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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20231108/3a4c2ad2/attachment.htm> _______________________________________________ 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.
