But isn't that only true if all the capsules are picking up the full signal?
In the case of an Ambisonic mike, where the directional capsules are pointed in
various directions, you won't get the full advantage.
Cordially,
Rudy ChalupaPleiades Audio + Electronics
On Wednesday, November 8, 2023 at 08:37:52 PM EST,
lenmoskow...@optonline.net <lenmoskow...@optonline.net> wrote:
Do Many Small Capsules Mean More Self-Noise Or Less? Less!
As we've discussed before, the more capsules an array microphone has,
the lower its self-noise. That's because as you double the number of
capsules, the combined output voltage goes up 6 dB, but the self-noise
only goes up 3 dB.
The noise increases only 3 dB because it's uncorrelated across
capsules. So each time you double the number of capsules, self-noise
drops 3 dB. OctoMic's combined eight capsules have 9 dB lower self-noise
than a single capsule.
That results in a low self-noise specification. We specify it
conservatively as 15 dBA. That's the same as DPA's wonderful 4003, or
only 1 dB more than Schoeps' Mk 4.
Len Moskowitz (mosko...@core-sound.com)
Core Sound LLC
www.core-sound.com
Home of OctoMic and TetraMic
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