I'm struggling to figure out this whole digital filtering business...linear, minimum, apodizing, soft knee, etc...I've read some of the technical explanations and discussions, but quite honestly 98% of it goes right over my head. This is more intellectual curiousity than anything else as I have rarely been able to actually hear differences between the various filters, but, hey, maybe if I knew what I was listening for, it might help.
The main thing I don't seem to find anywhere is any explanation of how any of these things translate into the human (sorry all you dogs reading this) sub-20khz audible world. For instance, how would pre and/or post-ringing (whatever the heck those are) manifest themselves in THE MUSIC----what I can (or can't) hear? What would the application of x, y, or z filter do to prevent/allow some audible change in that music?
I'm wondering if the absence of any "real/audible world" explanations of this stuff is due to the fact that, essentially, there isn't one---that every combination of gears and ears will manifest these things in a different way? Or is it just marketing stuff by the chip manufacturers to make us think we're getting some cool stuff, when it really makes very little, if any, differences in anything other than listening to equipment that 99.9% of us can't afford.
If anyone would care to offer up a "lay" explanation of, say, what I should or shouldn't expect to hear from the five filters in my new Rega dac or, alternatively, just point me to a non (or "light") technical explanation of what filtering does and what things, in terms I can understand, it's meant to solve, I would be most interested.
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2011-04-05, 10:08 #1
- Join Date
- Nov 2009
- Seattle, WA USA
Main: Vortexbox > Teddy Pardo PS >Touch (wired) > USB> MF VLink II >Toslink > Rega DAC > LFD LE IV Signature amp > VA Mozart Grands > REL Acoustics R305.
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2011-04-05, 10:49 #2
- Join Date
- Feb 2006
You ask to much to explain. The pro peole will grub out all kinds of audiophile vocabulary to describe all types of filters. Most likely the same vocabulary will be valid for parts of other filters.
From a technical view there of cause can be audible differences because some filters simply affect frequencys you can barely hear and so may change your perception in a way. If it is better!? You have to decide.
Read some and you will find out that some of these filters change the phase, some lower highs energy from 18KHz on and even lower, and some filters give solution to a problem on an impulse graph that happens above 20kHz you won┤t hear at all unless you hear the curing filter that changes frequencys you can hear
The same problem may be a non-issue for other big brands in the business. Most likely because they don┤t have the patent to make it an issue
It goes endless...
Last edited by Wombat; 2011-04-05 at 18:18.Transporter (modded) -> RG142 -> Avantgarde Acoustic based 500VA monoblocks -> Sommer SPK240 -> self-made speakers
2011-04-06, 17:49 #3
- Join Date
- Jul 2010
some visual SRC data
I like this site. I kind of shows how a brick wall looks, vs. a less linear approach. The ring characteristics associated with filters are also fascinating.
http://src.infinitewave.ca/System: modified Winsome Labs Mouse, modified Maggie MMG's, Transporter, HSU sub 12, MSB DAC to modified 300watt class d amp, JPS labs power cords, Silver audio interconnect, Audioquest Granite speaker cable.