On 2017-06-24, Enda Bates wrote:
In terms of directional accuracy, our study did find the Ambeo to be slightly more accurate, but with the difference in capsule spacing that was expected.
I glanced at the post, but don't seem to remember. Sorry about that. But I just wanted to make sure: was the test double blind? You talk a *lot* about what was to be expected, so that eliminating observer bias might be doubly important.
Both the Ambeo and TetraMic were recorded with a MOTU 8m, with the stock Ambeo cables, and the PPAc cabling for the Tetra over a very short cable run, and yeah, the specific calibration was for sure used for the Tetra.
In general, on a priori reasons, mics wouldn't be expected to be much affected by cable considerations. Pretty much all professional mics of today tend to be extremely low current devices, which means they aren't too sensitive to resistance, and because of that, their proper cabling is also rather thin, leading to low capacitance due to low effective cross section between the cables, and low inductance because of close lead spacing. Of course all that modulo shielding, but still.
Thus I think if the cabling needs to be mentioned, especially with high end, broad diaphragm capsules, someone, somewhere did something Nasty. It should be a given that with mics costing thousands of euros a piece the cabling at least can be assumed to be beyond audible reproach.
In that scenario, the TetraMic recording was definitely noisier, purely due to the additional gain required.
Is that because of smaller capsules, lower line levels, noise gain, or what, you think?
I've heard from quite a few people that given a high end preamp with sufficient clean gain, that's not so much of an issue.
How does that happen, precisely? I mean, analogue circuit wise speaking? If the noise signal is there, no amount of even cleaner gain is going to take it away. Input impedance issues might *generate* noise, true, but then again what *is* the precise issue, here?
Inquiring minds want to know. :) -- Sampo Syreeni, aka decoy - de...@iki.fi, http://decoy.iki.fi/front +358-40-3255353, 025E D175 ABE5 027C 9494 EEB0 E090 8BA9 0509 85C2 _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
