But mswlogo you have an almost completely digital playback chain I only have an G68J I have not got to ordering me some dsp speakers -yet-.
Can we not assume some processing to ? are we sure that a Meridian System would always use all 24bit of it's dac's, on all frequencies even att full volume (I think not)? You have a digital room correction and speaker calibration and subwofer filters and digital crossovers these works in 64bit floating point internally. The volume controll also use dithered I think. But this has to be 24bit integers somewhere, in your case in the speakers, but as some Eq is involved in the signal processing, I think if one run an frequency sweep 20-20k one would see slightly different resolution atthe dac's. This is not a "problem" at all really, I think it's completely masked by the nonlinearities in dac's and amps. while a do think that the meridian way of completely digital audio to after the speaker x-over would generate more resolution than ever possible with analog components in the chain. The Meridian system IS transparent to the signal (except for the wanted dsp effect) all the way until it's time to do DA conversion. Example DVDA analog cable to Preamp 100 -120 dB DVDA mhr link -144dB , the conventional system is dead in the water already. This leads to my foggy thought here, If you have a digital playback chain and lowers the resolution on the input data and use -120dB signals . can you ever be sure of what you are listening too ? I personally would never use anything but 100% volume on my Touch with any digital processor connected to it. 1. The process may need the headroom. I also use some dsp effects in my processor, so this is a given. 2. Most digital pre-amps and processors of any pedigree uses dithered volume controls and often have finer resolution than the one provided in an Squeezebox (which is not bad at all, but it can be done slightly better). But on the other hand, in a simpler system say dac analog preamp analog poweramp, passive speakers. The Noise floor and distortion will follow the simple rules discussed in this tread. But this system -has- more noise and distorsions than a digital playback chain to begin with so it will mask the artifacts even better. So you can listen to this signal in: A. A high resolution almost completely digital system that may skew the results due it's processing. B. A good ol almost completely analog rig with tubes and all ;) which would mask the signal completely in it's own grunge. And as others have pointed out is what do this test tell me ? I cant say I'm at the end of my own competence here. An analogy, If use my 1080 HD projektor and walk all the way to the screen and look at the pixels, what does this tells me ? It's out of contexts of how you use it normally but i can see things here. I'm I looking at the "pixels" of my audio system when doing this test ? Can I even begin to generalize, based of what I hear in my system ? :confused: my conclusion is that it is not easy to do a scientific experiment . And not to mention the human factors involved in listening. I'll go and download these test files myself and indulge in audiophile obsession at my leisure this beautiful spring Sunday. Thanks for the effort of making these test files available. -- Mnyb -------------------------------------------------------------------- Main hifi: Touch + CIA PS +MeridianG68J and assorted amps SiriuS, Classe'Primare and Dynadio speakers (including a pair of Contour 4 ) Bedroom/Office: Boom Kitchen: SB3 + powered Fostex PM0.4 Miscellaneous use: Radio (with battery) I use a Controller various ir-remotes and a Eee-PC with squeezeplay to control this ------------------------------------------------------------------------ Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=77725 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
