19:59:54 GMT
Absolutely, especially if the source music is on your PC. If the music source is some other device, you'll need to route it into your computer. In the latter case, it might be more convenient to use dedicated hardware, especially if your computer is not used in the same room. It all depends.
Cheers, Rock
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Post by starandchlorisse on Feb 8, 2017 20:14:09 GMT
Anything for Mac?
Thanks
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Post by Joe Hamilton on Mar 4, 2017 21:42:13 GMT
I would watch that the EQ's you employ be linear phase EQ's. Otherwise, to my understanding ("TMU"?), you're going to be causing different degrees of phase shifting in each individual channel - which could become a real aural-mess. OTOH, I could be full of shit (but my intentions are well-meaning). I don't know if you're into the DAW side of things, but here's a well-respected freebie that works on Mac: Voxengo Linear Phase EQ
It's got various routing options including "Dual-Mono", if that's what you're looking for.
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Post by Ethan Winer on Mar 6, 2017 16:13:59 GMT
My opinion is that linear phase equalizers solve a problem that nobody has, and they add new problems of their own. Phase shift in typical amounts is not audible, and it's a normal, natural part of how filters and equalizers work. More here: AES Audio Myths - Phase Shift
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Post by Joe Hamilton on Mar 6, 2017 22:41:16 GMT
Welp - there ya' go. Fulla' carp again.
Maybe I'll change my name to "Myth America."
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Post by starandchlorisse on Mar 9, 2017 3:54:23 GMT
My opinion is that linear phase equalizers solve a problem that nobody has, and they add new problems of their own. Phase shift in typical amounts is not audible, and it's a normal, natural part of how filters and equalizers work. More here: AES Audio Myths - Phase Shift I personally meant only with the use of hearing aids which each one has its own mic so you can eq for your hearing loss each ear separately. So it should be the only solution for this kind of application. Or not?
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Post by arnyk on Mar 9, 2017 13:31:18 GMT
My opinion is that linear phase equalizers solve a problem that nobody has, and they add new problems of their own. Phase shift in typical amounts is not audible, and it's a normal, natural part of how filters and equalizers work. More here: AES Audio Myths - Phase ShiftOne caveat is that the phase shift needs to be identical in both channels for its perception to be minimized. Phase shift that is different in each channel, particularly at mid and low frequencies, it more readily reliably perceptible. Another caveat is that equalizing the channels differently to compensate for a hearing issue in just one ear is weakened by the fact that in normal listening, live or with speakers, there is not really that much channel separation between the ears due to HRTF's. Binaural listening which is essentially what you get with a hearing aid that has two independent channels, is a world unto its own. Generally speaking, linear phase equalizers have a lot more ringing than a comparible minimum phase equalizer. Many of the artifacts we equalize are themselves minimum phase effects, and if you flatten out a minimum phase artifact with a compatible minimum phase equalizer, both the phase and the amplitude are corrected. IME there is a lot of irrational audiophile angst about equalization, which is belied by all of the non-flat minimum phase elements that exist in a normal reproduction chain. The fact is that people who sell audio are rightfully fearful that if equalizers are too widely adopted they will often be used to alter sound quality in ways that will reduce the habitual churning of their systems by audiophiles. However, it is also true that system churn due to the Placebo Effect has plenty of gold to gather in it.
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Post by arnyk on Mar 9, 2017 13:34:23 GMT
Absolutely, especially if the source music is on your PC. If the music source is some other device, you'll need to route it into your computer. In the latter case, it might be more convenient to use dedicated hardware, especially if your computer is not used in the same room. It all depends. Cheers, Rock In the current market. building a dedicated computer to be an equalizer can be cheaper than many of the better dedicated equalizer. Smaller, too.
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Post by Ethan Winer on Mar 9, 2017 16:02:43 GMT
Yes Arny, I took it as a given that phase shift for stereo should be the same in both channels. That's how those "width enhancer" products work, by applying different amounts of shift to each channel. (I know you know this, I mention it for the benefit of others.)
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