Re: [Sursound] More Capsules - More Self-Noise Or Less?
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 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 -- 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. -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20231109/6006fcf0/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.
[Sursound] More Capsules - More Self-Noise Or Less?
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.
Re: [Sursound] OctoMic Self Noise (was: A comparison of fifteen ambisonic microphones)
Thanks Len. Useful piece of information. And what units is the -81? J Sent from my iPhone > On 8 Nov 2023, at 19:10, lenmoskow...@optonline.net wrote: > > The recording is of the B-format W channel. > > > Len Moskowitz (mosko...@core-sound.com) > Core Sound LLC > www.core-sound.com > Home of OctoMic and TetraMic > ___ > 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. ___ 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.
Re: [Sursound] OctoMic Self Noise (was: A comparison of fifteen ambisonic microphones)
The recording is of the B-format W channel. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic ___ 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.
